[ST] RE: belts

["Keith Tynan" <keith.tynan@xxxxxxxxxxxxx>]

Bare,

About 18 months ago, I was helping (in an administrative sense) Jürgen
Bleimund bring out a belt drive for single-sided swinging arm Trumpets
(they share the same geometry). The kit was just about to hit the market
when his prototype (i.e. the belt) went phut - after about 2000 km. He
decided not to proceed after that! Shame, it seemed like a really neat
piece of work. I think he's since removed his web article.

I think that the variable tension associated with a swinging arm has
something to do with it, though the ST's geometry results in only a very
small difference between centres: 0.57 mm !

For the record, a couple of German firms have used belts with bikes
rated well over 100 bhp, with allegedly good longevity, one of which is
http://www.vh-motorradtechnik.de/.

Regards,
- -- 
BRG
mailto:keith.tynan@xxxxxxxxxxxxx 
http://myweb.tiscali.co.uk/keith.tynan
'00 BRG Triumph Sprint ST 'Wolfram'

> -----Original Message-----
> Date: Tue, 01 Apr 2003 07:18:23 -0800
> From: Bare <barenekd@xxxxxxxxxxxxx>
> Subject: [ST] belts
> 
> I have heard (don't remember who, where, or when) that in 
> some applications belts are prone to breakage.
> 
> I had also heard of the aborted Sprint-ST-gone-belt-drive 
> experiment, and seem to remember it having something to do 
> with breakage.
> 
>   
> 
> >> for some strange
> >> reason I kept breaking the H-D belt.
> >
> 
> When Japanese motorcycle manufacturers were asked about belt drives, 
> Kawasaki said belts were only good to about 400ccs. In fact, 
> they used 
> to have a 400cc belt driven bike, (actually 440, I think)
> When Harley was mentioned, the Kwacker guy's response was, 
> "That's what 
> I said, 400ccs."
> Bare
> 

- ---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.465 / Virus Database: 263 - Release Date: 2003/03/25
 


     *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *   *
      The ST/RS Mailing list is sponsored by Jack Lilley Ltd.
          http://www.TriumphNet.com/st/lilley for more info
   http://www.TriumphNet.com/st for ST, RS and Mailing List info

=-=-=-= Next Message =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=