Tech question

DRILL · Jul 27, 2010

Ok,with some of the circuits having more lefts than rights (or vice-versa) would any of the riders be setting up there handlebars with different degree offsets each side of the fork yokes,for instance if a cicuit had say 4 or 5 more lefts than right hand turns,would a rider set his right hand grip to facilitate the fact that he would be hanging off the left side more often and would like a more precise control of the twistgrip on the right.

Difficult to understand maybe but its the best way I can put it and I`d be interested to hear if anyone uses this method in MotoGP or any other class.Maybe one for Kropotkin.Ta.

babelfish · Jul 27, 2010

DRILL said:
Ok,with some of the circuits having more lefts than rights (or vice-versa) would any of the riders be setting up there handlebars with different degree offsets each side of the fork yokes,for instance if a cicuit had say 4 or 5 more lefts than right hand turns,would a rider set his right hand grip to facilitate the fact that he would be hanging off the left side more often and would like a more precise control of the twistgrip on the right.

Difficult to understand maybe but its the best way I can put it and I`d be interested to hear if anyone uses this method in MotoGP or any other class.Maybe one for Kropotkin.Ta.

The only place I've heard of off set on handle bar is ice racing. The lean angles got so extreme that they had to cut the left handle bar to avoid it to touch ground.

My knee jerk reaction to your question is: "no way". My guess is that the riders want the bike to handle the same way both sides and regardless of tracks.

DRILL · Jul 27, 2010

Babelfish said:
The only place I've heard of off set on handle bar is ice racing. The lean angles got so extreme that they had to cut the left handle bar to avoid it to touch ground.

My knee jerk reaction to your question is: "no way". My guess is that the riders want the bike to handle the same way both sides and regardless of tracks.

Japans Autoracers have them too but I`m talking more of differences of 5 to 10 degrees each side,mind you it makes sense to have the bike the same both sides like you say Babel.

There must be someone out there who has thought about or dabbled with the idea ?

BarryMachine · Jul 27, 2010

I've ridden Speedway bikes like that.

But when you set up a "slider" ( look simillar to speedway bikes but they turn corners both ways ) the bars and frame geometry was all symetrical except the pegs, they stayed with the left hand peg fixed up and forward and the rear one was like a swing down peg. This was done because there was usually only one right hand corner in the whole circuit. So most of the time you were standing on the swung down right foot with the left foot off the peg. When you came to the left hander it was awkward ........ I can see why converted mx bikes mostly took over now

With the road bikes never saw such a thing done except adaptations for guys who were ..... body symmetry challenged. Haven't seen any bars changes but have seen tank shape changes however most changes for such problems strangely got done "symmetrically". eg. say someone wanted extra dip in the tank in one area to allow for "hanging off" it got done to both sides.

But you also have to remember you can't have the bike too unbalanced. For example severe braking puts a moment around the bars if the bike is unsymetrically weighted and any amount of letting the back get offline would be very differential depending on the direction of the corner.

But it would be interesting to know if any of them do it and why, eg. does say Rider X have one arm longer than the other?

DRILL · Jul 27, 2010

BarryMachine said:
I've ridden Speedway bikes like that.

But when you set up a "slider" ( look simillar to speedway bikes but they turn corners both ways ) the bars and frame geometry was all symetrical except the pegs, they stayed with the left hand peg fixed up and forward and the rear one was like a swing down peg. This was done because there was usually only one right hand corner in the whole circuit. So most of the time you were standing on the swung down right foot with the left foot off the peg. When you came to the left hander it was awkward ........ I can see why converted mx bikes mostly took over now

With the road bikes never saw such a thing done except adaptations for guys who were ..... body symmetry challenged. Haven't seen any bars changes but have seen tank shape changes however most changes for such problems strangely got done "symmetrically". eg. say someone wanted extra dip in the tank in one area to allow for "hanging off" it got done to both sides.

But you also have to remember you can't have the bike too unbalanced. For example severe braking puts a moment around the bars if the bike is unsymetrically weighted and any amount of letting the back get offline would be very differential depending on the direction of the corner.

But it would be interesting to know if any of them do it and why, eg. does say Rider X have one arm longer than the other?

Ahhh,I see the point about braking forces.Guess thats another one of my theories shot to .... then.

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