Want to buy RCM V3 Hybrids, what to use for center shafts?
 

Im currently using stockers for the centers and MIP 1665 cvd's front and rear, what are my options? I see that the RCM drive shaft coupler does not work with the new V3 versions so i cant use the stockers. I have also seen the splined units from MIP as well as the dogbone kit from Kershaw.

It says that they come with drive cups for a "dogbone" style center drive shaft, so im guessing the ones from kershaw will work, but i am unsure if the drive cups from the MIP units will fit on the diffs output shaft, anybody have an idea?

I also want to know if the included drive cups will work with my MIP cvd's, as i have heard that some have issues popping out if the cups arent long enough, the MIP ones seem to be the right length.

Thanks for any replies!

I'm using Kershaw dog bones for the center. They fit in the pinion cups that come with the V3 diffs. I then installed the 6mm diff pins (supplied with the V3 diff kit) and installed the traxxas diff cups on them so that I could use my traxxas CVD's. Everything looks cool as far as mockup. I haven't drove the the truck yet, hopefully Friday/Saturday will be the first run. I would think your MIP's would be find if you install the 6mm diff pins.

so the drive cups included will be too short for use with my cvd's? if so is my only option the traxxas extended drive cups?

The cups that come installed on the diff were to short with my setup in the rear. I'm running RPM True trac for rear setup. I dont see anything wrong with running the traxxas cups.

Update on the center shafts, if you want to run the Kershaw Steel center shafts, you will need a e-revo rear shaft and a emaxx front shaft. The steel e-revo shaft form KD is about 3 mm to long and the front bulkheads will not go on. I'm also going with the summit plastic shafts to see if they hold up better for me then the e-revo plastic shafts.

I am looking at getting a custom set made to fit when I finish my mock up. I don't want the plastic center shafts.

well i bit the bullet and ordered the V3 kits as well as the KD center dog bone kit, this of course was after reading what doo posted that they are the incorrect length.... I also ordered 1 set of traxxas extended cups.

Even if the dogbone from KD is short i think i might be able to modify it to make it fit, only time will tell.

After all of this im hopping that i will finally have a "bulletproof" drive train, the only thing left stock will be the tranny, i don't think i have seen many issues with the E-revo tranny though.

Now i just need to wait for my MMM to get back from castle and i will be set!

Just to clairify, the steel drive shafts (e-revo kit) the front is too LONG but the rear is perfect. You could just email KD and tell him you need a the steel front shaft out of his E-Maxx kit. I will NOT be running plastic center shafts. I will be testing plastic Summit
axle shafts, I have cvd's if the Summit's dont hold up to the Neu.

My diffs and dogbones are on the way and im wondering what fluid i should run in them, i already ordered some traxxas 50K, but after reading the instructions it says to run 7-10K in the front and 3-5K in the rear. I am not racing, so track performance is not what im looking for, will the 50K drive well under bashing circumstances or should i get some lighter diff fluids??

Thanks!

I have 30 minutes of full throttle on my V3 (6s Neu 1515 2.5d) geared for 50mph and no problems. The traxxas Summit axles llok the same as they did new. I'm only running Badlands for tires. So far so good. Shizzon I will check later to today to see what fluid I used, I cant remeber right at the moment what it was.
V3 is a very, very nice unit in my opinion.

good to here doo540, i ended up picking up 7k for the rear and 10k for the front, ill see how that feels and go from there. after this i think im nearly done with the E-revo as far as upgrading goes, drivetrain should be stout at least.

I just checked I'm running 5 rear and 7 front, the same in my savage xl.
I did break a summit axle shaft, I hit a metal pole at 50 mph and it split the front summit.

So what center driveshafts are people using with the V3 diffs. I have a pair of V3's sitting at the Post Office right now. Any part #'s? or anyway to use stock Trx shafts?

i ordered The Kershaw Designs center E-revo Dogbone kit

Shizzon reread post #8.
You can use the rear e-revo shaft from KD BUT you are going to need the 3905 (emaxx) front steel shaft. The e-revo front steel drive shaft is to long. Trust me I tried it.
My v3 are doing great. I also have a e-revo that is running the Losi LST2 diffs and that is a strong setup too. I've been beating on the V3 and they are holding up.
Shizzon I would think that Dan would exchange shafts for you if you email him. If not I will take that front steel shafts off your hands for you.

I emailed Dan about this and heres what he had to say:

"I have had a couple customer install the dogbone kit and thought the front dogbone was too long. When i probed a little further, I found out that the cups were installed with the stock set screws with pins instead of the supplied 4mm set screws. Makes all the difference."

I have no idea what dan is talking about there. As far as I know he doesn't have a set of V3 diff's in any of his revo's. Futher more I do have another revo that runs stock diffs with a set of his e-revo shafts, I use the traxxas pins to hold them to the pinion shafts and everythign is fine.

I have a set of V3 diffs in a revo. There is only one way to install the drive cups on the V3. The front drive shaft will not fit. I installed the drive cups as the instructions say on the pinions, and at the tranny side I used the traxxas pins to hold those cups on.
Let us know how yours turns out.

I think I'm going to have to get the Trx cups for the ext suspension. I mocked everything up and the Trx cv shafts are close to popping out the cup.

I might try to use the stock center shafts too if possible.

I just installed the diffs with Kershaws kit, as you stated the shaft was a tiny bit too long. To make it work i simply ground down the shaft coming out of the transmission, took me a couple minutes with the dremel.

The diffs themselves look great, fit and finish were also impressive.

and now for the picks!!

http://i582.photobucket.com/albums/s...1/DSC_0215.jpg

http://i582.photobucket.com/albums/s...1/DSC_0217.jpg

http://i582.photobucket.com/albums/s...1/DSC_0230.jpg

http://i582.photobucket.com/albums/s...1/DSC_0231.jpg

Do you have any binding issues w/the sase and the internal gears?

if tightened too much slightly, but as Mike stated there should be a wear-in period for the gears. I actually hooked them up to my dremel and spun them for a bit with the case tightened down and then backed off the screws a 1/4 turn or so and the binding was nearly all gone. Im sure it will get better with use as well.

I did the same in backing off of the case just a bit...now no probs.

How do the Traxxas cups #5153r fit with the Traxxas CV shafts?

im not using the traxxas extended cups, those are the MIP ones that came with the CVD's. i might try the traxxas ones (i bought them and didnt install them) as the MIP ones wont stay on the outputs, i think the setscrew is not all the way on the output.