Author Topic: Flipped bike  (Read 1214 times)

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Offline dcooksey001

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Flipped bike
« on: June 03, 2016, 03:58:25 PM »
OK so flipped my bike on high end. Long story short not sure if the frame is bent behind the first cross bracket in the seat(if so I can chop it and make it a one seater) or if it's the swing arm. Any ideas on how to figure out where she's bent at?

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Offline calj737

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Re: Flipped bike
« Reply #1 on: June 03, 2016, 05:31:17 PM »
Center stand? If so, prop it up, use multiple levels and plumb bobs and tape measurements. If you want to know exactly, take it to someone who has a frame jig and have them verify it.
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Online beemerbum

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Re: Flipped bike
« Reply #2 on: June 03, 2016, 07:32:23 PM »
How do you "flip" the bike. Are you OK? How did it happen?

Offline Hondawggie

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Re: Flipped bike
« Reply #3 on: June 04, 2016, 01:11:40 AM »
OK so flipped my bike on high end. Long story short not sure if the frame is bent behind the first cross bracket in the seat(if so I can chop it and make it a one seater) or if it's the swing arm. Any ideas on how to figure out where she's bent at?

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What model bike and year do you have?

I had a buddy who bought a known-good frame with papers and transferred all his good bits onto the frame over a 2 week period while taking a full engineering course load in college.

If it's a Sandcast, well maybe it's worth fixing - but if you want to ride, have you considered a visibly straight, good frame with papers?       The cost to replace could be less than the cost to repair.

I've bought frames in the $200 to $400 range.

Offline dcooksey001

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Re: Flipped bike
« Reply #4 on: June 04, 2016, 04:11:59 AM »
How do you "flip" the bike. Are you OK? How did it happen?
Had a dog run out in front of me, luckily I was able to swerve and miss it,  but hit a ditch line doing about 65-70mph. Fractured spine and a few fractured ribs but nothing too major

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Offline dcooksey001

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Re: Flipped bike
« Reply #5 on: June 04, 2016, 04:15:28 AM »
OK so flipped my bike on high end. Long story short not sure if the frame is bent behind the first cross bracket in the seat(if so I can chop it and make it a one seater) or if it's the swing arm. Any ideas on how to figure out where she's bent at?

Sent from my SM-S902L using Tapatalk

What model bike and year do you have?

I had a buddy who bought a known-good frame with papers and transferred all his good bits onto the frame over a 2 week period while taking a full engineering course load in college.

If it's a Sandcast, well maybe it's worth fixing - but if you want to ride, have you considered a visibly straight, good frame with papers?       The cost to replace could be less than the cost to repair.

I've bought frames in the $200 to $400 range.
Well it's actually my newer bike (2000 Honda nighthawk 250) my 72 500 (mostly rebuilt by threads here) is my main bike, but I love how snappy my little 250 was lol

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Offline calj737

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Re: Flipped bike
« Reply #6 on: June 04, 2016, 04:19:55 AM »
Is there any visible damage? Are the rear shocks still plumb? Is the tire (rear) tracking straight?

Lay a long metal straight edge along the drive chain, and slowly rotate the rear wheel so the chain travels. Many of these examinations you can do yourself. Glad you're alive and well after your accident.
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline dcooksey001

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Re: Flipped bike
« Reply #7 on: June 04, 2016, 10:10:39 AM »
I'm thinking when the tail end hit the ground it bent the back of the frame to the left a little but in can't tell if it's bent at the back of the frame or ifnits the swing arm

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Offline calj737

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Re: Flipped bike
« Reply #8 on: June 04, 2016, 10:32:56 AM »
Swing arm "legs" do bend pretty easily. Also, the top mounting stud where the shock attaches can also get tweaked. You're going to have start doing some inspection to help isolate if and where...
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis