Can an inline 4 engined bike be made to behave more like a V-twin engined bike?

[Tigadee]

Will have a look and try.

[Subike]

been there...
If yer want a 4 cyclinder to put out the low end punch of a Vee

cut the cams in half turn them 180* and weld back togeather
put the plug leads to 1 & 3 off one coil / 2 & 4 of the other..
the motor will run as a twin.. fireing on 2 cyclinders at the same time.

DON"T try to pull the same red line as it did .. drop 2000 rpm off the red line..

I done it to a GSX750 for a TQ midget...

Gavin Sendal / Craig Webby won the NZ speedway side chair champs with a GSXR1100
running as a twin..

oked into doing this with a Yamaha xs1100 motor,
But by getting new cams made, not cutting the ome ones,
seeing as its the cams that control everything up top,
And the xs1100 fires on every stroke like most bikes
The only problem I could see, was there is no fly wheel to allow the motor to run over the dead cycles evenly
Thought that it would vibrate far too much for it to be worth while.'
but seeing you have done it to a GSXR1100,
how did you deal with the no flywheel problem
Or were the counter balance weights on the crank sufficient
to even out the pulse and not let the thing shake itself to bits.

[ducatilover]

Both the Gixxer and XS have a flywheel, you'll probably find it on the crank spinning around a set of stator windings laden with nice heavy magnets

[Drew]

Because the motor is already balanced for the crank and you're not changing it, the vibration will be no more severe than it is already.

But, I ask why it is you want to do this?

The gains to be had from a cross plane crank are in the longer dead pulse, giving your tyre time to recover. The torque figure is no more impressive, nor is the power. All you're doing is making your bike sound like it's got a serious miss.