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Author Topic: Torque steer.  (Read 194 times)

Offline skippyc

  • Posts: 339
  • Shouldn't have sold them old bikes.
Torque steer.
« on: May 01, 2021, 11:13:09 PM »
I had a R75/5 and it loved to react to acceleration. But the R65 doesn't react at all.
So What is the difference is it a lighter flywheel?

Offline Tony Smith

  • Posts: 2274
  • Graduate, Wallace and Gromit School of Engineering
Re: Torque steer.
« Reply #1 on: July 14, 2021, 05:49:35 AM »
In a word - yes. I notice it shifting between my 860 and the wife's R65/80. The heavy flywheel was fitted the the R80 engine to avoid having to also got a late model gearbox.
1978 R100RS| 1981 R100RS (JPS) | 1984 R65 | 1992 KLE500 | 2002 R1150GSA |

Offline georgesgiralt

  • Posts: 1265
  • I Love YaBB 2!
Re: Torque steer.
« Reply #2 on: September 24, 2021, 02:41:17 PM »
Hi Guys,
I'm very late on this, but the flywheel is only a very small part of the equation. (and for 1979 model, it is quite the same as on the /5... )
The main improvement where first the gearbox input with it's spring shock absorber. Then they put another one in the swing arm and that did the trick.
On the 1981 model, they lightened the clutch and added some smoothness to the ride.
I also own a Guzzi (V7-III, E4 model) and I miss the big spring in the swing arm a lot. The bike react violently at every bump, even with the most expensive shocks and a lot of tuning...