Matt Howard

iTrader: (6)

It's the same as the old belt drive TC, I've got one in mine

edseb

Thanks. That will make things easier. I still have a couple MR4TC cars around with belts.

ongbenghui

iTrader: (5)

Hi,

I find that dirt & sand can get into the drive train of MR4-BC
easily. Does it make sense to drill a hole under the front & rear diff for dirt to escape ? as well as the small section under the spur gear.

Anyone tried that with good result ?

Please advise.

mike.stening

the MX4 used to have a hole under the spur but not the diff, i think this would be asking for trouble. one mod i have noticed is that some drivers have been cutting away the spur cover on the rear bulkhead cap and the top deck which i assume would allow the spur to throw out any dirt it collects rather than the covers keeping it in the drive train. the hole for the spur on the MX4 was mainly there to allow the use of an 84T spur which would be flush with the bottom of the chassis.

hope that helps

oople

i was told they cut that away to make it easier to check the pinion mesh / move the spur

mike.stening

hmm... possibly
does have a slight draw back though as it does allow the chassis to flex a bit more.

i also saw on the millenium kit that masami produced for a short while (YRP) he had a lexan cover that went over the gap at the rear to stop dirt getting in the rear box which is an option if you fancy fashioning one.

ongbenghui

iTrader: (5)

hmm... MX-4 YMP is a mid drive car. So, it is possible to
use a piece of lexan plate to cover the rear bulkhead.

Maybe not for MR4-BC.

mike.stening

sorry, yeah i ment YMP .
i is doable just not practicle

cartmen34

iTrader: (2)

I know I asked this question several pages back, but I'm not entirely sure anybody completely answered it. So, since I've just sold one of my 4wd buggies, I'm again looking at this car, and I need to know what spares to stock up on, as my LHS doesn't stock any Yokomo parts at all.

For the Special Edition kit, what spares will I need to stock up on? The front bulkhead seems to be a pretty common breakable part, but anything else? front spindles? front uprights? A-arms? Steering assembly components? shock towers? anything at all?

Thanks for any input you guys can provide!!

stu541

iTrader: (17)

Yeah on all the above. Anything to do with the front end. Not that it is that weak, but just because the shop doesn't stock parts. the front bulkhead cap for sure.

edseb

I would also get a spare rear belt, and because the wheels are unique, get some dish wheels too. Also, there are 2 tiny set screws for the front shock tower, and without them your tower will come loose. I'm sure they're cheap, so you mine as well have piece of mind.

mtn bkr

iTrader: (19)

I don't remember how many pages back it was, but I posted a tip on making a hinge pin brace out of woven carbon fiber. I highly suggest doing this mod. 4 of us did this at my local track, and we haven't broken any bulkheads since.

403forbidden

iTrader: (11)

hello...can someone ID this car for me? I don't really know which version it is...thanks

mtn bkr

iTrader: (19)

[QUOTE]Originally posted by 403forbidden
[B]hello...can someone ID this car for me? I don't really know which version it is...thanks

It's an MR4-BC Special. That's Yokomo's latest model.

mike.stening

2003 special version
things that might be throwing you are the AE battery strap, cant quite see if there has been a 7th battery slot added, and the mod to the rear wishbones which the japanise drivers use, good for dirt tracks.