Xray T4 '13
#3572
Tech Rookie
#3574
Tech Rookie
The one that followed is "700cst" but than i should order some other oils for the gear diff
Front/rear
Front/rear
#3577
Tech Rookie
#3579
Paul Lemieux's company Gravity makes it. The big US stores carry it.
#3581
If you want to use a gear diff in the front you need to run MUCH thicker oil than the rear. Some use 500,000
I have a gear diff with 2.5million in it which only allows the diff to move but only very slowly and it takes a lot of effort.
If you do want to run a diff I suggest putting 1million or 2.5 million in and comparing it with a spool to see which you prefer.
I have only run my 2.5million diff once on asphalt, it made the car very stable but I need to do more back to back testing to see if it was actually quicker.
On a tight carpet track (which everyone seems to think is better with a gear diff in the front) I was quicker with a spool, the front gear diff made the car too safe.
I run 2000cSt in the rear
Skiddins
#3584
Tech Apprentice
What are those battery backstops?
Is it Alex car? Pic taken when?
Springs look long, strange if X-ray would go back to long dampers again..
What will the added cylindrical "blocks" between the holders for the anti roll bar do?
What is the reason for the screw set-up in the top deck? I normally remove the ones from the bulkhead in the middle at the spur gear, all 4 of them but leaves the rest. Will this be some kind of "middle" flex setting compared to that and keeping all the screws?
Is it Alex car? Pic taken when?
Springs look long, strange if X-ray would go back to long dampers again..
What will the added cylindrical "blocks" between the holders for the anti roll bar do?
What is the reason for the screw set-up in the top deck? I normally remove the ones from the bulkhead in the middle at the spur gear, all 4 of them but leaves the rest. Will this be some kind of "middle" flex setting compared to that and keeping all the screws?
Last edited by martinskarin; 05-13-2013 at 06:24 PM.
#3585
Tech Apprentice
The kit oil (700cSt) is only for a rear gear diff. A spool (solid 'diff') is used in the front.
If you want to use a gear diff in the front you need to run MUCH thicker oil than the rear. Some use 500,000
I have a gear diff with 2.5million in it which only allows the diff to move but only very slowly and it takes a lot of effort.
If you do want to run a diff I suggest putting 1million or 2.5 million in and comparing it with a spool to see which you prefer.
I have only run my 2.5million diff once on asphalt, it made the car very stable but I need to do more back to back testing to see if it was actually quicker.
On a tight carpet track (which everyone seems to think is better with a gear diff in the front) I was quicker with a spool, the front gear diff made the car too safe.
I run 2000cSt in the rear
Skiddins
If you want to use a gear diff in the front you need to run MUCH thicker oil than the rear. Some use 500,000
I have a gear diff with 2.5million in it which only allows the diff to move but only very slowly and it takes a lot of effort.
If you do want to run a diff I suggest putting 1million or 2.5 million in and comparing it with a spool to see which you prefer.
I have only run my 2.5million diff once on asphalt, it made the car very stable but I need to do more back to back testing to see if it was actually quicker.
On a tight carpet track (which everyone seems to think is better with a gear diff in the front) I was quicker with a spool, the front gear diff made the car too safe.
I run 2000cSt in the rear
Skiddins
Last race we had was a very tight track but some guys still used spools in front with success, however their cars seemed to be pretty hard to run consistent with so I never tried it since I knew I would also have to make several other changes to the set-up and did not really have the time to test it out.
I use 1000 - 3000 in the rear depending on track and grip conditions.