My old-new gold tub project...

[Eau Rouge]

No, only reamed them to accept .125" RC10 hinge pins.

[delsami]

b44 rear cvd's and b4 rear hub carriers??

i'm doing a similar build but i am machinig the chassis "worlds style"

this build is nicer than mine tho. nice work!

[Eau Rouge]

b44 rear cvd's and b4 rear hub carriers?

Yup, no modification other than enlarging the B4 sized .109" hingepin hole with a reamer to .125" for RC10 pins. The hubs are flopped to opposite sides for better alignment of the linkage, but it's probably not necessary. I'm not sure why people are machining their rear hubs, everything fits just fine as it is right out of the package.

I get some slight interference at full compression with the tire insides on the shock bottoms, but the drivetrain is fully free and clear of any issues.

[vintage AE]

b44 rear cvd's and b4 rear hub carriers?

I'm not sure why people are machining their rear hubs, everything fits just fine as it is right out of the package.

Luckily I haven't bought or milled anything like I planned. The rear B44 CVA bone is 31mm shorter than the B4 CVD bone and when using the B4 CVD the rear hub is being milled out to accommodate for it's length. I thought they were using the B4's because the B44 were too short, but now that I see this I am reconsidering things. I am using RPM Team Car arms with B4 hubs, but that's as far as I got.

[Eau Rouge]

Luckily I haven't bought or milled anything like I planned. The rear B44 CVA bone is 31mm shorter than the B4 CVD bone and when using the B4 CVD the rear hub is being milled out to accommodate for it's length. I thought they were using the B4's because the B44 were too short, but now that I see this I am reconsidering things. I am using RPM Team Car arms with B4 hubs, but that's as far as I got.

Except all of the length difference is in the bone, not in the hub/axle. B44 rear CVDs new out of the package, B4/B44 hubs (not the dual bearing size version) and used the included shims on the outside of the hub to make sure everything was as far away from the drivetrain as it could be. Standard .125" thick Associated axle washers on the outside and the bearing crush sleeves on the inside. I'll pull a wheel and take a picture of the setup in a few minutes.



dc

[Eau Rouge]

A closer shot of the rear end using contemporary Associate parts and old ones...

[vintage AE]

thanks for the photos, you just saved me a bunch of time and a little $$

[Asso_man!]

Hey Doug, what kind of rear track do you get with that recipe? Closer to stock RC10 or to B4?

Clean job as always!

[Eau Rouge]

Hey Doug, what kind of rear track do you get with that recipe? Closer to stock RC10 or to B4?

Clean job as always!

Thanks. The rear track is very close to an original RC10, when you include the B4 wheel/offset.

Measured from the face of the drive pin wheel mounting area without wheels on, then measured from the center of the axle line with wheels installed, to remove rear toe-in from the measurement:

• Stock RC10: 7.375" rear track width (9.000" with jellybean wheels/tires installed)
  
  Modified RC10 with B4/B44 outer drivetrain: 8.000" rear track width (9.250" with B4 wheels/tires installed)
  
  Stock B4: 8.313" rear track width (9.750" with b4 wheels/tires installed)

[aeiou]

I used Associated shock shafts for the inner hinge pins front and rear ...

Doug, I know you don't care for Associated shocks, but come on.

Seriously, nice build! BTW, have you used those shorty servos in an off road application before?

[Eau Rouge]

I used Associated shock shafts for the inner hinge pins front and rear ...

Doug, I know you don't care for Associated shocks, but come on.

They have to be used for something!

Seriously, nice build! BTW, have you used those shorty servos in an off road application before?

Yeah, I have used the s9550/s9551 for steering in 2wd and 4wd buggies, as well as modified dirt oval applications like sprint cars and EDMs. I have another in the front of my Atomic Carbon S2 and one in my Durango SlimB4. This one was previously in a touring car. I have always had great performance with them—on par with the s9450/s9451 Futaba servos.

[delsami]

THANK YOU SO MUCH!!!! a pic is worth 1000 words....i am so excited to get mine ready to race this winter.

i am so happy happy u showed a extremely simple way to run b4 wheels.

[JK Racing]

Doug, what size shock shafts did you use? Great idea

[Soncho Ponza]

Great build...

[GJW]

you should enter this thing in the worlds! bet you would do pretty well!! damn impressive doug.