center drive shaft a little short
 

Hi I am in the process of a 3.3 conversion. I have the 3905 center transmission, UE 6mm drive cups, and UE drive shaft. The drive shaft seems to have a little bit of play (4mm or so) but it is still very much inside both cups...my question is, should there be no play at all, or very minimal play(like 1mm)?

bumpers..

I am running into a prob. w/my 3.3 conversion as well...my new v3 diffs have a different cup diameter than the inner diameter of the ones on the trans. I have a set of dogbones that will fit, but one end has some play and the other does not. I am trying to find a cup that will fit on the trans that has the same size inner cup diameter as the dogbone.....needless to say that is my challenge.

In answer to your question...on my buggy, there is about 2mm of play..on my crt.5 there is about 3mm of play w/no issues

right on mag I just needed to see if it was ok for some play..that rhymes:lol:
you're using the 3905 transmission also, right? I have the v3's as well and I'm using the UE 6mm transmission cups, but the ID's aren't slotted;the just use two set screws to hold the shafts so I made sure that it it really tight w/threadlocker...good luck with your situation though.

Use some fuel tubing in the cups to center the bones...

Fuel tubing? In the drive cups you say? Why, the mere notion of it is...well I will have to try that!
-Dan Halen

I use S3 o-rings on mine.

:yipi:

best way i have found too

I cram old pieces of bubble gum in the cups and then duct tape the outsides. I also like to wrap duct tape on the tires as it keeps the road from wearing the tread down. These are all good tricks, I will think of more and write them down. Wrapping duct tape around the motor is also good to keep the heat in (heat = power), why waste it!

LOL pimp haha

duct tape...the stuff of the gods

good stuff

you could also save money by filling your shocks and diffs with pudding (its alot cheeper than silicone oil and tastes better too)

stop buying expensive tire foam, you can fill alot of tires with just one can of great stuff foam

Good tips, I like to stuff the tire foams down my pants... I get alot of "attention" at the club with that trick!

Seems like the molded foams don not fit as well though...

Mayo would be better in shocks, IMO. That way when you pop one it would look really funny with the white stuff dripping off it.

:lol: this forums great

Well the guy at my lhs told me that ketchup is a good substitute for 30w oil (true story) so mix up your condiments to tune your suspension :)

Don't forget the BBQ diff fluid!!!!!!!!!!! :lol:

LMFAO!!!!!!!!:lol:

In regards to cups fitting/dogbones. I was helping my B'in law put together his new to him Emaxx FLM chassis. Magman, maybe you can help here - it came with what I believe to be a UE dogbone for the rear. However, it didnt have any cups with it. I happened to have a set of bent UE shafts, so I gave him a set of the cups for it. However, it ended up being just a little on the tight side. So I took apart one of his Traxxas center dogbones, and it was a perfect fit - suprised the heck out of me. I'm just not certain what brand of shaft came with the FLM.