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Re: Motorcycle front-end Geometry

To: "Keith Turk" <kturk@ala.net>, <land-speed@autox.team.net>
Subject: Re: Motorcycle front-end Geometry
From: "Rick Byrnes" <rick@rbmotorsports.com>
Date: Thu, 11 Jan 2001 18:56:39 -0500
OH God, now he's going to do a scooter.
Keith, do you have purple leathers?

Rick Byrnes
We have enough youth...........How about a fountain of smart
www.rbmotorsports.com

----- Original Message -----
From: "Keith Turk" <kturk@ala.net>
To: "Clay, Dale" <Dale.Clay@mdhelicopters.com>; "'Henry Deaton'"
<hdeaton@verio.com>; "List Land Speed" <land-speed@autox.team.net>
Sent: Thursday, January 11, 2001 5:18 PM
Subject: Re: Motorcycle front-end Geometry


> Henry... I am throwing this opinion out there based on nothing but my
> concept of how to go fast and try and be semi reliable....
>
> I went to the Website and checked out the front end.... try as I might I
> couldn't see how the steering was applied to the front end.... nor could I
> see the real benefits from it over a simple triple clamp/ conventional
Folk
> arrangement....
>
> I guess what I am trying to say is could you enlighten me as to the
> advantages of a system this complicated....
>
> Keith ( big fan of the KISS principal )
>
> ----------
> > From: Clay, Dale <Dale.Clay@mdhelicopters.com>
> > To: 'Henry Deaton' <hdeaton@verio.com>; List Land Speed
> <land-speed@autox.team.net>
> > Subject: RE: Motorcycle Front-End Geometry
> > Date: Thursday, January 11, 2001 4:01 PM
> >
> > Henry,
> >
> > I don't have much experience with "lay down" bikes but those numbers are
> > pretty close to what fuel bikes run and they're up around 230 for blown
> > fours and 200 for twins.
> >
> > With the limited amount of travel required, I doubt you need as
> complicated
> > a suspension as that, but if you want to play with it ...
> >
> > Dale
> >
> > Hey Dick J. is that your 300K mile bemmer in the photo?
> >
> > -----Original Message-----
> > From: Henry Deaton [mailto:hdeaton@verio.com]
> > Sent: Thursday, January 11, 2001 2:44 PM
> > To: List Land Speed
> > Subject: Motorcycle Front-End Geometry
> >
> >
> > I'm finally ready to start building my electric LSR bike. Here's what
> I've
> > got planned so far:
> >
> > Hossack-style front end, 1.5" travel:
> > http://www.eurospares.com/tfoale/mmjpg/tfbmw.jpg
> > solid rear end
> > 3.5x17 front wheel, with a 120/60ZR17 tire
> > 4.5x18 rear wheel, with a 160/60ZR18 tire
> > wheelbase around 70" (bike needs to fit on my 4x8 trailer)
> > weight without rider about 600 lbs, with rider around 760 lbs.
> > Forklift motor
> > CVT snowmobile transmission
> > 270 lbs AGM batteries, 120 volts
> >
> > Speed should be in the 150 to 175 mph range? (well, ya gotta have a
goal,
>
> > right?)
> >
> > I was wondering if anyone on the list has any thoughts about front-end
> > geometry. I'm thinking of using a front rake around 40 to 45 degrees,
and
>
> > about 8 to 10 inches of trail. That's what a guy that builds dragbike
> > frames recommended to me.
> >
> > Any comments or questions would be appreciated. I've done some drag
> racing
> > with electric bikes in the past, but this LSR stuff is pretty new to me.
> > Mainly looking for tips on how to build a bike for straight-line
> stability
> > at El Mirage and Bonneville.
> >
> > BTW, only 115 days until El Mirage.
> >
> > Henry Deaton
> > SF, CA

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