Quote:
Originally Posted by rcjunky
The opposite, 3 gear mid motor is for more steering when you already have enough rear grip, so high grip situations.
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I think
arransmith27 had it right - having a 3 geared box and external idler gear should be better on lower grip services which has always been my understanding... and today'a racing has definitely confirmed that.
I went over to Coventry astro track yesterday for a bit of practice / testing with my usual 3 geared box and external idler gear... was well until I reallised that the motor plate I was using had lost all its threads were the gearbox bolts to it and so the motor plate was only being held in place by the slipper assembly.
I was due to race at Silverstone indoor offroad meeting today so last night I tried to fix it - however the only other motor plate I had did not have the hole drilled for the external idler gear so I thought I'd give the 4 geared box another try and leave the external idler gear off.
Got there, felt so so in practice... but horrendous through qualifying. At first I thought it was my tires but after putting brand new tyres on and the car still feeling pants, I decided it must be the gearbox. I managed to 'bodge' the 3 geared box back on the car using the fixing for the idler gear as one of the motor screws - not ideal as I could only use a 20 tooth pinion but ran it in the final qualifying (with extra timing/boost speedo settings to componsate for the smaller pinion) and it was SOOOOOOO much better. Not necassarily faster on a 'one lapper' but so much more stable and easier to drive the full race with little or no errors.
Put it 4th in the B final (only running an 8 car A final so 12th overall) and won the B final with no drama's or errors at all.
I should also add that the track was indoor but on propper astro and very loose dirt - astro was very high grip and the loose dirt was oober slippery which was where the time was one or lost.
I know this is a long winded post but for me its the 3 geared box all the way
