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  #1  
Old 12-05-2016, 06:19 PM
XMagnaRider XMagnaRider is offline
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Why Do My Rider Footpeg Springs Break So Often?

Once or twice a year, I have to replace a broken rider footpeg spring. They cost $9 each from the BMW dealer, and they are separate parts - different springs for the left and right side. I have owned my 2007 K1200GT since it was new. Here are my questions:

1. Why do my footpeg springs break so often?

I am gentle with my K1200GT. The only times that I can recall using the springs is when I am duck waddling to back up and my thighs bump into the footpegs. Occasionally the left peg bumps into me when I am pushing the bike from the side.

2. Do they break as frequently for you?

3. Do you have any suggestions about what I can do to keep them from breaking so often?

4. Do you have an alternate (read: less expensive) source for the springs?

Any advice would be appreciated.
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  #2  
Old 12-05-2016, 07:03 PM
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Re: Why Do My Rider Footpeg Springs Break So Often?

Having never even heard of a footpeg spring breaking, I'm wondering if the right parts are installed correctly?
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  #3  
Old 12-05-2016, 07:24 PM
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Re: Why Do My Rider Footpeg Springs Break So Often?

interesting.. In all my years in this biz I've never heard of anyone breaking a footpeg spring on any bike... Guess that makes you kinda special...
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  #4  
Old 12-06-2016, 09:30 AM
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Re: Why Do My Rider Footpeg Springs Break So Often?

Quote:
Originally Posted by phxazcraig
Having never even heard of a footpeg spring breaking, I'm wondering if the right parts are installed correctly?
I am buying and installing the official BMW parts (left or right spring, as appropriate) from local BMW dealers.

As far as I can tell, there is only one way to install them. NOTE: written by XMR, not from any official source:

1. Remove the retaining clip (C clip).
2. Pull the pin.
3. Replace broken spring. There seems to be only one orientation that works. One end goes into a small hole on the frame to keep the spring in position.
4. Push footpeg in place. This will apply tension to the spring.
5. While holding footpeg in place, reinsert the pin.
6. Snap retaining ring in place at the end of the pin.
7. Done.

I have found that it helps to lubricate the pin with a small amount of spray grease to make it easier to insert and remove.

That's it. Yet they still break fairly often. Any more ideas? Please?
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  #5  
Old 12-06-2016, 09:41 AM
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Re: Why Do My Rider Footpeg Springs Break So Often?

not sure how you be breaking these springs, they are not that small and fragile, I don't see a left or right specific spring either, or at least it don't show in the fiche...

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  #6  
Old 12-06-2016, 10:26 AM
XMagnaRider XMagnaRider is offline
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Re: Why Do My Rider Footpeg Springs Break So Often?

The parts are:

46717681423 - Retainer Spring Left
46717681424 - Retainer Spring Right

My new left spring has two right-angle bends. Yours has only one. Yours appears to be a right spring.

(I tried to upload photos of the new spring, but the i-bmw website had issues and I don't use an online photo sharing service. I will try again later.)
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  #7  
Old 12-06-2016, 10:40 AM
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Re: Why Do My Rider Footpeg Springs Break So Often?

sorry my bad, was looking at the wrong year of your bike

still the spring I found is not so much different, perhaps a talk with the dealership mechanics might yield a reason for the failure of the springs....?



.
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  #8  
Old 12-06-2016, 11:05 AM
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Re: Why Do My Rider Footpeg Springs Break So Often?

Do you normally keep the rider pegs up? I'd like to see pictures of the springs in place, in both up and down positions. Maybe that will give a clue.
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  #9  
Old 12-06-2016, 11:19 AM
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Re: Why Do My Rider Footpeg Springs Break So Often?

Quote:
Originally Posted by phxazcraig
Do you normally keep the rider pegs up? I'd like to see pictures of the springs in place, in both up and down positions. Maybe that will give a clue.
No. You can't keep the footpegs up. The retainer springs push the footpegs back to the normal horizontal riding position.

The footpeg hinge and spring are there so that the footpeg can move up if you are "dragging pegs" in a turn. (A rigid footpeg without a hinge might snag on the pavement and cause a high side accident.) The footpegs can also move up and out of the way if your legs bump into them, such as when you are waddling the bike backwards. The spring returns the footpeg to the normal riding position.

I will try to post photos here, but there is currently a problem with uploads. Hopefully we'll get it fixed soon, otherwise I will find another way.
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  #10  
Old 12-06-2016, 11:51 AM
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Re: Why Do My Rider Footpeg Springs Break So Often?

OK, let me make some 'educated' guesses. First guess, these a 'pusher' spings rather than 'springs under tension from pulling, like coil springs'. Second guess, these springs are breaking at a right angle bend.

Since this is so unusual, and consistent, unless installed incorrectly (somehow under too much pressure), something is weakening the springs to cause them fail. If so, two thoughts come to mind.
1. chemicals - do ride where road salt is applied for snow?
2. vibration - do your footpegs have a lot of vibration?

If either of these seems possible, perhaps you could have a new set of springs anodized against corrosion, and mounted with some sort of rubber bushings that reduce vibration.
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  #11  
Old 12-06-2016, 04:17 PM
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Re: Why Do My Rider Footpeg Springs Break So Often?

I was able to upload the image files. The problem was the i-bmw website was rejecting my uploads earlier today. When I tried again this afternoon, it worked.

There are two images of the replacement left footpeg spring part, and there are two images of the working right footpeg spring. One is is the normal footpeg down for riding position. The other is in the rotated out of the way position.

P.S. Before anyone else comments, here are two additional pieces of information:

1. I ride with the Verholen peg lowering kit. I note that the attachment is identical to the one on the motorcycle, but perhaps its lower, more forward position has something to do with the issue. Sorry I forgot to mention it earlier, but I take it so much for granted that I simply forgot.

2. To answer Craig's question:
The springs always break at an arbitrary place somewhere in the middle of the coil; they never break at the right angles near the ends of the spring. The spring is a torsion spring. The spring forces are along the circumference of the coil trying to tighten the coil itself; the coil loosens as it rotates the footpeg back into position.

Here are the images:








Thanks again to those who offered to post the images on their own social media or personal websites.

P.S. - I am still having problems with images. They don't appear inline, and they appear as small generic icons, so I changed them to ordinary links. Hopefully you can see them.

(OK, one for you. When you post the photo's URL you must place the URL between these markers [img][/img] - Craig "CJS350")
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  #12  
Old 12-06-2016, 05:58 PM
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Re: Why Do My Rider Footpeg Springs Break So Often?

Here's the other photos







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  #13  
Old 12-06-2016, 07:19 PM
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Re: Why Do My Rider Footpeg Springs Break So Often?

The only other thing I could think of is if the bike (i.e., the foot peg spring) is exposed to some chemical that causes the spring steel to become brittle. I have no idea what that would be but I've never in my life ever heard of a spring steel failing.

Kent
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  #14  
Old 12-08-2016, 11:58 PM
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Re: Why Do My Rider Footpeg Springs Break So Often?

have you compared the Verholen pegs back to your factory ones to see if any dimensions for the attach points changed?
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