Bike Evaluation - Revision history

Quill: fix images

2012-07-29T16:59:59Z

fix images

← Older revision		Revision as of 16:59, 29 July 2012
Line 1:		Line 1:
	[[Image:frame-highmileage.jpg\|~~frame\|none~~\|Bikes with high mileage (lots of road dirt, very worn seat, grips or tape) may have cracked frames or frozen parts which may not be evident until the bike is cleaned. The underside of the bottom is a good place to look for high mileage dirt - most people don't put much time into cleaning the part they can't see.]]		[[Image:frame-highmileage.jpg\|thumb\|Bikes with high mileage (lots of road dirt, very worn seat, grips or tape) may have cracked frames or frozen parts which may not be evident until the bike is cleaned. The underside of the bottom is a good place to look for high mileage dirt - most people don't put much time into cleaning the part they can't see.]]

	'''Evaluating a bike''' for sale, stripping, or scrap. Bikes to be tuned for sale should be evaluated first for fatal frame damage or major repair needs that would mean they should be stripped for scrap or rebuilding.		'''Evaluating a bike''' for sale, stripping, or scrap. Bikes to be tuned for sale should be evaluated first for fatal frame damage or major repair needs that would mean they should be stripped for scrap or rebuilding.
Line 8:		Line 8:
	==Step 2: Frame/fork damage==		==Step 2: Frame/fork damage==
	Check for crash damage to frame and fork: Front crash signs: a bent fork (with one eye closed, sight down the front wheel from above the stem, the handlebars should align with the front dropouts and the stem should be centered in the hub). More likely (and easier to spot), the top and/or down tubes may have cracked paint on the top side, or be rippled on the underside just behind headtube.		Check for crash damage to frame and fork: Front crash signs: a bent fork (with one eye closed, sight down the front wheel from above the stem, the handlebars should align with the front dropouts and the stem should be centered in the hub). More likely (and easier to spot), the top and/or down tubes may have cracked paint on the top side, or be rippled on the underside just behind headtube.
			<gallery>

	[[Image:frame-mildcrash.jpg~~\|frame\|none~~\|Here is a picture of a mildly crashed bike. This bike can still be ridden safely, but we wouldn't want to sell it.]]		Image:frame-mildcrash.jpg\|Here is a picture of a mildly crashed bike. This bike can still be ridden safely, but we wouldn't want to sell it.
			Image:frame-crash.jpg\|Here is a more serious crash, which would make the bike scrap. Anything as bad as this or worse is fatal.
	[[Image:frame-crash.jpg~~\|frame\|none~~\|Here is a more serious crash, which would make the bike scrap. Anything as bad as this or worse is fatal.]]		Image:frame-bentstay.jpg\|Bikes that have been hit from the side (usually by a car while parked in the garage) may have bent handlebars, cranks, wheels, or most fatally, rear stays (sight down each stay to look for differences).
			Image:frame-cracks.jpg\|Aluminum frames are particularly prone to cracks - here is an example.
			</gallery>

	Other crash indications: if the seat and/or bar tape or grip on the right side are badly torn, and/or the right pedal or especially the rear derailer is scraped on the outside, this is a sign to look for a bent rear derailer hanger (on better bikes this is part of the frame), which can sometimes be seen by sighting along the derailer pulleys to check that they are parallel with the sprockets.		Other crash indications: if the seat and/or bar tape or grip on the right side are badly torn, and/or the right pedal or especially the rear derailer is scraped on the outside, this is a sign to look for a bent rear derailer hanger (on better bikes this is part of the frame), which can sometimes be seen by sighting along the derailer pulleys to check that they are parallel with the sprockets.

	[[Image:frame-bentstay.jpg\|frame\|none\|Bikes that have been hit from the side (usually by a car while parked in the garage) may have bent handlebars, cranks, wheels, or most fatally, rear stays (sight down each stay to look for differences).]]

	~~[[Image:frame-cracks.jpg\|frame\|none\|Aluminum frames are particularly prone to cracks - here is an example.]]~~

	==Step 3: Other possibly fatal flaws==		==Step 3: Other possibly fatal flaws==

Quill: organize

2012-07-29T16:56:51Z

organize

← Older revision		Revision as of 16:56, 29 July 2012
Line 1:		Line 1:
			[[Image:frame-highmileage.jpg\|frame\|none\|Bikes with high mileage (lots of road dirt, very worn seat, grips or tape) may have cracked frames or frozen parts which may not be evident until the bike is cleaned. The underside of the bottom is a good place to look for high mileage dirt - most people don't put much time into cleaning the part they can't see.]]

	'''Evaluating a bike''' for sale, stripping, or scrap. Bikes to be tuned for sale should be evaluated first for fatal frame damage or major repair needs that would mean they should be stripped for scrap or rebuilding.		'''Evaluating a bike''' for sale, stripping, or scrap. Bikes to be tuned for sale should be evaluated first for fatal frame damage or major repair needs that would mean they should be stripped for scrap or rebuilding.

	~~'''~~Start by [[pumping the tires up]]~~'''~~; it will make the bike easier to handle, and be helpful whatever the evaluation finds: the tubes won’t get damaged, and we can find out if they hold air.		==Step 1: Inflate the Tires==
			Start by [[pumping the tires up]]; it will make the bike easier to handle, and be helpful whatever the evaluation finds: the tubes won’t get damaged, and we can find out if they hold air.

	~~'''~~Check for crash damage to frame and fork~~'''~~: Front crash signs: a bent fork (with one eye closed, sight down the front wheel from above the stem, the handlebars should align with the front dropouts and the stem should be centered in the hub). More likely (and easier to spot), the top and/or down tubes may have cracked paint on the top side, or be rippled on the underside just behind headtube.		==Step 2: Frame/fork damage==
			Check for crash damage to frame and fork: Front crash signs: a bent fork (with one eye closed, sight down the front wheel from above the stem, the handlebars should align with the front dropouts and the stem should be centered in the hub). More likely (and easier to spot), the top and/or down tubes may have cracked paint on the top side, or be rippled on the underside just behind headtube.

	[[Image:frame-mildcrash.jpg\|frame\|none\|Here is a picture of a mildly crashed bike. This bike can still be ridden safely, but we wouldn't want to sell it.]]		[[Image:frame-mildcrash.jpg\|frame\|none\|Here is a picture of a mildly crashed bike. This bike can still be ridden safely, but we wouldn't want to sell it.]]
Line 13:		Line 17:
	[[Image:frame-bentstay.jpg\|frame\|none\|Bikes that have been hit from the side (usually by a car while parked in the garage) may have bent handlebars, cranks, wheels, or most fatally, rear stays (sight down each stay to look for differences).]]		[[Image:frame-bentstay.jpg\|frame\|none\|Bikes that have been hit from the side (usually by a car while parked in the garage) may have bent handlebars, cranks, wheels, or most fatally, rear stays (sight down each stay to look for differences).]]

	[[Image:frame-~~highmileage~~.jpg\|frame\|none\|~~Bikes with high mileage (lots of road dirt, very worn seat, grips or tape) may have cracked~~ frames or ~~frozen~~ parts ~~which may not be evident until the bike is cleaned. The underside~~ of ~~the bottom is a good place to look for high mileage dirt~~ - ~~most people don't put much time into cleaning the part they can't see~~.]]		[[Image:frame-cracks.jpg\|frame\|none\|Aluminum frames are particularly prone to cracks - here is an example.]]

			==Step 3: Other possibly fatal flaws==

			Check for:
			*missing or damaged parts,
			*badly out-of-true wheels,
			*extensive rust.

	~~[[Image:frame-cracks~~.~~jpg\|frame\|none\|Aluminum frames are particularly prone~~ to ~~cracks~~ - ~~here is an example~~.]]		Generally, the cheaper the bike, the higher our standards are. It is useful to have a “not sure” pile for re-evaluation later.

	~~'''Other possibly fatal flaws''', depending on the bike’s quality, include~~: ~~missing or damaged parts, badly out-of-true wheels, extensive rust. Generally, the cheaper the bike, the higher our standards are. It is useful to have a “not sure” pile for re-evaluation later.~~		==Step 4: Stem/Seatpost==

	~~'''~~Frozen stem or seatpost~~'''~~ are checked next.		Frozen stem or seatpost are checked next.

	If first evaluation is OK: Loosen the seatpost binder and remove the seatpost from the seat tube (gain leverage by standing over the rear wheel, placing one foot on a pedal in the down position, and twisting the seat while pulling up). If it comes out, grease the binder bolt and inside of the seat tube and reinstall and tighten the post with the max. ht. line just visible.		1. If first evaluation is OK: Loosen the seatpost binder and remove the seatpost from the seat tube (gain leverage by standing over the rear wheel, placing one foot on a pedal in the down position, and twisting the seat while pulling up). If it comes out, grease the binder bolt and inside of the seat tube and reinstall and tighten the post with the max. ht. line just visible.
	~~2 PICS~~

	For threaded headsets, loosen the stem bolt (stand with front wheel between your knees, loosen the stem bolt 5 turns or so and tap it down with a hammer, if needed) and pull the quill out of the fork steerer tube. Grease the stem bolt threads and inside of the steerer tube, and reinstall and tighten the stem with the max. ht. line just visible.		2. For threaded headsets, loosen the stem bolt (stand with front wheel between your knees, loosen the stem bolt 5 turns or so and tap it down with a hammer, if needed) and pull the quill out of the fork steerer tube. Grease the stem bolt threads and inside of the steerer tube, and reinstall and tighten the stem with the max. ht. line just visible.
	~~2 PICS~~

			==Step 5: Pedals==
	If the pedals are damaged (broken, bent, or very wobbly or rusted), remove them: They are on tight, so use the right wrench, and be careful of smashing your fingers between the wrench and the bike. Hold the wrench all the way at the end, and try pushing down on it while you lean over the bike from the other side, so it doesn't roll away from you. The left pedal (on the left side when you sit on the bike) is left-hand threads, so turn it '''clockwise''' to loosen. The right pedal is right-hand thread so turn it counter-clockwise to loosen. Liquid Wrench may help.		If the pedals are damaged (broken, bent, or very wobbly or rusted), remove them: They are on tight, so use the right wrench, and be careful of smashing your fingers between the wrench and the bike. Hold the wrench all the way at the end, and try pushing down on it while you lean over the bike from the other side, so it doesn't roll away from you. The left pedal (on the left side when you sit on the bike) is left-hand threads, so turn it '''clockwise''' to loosen. The right pedal is right-hand thread so turn it counter-clockwise to loosen. Liquid Wrench may help.
	~~PIC~~

	If the seatpost, stem and pedals are OK, write your name and the bike’s serial number and any minor needs you have noticed on a ~~'''~~worksheet strapped to the handlebars~~'''~~. If there are fatal flaws write those on the sheet, or just put the bike in the appropriate pile.		==Step 6: Completion==
			If the seatpost, stem and pedals are OK, write your name and the bike’s serial number and any minor needs you have noticed on a worksheet strapped to the handlebars. If there are fatal flaws write those on the sheet, or just put the bike in the appropriate pile.

			Proceed to [[Tuning up a bicycle\|Tune-up]]

	== Go Back ==		== Go Back ==

Quill: Category:Bicycle_parts evaluation

2012-04-08T08:15:23Z

Category:Bicycle_parts evaluation

← Older revision		Revision as of 08:15, 8 April 2012
Line 35:		Line 35:

	* [[Shop Manual]]		* [[Shop Manual]]

			[[Category:Bicycle_parts evaluation]]

Quill: adjust images

2012-04-08T08:13:54Z

adjust images

← Older revision		Revision as of 08:13, 8 April 2012
Line 5:		Line 5:
	'''Check for crash damage to frame and fork''': Front crash signs: a bent fork (with one eye closed, sight down the front wheel from above the stem, the handlebars should align with the front dropouts and the stem should be centered in the hub). More likely (and easier to spot), the top and/or down tubes may have cracked paint on the top side, or be rippled on the underside just behind headtube.		'''Check for crash damage to frame and fork''': Front crash signs: a bent fork (with one eye closed, sight down the front wheel from above the stem, the handlebars should align with the front dropouts and the stem should be centered in the hub). More likely (and easier to spot), the top and/or down tubes may have cracked paint on the top side, or be rippled on the underside just behind headtube.

	Here is a picture of a mildly crashed bike. This bike can still be ridden safely, but we wouldn't want to sell it.		[[Image:frame-mildcrash.jpg\|frame\|none\|Here is a picture of a mildly crashed bike. This bike can still be ridden safely, but we wouldn't want to sell it.]]
	~~[[Image:frame-mildcrash.jpg]]~~

	~~Here is a more serious crash, which would make the bike scrap. Anything as bad as this or worse is fatal.~~
	~~[[Image:frame-crash.jpg~~]]

			[[Image:frame-crash.jpg\|frame\|none\|Here is a more serious crash, which would make the bike scrap. Anything as bad as this or worse is fatal.]]

	Other crash indications: if the seat and/or bar tape or grip on the right side are badly torn, and/or the right pedal or especially the rear derailer is scraped on the outside, this is a sign to look for a bent rear derailer hanger (on better bikes this is part of the frame), which can sometimes be seen by sighting along the derailer pulleys to check that they are parallel with the sprockets.		Other crash indications: if the seat and/or bar tape or grip on the right side are badly torn, and/or the right pedal or especially the rear derailer is scraped on the outside, this is a sign to look for a bent rear derailer hanger (on better bikes this is part of the frame), which can sometimes be seen by sighting along the derailer pulleys to check that they are parallel with the sprockets.

	Bikes that have been hit from the side (usually by a car while parked in the garage) may have bent handlebars, cranks, wheels, or most fatally, rear stays (sight down each stay to look for differences).		[[Image:frame-bentstay.jpg\|frame\|none\|Bikes that have been hit from the side (usually by a car while parked in the garage) may have bent handlebars, cranks, wheels, or most fatally, rear stays (sight down each stay to look for differences).]]
	~~[[Image:frame-bentstay.jpg~~]]

	Bikes with high mileage (lots of road dirt, very worn seat, grips or tape) may have cracked frames or frozen parts which may not be evident until the bike is cleaned. The underside of the bottom is a good place to look for high mileage dirt - most people don't put much time into cleaning the part they can't see.		[[Image:frame-highmileage.jpg\|frame\|none\|Bikes with high mileage (lots of road dirt, very worn seat, grips or tape) may have cracked frames or frozen parts which may not be evident until the bike is cleaned. The underside of the bottom is a good place to look for high mileage dirt - most people don't put much time into cleaning the part they can't see.]]
	~~[[Image:frame-highmileage.jpg~~]]

	Aluminum frames are particularly prone to cracks - here is an example.		[[Image:frame-cracks.jpg\|frame\|none\|Aluminum frames are particularly prone to cracks - here is an example.]]
	~~[[Image:frame-cracks.jpg~~]]

	'''Other possibly fatal flaws''', depending on the bike’s quality, include: missing or damaged parts, badly out-of-true wheels, extensive rust. Generally, the cheaper the bike, the higher our standards are. It is useful to have a “not sure” pile for re-evaluation later.		'''Other possibly fatal flaws''', depending on the bike’s quality, include: missing or damaged parts, badly out-of-true wheels, extensive rust. Generally, the cheaper the bike, the higher our standards are. It is useful to have a “not sure” pile for re-evaluation later.

Chrisk: Undo revision 8563 by Imywejyh (Talk)

2010-11-24T05:07:02Z

Undo revision 8563 by Imywejyh (Talk)

← Older revision		Revision as of 05:07, 24 November 2010
Line 1:		Line 1:
	~~=[http://enececufo.co.cc This Page Is Currently Under Construction And Will Be Available Shortly, Please Visit Reserve Copy Page]=~~
	'''Evaluating a bike''' for sale, stripping, or scrap. Bikes to be tuned for sale should be evaluated first for fatal frame damage or major repair needs that would mean they should be stripped for scrap or rebuilding.		'''Evaluating a bike''' for sale, stripping, or scrap. Bikes to be tuned for sale should be evaluated first for fatal frame damage or major repair needs that would mean they should be stripped for scrap or rebuilding.

Imywejyh at 04:47, 24 November 2010

2010-11-24T04:47:10Z

← Older revision		Revision as of 04:47, 24 November 2010
Line 1:		Line 1:
			=[http://enececufo.co.cc This Page Is Currently Under Construction And Will Be Available Shortly, Please Visit Reserve Copy Page]=
	'''Evaluating a bike''' for sale, stripping, or scrap. Bikes to be tuned for sale should be evaluated first for fatal frame damage or major repair needs that would mean they should be stripped for scrap or rebuilding.		'''Evaluating a bike''' for sale, stripping, or scrap. Bikes to be tuned for sale should be evaluated first for fatal frame damage or major repair needs that would mean they should be stripped for scrap or rebuilding.

Jonathan at 17:23, 27 December 2006

2006-12-27T17:23:23Z

← Older revision		Revision as of 17:23, 27 December 2006
Line 37:		Line 37:

	If the seatpost, stem and pedals are OK, write your name and the bike’s serial number and any minor needs you have noticed on a '''worksheet strapped to the handlebars'''. If there are fatal flaws write those on the sheet, or just put the bike in the appropriate pile.		If the seatpost, stem and pedals are OK, write your name and the bike’s serial number and any minor needs you have noticed on a '''worksheet strapped to the handlebars'''. If there are fatal flaws write those on the sheet, or just put the bike in the appropriate pile.

			== Go Back ==

			* [[Shop Manual]]

Jonathan at 21:49, 31 October 2006

2006-10-31T21:49:07Z

← Older revision		Revision as of 21:49, 31 October 2006
Line 6:		Line 6:

	Here is a picture of a mildly crashed bike. This bike can still be ridden safely, but we wouldn't want to sell it.		Here is a picture of a mildly crashed bike. This bike can still be ridden safely, but we wouldn't want to sell it.
	~~{img src="/manual/images/~~frame-mildcrash.jpg"}		[[Image:frame-mildcrash.jpg]]

	Here is a more serious crash, which would make the bike scrap. Anything as bad as this or worse is fatal.		Here is a more serious crash, which would make the bike scrap. Anything as bad as this or worse is fatal.
	~~{img src="/manual/images/~~frame-crash.jpg"}		[[Image:frame-crash.jpg]]


Line 15:		Line 15:

	Bikes that have been hit from the side (usually by a car while parked in the garage) may have bent handlebars, cranks, wheels, or most fatally, rear stays (sight down each stay to look for differences).		Bikes that have been hit from the side (usually by a car while parked in the garage) may have bent handlebars, cranks, wheels, or most fatally, rear stays (sight down each stay to look for differences).
	~~{img src="/manual/images/~~frame-bentstay.jpg"}		[[Image:frame-bentstay.jpg]]

	Bikes with high mileage (lots of road dirt, very worn seat, grips or tape) may have cracked frames or frozen parts which may not be evident until the bike is cleaned. The underside of the bottom is a good place to look for high mileage dirt - most people don't put much time into cleaning the part they can't see.		Bikes with high mileage (lots of road dirt, very worn seat, grips or tape) may have cracked frames or frozen parts which may not be evident until the bike is cleaned. The underside of the bottom is a good place to look for high mileage dirt - most people don't put much time into cleaning the part they can't see.
	~~{img src="/manual/images/~~frame-highmileage.jpg"}		[[Image:frame-highmileage.jpg]]

	Aluminum frames are particularly prone to cracks - here is an example.		Aluminum frames are particularly prone to cracks - here is an example.
	~~{img src="/manual/images/~~frame-cracks.jpg"}		[[Image:frame-cracks.jpg]]

	'''Other possibly fatal flaws''', depending on the bike’s quality, include: missing or damaged parts, badly out-of-true wheels, extensive rust. Generally, the cheaper the bike, the higher our standards are. It is useful to have a “not sure” pile for re-evaluation later.		'''Other possibly fatal flaws''', depending on the bike’s quality, include: missing or damaged parts, badly out-of-true wheels, extensive rust. Generally, the cheaper the bike, the higher our standards are. It is useful to have a “not sure” pile for re-evaluation later.

67.166.123.154 at 18:12, 19 October 2006

2006-10-19T18:12:18Z

67.166.123.154 at 18:10, 19 October 2006

2006-10-19T18:10:35Z

New page

'''Evaluating a bike''' for sale, stripping, or scrap. Bikes to be tuned for sale should be evaluated first for fatal frame damage or major repair needs that would mean they should be stripped for scrap or rebuilding.

__Start by [[pumping the tires up]]__; it will make the bike easier to handle, and be helpful whatever the evaluation finds: the tubes won’t get damaged, and we can find out if they hold air.

__Check for crash damage to frame and fork__: Front crash signs: a bent fork (with one eye closed, sight down the front wheel from above the stem, the handlebars should align with the front dropouts and the stem should be centered in the hub). More likely (and easier to spot), the top and/or down tubes may have cracked paint on the top side, or be rippled on the underside just behind headtube.

Here is a picture of a mildly crashed bike. This bike can still be ridden safely, but we wouldn't want to sell it.
{img src="/manual/images/frame-mildcrash.jpg"}

Here is a more serious crash, which would make the bike scrap. Anything as bad as this or worse is fatal.
{img src="/manual/images/frame-crash.jpg"}

Other crash indications: if the seat and/or bar tape or grip on the right side are badly torn, and/or the right pedal or especially the rear derailer is scraped on the outside, this is a sign to look for a bent rear derailer hanger (on better bikes this is part of the frame), which can sometimes be seen by sighting along the derailer pulleys to check that they are parallel with the sprockets.

Bikes that have been hit from the side (usually by a car while parked in the garage) may have bent handlebars, cranks, wheels, or most fatally, rear stays (sight down each stay to look for differences).
{img src="/manual/images/frame-bentstay.jpg"}

Bikes with high mileage (lots of road dirt, very worn seat, grips or tape) may have cracked frames or frozen parts which may not be evident until the bike is cleaned. The underside of the bottom is a good place to look for high mileage dirt - most people don't put much time into cleaning the part they can't see.
{img src="/manual/images/frame-highmileage.jpg"}

Aluminum frames are particularly prone to cracks - here is an example.
{img src="/manual/images/frame-cracks.jpg"}

__Other possibly fatal flaws__, depending on the bike’s quality, include: missing or damaged parts, badly out-of-true wheels, extensive rust. Generally, the cheaper the bike, the higher our standards are. It is useful to have a “not sure” pile for re-evaluation later.

__Frozen stem or seatpost__ are checked next.

If first evaluation is OK: Loosen the seatpost binder and remove the seatpost from the seat tube (gain leverage by standing over the rear wheel, placing one foot on a pedal in the down position, and twisting the seat while pulling up). If it comes out, grease the binder bolt and inside of the seat tube and reinstall and tighten the post with the max. ht. line just visible.
2 PICS

For threaded headsets, loosen the stem bolt (stand with front wheel between your knees, loosen the stem bolt 5 turns or so and tap it down with a hammer, if needed) and pull the quill out of the fork steerer tube. Grease the stem bolt threads and inside of the steerer tube, and reinstall and tighten the stem with the max. ht. line just visible.
2 PICS

If the pedals are damaged (broken, bent, or very wobbly or rusted), remove them: They are on tight, so use the right wrench, and be careful of smashing your fingers between the wrench and the bike. Hold the wrench all the way at the end, and try pushing down on it while you lean over the bike from the other side, so it doesn't roll away from you. The left pedal (on the left side when you sit on the bike) is left-hand threads, so turn it __clockwise__ to loosen. The right pedal is right-hand thread so turn it counter-clockwise to loosen. Liquid Wrench may help.
PIC

If the seatpost, stem and pedals are OK, write your name and the bike’s serial number and any minor needs you have noticed on a __worksheet strapped to the handlebars__. If there are fatal flaws write those on the sheet, or just put the bike in the appropriate pile.

← Older revision		Revision as of 18:12, 19 October 2006
Line 1:		Line 1:
	'''Evaluating a bike''' for sale, stripping, or scrap. Bikes to be tuned for sale should be evaluated first for fatal frame damage or major repair needs that would mean they should be stripped for scrap or rebuilding.		'''Evaluating a bike''' for sale, stripping, or scrap. Bikes to be tuned for sale should be evaluated first for fatal frame damage or major repair needs that would mean they should be stripped for scrap or rebuilding.

	~~__Start~~ by [[pumping the tires up]]__; it will make the bike easier to handle, and be helpful whatever the evaluation finds: the tubes won’t get damaged, and we can find out if they hold air.		'''Start by [[pumping the tires up]]'''; it will make the bike easier to handle, and be helpful whatever the evaluation finds: the tubes won’t get damaged, and we can find out if they hold air.

	~~__Check~~ for crash damage to frame and ~~fork__~~: Front crash signs: a bent fork (with one eye closed, sight down the front wheel from above the stem, the handlebars should align with the front dropouts and the stem should be centered in the hub). More likely (and easier to spot), the top and/or down tubes may have cracked paint on the top side, or be rippled on the underside just behind headtube.		'''Check for crash damage to frame and fork''': Front crash signs: a bent fork (with one eye closed, sight down the front wheel from above the stem, the handlebars should align with the front dropouts and the stem should be centered in the hub). More likely (and easier to spot), the top and/or down tubes may have cracked paint on the top side, or be rippled on the underside just behind headtube.

	Here is a picture of a mildly crashed bike. This bike can still be ridden safely, but we wouldn't want to sell it.		Here is a picture of a mildly crashed bike. This bike can still be ridden safely, but we wouldn't want to sell it.
Line 23:		Line 23:
	{img src="/manual/images/frame-cracks.jpg"}		{img src="/manual/images/frame-cracks.jpg"}

	~~__Other~~ possibly fatal ~~flaws__~~, depending on the bike’s quality, include: missing or damaged parts, badly out-of-true wheels, extensive rust. Generally, the cheaper the bike, the higher our standards are. It is useful to have a “not sure” pile for re-evaluation later.		'''Other possibly fatal flaws''', depending on the bike’s quality, include: missing or damaged parts, badly out-of-true wheels, extensive rust. Generally, the cheaper the bike, the higher our standards are. It is useful to have a “not sure” pile for re-evaluation later.

	~~__Frozen~~ stem or ~~seatpost__~~ are checked next.		'''Frozen stem or seatpost''' are checked next.

	If first evaluation is OK: Loosen the seatpost binder and remove the seatpost from the seat tube (gain leverage by standing over the rear wheel, placing one foot on a pedal in the down position, and twisting the seat while pulling up). If it comes out, grease the binder bolt and inside of the seat tube and reinstall and tighten the post with the max. ht. line just visible.		If first evaluation is OK: Loosen the seatpost binder and remove the seatpost from the seat tube (gain leverage by standing over the rear wheel, placing one foot on a pedal in the down position, and twisting the seat while pulling up). If it comes out, grease the binder bolt and inside of the seat tube and reinstall and tighten the post with the max. ht. line just visible.
Line 33:		Line 33:
	2 PICS		2 PICS

	If the pedals are damaged (broken, bent, or very wobbly or rusted), remove them: They are on tight, so use the right wrench, and be careful of smashing your fingers between the wrench and the bike. Hold the wrench all the way at the end, and try pushing down on it while you lean over the bike from the other side, so it doesn't roll away from you. The left pedal (on the left side when you sit on the bike) is left-hand threads, so turn it ~~__clockwise__~~ to loosen. The right pedal is right-hand thread so turn it counter-clockwise to loosen. Liquid Wrench may help.		If the pedals are damaged (broken, bent, or very wobbly or rusted), remove them: They are on tight, so use the right wrench, and be careful of smashing your fingers between the wrench and the bike. Hold the wrench all the way at the end, and try pushing down on it while you lean over the bike from the other side, so it doesn't roll away from you. The left pedal (on the left side when you sit on the bike) is left-hand threads, so turn it '''clockwise''' to loosen. The right pedal is right-hand thread so turn it counter-clockwise to loosen. Liquid Wrench may help.
	PIC		PIC

	If the seatpost, stem and pedals are OK, write your name and the bike’s serial number and any minor needs you have noticed on a ~~__worksheet~~ strapped to the ~~handlebars__~~. If there are fatal flaws write those on the sheet, or just put the bike in the appropriate pile.		If the seatpost, stem and pedals are OK, write your name and the bike’s serial number and any minor needs you have noticed on a '''worksheet strapped to the handlebars'''. If there are fatal flaws write those on the sheet, or just put the bike in the appropriate pile.