help needed with early ratio's

[atomman]

hello there
some help needed please

Got a friend that wants to change the ratio's in his 1960 race car its got a split case beelte gearbox

have done some searching about and found that maybe early porsche ratios will fit ? any idea's guy's?

heres his other car at work on the dyno doing power runs today
its a 1960 sauter with RSK runiing gear doing about 120


cheers in advance

Gary
__________________

[Mike Smith]

Nice to see the Single Seater Sauter again - it used to be in Switzerland and somwhere I have some photos of, which I will happily pass on

We also used to own a Sauter / Porsche with 1500 4-Cam in it - great fun but needed work to make it competative

I also spent some time with Mr Sauter so have a little knowledge of what he got up to - again happy to pass it on

It seems to me that the easy way out of your friends problem is to fit a Porsche Gearbox - this opens you up to a whole range of ratios

We do have a Computerised Gear Calculation Chart - feed in any Tyre Size - any Final Ratio - Any Gear plus the revs and it will draw the graph for you

We currently have 17 Gearboxes in stock plus a selection of some obsure gears - so we may be able to help you out in this direction also

Ring me if you think we can help 07718 660 499

Mike at PR

[atomman]

hello Mike cheers for your reply

the car that needs the ratio's changing is a 60 essenkay with a skoda engine and a split case early beetle box and dont think it can be changed as it race's in formula junior and needs to be OG, i think this means the box to,


this Sauter runs a DDK 2 stroke as the rRSK was bought for the engine for a formula 1 car and the rest of the bits went to building this car,
you would'nt belive the sound of it on the dyno yesterday

anyways cheers for you help and will pass you number on to Tim the guy with the cars

gary

[Mike Smith]

I am not familiar with the 60 Essenkay so really cannot say a lot

Assuming it is possible and allowable to change to a 356 Box - the following gears are available for Type 741 Boxes

If it is not allowable then it may be possible with some good engineering to squeese in a Pair of Porsche Shafts and Gears

The only other option is to see what VW Gears are availalble (not many from what I remember) and then fill any holes in the acceleration graph by having what is needed manufactured - anything is possible - its only money

The first thing is to decide what the car is needed for
Does 1st gear suit what is required
How fast do you need to go in 4th (or 5th)
and then fill in the middle with decreasing RPM drops and still keeping the drops within the power curve

Maybe also you can juggle with Final Drive ratios and also Wheel / Tyre Sizes

1B 11 : 34 3.090909091
1C 12 : 33 2.75
PR Special 13 : 33 2.538461538

2C 15 : 32 2.133333333
2A 16 : 31 1.9375
2B 17 : 30 1.764705882
2E 16 : 27 1.6875
PR Special 19 : 32 1.684210526
2D & 3F 18 : 29 1.611111111

3D 19 : 28 1.473684211
3E 20 : 27 1.35
3A 22 : 27 1.227272727
3B 23 ; 26 1.130434783
3C 24 : 25 1.041666667

4E 24 : 24 1
4F 26 : 24 0.923076923
4A 25 : 24 0.96
4B 26 : 23 0.884615385
4D 27 : 23 0.851851852
4C 27 : 22 0.814814815
4TG 28 : 21 0.75

Mike at PR