Help with gearing please...

james_xray · #1 08-01-2012

Hi all,

i have a dex410 r with all the standard gear ratios 87 spur etc, however i am really struggling to get the motor to not cook itself/overheating and cutting out.

I completely understand it is something i am doing wrong so would like pointing in the right direction.

the track sizes/types i race at are worksop and broxtowe and will be racing at coventry in a fortnight.

I am currently running an LRP 6.5 X12 VECTOR

and i also have a LRP 5.5 X12 OCTA as a spare,

can anyone with experience of using these motors please advise me on pinons to use for small tight tracks, open and then outdoor etc.

i am using a sxx tc spec with the v3 software.

advice is greatly appreciated, got the car going well (with help from durango guys at worksop) just struggling with motor overheating.

many thanks

jayst · #2 08-01-2012

think i use 21t at coventry and same at broxtowe with a x12 6.5 with the same esc . punch on 2 , drag on 1

Big G · #3 09-01-2012

I was advised by HarlowS to run a 23 with my 6.5 motor for Cov. I still seemed to lack pace down the straight, but the motor was fine at the end.

kartstuffer · #4 10-01-2012

Hi
I run a 6.5 with 24 pinion on a high grip with LRP tc speedo but make sure you don`t run any drag brake and run 1 1 1 1 with no cooling problems.

steveproracing · #5 10-01-2012

I run x12 6.5 with an sxx. Non tc version

I run as advised in Lrps manual

I gear at 10:1
On the dex410 this is 19/87

I also run lowest timing on motor
I also run speedo 1,1,0,0.
My motor stays cool
My speedo stays cold

These are the setting given to me by one of Lrps top international drivers!!

AmiSMB · #6 10-01-2012

Hi James I do not run LRP but use a Speed Passion V3 6.5 and was running a 23T pinion to a 87T spur on a medium track at the weekend with no issues. I have also ran a 5.5 on a 22T pinion without any overheat problems. I run a HW 120A with the latest software and have left the turbo on and it works fine. I would suggest that you go over the whole car and make sure there is no friction. I have found that the gear boxes do not hold the pinion gear bearing very tight and it can wobble around and cause alot of friction which you can feel as heat on the output drives of the front and rear gearboxes. I also found that my battery strap bulkhead was touching the slipper nut and getting very hot and this helped get to where I am now running nice and cool.

HTH

thorny97 · #7 10-01-2012

Or Buy a schumacher - we have no problems!! LOL

sime46 · #8 10-01-2012

Quote:

Originally Posted by thorny97

Or Buy a schumacher - we have no problems!! LOL

??????????????

HarlowS · #9 10-01-2012

I run a 23t with Tekin speedo and 6.5 motor, timing advance at 75/80 and never had any issues with heat, ran with a 24 too but always felt like it was soft after 4 mins or so.