Motorcycle Racing Forum

Racing Discussion => Racing Discussion => Topic started by: duc995@aol.com on July 12, 2004, 09:48:11 AM

Title: Any GOOD reason for control lever length?
Post by: duc995@aol.com on July 12, 2004, 09:48:11 AM
Can anybody link of a good reason (other than increasing profit for the manufacturer) for making the brake/clutch controls so long?  They should n;t hit the ground first...so why make them so long when you only use one or two fingers to operate them?
Title: Re: Any GOOD reason for control lever length?
Post by: tigerblade on July 12, 2004, 10:01:27 AM
If there's more lever there, there's a better chance of you finding it when you need it, two fingers or four...   ???
Title: Re: Any GOOD reason for control lever length?
Post by: cornercamping on July 12, 2004, 10:37:05 AM
On my 748, I had "stubby" levers.  They were approx. half the size of normal levers, but they were double in price.  Yoyodyne use to sell them I think.  I can't remember where I got them from, but I'll look and see if I can find the reciept.  
I had them on for about a month, till one time I was in an "oh sh@t" situation, and missed the brake lever and almost ran into the back of a car.  I then went back to regular levers.
Title: Re: Any GOOD reason for control lever length?
Post by: Jeff on July 12, 2004, 12:14:25 PM
Finding the lever as mentioned, and leverage would be the other thought...  in a LONG race, hands get tired.  The shorter the lever, the higher the required force...
Title: Re: Any GOOD reason for control lever length?
Post by: Dawn on July 12, 2004, 12:46:38 PM
Paul prefers a shorter lever and cuts his off to the desired length.  He hasn't had a problem ever locating the lever.  Plus, one look at him and you can tell that his hands won't get tired.

He likes to run the shorter ones because in his words "it's less likely anyone is going to knock my brake lever off."

It may just be personal preference.

Dawn   :)
Title: Re: Any GOOD reason for control lever length?
Post by: duc995@aol.com on July 12, 2004, 01:10:52 PM
I'm going to cut mine down...to make sure that ONLY the bar hits the ground, rather than the lever.  I lost an AP racing GP radial mastercylinder in a low-side when the lever hit the ground and broke the MC rather than the lever.  I have also broken many levers in other incidents and just started realizing that there is NO reason why the lever has to be so long...especially when you have GP radials that have so much power.  One problem:

WSMC has a rule in their rule book requiring "ball shaped" ends on all control levers, of atleast 1/2 inch diameter.  I will have to locate a source of either hard plastic or aluminum  balls to mount on the end of the shortened levers to comply with the occasional venture to WSMC events.
Title: Re: Any GOOD reason for control lever length?
Post by: ecumike on July 12, 2004, 01:43:42 PM
Rob... better yet, just make them 'break-away'.. instead of cutting off completely at your desired length.. cut them ~halfway through. Then the ball will still be there, and if/when it hits the ground, it'll just break off at that point.

At least for now, until you come up with a ball end solution.
Title: Re: Any GOOD reason for control lever length?
Post by: duc995@aol.com on July 12, 2004, 02:34:27 PM
Thanks Mike.  I did do that after reading it in an ongoing Sam Flemming (AOD) article in Roadracingworld.  I would just hate to see the MC thing again...so I am a little paranoid!  Thanks for the input. ;D
Title: Re: Any GOOD reason for control lever length?
Post by: Protein Filled on July 12, 2004, 03:56:50 PM
You can always bring the lever to your local welder to have them re-attach the little ball end after you shorten the lever...

BTW, they do sell shorter levers for the Brembo GP Radial master. I believe the LP catalog has them, as well as Yoyodyne.
Title: Re: Any GOOD reason for control lever length?
Post by: duc995@aol.com on July 12, 2004, 04:07:45 PM
Thanks Edgar...

I was hoping to find a hard plastic ball...ala frame slider...and bolt it on to make a mini-me slider!  I will see how creative I can get. ::)
Title: Re: Any GOOD reason for control lever length?
Post by: Nate R on July 12, 2004, 04:28:18 PM
Got a spare lever you can send me?

Cut it to length, and I can probably make you something to fit.
Title: Re: Any GOOD reason for control lever length?
Post by: cornercamping on July 12, 2004, 04:58:02 PM
QuoteÊI will see how creative I can get. ::)

Remember that it has to pass tech  ;)  That's the tricky part  ;D
Title: Re: Any GOOD reason for control lever length?
Post by: duc995@aol.com on July 12, 2004, 09:09:16 PM
Thanks Nate!

Well...the only thing it says in the manual is that the levers have to have "ball ends" that are a minimum of 0.5 inch diameter.  Isn't much there for tech to disput as long as you meet those criteria!
Title: Re: Any GOOD reason for control lever length?
Post by: Super Dave on July 13, 2004, 07:36:09 AM
I hold my bars at the end of the grips for more leverage.  I want everything to be easy.  So, the lever needs to get out to where my hands are at.

I have actually had part of my hand rest on the bar end...
Title: Re: Any GOOD reason for control lever length?
Post by: Zac on July 13, 2004, 12:50:20 PM
For cable actuated clutches if you want a short lever just get a MX lever, the nice ball bearing style are even better.  I currently have a MSR MX lever and perch on my R6, but I prefer the stock length one for that bike.  On the brake I've never needed the stock length lever.

Back in my dirt bike days I would always drill 3 small holes (1/16 or so) in the lever and inch or so from the end to add a stress riser so the lever would break there as opposed to the perch/MC.  I've seen some Brembo stuff that has notches cast into the levers for the same purpose.

On my motard I have a shorty lever on my Brembo radial master, works awesome.  I also have handgaurds on the bike to save the lever/MC.

-z.
Title: Re: Any GOOD reason for control lever length?
Post by: lil_thorny on July 13, 2004, 03:40:19 PM
The longer the better. ;) Unless you have a powerful piston to make better use of your stubby.
Stumpy has a pretty trick set-up on his RR.

I set my levers more mid-line on the bar itself...
the bar-end is about 1" further out. You could try that. I also get better leverage in doing so.

I'm broke. Just thought that I would share.
I want to fit in. ;D

LILthorny
Title: Re: Any GOOD reason for control lever length?
Post by: stumpy on July 13, 2004, 05:15:30 PM
Yep,
 Called my buddy Sete and he sent me a set of his spares, they just happen to fit the RR. Very trick!




Stumpy
Title: Re: Any GOOD reason for control lever length?
Post by: Spooner on July 13, 2004, 09:52:46 PM
I run my clipons out pretty wide-then I get more leverage at the bars, plus I can run my mc more inboard so I only pull at the end of the lever.  That helped my braking abilities tremendously.  

I know in a mag once I saw a bike that had levers that hinged up so they naturally were in the regular location, but when you crashed they should not break...

-Nick