Landracing Forum

Bonneville Motorcycle Speed Trials => Bville Motorcycle Speed Trials Rules Questions => Topic started by: donpearsall on August 21, 2009, 01:13:41 AM

Title: Handlebar Rule Question
Post by: donpearsall on August 21, 2009, 01:13:41 AM

I tried sending this to the BUB scrutineering email contact, but it bounced back with an over-quota error. Uh Oh. Lots of people not getting their questions answered.

The rules say the handlebars must extend 6” beyond the fork tubes. But I want to move my hands in as much as possible so I need clarification on how to measure this. The stock handlebars are angled to the rear of course so does that mean the END of the bars must be 6” away from the OUTSIDE of the tubes?
Or does it mean 6” from the outside of the tubes along a line drawn through both tubes?
I am aware of the 10” rule between thumbs. No problem.
Anyone know how this is measured?
Thanks
Don

Title: Re: Handlebar Rule Question
Post by: ol38y on August 21, 2009, 11:02:10 AM

Did you try   drewsmcserv@verizon.net   for your tech questions?

I've always interpreted it 6" outside of the fork tubes not behind. Curious what you find out.

Larry

Title: Re: Handlebar Rule Question
Post by: donpearsall on August 21, 2009, 11:21:33 AM

Thanks for that email address. I forwarded the question to Drew.
Don

Title: Re: Handlebar Rule Question
Post by: donpearsall on August 21, 2009, 11:39:47 AM

That email bounced too. Can you check to see if it is correct?
Thanks
Don

Title: Re: Handlebar Rule Question
Post by: ol38y on August 21, 2009, 11:46:46 AM

Try his profile here   AHG     it gives a website, which gives a different email and a phone number...

Title: Re: Handlebar Rule Question
Post by: Dean Los Angeles on August 21, 2009, 03:49:18 PM

The rule was put into effect to try and make sure that you had enough leverage over steering forces. The closer you move the bars toward the centerline the less leverage you are going to be able to exert with your arms. The bars might be 6" from the tube, but your arms are not going to have much leverage if the bars are pointing at you.

What you would like to do is eliminate the bars and just hang on to the triple clamp. That works for aero, just not for steering.

The tech guys know this and will rule appropriately.

Title: Re: Handlebar Rule Question
Post by: donpearsall on August 21, 2009, 11:08:39 PM

Drew Gatewood sent this image by email clarifying this rule. Just as I thought, but so much is open to interpretation.
Thanks Drew!
Don

Title: Re: Handlebar Rule Question
Post by: Dean Los Angeles on August 22, 2009, 12:15:33 PM

Handlebar length
0 degrees = 6"
15 degrees = 6 1/8"
30 degrees = 6 3/4"
45 degrees = 8 1/4"
60 degrees = 12"
75 degrees = 24 1/8"
(http://pages.sbcglobal.net/dean4/_images/Handlebar.JPG)

Title: Re: Handlebar Rule Question
Post by: Stan Back on August 22, 2009, 02:21:19 PM

I believe that at 75+ degrees they change from handlebars to tillers.

Stan

Title: Re: Handlebar Rule Question
Post by: John Noonan on August 22, 2009, 02:50:24 PM

Quote from: Stan Back on August 22, 2009, 02:21:19 PM

I believe that at 75+ degrees they change from handlebars to Wheelie bars".

Stan

Stan I fixed it for you... :-D


Dean thanks for taking the time to post that..

J