If mass of anything in the drivetrain can change power readings, then I believe the dyno used is the inertia type, which measures rpm changes during test...
Its being quoted elsewhere that a clean well lubricated chain has an efficiency (of power transmission) of the order of 98%. Its hard to imagine that a belt...
RohanB
newboltz333@...
Dec 1, 2007 11:37 pm
13942
If the truth be known....I'd say the main reason Harley now uses drive belts is money,Harley knows how to make money if nothing else.And they aren't fool...
I thought the original discussion was for a PRIMARY belt drive... apples and oranges when you talk about the rear drive.. I do remember the early 750 ...
I said that but it's from memory. It might go back as far as Phil Irving. Can anyone confirm this figure? The claim is also made that a belt is lighter than a...
Ok you guys know a lot more than I do, so I haven't argued about the original question. But see if this makes any sense: Theres an implied question in Otto's...
The 1903 Harley had belt drive. This was a long way from the first of anything though.. The 1885 Daimler motorcycle had belt drive. This was the first EVER...
RohanB
newboltz333@...
Dec 2, 2007 7:43 am
13949
Quite a few of the HD riders I know prefer to have a belt before they drive those things. ... From: RohanB <newboltz333@...> To:...
If we are to lump aramid reinforced toothed synthetic polymer belts into the same category (lump) as hand split leather belts sewn with cat gut, how many ways...
Thanks John, I can see why you would use belts on road bikes, cleanliness and reduced noise being obvious advantages. I assume that they also last longer (do...
Hydraulic. I think Yamaha have made an off-roader with hydraulic front-wheel drive. I imagine that viscous losses make it too inefficient for the main ...
... Another thing that is good to know is that the belt can be easily damaged to the point of almost immeadiate failure by back bending it in the direction ...
John ... You've brought back a few memories ... my first 'motor bike' had a "friction drive". A little story for ya: Lusting unsuccessfully after a Cushman...
David Kath
BSAGS@...
Dec 2, 2007 8:08 pm
13957
Modern cam belts last as long as a chain... change intervals are 120,000 miles / 6 years. The difference is that with a chain you get swarf in the oil as...
Chains wear a minute amount in an oil-bath. Any swarf gets trapped in the oil filter. Is there zero wear with gears? A worn chain gets noisy and gives plenty...
First, where does that swarf go BEFORE it gets to the filter..? And filters are not 100% either.. eliminating swarf inside an engine is always a good ...
... front-wheel drive. I imagine that viscous losses make it too inefficient for the main transmission, though. Problems with hydraulics are several, the main...
Ian D
iwd@...
Dec 3, 2007 1:49 am
13961
Ducati belts, by Ducati Service Schedule, go 20,000 kms (12,500 miles) or 2 years. ... From: Otto Nikolaus To: mc-engine@yahoogroups.com Sent: Monday, December...
Ducati recommends checking the belts at each 6k mile check up and replace them every two years. They are rather inexpensive so most people change them every ...
Dan certainly stirred up a hornets nest when he mentioned the results of his test riding experience. I've been surprised at the knee jerk reaction against the...
Tony, I'm no fan of exposed chains on road bikes, especially in the often wet UK. I don't recall where I got that 98% from but for many, many decades we have ...
... Tony Any ideas how a non o-ring or x-ring chain , enclosed in a casing (forming the swing arm) run in a a shallow oil bath would compare to a belt? Peter ...
OK now I am taking up a collection to buy a Buell rider a set of sprockets and a brand new o-ring chain exactly equal in ratio to the stock belt system, never...
Well, that 5200 rpm limit raises an interesting question - since harley torque drops off rapidly at "higher" rpm. If the shorter geared chain drive machine...
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