Will transverse engine mounting counteract wheelstand in a hi-power bike or dragster?
Will transverse engine mounting counteract wheelstand in a hi-power bike or dragster?
(OP)
For a transverse engine, rear wheel drive bike or dragster.
A revving-up engine engine creates "counter-torque". Not sure if there's a technical name for it.
But it is the torque the engine exerts on its MOUNTS opposing the direction of rotation.
It can clearly be seen while revving-up the engine with the hood open in a car with worn mounts.
It can also be seen on how Top Fuel dragsters load one rear wheel more than the other during launch, usually also leaning to that side.
Will this counter-torque reduce or eliminate wheelstand?
Of course engine must be mounted so that its rotation direction lowers the car nose.
A revving-up engine engine creates "counter-torque". Not sure if there's a technical name for it.
But it is the torque the engine exerts on its MOUNTS opposing the direction of rotation.
It can clearly be seen while revving-up the engine with the hood open in a car with worn mounts.
It can also be seen on how Top Fuel dragsters load one rear wheel more than the other during launch, usually also leaning to that side.
Will this counter-torque reduce or eliminate wheelstand?
Of course engine must be mounted so that its rotation direction lowers the car nose.





RE: Will transverse engine mounting counteract wheelstand in a hi-power bike or dragster?
Some reasonable (and some unreasonable as well) points and pictures here.
http://www.jalopyjournal.com/forum/showthread.php?...
RE: Will transverse engine mounting counteract wheelstand in a hi-power bike or dragster?
Cheers
Greg Locock
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RE: Will transverse engine mounting counteract wheelstand in a hi-power bike or dragster?
RE: Will transverse engine mounting counteract wheelstand in a hi-power bike or dragster?
"John Force’s first funny car was a major flop. Not only was "The Night Stalker" a rear engined car, but the engine was mounted sideways. John and Louie Force purchased the Mustang from Jack Chrisman. Chrisman had built the car but never raced it. The car’s weak point was the chain drive. Irwindale starter Larry Sutton was so tired of being hit with chain links, he had John banned from the track. The car had a SOHC 427 Ford to begin with, but a Chrysler Hemi took its place."
RE: Will transverse engine mounting counteract wheelstand in a hi-power bike or dragster?
RE: Will transverse engine mounting counteract wheelstand in a hi-power bike or dragster?
The above was done in the Corvette starting with the C5 in '97 by using a torque tube to solidly connect the front engine to the rear mounted transmission and differential and also running a LSA IRS. The drive train in these Corvettes lifts the front end straight up when accelerating. C5 and C6 Corvettes stay level and straight when drag racing, even when running 800+ HP and 8's in the quarter.
A similar net result is achieved in Top Fuel and Funny cars. The engine and differential are both solidly mounted in a very rigid frame section and there is no suspension. You may see the chassis flexing on these cars, but the section mounting the engine and diff is not.
RE: Will transverse engine mounting counteract wheelstand in a hi-power bike or dragster?
RE: Will transverse engine mounting counteract wheelstand in a hi-power bike or dragster?
http://www.horsepowermonster.com/wp-content/upload...
red trace is engine rpm. Max engine in rpm in less than 1/4 second.
RE: Will transverse engine mounting counteract wheelstand in a hi-power bike or dragster?
RE: Will transverse engine mounting counteract wheelstand in a hi-power bike or dragster?
Norm
RE: Will transverse engine mounting counteract wheelstand in a hi-power bike or dragster?
The force caused by accelerating a few pounds of rotating mass in the engine won't counter the 1000's of ft-lbs of torque at the axle shaft that is trying to rotate the front of the vehicle into the air.