depends on the class and car. Top fuel is a direct drive with only a clutch. They are to fast and powerful for a human to shift and keep the tires. The lenco has been around for a long time. at least the 70s.xxChrisxx wrote:Interesting little set up that.
Are all drag cars manuals? I thought they had a viscous clutch/ torque converter set to hook up at just right point for peak acceleration.
I can't see that this answers my question. To be honest I don't see the sense in trying to sell a design if you cannot show the potential benefits in numbers. Until there are numbers that show a worthwhile benefit in the things that matter (laptime, saved weight, saved fuel, lower manufacturing cost - any/all of these etc.) it doesn't matter a tiny bit how it works or even whether it works.autogyro wrote:I will just say that in direct top gear seventh, my seven speed stepped gearbox is supported at one end by the crank shaft which is driving that one shaft. Non of the gearsets in the gearbox are moving relative to one another, non of them are creating oil drag and the output is supported on one bearing. This is as good as damit the most efficient transfer of torque from the engine to the gearbox output yet available.
It is possible to use an electric motor on a vehicle with a 'one' speed gearbox.flynfrog wrote:A wise man once said the only reason we have a transmission is because we haven't built a good enough engine.
With an electric motor its possible to not use any transmission
Very true but of course but there is little problem in defining a mind set for someone who has no idea how the system works and yet states that there are thousand more clever than me, without any idea of my abilities.xxChrisxx wrote:But that would totally give the game away wouldnt it. It's easy to plug hopes and aspirations, a bit more difficult when you are nailed down to specifics.F1_eng wrote: These are standard simple questions which you won't answer. They won't give any big secrets away about your "design."
Or in a separate case, tell me about the casing and how it houses the gears. I find the size of the unit you describe and the magnitude of the forces I know about impossible.
Its a load of crap, I give-up after this unless you give more info.
Sell the idea to someone, there are thousands of us 10x smarter than you with the best equipment in the world and it's still very very difficult to make significant developments.
last I checked top fuel has been improved by getting rid of the gears. There is no reason for a gearbox on an adjustable timing electric motor. with a wheel hub motor you eliminate any sort of transmission.autogyro wrote:It is possible to use an electric motor on a vehicle with a 'one' speed gearbox.flynfrog wrote:A wise man once said the only reason we have a transmission is because we haven't built a good enough engine.
With an electric motor its possible to not use any transmission
There still has to be an rpm drop, so there is a transmission as always. Ok it is also possible to use direct shaft drive but even then there has to be allowance for suspension/steering and in any case the motor will still probably have to be ratio matched. Unsprung weight is also a major factor.
However, the motor can be made more efficient by using a variation in output rpm.
The Tesla was designed with a three speed gearbox and this has been kept out of the huge marketing hype, because they could only get it to last 2000 miles. It now has a one speed gearbox.
The comparison between a one speed electric vehicle and a one speed dragster is useful as both can be much improved using a transmission, there is of course proof of this in the dragster development over the years.
So yes but no coconut.
Fuel Dragsters and funny cars have improved using tires developed to provide a constantly variable ratio through an increase in diameter when torque is applied.flynfrog wrote:last I checked top fuel has been improved by getting rid of the gears. There is no reason for a gearbox on an adjustable timing electric motor. with a wheel hub motor you eliminate any sort of transmission.autogyro wrote:It is possible to use an electric motor on a vehicle with a 'one' speed gearbox.flynfrog wrote:A wise man once said the only reason we have a transmission is because we haven't built a good enough engine.
With an electric motor its possible to not use any transmission
There still has to be an rpm drop, so there is a transmission as always. Ok it is also possible to use direct shaft drive but even then there has to be allowance for suspension/steering and in any case the motor will still probably have to be ratio matched. Unsprung weight is also a major factor.
However, the motor can be made more efficient by using a variation in output rpm.
The Tesla was designed with a three speed gearbox and this has been kept out of the huge marketing hype, because they could only get it to last 2000 miles. It now has a one speed gearbox.
The comparison between a one speed electric vehicle and a one speed dragster is useful as both can be much improved using a transmission, there is of course proof of this in the dragster development over the years.
So yes but no coconut.
I thought 'failed to answer the question' was simply 'failed to answer the question', not a quantative statement.xxChrisxx wrote:Failed to answer the question 4 times now.
Yes indeed. The sky is blue. Except now its gone dark.autogyro wrote:I thought 'failed to answer the question' was simply 'failed to answer the question', not a quantative statement.xxChrisxx wrote:Failed to answer the question 4 times now.
I have done exactly this. Can I start a thread about it?you may as well have just drawn a crude sketch on the back of a peice of bog roll.
Only if the paper wasn't 'used' after the sketch. In the case of this thread, I think it was.bazanaius wrote:I have done exactly this. Can I start a thread about it?you may as well have just drawn a crude sketch on the back of a peice of bog roll.
