Picked up a Stampede 4x4!!

[Bondonutz]

Originally Posted by lincpimp

OK, just got some parts in.

I have a pretty much off the shelf cvd option here. It does require bearings with a 6mm inner, so either go with a 6x11 as a drop in replacement, or enlarge the hub carrier to fit a 6x12.

Using these parts:

HPI 80853 70mm savvy center driveshaft (made by mip)
Mip 1488 tmaxx axle
Mip 1147 rebuild kit
stock hex drilled to 6mm inner or the tekno 12mm hex for 6mm axle?
stock tmaxx wheel drive pin trimmed slightly or a shorter pin?
revo diff outputs (drop in fit for the stampy diff, with 6mm outputs)
6mm bore drivecups, long length (will need some help identifying these)

So you end up with a seriously stong 1/8 scale size mip rear cvd setup, larger 6x12 bearings and 6mm outputs in the diff.

You are all welcome.

Pics to follow.

Where are these pic's Pimple ?

[lincpimp]

Originally Posted by Bondonutz

Where are these pic's Pimple ?

Bite me. On second thought, keep your hands to yourself!!!

I will get some pics up when I have something pic worthy.

So I did try to open up the stock carrier with the 12mm end mill. Not easy to do without a mill, and some sort of contraption to hold the carrier.

So I ordered a set of the tekno rear hubs, cost about 10 bucks shipped. I got the .5 deg models as I really do not like alot of fixed toe in on my basher rides. I would rather they go a bit faster than turn in super tight.

The tekno carrier is big, beefy and looks really stout. Very well made part. It uses a 6x12x4 outer bearing, and a 15x10x4 inner bearing. Outer bearing size is just what we wnat to use the 6mm tmaxx axles. The inner bearing is too big, but it can be replaced with an off the shelf 6x15x5 bearing.

I did not order the bearings, as I was not sure if the maxx axle would be long enough with the 6x15x5 bearing installed, as it is 1mm longer than the bearing tekno specs. I did some measuring and we are good to go with the 6x15x5 bearing.

The tekno hub is about 12.75mm thick at the bearing area, measured from the face of the front bearing to the back of the carrier, imagine the same plane the axle rides in. Since the inner bearing is recessed into the carrier with the tekno spec-ed bearing you get about 11mm from 1 bearing face to the other. With the thicker 6x15x5 bearing in there we are looking at around 12mm. The tmaxx axle is a bit longer than that from the cvd area to the pin hole. So it looks like 1 traxxas 6mm id teflon washer will take up the slack. Perfect.

I will order the 6x15x5 bearings and some 6mm id washers.

This will increase bearing life and load holding alot, as the bearings are much bigger than the stock 5x11 turds. Traxxas really needed to step up to 6mm axles and larger sliders, the old rusty/pede stuff is way overtaxed in a heavier vehicle like this.

So total cost so far:

hpi cvd shafts $2 for a pair (super ebay sale)
tmaxx axles $8 for a pair
mip cvd parts (free)
tekno .5 deg rear hubs $10
long drive cups (free)
6x12x4 bearings (free)
6x15x5 bearis (tbd)
revo 6mm diff outputs (free)
assorted hardware (free)

So I have about 20 bucks in this, if you do not count the endmill ($7) and my time (priceless).

And I will end up with some super sturdy cvds/axles! Much bigger cvd joints and thicker shafts than the tekno or others. Hell, this stuff works on maxx and savvy trucks, should last forever on a pede 4x4, which likely weighs 4lbs less.

I will say that the front driveshafts have not worn at all. (only had about 3 packs thru it) I will leave them in untill they crap out and see if my rear solution will work in the front. I will buy the tekno hubs as it makes fitting bearings alot easier with limited machine tools.