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#1
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Flipping a chain ring on a granny gear to foil developing chain suck
I started to experience chainsuck on the granny gear of my triple ultegra nine speed crank. So, I flipped the granny gear over and installed washers between crank and ring to get the spacing right. I have not ridden the bike yet with this repair so I would appreciate any thoughts pro or con. I would hate to make things worse. Thanks! |
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#2
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Flipping a chain ring on a granny gear to foil developing chainsuck
On Dec 22, 9:50*pm, Fritz wrote:
I started to experience chainsuck on *the granny gear of my triple ultegra nine speed crank. * So, I flipped the granny gear over and installed washers between crank and ring to get the spacing right. * I have not ridden the bike yet with this repair so I would appreciate any thoughts pro or con. *I would hate to make things worse. * If the cause is a fairly fresh chain on a worn ring--you should be good to go. Ride and see how you fare. ;-) |
#3
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Flipping a chain ring on a granny gear to foil developing chainsuck
On 23 Dec, 03:50, Fritz wrote:
I started to experience chainsuck on *the granny gear of my triple ultegra nine speed crank. * So, I flipped the granny gear over and installed washers between crank and ring to get the spacing right. * I have not ridden the bike yet with this repair so I would appreciate any thoughts pro or con. *I would hate to make things worse. * Should be good. One thing is always to keep your chainring fixings together, do not mix them up. If you end up mixing nut and bolt then there is the possibility of a slight mismatch (at least there used to be) and the risk of seperation on the road increases. Use threadlock or wire them (until you are certain they remain secure) so you dont lose the fixings. |
#4
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Flipping a chain ring on a granny gear to foil developing chain suck
On Tue, 22 Dec 2009 20:47:43 -0800 (PST), thirty-six wrote:
One thing is always to keep your chainring fixings together, do not mix them up. If you end up mixing nut and bolt then there is the possibility of a slight mismatch This is nonsense. Screw threads were one of the first targets of part interchangability, and claiming the above is alarmism of beamian nature. |
#5
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Flipping a chain ring on a granny gear to foil developing chainsuck
On Dec 23, 6:01*am, _
wrote: On Tue, 22 Dec 2009 20:47:43 -0800 (PST), thirty-six wrote: One thing is always to keep your chainring fixings together, do not mix them up. *If you end up mixing nut and bolt then there is the possibility of a slight mismatch This is nonsense. Screw threads were one of the first targets of part interchangability, and claiming the above is alarmism of beamian nature. On the other hand, I experienced chain suck on a ride last summer and when I stopped I found that one of the chainring bolts was loose and two adjacents were gone completely. Boy, had I gotten lazy about the pre-ride checks. This was on a 98-ish Campy 9-spd Record crank. Not too far from home so I got away with the price of new bolts, a lesson I won't forget and some paint damage on the chainstay (yea, steel!) As regards the OP, a wire loop through the bolts sound like a great idea if I was a tourist and a looong way from anyplace, like in Namibia or Utah. No different than the wires I've seen used on castellated nuts in sundry bearing assemblies. But, if you're all lycra-ed up, doing something like that would certainly break your mojo. sa |
#6
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Flipping a chain ring on a granny gear to foil developing chainsuck
On 23 Dec, 13:01, _
wrote: On Tue, 22 Dec 2009 20:47:43 -0800 (PST), thirty-six wrote: One thing is always to keep your chainring fixings together, do not mix them up. *If you end up mixing nut and bolt then there is the possibility of a slight mismatch This is nonsense. Screw threads were one of the first targets of part interchangability, and claiming the above is alarmism of beamian nature. Despite Whitworth standardisation of screw threads, mismatches do occur with chainring fastenings. I'm not certain of the precise cause because those bolts I've lost, I've lost, and that is despite making sure that they were tightened fully. It could be that the threads were bottoming out and so felt tight when in fact it was simply that the end of the thread had been reached and so movement of the chainring would unscrew the bolt. |
#7
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Flipping a chain ring on a granny gear to foil developing chain suck
On Wed, 23 Dec 2009 11:07:10 -0800 (PST), thirty-six wrote:
On 23 Dec, 13:01, _ wrote: On Tue, 22 Dec 2009 20:47:43 -0800 (PST), thirty-six wrote: One thing is always to keep your chainring fixings together, do not mix them up. *If you end up mixing nut and bolt then there is the possibility of a slight mismatch This is nonsense. Screw threads were one of the first targets of part interchangability, and claiming the above is alarmism of beamian nature. Despite Whitworth standardisation of screw threads, mismatches do occur with chainring fastenings. I'm not certain of the precise cause because those bolts I've lost, I've lost, and that is despite making sure that they were tightened fully. It could be that the threads were bottoming out and so felt tight when in fact it was simply that the end of the thread had been reached and so movement of the chainring would unscrew the bolt. a) if that (bottoming out) were the case then keeping a nut and screw together would not prevent it; b) you seem to have slid from "do this or else" to "I'm sure of the cause"; and b) it's a poor workman that blames his equipment. |
#8
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Flipping a chain ring on a granny gear to foil developing chainsuck
On 23 Dec, 19:56, _
wrote: a) if that (bottoming out) were the case then keeping a nut and screw together would not prevent it; Keeps successfully working pairs together. b) you seem to have slid from "do this or else" to "I'm sure of the cause"; and Misquote. b) it's a poor workman that blames his equipment. learning the alphabet before posting may help. |
#9
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Flipping a chain ring on a granny gear to foil developing chain suck
On Wed, 23 Dec 2009 12:29:01 -0800 (PST), thirty-six wrote:
On 23 Dec, 19:56, _ wrote: a) if that (bottoming out) were the case then keeping a nut and screw together would not prevent it; Keeps successfully working pairs together. a) all pairs work; and b) you are "...not certain of the precise cause because those bolts (you)'ve lost, (you)'ve lost." b) you seem to have slid from "do this or else" to "I'm sure of the cause"; and Misquote. True - from "Do this or else" to (as above) "I'm NOT sure of the cause". Thanks for pointing out that out; it does your argument no favour. b) it's a poor workman that blames his equipment. learning the alphabet before posting may help. On usenet, attacking spelling and similar keybpoard errors of a post is often an indicator that the replying poster has no other support. |
#10
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Flipping a chain ring on a granny gear to foil developing chainsuck
On 24 Dec, 17:37, _
wrote: On Wed, 23 Dec 2009 12:29:01 -0800 (PST), thirty-six wrote: On 23 Dec, 19:56, _ wrote: a) if that (bottoming out) were the case then keeping a nut and screw together would not prevent it; Keeps successfully working pairs together. a) all pairs work; and if you mix them up, sometimes they don't and you lose them on the road. Using a threadlock or wire although not addressing the cause does prevent the loss of the fixings. The loosewmned fixings can be swapped around until they stick. b) you are "...not certain of the precise cause because those bolts (you)'ve lost, (you)'ve lost." b) you seem to have slid from "do this or else" to "I'm sure of the cause"; and Misquote. True - from "Do this or else" to (as above) "I'm NOT sure of the cause". Thanks for pointing out that out; it does your argument no favour. Misquote again. b) it's a poor workman that blames his equipment. learning the alphabet before posting may help. On usenet, attacking spelling and similar keybpoard errors of a post is often an indicator that the replying poster has no other support. |
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