Author Topic: Bent handlebars after fall  (Read 16091 times)

Offline Motorhobo

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Bent handlebars after fall
« on: September 28, 2016, 07:00:15 AM »
Bike fall down. Go f*&^%ing boom.

It was on the lift -- either tie-down failure or operator error, either way, it was some form of operator error, so chalk it up to s**t happens, dumbass. Anyway, it fell onto a work table placed next to the lift. The entire weight of the fall landed on the bar end of the handlbars, resulting in the whack shown in the attached pic.

My approach would be to put the front wheel in a chock, crank down the handlebar pinch bolts some, then use hose clamps to affix a crowbar to the bar at the best angle for prying the bent side back downward into shape.

If anyone has a better method or thinks that's a bad idea, let me know. I don't want to have to pull those bars off the bike because that's a huge pain in the ass. I have another set of bars but they're the stainless and have rust. Once concern would be that the handlebar clamp wouldn't hold the bars with that torque and would strip through -- but that didn't happen during the fall so I think that'd be unlikely with a more controlled, manually applied force.
1994/1995 K75 ABS Frankenbike: original engine 136k miles, frame from Gary Weaver (RIP), 173k miles -- Current Odometer: 198k miles
1994 K75 since 2013, 82,000 mi (19k mine) w/California Sidecar Friendship II Sidecar & Black Lab 'Miss B' - RIP

Past: 1974 Honda 550/4 (first bike), 1994 K75 (sold), 1995 K75 ABS (parts bike), Sidecar Dog & Best Bud 'Bo' - RIP

Offline Scott_

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Re: Bent handlebars after fall
« Reply #1 on: September 28, 2016, 07:47:47 AM »
I'd be more worried about the handle bar "pinch bolt" mounts themselves not being able to handle the torque as they are mounted in rubber bushings, and in essence "floating", not really a rigid mount.

You won't like my suggestion, but I'll be the 1st to suggest that you get a new set of bars.

To properly straighten it, it really needs to be off the bike and stripped of all the "stuff" so you can really get it right.
By the time you go through all the disassembly to get them 'clean' you are exactly at the point to put all the stuff on a new bar set and be riding.

Good luck.
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Offline Laitch

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Re: Bent handlebars after fall
« Reply #2 on: September 28, 2016, 07:53:15 AM »
Which style of bar is that, Motorhobo?
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Offline brianhinton

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Re: Bent handlebars after fall
« Reply #3 on: September 28, 2016, 08:09:33 AM »
Those look like the T style bars....also my 2 cents would be to change the bars avoiding any chance of problems with the Triple tree alignment. You don't have heated grips do you? If you don't, the exchange should be fairly easy.


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Offline Motorhobo

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Re: Bent handlebars after fall
« Reply #4 on: September 28, 2016, 08:10:34 AM »
I'd be more worried about the handle bar "pinch bolt" mounts themselves not being able to handle the torque as they are mounted in rubber bushings, and in essence "floating", not really a rigid mount.


Thanks Scott -- that's what I needed to hear. I'll take a look at that before I do anything.

They are RT bars, and like I said I have another set but these are black and the other ones are stainless and I'd have to deal with the rust and paint them. Fortunately -- no OEM heated grips on this bike because swapping those out is a PITA of mammoth proportions.

1994/1995 K75 ABS Frankenbike: original engine 136k miles, frame from Gary Weaver (RIP), 173k miles -- Current Odometer: 198k miles
1994 K75 since 2013, 82,000 mi (19k mine) w/California Sidecar Friendship II Sidecar & Black Lab 'Miss B' - RIP

Past: 1974 Honda 550/4 (first bike), 1994 K75 (sold), 1995 K75 ABS (parts bike), Sidecar Dog & Best Bud 'Bo' - RIP

Offline brianhinton

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Re: Bent handlebars after fall
« Reply #5 on: September 28, 2016, 08:11:10 AM »
And....just to throw this out there.....I have a set of T bars that I could send you...just saying, [emoji4]


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Offline Motorhobo

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Re: Bent handlebars after fall
« Reply #6 on: September 28, 2016, 08:19:56 AM »
So what are the T bars? According to the Lieberry, there are only 4 kinds of K-bike handlebars -- don't see a T listed.

Just curious -- thanks for the offer, though -- I'll just use the ones I have for now and maybe try to unbend them some other time.
1994/1995 K75 ABS Frankenbike: original engine 136k miles, frame from Gary Weaver (RIP), 173k miles -- Current Odometer: 198k miles
1994 K75 since 2013, 82,000 mi (19k mine) w/California Sidecar Friendship II Sidecar & Black Lab 'Miss B' - RIP

Past: 1974 Honda 550/4 (first bike), 1994 K75 (sold), 1995 K75 ABS (parts bike), Sidecar Dog & Best Bud 'Bo' - RIP

Offline Inge K.

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Re: Bent handlebars after fall
« Reply #7 on: September 28, 2016, 08:26:04 AM »
I'd be more worried about the handle bar "pinch bolt" mounts themselves not being able to handle the torque as they are mounted in rubber bushings, and in essence "floating", not really a rigid mount.

Thanks Scott -- that's what I needed to hear. I'll take a look at that before I do anything.


The bars isn't rubber mounted on the K75's........they're (to) smooth, so it isn't needed.
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Offline Motorhobo

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Re: Bent handlebars after fall
« Reply #8 on: September 28, 2016, 08:35:30 AM »
So Inge, have you ever tried to unbend bent bars while on the bike?
1994/1995 K75 ABS Frankenbike: original engine 136k miles, frame from Gary Weaver (RIP), 173k miles -- Current Odometer: 198k miles
1994 K75 since 2013, 82,000 mi (19k mine) w/California Sidecar Friendship II Sidecar & Black Lab 'Miss B' - RIP

Past: 1974 Honda 550/4 (first bike), 1994 K75 (sold), 1995 K75 ABS (parts bike), Sidecar Dog & Best Bud 'Bo' - RIP

Offline Inge K.

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Re: Bent handlebars after fall
« Reply #9 on: September 28, 2016, 08:38:21 AM »
So Inge, have you ever tried to unbend bent bars while on the bike?

Not on a K.
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Offline Inge K.

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Re: Bent handlebars after fall
« Reply #10 on: September 28, 2016, 08:41:20 AM »
So what are the T bars? According to the Lieberry, there are only 4 kinds of K-bike handlebars -- don't see a T listed.

K75T was US only........a naked model with a lot touring extras, put together by BMW USA.
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Offline Motorhobo

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Re: Bent handlebars after fall
« Reply #11 on: September 28, 2016, 08:42:59 AM »
Not on a K.

Hmmm...well, I'll take that to mean you have tried it on other bikes and it did work, or else you'd have mentioned that it didn't work  :dunno
1994/1995 K75 ABS Frankenbike: original engine 136k miles, frame from Gary Weaver (RIP), 173k miles -- Current Odometer: 198k miles
1994 K75 since 2013, 82,000 mi (19k mine) w/California Sidecar Friendship II Sidecar & Black Lab 'Miss B' - RIP

Past: 1974 Honda 550/4 (first bike), 1994 K75 (sold), 1995 K75 ABS (parts bike), Sidecar Dog & Best Bud 'Bo' - RIP

Offline Inge K.

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Re: Bent handlebars after fall
« Reply #12 on: September 28, 2016, 08:47:07 AM »
Hmmm...well, I'll take that to mean you have tried it on other bikes and it did work, or else you'd have mentioned that it didn't work  :dunno

That as on small bikes back in the stone age, the K bars seems more solid.
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Offline Motorhobo

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Re: Bent handlebars after fall
« Reply #13 on: September 28, 2016, 08:54:51 AM »
OK, thanks everyone for your input -- I'll consider my options.
1994/1995 K75 ABS Frankenbike: original engine 136k miles, frame from Gary Weaver (RIP), 173k miles -- Current Odometer: 198k miles
1994 K75 since 2013, 82,000 mi (19k mine) w/California Sidecar Friendship II Sidecar & Black Lab 'Miss B' - RIP

Past: 1974 Honda 550/4 (first bike), 1994 K75 (sold), 1995 K75 ABS (parts bike), Sidecar Dog & Best Bud 'Bo' - RIP

Offline brianhinton

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Re: Bent handlebars after fall
« Reply #14 on: September 28, 2016, 09:39:45 AM »
Sorry, I mean I have a K75T....early unfaired touring model. From the picture it looked like the same bars. Tall bars that sit you in a more upright position. Mine are black and in good shape, just let me know if you want me to send them to you :)


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Offline Motorhobo

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Re: Bent handlebars after fall
« Reply #15 on: September 28, 2016, 10:06:22 AM »
Thanks Brian -- I appreciate the offer, kind of mitigates the self-loathing from dropping the bike off the lift. Maybe I'll try to bend them back, and if I screw that up, you can send me a completely new front end  :eek:

Let me think about my options and I'll PM you.
1994/1995 K75 ABS Frankenbike: original engine 136k miles, frame from Gary Weaver (RIP), 173k miles -- Current Odometer: 198k miles
1994 K75 since 2013, 82,000 mi (19k mine) w/California Sidecar Friendship II Sidecar & Black Lab 'Miss B' - RIP

Past: 1974 Honda 550/4 (first bike), 1994 K75 (sold), 1995 K75 ABS (parts bike), Sidecar Dog & Best Bud 'Bo' - RIP

Offline Chaos

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Re: Bent handlebars after fall
« Reply #16 on: September 28, 2016, 12:17:27 PM »
Good luck with the bars.  You probably already know this but it would be a good idea to re-align your fork tubes after all is said and done. 
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Offline kennybobby

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Re: Bent handlebars after fall
« Reply #17 on: September 28, 2016, 12:43:58 PM »
i've bent S bars back straight while on the bike.  They are much shorter with less lever arm than yours.

The trick is to use some long lever arms on both sides and loosen the pinch bolts so you don't break the top triple tree bar mounts.  i think you will be surprised with how easy they bend.

Your bike should be easier since you have those long bare riser sections with which to use to apply torque without damage to grips, or if the bar ends are open you can insert a longish section of steel rod in each side and apply equal and opposite torque.  The pinch mounts might hold but i wouldn't want to chance cracking one off.
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Offline Motorhobo

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Re: Bent handlebars after fall
« Reply #18 on: September 28, 2016, 01:43:41 PM »
i've bent S bars back straight while on the bike.  They are much shorter with less lever arm than yours.

The trick is to use some long lever arms on both sides and loosen the pinch bolts so you don't break the top triple tree bar mounts.  i think you will be surprised with how easy they bend.

Your bike should be easier since you have those long bare riser sections with which to use to apply torque without damage to grips, or if the bar ends are open you can insert a longish section of steel rod in each side and apply equal and opposite torque.  The pinch mounts might hold but i wouldn't want to chance cracking one off.

Ah -- torque to both sides -- that didn't occur to me. I guess for that you need two people. I probably would have just cranked it down and tried to bend the bent end down to match the other end.

I'll give it a try -- have to find something to stick in the ends. There are bar ends on there now but they unscrew easily enough -- at least no OEM heated grips to deal with.
1994/1995 K75 ABS Frankenbike: original engine 136k miles, frame from Gary Weaver (RIP), 173k miles -- Current Odometer: 198k miles
1994 K75 since 2013, 82,000 mi (19k mine) w/California Sidecar Friendship II Sidecar & Black Lab 'Miss B' - RIP

Past: 1974 Honda 550/4 (first bike), 1994 K75 (sold), 1995 K75 ABS (parts bike), Sidecar Dog & Best Bud 'Bo' - RIP

Offline Motorhobo

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Re: Bent handlebars after fall
« Reply #19 on: September 28, 2016, 01:49:53 PM »
Good luck with the bars.  You probably already know this but it would be a good idea to re-align your fork tubes after all is said and done.

No, I didn't know that. How do you mean? Aren't they aligned automatically once they're in the triple tree bores and the pinch bolts are tightened?
1994/1995 K75 ABS Frankenbike: original engine 136k miles, frame from Gary Weaver (RIP), 173k miles -- Current Odometer: 198k miles
1994 K75 since 2013, 82,000 mi (19k mine) w/California Sidecar Friendship II Sidecar & Black Lab 'Miss B' - RIP

Past: 1974 Honda 550/4 (first bike), 1994 K75 (sold), 1995 K75 ABS (parts bike), Sidecar Dog & Best Bud 'Bo' - RIP

Offline TX brick

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Re: Bent handlebars after fall
« Reply #20 on: September 28, 2016, 03:39:37 PM »
No, I didn't know that. How do you mean? Aren't they aligned automatically once they're in the triple tree bores and the pinch bolts are tightened?

No, it is possible to twist the bars out of alignment during a drop. I first thought that had happened to you, but apparently one bar is bent. 

An unscientific way to align them is loosen the pinch bolts and twist the bars straight. I have put the front tire against a post to do this.
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Offline Chaos

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Re: Bent handlebars after fall
« Reply #21 on: September 28, 2016, 03:55:20 PM »
with the bike on the centerstand loosen the pinch bolts by the axle and the lower triple clamp. Sit on the bike and bounce the front suspension a couple times.  That should let the tubes line up naturally and relieve any misalignment.  I don't think you need to loosen the steering stem nuts but I could be wrong, or it may depend how much you tweaked the fork tubes.

  PS:  almost forgot, loosen fork brace also!
  • sw ohio
1987 K75S    VIN 0231
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Offline K1300S

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Re: Bent handlebars after fall
« Reply #22 on: September 28, 2016, 06:07:52 PM »
my first choice would be to replace the bar.

last resort, take bar off bike to bend back.

I would not ever try to bend back while on bike and risk damaging something else in the process.
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Offline Scud

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Re: Bent handlebars after fall
« Reply #23 on: September 28, 2016, 07:18:22 PM »
my first choice would be to replace the bar.

last resort, take bar off bike to bend back.

I would not ever try to bend back while on bike and risk damaging something else in the process.

+1

And clean up all your switches and check/replace the cables while you're at it. May as well flush the front brake fluid too. 
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Offline Motorhobo

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Re: Bent handlebars after fall
« Reply #24 on: September 28, 2016, 11:19:04 PM »
+1

And clean up all your switches and check/replace the cables while you're at it. May as well flush the front brake fluid too.

Did all that before bending the bars -- including new brake lines. Hence the self loathing and teeth-gnashing.
1994/1995 K75 ABS Frankenbike: original engine 136k miles, frame from Gary Weaver (RIP), 173k miles -- Current Odometer: 198k miles
1994 K75 since 2013, 82,000 mi (19k mine) w/California Sidecar Friendship II Sidecar & Black Lab 'Miss B' - RIP

Past: 1974 Honda 550/4 (first bike), 1994 K75 (sold), 1995 K75 ABS (parts bike), Sidecar Dog & Best Bud 'Bo' - RIP

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