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09-26-07, 04:34 PM
Folks, recently the derailleur mount on the bike has snapped while climbing a moderately steep hill. The derailleur mount if actually screwed to the frame so it can be replaced easily. Apart from the mount, the chain broke and the derailleur cage was slightly bent. All that went going uphill.
In retrospect I'm sure I'd have some leeway if I'd climb the same hill with the Cannondale badboy in the same very low gear. But with the recumbent I was in direct drive so to speak and since it seems I have some leg power I was just pushing the cranks to get up there when everything snapped.
So my question is, I think it can be possible to be in such a position if the chain is too short. I might have cut the chain to short after adjusting the boom. So when climbing that hill the chain would have exerced too much pressure on the mount. Can this be possible ?
Everyone knows I have an AB HiRacer. I must say that AB did not hesitate one minute in sending me new derailleur mounts. Very good service. To their record they've never seen that kind of incident.
So I think so far that it is my fault by cutting the chain too short. Basically on the recumbent I should have the same leeway (of course this depends on the cogs and chainrings) when climbing uphill than on a regular bike. I should be spinning and grinning going uphill and not be in 'direct drive' of the rear wheel where it feels that every turn of the cranks makes the wheel turn once as in a very steep mountain bike type bump.
Cheers.
In retrospect I'm sure I'd have some leeway if I'd climb the same hill with the Cannondale badboy in the same very low gear. But with the recumbent I was in direct drive so to speak and since it seems I have some leg power I was just pushing the cranks to get up there when everything snapped.
So my question is, I think it can be possible to be in such a position if the chain is too short. I might have cut the chain to short after adjusting the boom. So when climbing that hill the chain would have exerced too much pressure on the mount. Can this be possible ?
Everyone knows I have an AB HiRacer. I must say that AB did not hesitate one minute in sending me new derailleur mounts. Very good service. To their record they've never seen that kind of incident.
So I think so far that it is my fault by cutting the chain too short. Basically on the recumbent I should have the same leeway (of course this depends on the cogs and chainrings) when climbing uphill than on a regular bike. I should be spinning and grinning going uphill and not be in 'direct drive' of the rear wheel where it feels that every turn of the cranks makes the wheel turn once as in a very steep mountain bike type bump.
Cheers.