Author Topic: Brake Pedal Height  (Read 2873 times)

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Offline YT

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Brake Pedal Height
« on: May 19, 2012, 04:12:21 pm »
 I am the proud owner of a recently purchased '05 Concours. It has what appears to be the Genmar(or similar) peg lowering brackets. Using this system causes the brake pedal to be up very high and at a very awkward working height(too high). I see there seems to be some adjustment in the brake pedal but it appears to be quite limited. I don't like the idea of raising my whole foot to "stomp" on the rear brake. It appears that my only solution is to cut the brake pedal lever and weld it back together at a more comfortable working height. Being that this brake pedal is aluminum, I don't think that bending it would be a viable option. Any alternative suggestions and/or ideas would be greatly appreciated. Thanks!!  Dave "YT" Hoover

Offline WillyP

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Re: Brake Pedal Height
« Reply #1 on: May 19, 2012, 04:38:45 pm »
I wouldn't go cutting and welding until you have actually tried the adjustment. Because of the leverage factor, a small adjustment will move the pedal a much larger amount.
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Offline Slybones

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Re: Brake Pedal Height
« Reply #2 on: May 19, 2012, 05:04:19 pm »
Actually you cut different location.  REmove the brake lever and cut about a 1/4 inch or so from the end of the threads on the adjuster. This will allow you to adjust it down lower.

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Offline Slybones

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Re: Brake Pedal Height
« Reply #3 on: May 19, 2012, 05:08:38 pm »
Dont go too crazy. Remove only about 1/4 inch and then leave off the lock nut. This lets you adjust down low enough. Also if you ever remove the lowers and put the stock pegs back on, it can be returned to stock height. Assuming you dont go crazy. I have done it, so I know in my case I was able to reset to stock height.
« Last Edit: May 19, 2012, 09:33:49 pm by Slybones »
2003 Concours, 121K
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Offline Outback Jon

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Re: Brake Pedal Height
« Reply #4 on: May 19, 2012, 08:04:58 pm »
I've got to cut mine, but I have long since lost the adjuster nut.  Does anyone know the dimensions of the nut so I can pick one up before I do the disassembly?
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Offline Slybones

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Re: Brake Pedal Height
« Reply #5 on: May 19, 2012, 09:40:07 pm »
I just left the locknut off. Been riding w/o one on there for about 6 years now. I think since the adjuster part has a bolt with a cotter pin in it that attaches to the brake lever, and the brake lever does not rotate, I am not sure why we need the lock nut there.

Removing the locknut and trimming the end of the rod some is what will allow you to turn that adjuster down far enough. In my first pic with the locknut that is how it came stock. In the second pic w/o the locknut, that is how I have been riding it for years. Tha gap between the end of the adjuster and the black rubber boot is probably less than the locknut. Or very close. I just left it out.
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Offline YT

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Re: Brake Pedal Height
« Reply #6 on: May 20, 2012, 03:17:13 am »
Slybones: Thank you so much for the info from someone who has been there and done that. The description was great and the pics were super. Completed the mod on my bike and now I can run safely/comfortably. I first tried it with the nut on and picked up an inch simply by adjusting it. Cut off a quarter inch and eliminated the nut to pick up another inch. Now it is just right. I think I'm going to like this forum. Thanks again for this easy fix!!!  Dave "YT" Hoover

Offline WillyP

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Re: Brake Pedal Height
« Reply #7 on: May 20, 2012, 11:04:33 am »
What prevents the threaded rod from turning?
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Offline YT

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Re: Brake Pedal Height
« Reply #8 on: May 20, 2012, 11:31:39 am »
Well....now that the locknut is gone....probably nothing but a little friction keeps the threaded rod from turning. What would cause it to turn? Vibration and use I suppose. I was going to grind the nut down to very thin, but decided against it. I guess a guy could go to a bolt store and find/order a very thin jam nut(low profile nut) if he thought this might become a serious issue. Change in brake pedal height would probably occur very slowly over a long period of time. If one were to notice a change, then this issue would need to be addressed. Personally, i'm not going to worry much about it.

Offline Slybones

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Re: Brake Pedal Height
« Reply #9 on: May 20, 2012, 05:04:04 pm »
What prevents the threaded rod from turning?

The fact its connected to your brake pedal?  Have you ever seen your brake pedal rotate in such a way as to make the rod turn?  Thats my guess. -- Of course not referring to the pivot action which engages the brake. Seems like this makes the rod move in and out, but not rotate.

I have had it this way for 6 years now and never had the brake pedal height change. Pretty much every one who has installed the Genmar lowers or Murphs Knee savers has had to lower the pedal. I know I am not the only one who trims this and leave the locknut off. I have yet to read a thread / post indicating it was a problem. So I too choose not to worry about it.

« Last Edit: May 20, 2012, 05:14:29 pm by Slybones »
2003 Concours, 121K
2005 GL1800ABS, 52K
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Offline Outback Jon

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Re: Brake Pedal Height
« Reply #10 on: May 20, 2012, 07:11:09 pm »
What prevents the threaded rod from turning?

The fact its connected to your brake pedal?  Have you ever seen your brake pedal rotate in such a way as to make the rod turn?  Thats my guess. -- Of course not referring to the pivot action which engages the brake. Seems like this makes the rod move in and out, but not rotate.

I have had it this way for 6 years now and never had the brake pedal height change. Pretty much every one who has installed the Genmar lowers or Murphs Knee savers has had to lower the pedal. I know I am not the only one who trims this and leave the locknut off. I have yet to read a thread / post indicating it was a problem. So I too choose not to worry about it.
+1.  6 years and about 50k miles since I got rid of the locknut on mine.  Hasn't come loose yet.
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Offline Slybones

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Re: Brake Pedal Height
« Reply #11 on: May 20, 2012, 08:52:19 pm »
One curiosity that I had was the close proximity of the aduster to the rubber boot, and having been a long time not remembering whats under there and if it interferes. So I went and took a few pics. One thing I see is the lever ratio is such that several inches of pedal movement only amounts to a small movement in the rod. In my current adjustment the rod is not very far away as we can see. When the brake lever was applied it just barely hit and depressed the rubber boot a very small amount. Did not appear to be a big deal. But it did touch.

So here are my very dirty pics. I guess that rain washing here in WASHINGton is not doing a very good job.

Brake pedal off


Brake Pedal on


One looking down so we can  see the brake padal arm connected to the adjuster with the pin and cotter pin holding it in place, all mounted behind the peg bracket. Not sure how this is going to rotate.
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Offline WillyP

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Re: Brake Pedal Height
« Reply #12 on: May 21, 2012, 12:07:12 am »
Not to pick a fight or anything, but the brake pedal keeps the clevis from turning, not the rod. And I'm am not arguing that the rod would turn, if it's lasted you 5 years I certainly wouldn't worry about it, if I were you, but being me, I would probably put a drop of blue locktite on it..
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Offline Slybones

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Re: Brake Pedal Height
« Reply #13 on: May 21, 2012, 03:56:42 am »
Not to pick a fight or anything, but maybe I did put lock tight on it.
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Offline Patrick

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Re: Brake Pedal Height
« Reply #14 on: May 21, 2012, 04:07:48 am »
Why is purple Loctite grape-flavored? Why do I know that?
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Offline kd50

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Re: Brake Pedal Height
« Reply #15 on: May 23, 2012, 02:24:57 am »
Why is purple Loctite grape-flavored? Why do I know that?

I wonder what red would taste like. Probably  like a fireball.
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