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Old 01-01-2007, 09:01 AM   #766
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I got a quick question. I'm building my standard MBX-5T kit right now and I'm on the diffs. Knowing when I assembled my Mugen XR 4.5 years ago, Mugen has always had good instructions, but not great.

So, for the diffs, I wanted to be 100% sure. There are 4 S3 O-rings for the front diff, NO S3 O-rings at all for the rear diff, and only 2 S3 O-rings for the center diff?? Is that correct?? The manual shows only 2 S3 O-rings to be used in the center diff, but I think it should be 4 right??

Thanks!
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Old 01-01-2007, 09:37 AM   #767
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Dan, You should only have to use 2 black o-rings per diff, one on each side of all 3 diffs where the outdrives push thru the cup and the gear. The real small o-rings(which I think are red) that use to go behind the 4 small gears, are no longer used and I even thought that Mugen had quit putting them in kits?
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Old 01-01-2007, 09:52 AM   #768
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Hmm....no red O-rings for the diffs. But yes, the S3 O-rings I'm talking about are the tiny ones that go behind the small spider gears.

The manual states 4 O-rings for the front diff, and none in the rear diff. However, for the center diff, the instructions only show just 2. That struck me as a bit odd so I only completed the front and rear diffs.

Might be a different diff assembly with the MBX5 buggy but just wondering if anyone else who has built a MBX-5T recently.
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Old 01-01-2007, 10:03 AM   #769
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Don't use the S3 O-rings in any of the diffs. Run it without them.
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Old 01-01-2007, 10:06 AM   #770
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Hmm
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Old 01-01-2007, 10:23 AM   #771
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Ok.
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Old 01-01-2007, 05:04 PM   #772
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Correct, don't use the small S3 o-rings in any of the diffs. Also, make sure you grease the outdrives well with the Mugen Super Grease or go to the local motorcycle shop and get the small tub of Maxima grease (it'll last forever).
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Old 01-01-2007, 06:15 PM   #773
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Thanks guys. Exactly what I was looking for.
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Old 01-02-2007, 07:42 AM   #774
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Greetings Ira,

Where did you and Allen wind up Sunday? Sorry we didn't get to stay to watch, we had to get with the two hour drive. One less bobble in the B and I would have stayed though! LOL That 4 sec bobble on the second to last lap cost me the bump! Racing was tight............

By the way the 5R is a awesome buggy. It got faster every time it hit the track. Can't wait to get some more time with it. I couldn't be more happy with it's first run.
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Old 01-02-2007, 05:44 PM   #775
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I'm glad you like the car, any time you need help let us know.

Both cars were AWESOME, Allen and I stepped on our you know WHATS.
I think Allen finished 5Th and I finished 6th. We both had the fastest lap times, besides Corry.
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Old 01-02-2007, 06:41 PM   #776
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Looking for a little help...

Getting ready to buy a mbx5 with all the prospec upgrades execpt for the rear axel carriers.
What is the difference between the prospec and the new mbx5r.
Should I just go ahead and buy a new 5r. I can get a great deal on the
mbx5 w/ engine and pipe.

Thanks,
Neil
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Old 01-02-2007, 06:50 PM   #777
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Humm, haven't run a 5R yet but the list of differences is EXTENSIVE.

I'm looking to upgrade from my 5prospec shorty and to be honest have disregarded the upgrade route as to expensive to be viable.

main differences

Shocks
Chassis (although a std. can be modified)
all suspension parts
all steering parts
center diff mounts
brake assembly

think thats about it
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Old 01-02-2007, 06:56 PM   #778
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Thanks,

Still not sure what I should do.
I do know that the buggy is in excelent condition.
Thanks again,
Neil
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Old 01-02-2007, 06:58 PM   #779
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Quote:
Originally Posted by Merciless
Shocks
Chassis (although a std. can be modified)
all suspension parts
all steering parts
center diff mounts
brake assembly

think thats about it
Yeah, other than those parts, it's almost identical.

The funny thing is that you can set them side by side and aside from the finish on the shocks and the curve of the upper front arms, you'd have a really hard time telling them apart.

FWIW, I swapped mine over to the "-R" and never touched the chassis...it's capable of full droop, as-is. It fit perfectly up into the new recesses into the arms. Isn't the difference all about the droop screw area?
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Old 01-02-2007, 07:01 PM   #780
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Default The new mbx5r shock springs

Where can you get them? Nitrohouse told me today 2 to 3 weeks maybe.He did not have a estimate due date. thanks
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