Rear tire spin...
I have just finished a very extensive set up re-do on the Guzzi with the 565 Velorex attached... Toe In and Lean Out are really pretty good in that the rig actually goes down the road better, easier on the upper body and the right hand pull is considerably less.
I had my 200 pound Son in the car for some testing and when I turned into a parking lot to spin around, I really spun around. During a hard left hand turn at very slow speed the rear wheel spun very easily. Is this ok or is there some other adjustment that I have to turn my attention to...?
Certainly one does not turn that way while out on the road but I'm curious as to whether it should act this way..?
Thanks,
Rob
seems like you have/had too much weight forward of the SC axle, making the bike rear tire very light on sharp left turns.
in certain cases the rear bike wheel can lift completely off the ground on a left turn if the SC front end is too heavy, or SC is mounted too far forward on the axle.
you dont want that to happen!
Bob,
Yeah it really seemed like it was a one time anomaly, I had my 200# Son in the car vs his Mom who weighs less... 😉 We were just checking out the latest adjustment of lean out and I may have "thrown" the car around in that low speed left hand wingding if you know what I mean.... The rig does not give the indication that it would do this on the road.
I will go measure the lead though, I never have thinking that all was well...
Thanks,
Rob
Mnay rigs will do this. Less lead makes them do it more. Forward weight in the sidecar makes the situation worse.
It is a case of the rear tire of the bike unloading as the rig moves towards the tip over line that is between the sidecar wheel and the front wheel of the bike. If pushed hard, even at slow speed, a rig can pull the rear wheel off the ground...or...crash the nose of the sidecar into the pavement,...or...flip the bike over the sidecar. None of these are good things as the operator in a left turn is really at the mercy of the forces that got him or her into this situation to begin with. Usually rear wheel lifting happens real quick and all you can do is hang on.
Originally written by claude #3563 on 7/7/2006 8:17 AM
None of these are good things as the operator in a left turn is really at the mercy of the forces that got him or her into this situation to begin with.
It seems that I really "Made" the wheel spin, as in tried to un-weight the rear wheel by coming close to the tip over line or pushing very hard into the left turn, more of a turn around in a short radius...
I did not notice any (and I watched...!! ) pronounced diving of the front of the car during a ride after doing this wheel spin...
I will measure the lead and certainly pay attention to the front car weight.
I may join in on the Velorex Shock thread too... couple of suspension questions.
Thanks,
Rob
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