Bike fell over, hello dammed Di2 derailleur
<sigh>
So I learned the hard way this weekend that standing your bike up against the curb (using the pedal for support) is a bad idea. I did this then a big gust of wind blew my bike over. On to the Di2 derailleur. The damage? Bent hanger, which I didn't see. So I decided to go for a ride and WHAMMO! Chain jumped in to the spokes, breaking three of them AND bending the hanger arm all to hell. The ride I was going to do never happened AND I'm out of pocket X dollars to fix this everything. PLUS I'm concerned the Di2 is all jacked up and I'm going to be out of money a whole lot more. I didn't know whether to cry or yell when it happened. Especially since I always baby my bike. Needless to say, I'm not in a happy mood at the moment. That is all. |
kocked over
I had a similar but much milder experience early in my cycling career. I would load my bike into the back of my hatchback vehicle, unknowningly, with the derailler side down. This gradually bent the hanger causing poor shifting that the locoal bike shop quickly put right. The lesson was to load the bike derailler side up but also when leaning the bike against a wall or whatever, such that if it fell or was accidently knocked over it wold land derailler side up.
|
this is a bit late to help the OP, but this is why it's a good idea to check both the RD hangar and the limit screws:
a) any time the RD gets banged b) any time you do anything with the rear wheel, including a rear wheel or freehub change (i am completely paranoid about testing the RD limit screws after any rear wheel adjustment, maybe to an excessive amount, but hopping the chain into the spokes is one of the worst possible failure modes on a bike) |
OP, are you sure the derailleur hanger was bent? Did you reset the rear derailleur ("crash recovery mode") after the drop?
Di2 rear derailleurs are designed to disengage if they receive an impact. If you put them into "crash recovery mode" while turning the cranks, and before you do anything else, they will self-adjust and reset back to normal. Unless, of course, the derailleur hanger was bent before you put it into crash recovery mode. |
Originally Posted by NoWhammies
(Post 21093145)
<sigh>
So I learned the hard way this weekend that standing your bike up against the curb (using the pedal for support) is a bad idea. I did this then a big gust of wind blew my bike over. On to the Di2 derailleur. The damage? Bent hanger, which I didn't see. So I decided to go for a ride and WHAMMO! Chain jumped in to the spokes, breaking three of them AND bending the hanger arm all to hell. The ride I was going to do never happened AND I'm out of pocket X dollars to fix this everything. PLUS I'm concerned the Di2 is all jacked up and I'm going to be out of money a whole lot more. I didn't know whether to cry or yell when it happened. Especially since I always baby my bike. Needless to say, I'm not in a happy mood at the moment. That is all. First thing is replace the hanger. With the newer RDs it makes it hard to visually eyeball straightness of the cage. If after replacing the hanger and you re-index Di2 shifting is messed up, you made need a new RD cage. At worst you need a wheel repair, an RD hanger, and a new RD. Killing an RD entirely is hard to do (sheering off the mounting bolt knuckle), and you probably only need a new cage at most. |
Don't feel bad
My own clumsiness did some damage when I dropped my new bike walking it backwards and I stepped on the rear derailler and spokes. At fist glance I thought I was OK. Untill I went to ride up a steep hill in 1'st gear and the bent derailler got caught in the spokes. Ruined the deraileur and bent the wheel. $100 later at the lbs and it's better then new. They put on a better rear derailleur and a new chain they said had stretched after 1,000 km, and trued the wheel. I use a center kickstand on my bike. Their pretty dependable if you careful using it. |
Ugh, that sucks. I'm no help but I feel bad for you. It sucks when stuff like that happens.
|
Originally Posted by xroadcharlie
(Post 21093339)
My own clumsiness did some damage when I dropped my new bike walking it backwards and I stepped on the rear derailler and spokes. At fist glance I thought I was OK. Untill I went to ride up a steep hill in 1'st gear and the bent derailler got caught in the spokes. Ruined the deraileur and bent the wheel. |
TBF, if the hanger was bent a mechanical RD would have done the same thing, not a Di2 problem per se
|
Originally Posted by FlashBazbo
(Post 21093277)
OP, are you sure the derailleur hanger was bent? Did you reset the rear derailleur ("crash recovery mode") after the drop?
Di2 rear derailleurs are designed to disengage if they receive an impact. If you put them into "crash recovery mode" while turning the cranks, and before you do anything else, they will self-adjust and reset back to normal. Unless, of course, the derailleur hanger was bent before you put it into crash recovery mode. |
Originally Posted by Marcus_Ti
(Post 21093298)
Di2 won't be "all jacked up".
First thing is replace the hanger. With the newer RDs it makes it hard to visually eyeball straightness of the cage. If after replacing the hanger and you re-index Di2 shifting is messed up, you made need a new RD cage. At worst you need a wheel repair, an RD hanger, and a new RD. Killing an RD entirely is hard to do (sheering off the mounting bolt knuckle), and you probably only need a new cage at most. OP...Man really sorry to hear what happened. I would be sick to my stomach as well. How is the rest of the bike? |
Originally Posted by mattleegee
(Post 21093369)
How do you reset?
|
Checking the derailleur is always a good idea when the bike falls over or the rear bumps up against something.
I was struggling up a 14 percent grade near the end of a climb on a narrow road when a large FedEx truck forced me to far to shoulder and I had to unclip and hit both brakes as the bike rotated counterclockwise and the rear hit the bushes of the adjoining slope. Then I was stuck with trying to figure out the best way to remount the bike on the 14 percent grade. I decided to cross the narrow road at a right angle trusting I could quickly clip in. I was successful only to instantly learn my rear derailleur and hanger were damaged and the chain was locked. Bad things happened after that. |
Originally Posted by NoWhammies
(Post 21093145)
<sigh>
So I learned the hard way this weekend that standing your bike up against the curb (using the pedal for support) is a bad idea. I did this then a big gust of wind blew my bike over. On to the Di2 derailleur. The damage? Bent hanger, which I didn't see. So I decided to go for a ride and WHAMMO! Chain jumped in to the spokes, breaking three of them AND bending the hanger arm all to hell. The ride I was going to do never happened AND I'm out of pocket X dollars to fix this everything. PLUS I'm concerned the Di2 is all jacked up and I'm going to be out of money a whole lot more. I didn't know whether to cry or yell when it happened. Especially since I always baby my bike. Needless to say, I'm not in a happy mood at the moment. That is all. I hope you get it sorted out as economically as possible. |
Originally Posted by redlude97
(Post 21093353)
TBF, if the hanger was bent a mechanical RD would have done the same thing, not a Di2 problem per se
|
Originally Posted by jadocs
(Post 21093377)
I don 't think he has the newer group. He posted a pic about a month ago and I recall the cage was straight and not shaped like mine (R8070).
OP...Man really sorry to hear what happened. I would be sick to my stomach as well. How is the rest of the bike? |
clearly the safest solution is to just buy a carbon disc wheel on the back, it pays for itself!
|
Thanks for the sympathy / condolences. I just needed a place to vent!
|
To the OP...go ahead and have a cry. It won’t change things but it may help you feel better. We are in touch with our feelings, so it is OK to cry, well in private anyway.
I had a similar experience (standing the bike against the curb) with my then new Bottecchia. A gust of wind knocked it over and in the fall, the shiny red tube was scratched. Luckily there was no damage, other than a deep scratch. A friend of mine, who is handy with this sort of thing restored the tube to its prior, pristine condition. Lesson learned, I never lean my bikes against the curb. :thumb: Hope you can get things sorted out. |
I make it a habit not to lean my bike up in a way it can fall derailleur side first.
|
Originally Posted by sheddle
(Post 21093180)
this is a bit late to help the OP, but this is why it's a good idea to check both the RD hangar and the limit screws:
a) any time the RD gets banged b) any time you do anything with the rear wheel, including a rear wheel or freehub change (i am completely paranoid about testing the RD limit screws after any rear wheel adjustment, maybe to an excessive amount, but hopping the chain into the spokes is one of the worst possible failure modes on a bike) |
Originally Posted by NoWhammies
(Post 21094110)
Thanks for the sympathy / condolences. I just needed a place to vent!
https://www.ebay.com/itm/KCNC-Road-B...53.m1438.l2649 |
Originally Posted by noodle soup
(Post 21094759)
if the lower portion of the derailleur is bent, one of these would replace it for relatively little $$$.
https://www.ebay.com/itm/KCNC-Road-B...53.m1438.l2649 |
Oh, thanks for the find @noodle soup. My bike is in with the LBS for fixing, and they called me to let me know they had located a lower portion of the derailleur. So I think I'll be good.
@Kimmo Not a bad suggestion! |
|
All times are GMT -6. The time now is 02:36 PM. |
Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.