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RE: [ST] Belt Drive for T5



ask BRG (aka Keith Tynan of Bristol ) he lived in Germany and is a satellite
scientist!

> -----Original Message-----
> From: Joel Ashman [mailto:joel.ashman@xxxxxxxx]
> Sent: 15 June 2001 15:25
> To: ST@xxxxxxxxxxxxxx
> Subject: RE: [ST] Belt Drive for T5
> 
> 
> Keith,
> 
> It looks like for the T5 that they try to adjust the tension 
> for the belt,
> not too tight, or not too loose, so that one setting works 
> for the travel
> length of the swingarm.
> 
> Here's the blurb, though poorly translated:
> 
> ---------
> First 700 km were put back still without entry. The adjustment of the
> tension of belt is somewhat fummelig, since the standard 
> eccentric cam is to
> be adjusted only relatively roughly. The tension of belt was 
> stopped loaded
> in such a way that the belt does not sag any longer in 
> addition, is not
> fully strained yet, in order to have reserves when bouncing.
> -----------
> 
> I guess we need to find someone on the list who speaks 
> excellent German, and
> could put in a call for us to find out more info....
> 
> --Joel
> 
> 
> -----Original Message-----
> From: owner-st@xxxxxxxxxx [mailto:owner-st@xxxxxxxxxx]On 
> Behalf Of Keith
> Tynan
> Sent: Friday, June 15, 2001 3:41 AM
> To: ST@xxxxxxxxxxxxxx
> Subject: RE: [ST] Belt Drive for T5
> 
> 
> Hi,
> 
> Forgive me if I've missed something in the euphoria 
> surrounding the belt
> drive for the strumpet 
> (http://www.t5net.de/t5-riemenantrieb.htm), but I was
> always of the impression that a toothed belt had to be tensioned. This
> article shows no evidence of such a mechanism, and leads me to be
> suspicious.
> 
> Earlier attempts have been made to marry belt drive with a 
> single-sided
> swinging arm for sportsbikes (see following upload (sorry 
> it's 200KB) from
> an article in the German "MO Magazin" from 1994, detailing the patent
> awarded to the North German firm VH (Klaus Vosteen & Hans G. 
> Helms), which
> was tested for 30,000 km on a Yamaha FZR1000 by the Technishe 
> Hochschule
> Hamburg - 90h@200kph, 40h@150kph, 30h@full accel in first 
> gear, 11h@full
> throttle.) In essence, this had a lever to rotate the axle 
> eccentric, and
> hence adjust belt tension as the suspension moved.
> 
> I noticed from the current VH website 
> (http://www.vh-motorradtechnik.de/ -
> again in German - so reach for your Babelfish) that they seem 
> to have kept
> the idea of belt drive, but focussed more on a custom 
> frame/swinging arm
> which locates the swinging arm pivot on the same axis as the 
> countershaft
> sprocket. The site seems reasonably informative regarding 
> their research
> vehicle, but gives little away (in words or pictures) regarding belt
> fitments to stock bikes - though the tensioner is still evident.
> 
> Anyone know anything more??
> 
> Regards,
> --
> BRG
> email: keith@xxxxxxxxxxxxxxx
> '00 Sprint ST BRG 'Wolfram'
> 
> 
> 
> 
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