as soon as I made the post I knew someone is going to say this. The difference is so small I don't think they matters.

All you have to do is use the F201 48mm shafts and the origional 415 cups then you have a longer drive shaft

whoa! good finding!

now, how about a solid mid pulley?

Yes the MR4TC diff halves work great just need shiming out a little but anyone sorted a fixed centre pulley/shaft?

does anyone have the part numbers for the springs that dont come with the kit?

Sorry....
I personally wouldn't do it in mod, but for stock it should be ok. Just a little noisy.

ahh.. i see. i didnt have a set of the F's cvd's- just the stock dogbones. in that case, i think it would work fine, as long as the internals are the same. the Yoke cvd's had a smaller pivot inside.
there have been a couple of different ideas on the center shaft... maily getting another of the fixed pulleys and filing a bit. i may try that also. i better get it back together as it was till some parts get here!!!

id switch to the reg 64 pitch... the 04's are terribly noisy with reg pinions, even in stock...

Hi Guys,

We received more 415 parts in stock, including suspension blocks, rear sway bars, center pulleys and suspension blocks, we should have them up on the website soon.

Steve Wang

I've posted this before and had a chance to do some durability testing with an 8 single (stop go, brake, stop, go, brake). So far it has held up well. Make sure to use blue-loctite on the set screw or else it may loosen up on you....

This is Beale's idea and utilizes a secondary non-one-way pulley that has the boss machined/lathed off. It was then lined up and had two holes drilled. Finally it is held together with two rolled pins that were pressed in with a lot of pressure.

Exploded view of locked center pulley concept by Beale

Yeah, the center oneway is the easy part to lock up or mock up. Just the front diff was giving everyone the head ache. I'll try it later on down the line when I need it. Right now the oneway is all I need for outdoors.

I too agree with the .04 and 64 pitch gears. Mix the two and they are noisy. That's how it was when I first ran the 415. Til I switched over to my RW spurs.

53440 is the Spring Kit. You'll need 2 of them. The pack comes with 4 pairs of springs. 2 Kits will allow you to have the same spring color at all 4 corners if the setup calls for it.

ok.. here is the best i can come up with right now. using rear diff outddrives from MR4TC, plus the rear cvd's from same car, you can almost get there. as you can see in the pix, the Yoke takes the 6mm i.d. bearing- the Tamiya is 5mm. couldnt find a 6X11, so the best way i could come up with was to use a lathe to turn down the Yoke cvd... (actually, i used a dremel on a junk one to mock it up- lol...) seems like the length is fine, and there is minor shimming on either side of the diff to take up some slack. that F201 idea might work too, but i didnt have any of those to try! pix to follow...

next pic... any input/ideas/etc?

tamiyadriver... speedtech has the parts.. ill look into it also. maybe do some testing this sat at tamiya.

that would be excellent! as long as the F201 drives arent TOO long, and the internals fit the original axles,we should be golden. im not real hip on the yoke drives, anyway. the machining is a hassle, plus they have reeeeally tiny pivots inside them- wear out way too fast. whew, time for sleepy is 12:40 here now!!! gotta work in 7 hours...