2LikesXray T4 '13
05-14-2013, 12:42 PM
#3601
Tech Rookie
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
I ordered 2000 and 3000cst, i just drive with A spool - solid diff(original)
Last edited by HudyPat; 05-14-2013 at 02:57 PM.
05-14-2013, 03:59 PM
#3602
Tech Apprentice
Hi. Does anyone know where I can get my hands on 2.5million diff oil in the U.K? I currently use 1million and am interested to see what 2.5 will do.
05-14-2013, 06:11 PM
#3603
Tech Apprentice
I run asphalt.
05-14-2013, 08:28 PM
#3605
05-14-2013, 08:29 PM
#3606
05-14-2013, 08:44 PM
#3607
http://www.superiorhobbies.com/store...2C500%2C000cst
05-14-2013, 09:22 PM
#3608
I believe it's 6 up front and 5 in the rear on the blocks, it would be different if you measure above ride height ( I think )
05-14-2013, 09:38 PM
#3609
are you referring to page 31 in the manual? I'd so isn't that just a blank setup sheet? Shows both on 5 for display proposes. Maybe I'm missing something?
I've downloaded the manual off of X rays site and the first few pages are just text.
I did find where it shows the distance between the bottom of the arm and he top of the gdroop screw. 2.2 millimeters in front and 2 millimeters in back.
Do you guys really measure that way?
Thanks
Dave
I've downloaded the manual off of X rays site and the first few pages are just text.
I did find where it shows the distance between the bottom of the arm and he top of the gdroop screw. 2.2 millimeters in front and 2 millimeters in back.
Do you guys really measure that way?
Thanks
Dave
05-14-2013, 09:51 PM
#3610
are you referring to page 31 in the manual? I'd so isn't that just a blank setup sheet? Shows both on 5 for display proposes. Maybe I'm missing something?
I've downloaded the manual off of X rays site and the first few pages are just text.
I did find where it shows the distance between the bottom of the arm and he top of the gdroop screw. 2.2 millimeters in front and 2 millimeters in back.
Do you guys really measure that way?
Thanks
Dave
I've downloaded the manual off of X rays site and the first few pages are just text.
I did find where it shows the distance between the bottom of the arm and he top of the gdroop screw. 2.2 millimeters in front and 2 millimeters in back.
Do you guys really measure that way?
Thanks
Dave
05-15-2013, 02:27 AM
#3611
Tech Apprentice
are you referring to page 31 in the manual? I'd so isn't that just a blank setup sheet? Shows both on 5 for display proposes. Maybe I'm missing something?
I've downloaded the manual off of X rays site and the first few pages are just text.
I did find where it shows the distance between the bottom of the arm and he top of the gdroop screw. 2.2 millimeters in front and 2 millimeters in back.
Do you guys really measure that way?
Thanks
Dave
I've downloaded the manual off of X rays site and the first few pages are just text.
I did find where it shows the distance between the bottom of the arm and he top of the gdroop screw. 2.2 millimeters in front and 2 millimeters in back.
Do you guys really measure that way?
Thanks
Dave
05-15-2013, 05:10 AM
#3613
05-15-2013, 07:43 AM
#3614
My guess is when hitting a bump the front wheel tend to go to the right or left and the driver has to correct it or hit a wall. I can be totally wrong, I'm just assuming from what it's called
05-15-2013, 07:57 AM
#3615
Bump-steer is generally undesirable as it makes the car unstable over bumps. However by adding bump-steer we also get roll-steer, which can be desirable as it increases steering through the corner. The harder you drive the car, the more steering you get. On the T4 adding spacers between the steering link and the hub increases roll-steer (or bump-steer if you prefer). This gives more steering, especially mid-corner where maximum roll is achieved.