Terminal hit
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Terminal hit
Postby Ivanerrol » Sun Jul 29, 2018 9:51 pm
I have backed into my Specialized Allez.
Bent rear derailleur - easy replace - , Slight issue with the wheel - fixed, Changed the derailleur hanger for a new one.
I suspect I have bent the aluminum rear stays - more the stay that goes from the seat down to the rear axle area.
Wont change rear gears properly - derailleur seems to be out of line.
Are bent aluminum stays repairable or once they're bent that's it?
Bent rear derailleur - easy replace - , Slight issue with the wheel - fixed, Changed the derailleur hanger for a new one.
I suspect I have bent the aluminum rear stays - more the stay that goes from the seat down to the rear axle area.
Wont change rear gears properly - derailleur seems to be out of line.
Are bent aluminum stays repairable or once they're bent that's it?
- 10speedsemiracer
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Re: Terminal hit
Postby 10speedsemiracer » Sun Jul 29, 2018 10:30 pm
I've always been of the understanding that once alloy was bent, it was toast. If it is repairable, it would be a framebuilder sort of repair, with the corresponding price tag. Possibly not viable, depends on the bike and your relationship to it..
sorry to hear btw..it's never nice facing the loss of an N
sorry to hear btw..it's never nice facing the loss of an N
Campagnolo for show, SunTour for go
- DrShifty
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Re: Terminal hit
Postby DrShifty » Mon Jul 30, 2018 5:27 pm
Have you checked the bike with a derailleur hanger alignment tool? If you can't see where the seat stay is deformed then any bend is probably very slight. It might be that you can use a hanger tool to get it aligned. The hanger is designed to bend before the frame does anyway, so it might allow you to compensate for the stay.
- Duck!
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Re: Terminal hit
Postby Duck! » Mon Jul 30, 2018 10:53 pm
Hanger alignment tool will not show if the frame is bent.
You may need an assistant... Run a string line from one dropout, around the head tube and back to the opposite dropout, ensuring to match the placement of the string on both dropouts. Measure the space between the sides of the seat tube and the string - they should be equal; if there is a larger gap on one side than the other, the frame is bent.
You may need an assistant... Run a string line from one dropout, around the head tube and back to the opposite dropout, ensuring to match the placement of the string on both dropouts. Measure the space between the sides of the seat tube and the string - they should be equal; if there is a larger gap on one side than the other, the frame is bent.
I had a thought, but it got run over as it crossed my mind.
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Re: Terminal hit
Postby Ivanerrol » Tue Aug 07, 2018 1:37 pm
And the result is..... one centimeter difference.Duck! wrote:Hanger alignment tool will not show if the frame is bent.
You may need an assistant... Run a string line from one dropout, around the head tube and back to the opposite dropout, ensuring to match the placement of the string on both dropouts. Measure the space between the sides of the seat tube and the string - they should be equal; if there is a larger gap on one side than the other, the frame is bent.
The rear wheel is not centered in the stays and the gears wont shift properly - derailleur alignment is way out.
I took the frame down to a brand name LBS - they're only interested in selling a new $$$$ bike.
Another repair shop is looking at it - although they're not to hopeful. Even if it is repaired my 100Kilo+ weight might put a repair out again in short time.
- familyguy
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Re: Terminal hit
Postby familyguy » Tue Aug 07, 2018 2:46 pm
<personal opinion>
Don't repair aluminium, except in very limited circumstances. GripSport in Vic do repairs, but I don't know that even they would touch a bent stay issue.
</personal opinion>
Jim
Don't repair aluminium, except in very limited circumstances. GripSport in Vic do repairs, but I don't know that even they would touch a bent stay issue.
</personal opinion>
Jim
- P!N20
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Re: Terminal hit
Postby P!N20 » Tue Aug 07, 2018 3:55 pm
<fact>Gripsport don't do frame repairs anymore</fact>familyguy wrote:<personal opinion>
Don't repair aluminium, except in very limited circumstances. GripSport in Vic do repairs, but I don't know that even they would touch a bent stay issue.
</personal opinion>
Jim
- familyguy
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Re: Terminal hit
Postby familyguy » Tue Aug 07, 2018 4:04 pm
<shocked>You learn something every day</shocked>
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Re: Terminal hit
Postby Ivanerrol » Tue Aug 07, 2018 5:43 pm
After careful inspection cracks were found in the derailleur side stay close to the B.B.
Even more worrying was the bike making strange noises at speed going downhill.
New frame or new bike required.
Wilier GTR Team or Specialized Roubaix? (The former is on special 40% off- is cheaper than Roubaix)
Even more worrying was the bike making strange noises at speed going downhill.
New frame or new bike required.
Wilier GTR Team or Specialized Roubaix? (The former is on special 40% off- is cheaper than Roubaix)
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- Location: Perth, Western Australia
Re: Terminal hit
Postby jackthelad » Sat Aug 11, 2018 3:12 am
New Bike,
Choose
whichever one isn't Pressfit
Choose
whichever one isn't Pressfit
SantaCruz HighTower LT
SantaCruz Blur XC Carbon
Kona Kula Supreme(Retired/Spare)
Surly Karate Monkey
Ribble Rd Bike
SantaCruz Blur XC Carbon
Kona Kula Supreme(Retired/Spare)
Surly Karate Monkey
Ribble Rd Bike
- 10speedsemiracer
- Posts: 4904
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- Location: Back on the Tools .. when I'm not in the office
Re: Terminal hit
Postby 10speedsemiracer » Sat Aug 11, 2018 3:33 am
Or something which can be made to be non-PF fairly easily.jackthelad wrote:New Bike,
Choose
whichever one isn't Pressfit
Campagnolo for show, SunTour for go
- open roader
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- Location: Dueling Banjo Country, Otway fringes, Victoria
Re: Terminal hit
Postby open roader » Sat Aug 11, 2018 5:40 pm
Wilier very light weight frames but uber thin wall = buzzy ride from my experience (Gran Turismo & Cento Uno) but after alloy Alez maybe not an issue for you......Ivanerrol wrote:Wilier GTR Team or Specialized Roubaix? (The former is on special 40% off- is cheaper than Roubaix)
3rd class cycling is always better than 1st class walking
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