The last set of loads that the axle housing experiences comes from the reaction of the propshaft rotation against the wheels on the pavement through the axle gearing. As mentioned earlier, the propshaft is rotating in a counter-clockwise direction when viewed from the rear of the vehicle. This...
quote from Smokey on a standard rotation torque
Torque reaction also lifts the right end of the rear live axle and pushes down on the left, with the axle housing forming a sort of lever. On a typical car developing oh, 300 lb-ft of crankshaft torque, there might be 75-120 lbs. of force loading...
Ranger mike thank you for your patients I misunderstood what i was reading about lifting the rear under power
Quote from Smokey
The idea of reverse rotation is, when you accelerate hard the weight comes to the left front and left rear, and pulls weight off of the right front. This more evenly...
quote from Smokey
And note that reversing the engine’s rotation does not cancel the reaction forces in any event. It simply reverses them. And in the case of the forces acting on the axle housing, it’s in the wrong direction for oval racing.
So your not concerned about the torque is reverse and...
Thanks for your reply one of my concerns is the lift of the left rear tyre under power.
Going off the Steve Smith book calculating the 3rd link mount location is based on your left side percentage weight to load the tyres evenly i.e. centre of the mass of the car, in my case I'm wondering if...
Ranger mike I am not sure if you think I'm wasting your time here? I have already got the reverse rotation crown wheel and pinion rear done and also the reverse rotation of the drive shaft.
How would you set up the suspension if this race car was in your shop?
Im here asking for advice because...
Ok what would be the suspension advantage of it?
I’ve read and understand what you’re saying about the engine but if the race car was in your hands how would you design and set up the suspension ?
I have chosen Double A arm front 3 link rear because it’s a simple design
Actually our...
Please bear with me as i try to explain my question reverse rotation of the drive shaft and using reverse rotation crown wheel and pinion to correct it so the car drives forward normally.
Now this is a purpose built race car to run a dirt oval with double A arm suspension and 3 link rear coil...
Excellent!
Thats it i didn't take into consideration the positive camber and my reduced KAI will reduce the left side scrub Radius
Starting to understand this Thanks again
What affect will it have running 2" less scrub radius on the front left compared to the right front?
I have been researching this and my understanding left scrub wedges the right rear on turn in and tightens up the car.
I have seen a lot of cars running a 2" spacer on the right front and and...
thanks again Mike that's clearer now as i had read that earlier on and now can understand it better.
Is there away to private message you with some brief details on my build or detailed details I'm sure it will be easier for you to advise on what's best suited to my needs. Thanks again for your time
How do I determine the ideal scrub radius for a race car running 1/4 mile dirt oval , double A arm front suspension, 9 1/4”wide radial tyres, power steering and 3 link rear, 95.5” wheel base” 61” wheel track. I’m currently in the designing stage. Thanks