Bent swingarm repair?

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Geezer
Posts: 2700
Location: Busy w/Mrs Robinson

Bent swingarm repair?

Postby Geezer » Wed Oct 13, 2010 7:31 am

My TranceX swingarm is bent, or spread apart at the dropouts, a little. Maybe one-half inch - 12.5mm. This "spread" is making it tricky to install the back wheel.

What is the usual rear dropout spread - 135mm? Mine is now close to 150mm. Heck, a 150mm hub would probably drop right in. :lol:

Any ideas or experience with restoring the swingarm to the original, or close, width at the dropouts?

Thanks all,
Terry

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Dr.Dover
Posts: 7031
Location: Kansas City - Northland

Re: Bent swingarm repair?

Postby Dr.Dover » Wed Oct 13, 2010 8:44 am

I had a Trance at one time. I bent the rear swing arm on a rock when I endo'd at Spiderfest a few years ago. If I recall correctly it cost me about $150 to replace. The repair was done at The Wheel. Not sure what it would cost these days.

Give Dirt Diva a shout at The Wheel and I'm sure she will take care of you.

Ben :D
Volunteers do not necessarily have the time; they just have the heart. ~Elizabeth Andrew

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Possum
Posts: 6098
Location: Public Enemy Numb er 1

Re: Bent swingarm repair?

Postby Possum » Wed Oct 13, 2010 2:07 pm

Yeah, it's not a 29er, so she can get the parts. :wink:
Bike racing is good. The people you meet, the struggles you overcome, the highs and lows, the downhills, the finish lines. Bikes in general just make us better people. -Cameron Chambers

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Ryno
Posts: 614
Location: LSMO

Re: Bent swingarm repair?

Postby Ryno » Wed Oct 13, 2010 3:13 pm

Possum wrote:Yeah, it's not a 29er, so she can get the parts. :wink:


Man that is a big stick you are stirring with... :shock:

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The Chaplain
Posts: 508
Location: Gambril Park
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Re: Bent swingarm repair?

Postby The Chaplain » Wed Oct 13, 2010 7:51 pm

Terry,
Before buying a new one, try laying it on it's side and standing on it.

Geezer wrote:My TranceX swingarm is bent, or spread apart at the dropouts, a little. Maybe one-half inch - 12.5mm. This "spread" is making it tricky to install the back wheel.

What is the usual rear dropout spread - 135mm? Mine is now close to 150mm. Heck, a 150mm hub would probably drop right in. :lol:

Any ideas or experience with restoring the swingarm to the original, or close, width at the dropouts?

Thanks all,
Terry
May the good Lord Bless
What is on my mind,
Comes off of my tongue...
and remains in my heart.

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Geezer
Posts: 2700
Location: Busy w/Mrs Robinson

Re: Bent swingarm repair?

Postby Geezer » Thu Oct 14, 2010 5:49 am

Chaplain, I think I will try that. Also considered buying a longish piece of threaded rod and, along with some nuts and flat washers, pulling the swingarm back to about 135mm.

Terry

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Geezer
Posts: 2700
Location: Busy w/Mrs Robinson

Re: Bent swingarm repair? It worked!!

Postby Geezer » Fri Oct 15, 2010 7:43 am

Thanks again for the ...stand on it... idea. It totally and painlessly worked!

I removed the swingarm and placed it on a carpet remnant/sample. (God forbid I SCRATCH my bike - ha, ha,) Then I gradually applied some weight, much less than my total weight, to the swingarm and soon felt it "give" a little. So I checked the wheel fit and BINGO, perfect.

:D Terry :D

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Olathejoe
Posts: 10067

Re: Bent swingarm repair?

Postby Olathejoe » Fri Oct 15, 2010 9:16 am

Two words: metal fatigue

I'm willing to bet if you strip the paint off the swing arm you'll find cracks somewhere.
If and incomplete sentence lands in the forest.

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Geezer
Posts: 2700
Location: Busy w/Mrs Robinson

Re: Bent swingarm repair?

Postby Geezer » Sat Oct 16, 2010 9:02 am

Swingarm is not painted at all, but is anodized in black. The swingarm also has a few dents in it. Imagine that! :lol:

Terry


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