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View Full Version : Mr-01 diff in a Mr-02?


yzfr191
2007.04.17, 05:25 PM
Hi, I was ondering if it was possible to put a ball diff for an Mr-01 in a Mr-02 without much problem. Will i have to mod the motor pod somehow? Thanks

arch2b
2007.04.17, 05:29 PM
the differednces have to do with lenght of shaft and centering. the shaft is the same diameter. this also plays with the offset for wheels.

yzfr191
2007.04.17, 05:43 PM
Oh, i see. Thanks for the reply. Will I still be able to use it or will the shaft be too short/long for me to use?

HammerZ
2007.04.17, 06:05 PM
It can't be used without modding the mount like crazy, the shaft would be too short. Using an MR02 diff on the MR01 mount may work with spacers to take up the extra play. This is a very good FAQ topic, I have seen it asked a number of times.

yzfr191
2007.04.17, 06:10 PM
Ok, well im not looking to do some serious modding to my mini z motor mount, so i guess ill have to get a mr-02 one. The only reason i asked this in the first place is because there is an xmod and mini z part blowout in ebay, they only have the mr-01 diff. Shipping is all 1$ and the parts are cheaaaappp. Get there while u can, the parts are going quick. The name of the place is minizworld.

-Would an F1 diff work at all or no?

herman
2007.04.18, 12:27 AM
Hi, I was ondering if it was possible to put a ball diff for an Mr-01 in a Mr-02 without much problem. Will i have to mod the motor pod somehow? Thanks


did that way back in... 11/10/2003... man that was a loooong time ago...

for you to use a mr01 ball diff, you basically would have to change the motor mount to a mr01 motor mount too....

http://mini-zracer.com/forums/attachment.php?attachmentid=8060
http://mini-zracer.com/forums/attachment.php?attachmentid=8059

from the thread...
http://mini-zracer.com/forums/showthread.php?s=&threadid=10618


Would an F1 diff work at all or no?
hmm... haven't actually tried that...

hope this helps :D

HammerZ
2007.04.18, 02:51 AM
One thing to note, look at how off center the motor sits. That's one problem the original MR01 setup had. Most of my cars are running MR02 type diffs, even my MR01 with the MR01F rear mount. That may be a good reason why the MR01 diffs are so cheap on the bay.

soulstice
2007.04.19, 03:59 PM
If you have a MR01 diff lying around, is it possible to just swap the driveshaft with an MR02 driveshaft . . . essentially making it an 02 diff? Or is it more complicated than that?

HammerZ
2007.04.20, 02:50 AM
It would not work, this is looking at the stock diffs. The MR01 diff gear is set to close to the center of the shaft. The ball diffs also have a little thicker spur gear that uses larger diff balls. The parts that make up the MR01 gear pack is too wide to fit the MR02 shaft. I don't see the value in the MR01 diffs anymore.

I would invest $40 in an MR02 diff than throw away $5 on a marked down MR01 diff.

Here I added a shot of the MR015 (black gear) and MR01 (white gear) gear diffs. The MR015 is the same spec as the MR02 diff.

Programmers
2007.04.20, 05:36 AM
I did this not too long back. I change the whole rear end to an mr01 pod and use an mr01 diff... You need to mess with how the shock fixes to the pod but it does work niceley. :)

soulstice
2007.04.20, 10:37 AM
I did this not too long back. I change the whole rear end to an mr01 pod and use an mr01 diff... You need to mess with how the shock fixes to the pod but it does work niceley. :)

That's what I had been doing on my mini cooper. Problem for me is I can't really do any decent dampening set up using a 01 rear on a 02 chassis.

Hammer: Thanks for the pic, that's very helpful.

Programmers
2007.04.20, 10:39 AM
Oh I see, sorry then - can't help.