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Old 06-03-2010, 10:17 PM   #46
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Just recieved my diff for T2/T3.
Immediately replaced the rubber orings for silicone ones.
Built with 1k oil and used with 6.5t mod.
Seems to be working really well.
Only run 4-5 runs so far but everthing still feels OK.
It leaked the first time I installed it (around the gasket) so I used a small bit of gasket sealer to help.
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Old 06-04-2010, 12:04 AM   #47
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gear diffs will leak a bit after its built especially if you filled a bit too much.
After a few runs just nick the screws a bit tighter and it should stop leaking.
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Old 06-04-2010, 12:49 AM   #48
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Quote:
Originally Posted by Luppi Stefano View Post
nt1 front Gear diff has 34T...oh not?
use Cyclone pulley !
& XRAY NT1 Gear diff. can suport long life with you ,
in GP Car no problem on EP car same !

because had other co. made composite gear for NT1 ,
or smaller size gear will short life .
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Old 06-04-2010, 05:01 AM   #49
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Originally Posted by RC MARKET View Post
use Cyclone pulley !
& XRAY NT1 Gear diff. can suport long life with you ,
in GP Car no problem on EP car same !

because had other co. made composite gear for NT1 ,
or smaller size gear will short life .
I look NT1 front differential...
all clear, you only need to change and modified the pulley...
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Old 06-04-2010, 08:08 AM   #50
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Originally Posted by razzor View Post
gear diffs will leak a bit after its built especially if you filled a bit too much.
After a few runs just nick the screws a bit tighter and it should stop leaking.
That's what I was going to do. I figured it was better to slightly overfill the diff and push some oil out during assembly rather than underfill it.
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Old 06-04-2010, 04:40 PM   #51
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this is my Cyclone gear diff used around 30 momths.
used NT1 front gear diff to MOD.

Ok guys i know that you need the NT1 gear diff, but what other parts do i need for it to fit in the T3?
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Old 06-05-2010, 12:19 AM   #52
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check T3 topic
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Old 06-06-2010, 12:04 AM   #53
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I ran the Spec-R gear diff in the rear of my T3 with the atomic 50 mm ecs today. Car ran great all day. I had a little small leakage around the pulley the first run, but I didn't notice any after that (actually, I noticed the oil on the shock tower, and didn't see any on the pulley). This was on a tight low grip carpet layout with a 17.5/tekin with turbo set up. After about 4 packs or about 50 minutes of run time the diff still works and feels great. Very happy. I am running XRay 650 cst in it and I doubled up on the gaskets. I figure between 600 and 1000 XRay cst is the range of oils we'll use. Maybe 1500-2000 if used in front as a semi-locked diff/spool. I sanded the bevel gears with 1000 grit to make sure everything was smooth. Yay for maintenance free diffs!!

AWD
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Old 06-06-2010, 06:03 AM   #54
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Originally Posted by andrewdoherty View Post
I ran the Spec-R gear diff in the rear of my T3 with the atomic 50 mm ecs today. Car ran great all day. I had a little small leakage around the pulley the first run, but I didn't notice any after that (actually, I noticed the oil on the shock tower, and didn't see any on the pulley). This was on a tight low grip carpet layout with a 17.5/tekin with turbo set up. After about 4 packs or about 50 minutes of run time the diff still works and feels great. Very happy. I am running XRay 650 cst in it and I doubled up on the gaskets. I figure between 600 and 1000 XRay cst is the range of oils we'll use. Maybe 1500-2000 if used in front as a semi-locked diff/spool. I sanded the bevel gears with 1000 grit to make sure everything was smooth. Yay for maintenance free diffs!!

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Was it any faster?
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Old 06-06-2010, 06:42 AM   #55
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Default Spec-R diff, so far so good in my 09 X-Ray running 13.5 on carpet

Just my thoughts on Spec-R diff, so far so good in my 09 X-Ray running 13.5 on carpet. Sanded back of bevel gears just to take moulding marks off so ran smooth, Green slime on main out put drives O-rings so helps stop leakage and on gasket to help seal ( didn’t put two gaskets on because could make satellite gears run with too much play against Bevel gears and strip). Having built real car diff’s couldn’t under stand why you would want to over fill diff, a normal car diff with a breather is only filled half way which I did with Spec-R diff. It’s sealed so any over fill will just push out of gasket or out drives when it warms up. You need air space in side so it can expand. It won’t run dry because diff gears rotate and pick up oil. I used much more 250 oil and only filled just over half way so there was air space for expansion when run. So far the only fault I can see is the washer No 9 which runs behind No 4 Bevel Gear, its really thin (0.1) and 9mm wide, could distort. Might use a thicker and wider one, Tamiya wheel spacer 0.5 x 11.5 wide would fit and make better seal on O-ring seal. If you do, don’t just file back of No 4 Bevel gears because No 8 pin will pull out drives in so you need to file out side of the case 1 & 2 were the out drives go in to case so it can run free, (don’t over do it).
It’s about 9/11 grams heavier with oil.
Is it faster? I think that’s down to how you like to drive and if you like a non slip diff. for me just a club racer, its really smooth, no slip, (so far) one less thing to worry about and its cheaper than a new X-Ray diff in the UK !
Hope this helps
Just order another one for my T3 running 10.5
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Last edited by bodymot; 06-06-2010 at 07:23 AM.
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Old 06-06-2010, 07:22 AM   #56
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Quote:
Originally Posted by bodymot View Post
Just my thoughts on Spec-R diff, so far so good in my 09 X-Ray running 13.5 on carpet. Sanded back of bevel gears just to take moulding marks off so ran smooth, Green slime on main out put drives O-rings so helps stop leakage and on gasket to help seal ( didn’t put two gaskets on because could make satellite gears run with too much play against Bevel gears and strip). Having built real car diff’s couldn’t under stand why you would want to over fill diff, a normal car diff with a breather is only filled half way which I did with Spec-R diff. It’s sealed so any over fill will just push out of gasket or out drives when it warms up. You need air space in side so it can expand. It won’t run dry because diff gears rotate and pick up oil. I used much more 250 oil and only filled just over half way so there was air space for expansion when run. So far the only fault I can see is the washer No 9 which runs behind No 4 Bevel Gear, its really thin (0.1) and could distort. Might use a thicker one, if you do don’t just file back of No 4 Bevel gear because No 8 pin stops it moving in so you need to file out side of the case 1 & 2 so it can run free, (don’t over do it).
It’s about 9/11 grams heavier with oil.
Is it faster? I think that’s down to how you like to drive and if you like a non slip diff. for me just a club racer, its really smooth, no slip, (so far) one less thing to worry about and its cheaper than a new X-Ray diff in the UK !
Hope this helps
Just order another one for my T3 running 10.5
A few guys ran them here today in 10.5 and mod. Im really impressed with them. They were using Muchmore 500 oil. I drove the mod car and i could definatly feel that the car was much more consistant coming out of a corner compared to a ball diff, and the car didnt do anything silly thats a normal diff can sometimes produce when under load. I think the benifits of this diff will be more noticipble on asphalt (what we are running on).

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Old 06-06-2010, 09:02 AM   #57
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A few guys ran them here today in 10.5 and mod. Im really impressed with them. They were using Muchmore 500 oil. I drove the mod car and i could definatly feel that the car was much more consistant coming out of a corner compared to a ball diff, and the car didnt do anything silly thats a normal diff can sometimes produce when under load. I think the benifits of this diff will be more noticipble on asphalt (what we are running on).
Antoni
Really good to hear it can cope with Mod racing which can put a lot more strain on the drive train. It should cope with 13.5 & 10.5 on carpet. So far I prefer it to a ball diff.
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Old 06-06-2010, 05:37 PM   #58
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Did about 6 more runs on my car today. The leakage went away - it was just the initials run where some excess from the inside came out. After that it's be good. I also noticed a little oil on my shock tower.
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Old 06-06-2010, 06:27 PM   #59
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I ran the 416 version today, crazy forward bite, and it did help the car rotate more. I ran Integy 150wt oil (kind of odd, but I use it for gear diffs in my dirt oval car too). It did have some leakage around the pulley.
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Old 06-06-2010, 07:22 PM   #60
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I wish there was one for the Hotbodies car
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