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PostPosted: Wed Nov 30, 2016 7:10 pm 
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Joined: Fri Jun 03, 2016 5:08 pm
Posts: 514
So I got an indoor trainer. Never had one before, but seemed simple enough. Take wheel off. Stick it on trainer cassette.

Next day I noticed this when trying to get wheel on.

Image

I don't even know what this part is called. Can it be replaced? I bent off the offending silver piece so I could get the wheel on. Is it safe to ride until I learn how to fix it?

Bonus: how can this even happen :shock:


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Posted: Wed Nov 30, 2016 7:10 pm 


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PostPosted: Wed Nov 30, 2016 7:20 pm 
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Joined: Fri May 25, 2007 6:43 pm
Posts: 3044
It looks like a reinforcing plate for the carbon (?) dropout. Stop the axle end eating the dropout.

Unfortunately the material was too thin where the hole was drilled. And it wasn't well stuck down.

I doubt you'll be able to get it as a spare. You could try gluing the piece back down with some epoxy. (Don't get any on the screw)

Other than that, not a very good design!

And I'd not want to ride far with it like that. The axle end won't be loaded up against the drop out properly. Might damage the frame. Or the wheel might pop out.


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PostPosted: Wed Nov 30, 2016 7:23 pm 
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Joined: Tue May 23, 2006 9:39 pm
Posts: 780
bent hanger. look up at a few places, but try here....

http://derailleurhanger.com/


edit...oh, i just noticed it was on the inside. probably bend it back in and epoxy...clamp down.

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PostPosted: Wed Nov 30, 2016 7:27 pm 
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Posts: 514
Crap. Have to go bin hoking for it!


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PostPosted: Wed Nov 30, 2016 7:57 pm 
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What bikeframe is that?


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PostPosted: Wed Nov 30, 2016 8:14 pm 
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Joined: Tue Jan 28, 2014 6:52 pm
Posts: 856
It doesn't look like the trainer had anything to do with that.

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PostPosted: Wed Nov 30, 2016 11:56 pm 
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Joined: Sat Feb 07, 2009 5:52 am
Posts: 450
Don't agree. Clamping the frame to a trainer introduces a constraint to the system, i.e. a significant amount of torque is now applied through the dropouts, for example when climbing onto the bike. If the design is marginal, it can be exposed by mounting on a trainer.

In any case, I think the area which has been torn away needs to be built up again with a similarly hard material in order to ensure equal clamping forces around the dropout. I think you can apply epoxy, move that bent material back into place. Coat your axle end with wax, then clamp it lightly back in the dropouts to squeeze out the excess epoxy.


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PostPosted: Thu Dec 01, 2016 1:07 am 
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Help us to help you. What frame and what trainer?


Sent from my iPhone using Tapatalk

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PostPosted: Thu Dec 01, 2016 3:38 am 
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I hate that design with the super small allen bolts. I got a bike with them so I filled them with silicone so they wouldn't get filled with road goo and corroded.


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PostPosted: Thu Dec 01, 2016 7:01 am 
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Joined: Fri Jun 03, 2016 5:08 pm
Posts: 514
Thanks guys, frame is my Workswell FM066. Got it in September for a winter build. Got just 500 miles on it according to Strava. The trainer is a Tacx Neo. Done about 80 miles on it since Monday.

Haven't been going hardcore or anything :x

Too tired last night to search the link for a part, will try today. Emailed Workswell to see if they had a spare part..

Also going to try and find that spare piece in the rubbish tonight and see about having a go gluing it as above :|


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PostPosted: Thu Dec 01, 2016 11:03 am 
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Joined: Fri May 25, 2007 6:43 pm
Posts: 3044
Problem with getting a part is that you'll have to peel the rest of the part off, and it might be glued properly........ (might damage the dropout, but unlikely if you are careful)

Time for a good rumamge in the bin!


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PostPosted: Thu Dec 01, 2016 2:45 pm 
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Joined: Thu Mar 08, 2012 11:43 pm
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Shrike wrote:
Too tired last night to search the link for a part, will try today. Emailed Workswell to see if they had a spare part..

On any major brand that would be a warranty frame replacement.


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PostPosted: Thu Dec 01, 2016 3:19 pm 
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Argh nightmare, so I have to decide then.. Workswell said they'd send a new part for 15USD. If I can't find the broken bit I'll have to go for that I guess :x


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PostPosted: Thu Dec 01, 2016 3:41 pm 
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Joined: Sat Feb 07, 2009 5:52 am
Posts: 450
if you can't locate the damaged piece, just cut some similar gauge stainless (assuming that's what the original material is) and bond it in. Doesn't need to fit perfectly, it only has to allow the clamping load to cross the gap and extend down to the bottom of the dropout. Your frame will be fine.


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Posted: Thu Dec 01, 2016 3:41 pm 


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PostPosted: Thu Dec 01, 2016 3:43 pm 
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Joined: Fri Dec 06, 2013 9:08 am
Posts: 322
Location: Slovakia
wingguy wrote:
Shrike wrote:
Too tired last night to search the link for a part, will try today. Emailed Workswell to see if they had a spare part..

On any major brand that would be a warranty frame replacement.


It might not be, because carbon frames tend to have it forbidden to use them with indoor trainer.
This might be one of the reasons why. I have never thought why should there be a such problem.


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