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Old 02-10-2012, 01:29 PM   #1
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Default Schumacher MI4CX

what you guys think?
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Old 02-10-2012, 01:33 PM   #2
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performance?
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Old 02-10-2012, 01:56 PM   #3
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http://www.rctech.net/forum/electric...acher-mi4.html
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Old 02-10-2012, 02:00 PM   #4
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new to the forum, really like to post some pix of my project but it wont allow me yet. asking for more post...
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Old 02-10-2012, 02:00 PM   #5
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by the way how many post before they allow you to post links?
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Old 02-10-2012, 10:30 PM   #6
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BTW use the MI4 thread as linked above!!
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Old 09-17-2012, 04:14 PM   #7
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Cool Schumacher Mi4-CX

Scrolled to the top!

Last edited by HollywoodRC; 09-18-2012 at 12:26 AM.
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Old 09-17-2012, 04:36 PM   #8
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Quote:
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Quote:
Originally Posted by kid TT-01 View Post
BTW use the MI4 thread as linked above!!
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Just finished painting my new Shumacher Mi4. Running in GT10 class.
Nice-lookin' body. Now try scrolling up.

-Mike
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Old 09-18-2012, 10:38 PM   #9
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Cool Mi4CX

I just bought a Schumacher Mi4CX and raced it for the first time this passed weekend. Did pretty well except you couldn't turn without the rear end coming around to save your life. Ok, did some digging and found that the rear diff was almost a spool. So, I took the ball diff apart and found that the washers around the thrust bearings were almost flat. Do they make a Mi4 rebuild kit or are most people running gear diffs?
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Old 09-18-2012, 11:44 PM   #10
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Amainhobbies.com should have the diff parts. But honestly, I'd just the gear diff and never look back. If you order from www.spec-r.com or www.hkshobby.com, you'll save a bit of money, but it won't come with the slider inserts and rings. You can just use the ones you have. Also, be sure to get extra .1mm shims (don't have the part number handy), because you need to shim the outdrive on the outside of the diff case to remove play. This makes a huge difference in leakage.

-Mike
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Old 09-19-2012, 12:29 AM   #11
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Amainhobbies.com should have the diff parts. But honestly, I'd just the gear diff and never look back. If you order from www.spec-r.com or www.hkshobby.com, you'll save a bit of money, but it won't come with the slider inserts and rings. You can just use the ones you have. Also, be sure to get extra .1mm shims (don't have the part number handy), because you need to shim the outdrive on the outside of the diff case to remove play. This makes a huge difference in leakage.

-Mike
Thanks Mike. Schumacher has some interesting ways to build a ball diff. I did manage to fix it and she runs fine for now. I am going to get a gear diff soon. I read some people are using 70wt oil in them. Is this true. I was thinking 2000wt gear lube was the way to go. This is my first on road car, I came from the dirt, lots to learn.

Last edited by HollywoodRC; 09-19-2012 at 03:23 PM.
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Old 09-19-2012, 12:48 AM   #12
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70 associated is around 800 cst, which is fine to start. Heaver will tame the car on entry with slower rotation through the corner, and more corner exit steering. I've got 80wt in mine, and it seems good for carpet. On asphalt I was gonna go heaver but ran out of races.

-Mike
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Old 09-19-2012, 12:02 PM   #13
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Originally Posted by grippgoat View Post
70 associated is around 800 cst, which is fine to start. Heaver will tame the car on entry with slower rotation through the corner, and more corner exit steering. I've got 80wt in mine, and it seems good for carpet. On asphalt I was gonna go heaver but ran out of races.

-Mike
FYI 70W Assoc is 960cst and 80W is 1040. This will help.

http://www.petitrc.com/reglages/OilChart.pdf
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Old 09-20-2012, 01:19 AM   #14
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Cool Shims for gear diff

Mike the part number for the shims is U2761. Amain has them in stock, thank god! They also have the cone washers for the ball diff (U2573) that I picked up. I decided to leave the ball diff in for now, but have a gear diff on order. I think you are right the gear diff sounds a lot more stable!
Cheers
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Old 09-20-2012, 01:54 AM   #15
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Originally Posted by grippgoat View Post
70 associated is around 800 cst, which is fine to start. Heaver will tame the car on entry with slower rotation through the corner, and more corner exit steering. I've got 80wt in mine, and it seems good for carpet. On asphalt I was gonna go heaver but ran out of races.

-Mike
the lowest Ive tried is 800, good rotation but pushes a little on power. 1300 is the most I tried on sprayed asphalt, Very stable and good on power steering. When I tried 2000 oil handling was very bad ie. very loose on power.
This is with a TCX.

rule of thumb, higher the traction heavier the oil and vice versa. Its all about finding out what works for you.
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