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Old 12-21-2016, 08:46 AM   -   Wikipost
R/C Tech Forums Thread Wiki: Kyosho Ultima RB6 & RB6.6 Car Thread
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Last edit by: tobamiester
RB6.6 Kyosho America Product Page: http://www.kyoshoamerica.com/ULTIMA-...T_p_24505.html

RB6.6 Manual http://www.kyosho.com/jpn/support/in...A_RB6_6_IM.pdf

RB6.6 Kyosho Youtube https://www.youtube.com/watch?v=vW_sR667utY

MSRP $639 MAP $399.99

-------------------------------
New RB6.6 parts (compared exploded views, prices and links are Kyosho America):

Chassis:
  1. Main chassis - UM731 - $125.99
  2. Side guards - UM732 - $9.99

Battery Holder:
  1. Battery plate - UM733 - $8.99
  2. Battery foam - UM741 - $7.99

Rear Bulkheads:
  1. MM3 and Laydown - UM740 - $9.99
    • MM3 bulkhead
    • Laydown bulkhead
    • Swaybar Holders

3 Gear Transmission (MM and RM):
  1. Transmission - UM734 - $10.99
    • transmission cases
    • spacers
    • caps
    • plastic FR & RR suspension hangers

  2. Gear Cover - UM735 - $6.99

Laydown Transmission (3 and 4 gear possible):
  1. Transmission - UM736 - $10.99
    • transmission cases
    • spacers
    • caps
    • required extra hardware
    • pastic FR suspension hanger

  2. 40T idler - UM737 - $6.99
  3. Motor plate - UM738 - $18.99
  4. Gear cover - UM739 - $6.99

Body:
  1. Blade body - UMB05 - $27.99

Optional Parts:
  1. Lightweigt Blade body - UMB05LW - $31.99
  2. Aluminum FR suspension hanger - UMW705B - $28.99 (may be able to file UMW705 to fit)
  3. Brass FR suspension hanger - UMW725B - $30.99 (looks more different than UMW725..someone confirm?)

Typical Upgrades for new RB6.6 Buyers

UMW701 Aluminum Steering Plate (RB6)
UMW702 Aluminum Crank Arm (RB6)
UMW704-0 V2 Aluminum Rear Hub Set(0/RB6)
UMW705B Aluminum Rear Sus. Holder (RF/RB6.6) or brass UMW725B
UMW707 Aluminum Rear Sus. Holder (RR-Mid)

Nice to have:

UMW723 Aluminum Front Sus Block (Type B/10g/RB6/RT6/SC6).


Aftermarket Parts:

Front Wing: https://www.prolineracing.com/perfor...mount-alum-rb6

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Old 06-16-2015, 03:44 AM   #12136
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symmetricon what body is that? looks good.
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Old 06-16-2015, 05:12 AM   #12137
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Quote:
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symmetricon what body is that? looks good.
The Sweep Muzzle body...
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Old 06-16-2015, 11:41 AM   #12138
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To get 25 degrees of front kick it looks like you put the 25 facing the rear??
The manual is just clear as mud...
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Old 06-16-2015, 11:51 AM   #12139
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Whatever if facing forward is what your running. If you want 25* make sure the 25* is facing the front/top.
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Old 06-16-2015, 11:59 AM   #12140
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Originally Posted by 3srcracing View Post
Whatever if facing forward is what your running. If you want 25* make sure the 25* is facing the front/top.
That's what I gathered from the manual but dang, looking at the block that seems bass ackwards to me. 25 forward gives it steeper or more kick.
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Old 06-16-2015, 12:06 PM   #12141
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OK my bad. I was looking at the old block I just took out. That thing is really beat to crap.
Just took the new block out of the package and now it makes sense.
My old block is totally warped!! I bet it handles even better now!! LOL!
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Old 06-17-2015, 11:21 AM   #12142
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Got the frontend all freshened up. Can't wait to hit Trackside raceway on Friday!!

I'm sure most already know this and are doing this but I had a little slop in the JC and Schelle steering rack. These shim sets are sweet for tightening up the lash between moving parts in basically the entire car. With the fresh front end I didn't need any but as the hinge points wear you can throw in a shim and tighten it up again. I added a .2 to the aluminum standoffs for the steering rack. .1 wasn't enough. .3 was just a shade snug. I added a .1 with the front axle spacers to make them butter smooth with zero endplay. They also fit in place of the rear antisquat shims.
Just a tip for noobs from a noob.
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Old 06-18-2015, 09:52 AM   #12143
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Quote:
Originally Posted by rclove13 View Post
I have a 72 tooth spur with a 7.5 motor. In mid
What pinion should I be using. Thanks for the info
Depending on the track and how your timing is set, I'd guess right around 18-20 range which might not fit.
That small spur is more for spec class gearing.
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Old 06-18-2015, 12:18 PM   #12144
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Most run 78spur. With a 72, might be hard to get a pinion under 20 to get to thr spur. 78 -23 or close to that should be plenty for most tracks
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Old 06-18-2015, 12:51 PM   #12145
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What does the low mount 4.8 ball stud in the akerman do for the car? And would there be any benefit running it on the steering arm?
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Old 06-18-2015, 04:43 PM   #12146
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Quote:
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What does the low mount 4.8 ball stud in the akerman do for the car? And would there be any benefit running it on the steering arm?
The kyosho low mount ball stud is just a normal ball stud that is 1mm lower or closer to what you screw it into. You can use them anywhere you would a normal ball stud as a tuning option.

An example would be the steering rack. In the forward rack position using a low mount ball stud is the same as reversing the rack. Running the rack backwards with a 1mm shim and normal ball stud equal rack forward. Many ways to achieve the same thing.

The real benefit of the low mount ball stud is things like bump steer and roll centre changes on the camber links. It's common to run a low mount on the inner camber link of the zx6 to raise the roll centre in high grip conditions.
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Old 06-19-2015, 03:27 AM   #12147
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Thanks for the info.
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Old 06-19-2015, 02:02 PM   #12148
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Quote:
Originally Posted by oPAULo View Post
Got the frontend all freshened up. Can't wait to hit Trackside raceway on Friday!!

I'm sure most already know this and are doing this but I had a little slop in the JC and Schelle steering rack. These shim sets are sweet for tightening up the lash between moving parts in basically the entire car. With the fresh front end I didn't need any but as the hinge points wear you can throw in a shim and tighten it up again. I added a .2 to the aluminum standoffs for the steering rack. .1 wasn't enough. .3 was just a shade snug. I added a .1 with the front axle spacers to make them butter smooth with zero endplay. They also fit in place of the rear antisquat shims.
Just a tip for noobs from a noob.
did u use the 5x7 for the steering rack
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Old 06-19-2015, 03:12 PM   #12149
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Quote:
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did u use the 5x7 for the steering rack
I did. Fits the shaft perfectly.
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Old 06-22-2015, 11:10 PM   #12150
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Noob question! Can you use the b5 rear hubs on the rb6? I'm digging the schelle ones...
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