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Kyosho Ultima RB6 & RB6.6 Car Thread

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Kyosho Ultima RB6 & RB6.6 Car Thread

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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 07-04-2015, 07:22 AM
  #12166  
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Thanks oPaulo. Definitely took my time on laying out all the electronics.

Man...those arms look like twins.
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Old 07-04-2015, 10:02 AM
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Those blue wire retainers... where can I buy some?
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Old 07-04-2015, 10:15 AM
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Originally Posted by oPAULo View Post
Those are beautiful timannn!
My son and I had a rough start tonight but he pulled out a win in novice and I won the B and 7th in the A.

So are the carbon composite arm stronger than the regular??
Crazy, I haven't broken a single part on mine and I've haven't been easy on it...
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Old 07-04-2015, 10:16 AM
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Originally Posted by ThePanda View Post
Those blue wire retainers... where can I buy some?
Search for MST 3 wire clamp on eBay. All different colors available.
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Old 07-04-2015, 01:13 PM
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Originally Posted by symmetricon View Post
Crazy, I haven't broken a single part on mine and I've haven't been easy on it...
Don't I know it! We have beat this thing without mercy. Broke another one today and had to switch to RB5 flat arms because it's all we had left.
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Old 07-05-2015, 08:59 AM
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Originally Posted by timannnn6 View Post
Thanks oPaulo. Definitely took my time on laying out all the electronics.

Man...those arms look like twins.
Aside from the fact that
A) You can't move the battery in either of those cars, thus eliminating an important adjustment.
And
B) The one car has probably 2-3oz worth of wire on one side of the car, because the ESC is miles from the motor.
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Old 07-05-2015, 05:46 PM
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Originally Posted by K_King View Post
I tried a different front end on my car this last weekend for our series race here. I have really liked my car, but with the new Aluminum 502 pivot coming out that I run on my truck, I wanted to try that front end on my 2W. It was actually pretty good. I thought I would lose some steering but I don't think I lost as much as I thought, but I gained quite a bit of stability allowing me to drive it a little harder. For those looking to try something different, just please note the different droop, axle spacing, and parts used on the front end.

What else did you change when you went to the new front block?

Did it make the car to wide if you ran the caster blocks out?

What did you notice by using this new front block?
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Old 07-05-2015, 07:57 PM
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No 3 hole rear arms anywhere?
Guess I'm not the only one breaking them.
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Old 07-05-2015, 10:05 PM
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Originally Posted by Kraig View Post
What else did you change when you went to the new front block?

Did it make the car to wide if you ran the caster blocks out?

What did you notice by using this new front block?
I only changed the front pivot and adjusted the caster block to compensate for the overall track width. If you run it wide it might still be ok, but I didn't check.

Similar to the truck it basically makes the front end not roll as much while laying the shocks down a tick. You get less steering but the front end is a little more predictable when running it hard.
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Old 07-07-2015, 09:34 PM
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Any feedback on the JTP front shock tower?
I am curious...
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Old 07-07-2015, 09:46 PM
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Front end reacts faster, more roll in the corners giving more steering on exit. Lands about the same but it has a bit more plunge on compression.
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Old 07-08-2015, 09:10 PM
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Thank you very much KK, I appreciate it. Looks like I will give it a try with my Mod buggy, maybe 17.5 too.

After a few club races my 17.5 car is just getting faster. Last race I bumped up to the A and finished on the podium, that felt good.

My Mod buggy is almost ready for showtime. Who is running their shorty inline?

So far, that is my plan
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Old 07-09-2015, 06:26 AM
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Default shock retainers

Has anyone tried any other shock retainers on kyosho shocks ..as I noticed u can't buy kyosho retainers by themselves only with complete shock kits ? Do associated or losi fit ?
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Old 07-09-2015, 06:05 PM
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This may or may not have been answered but what is the difference between the 2015 version of the kit and the older? Why is the older one still more money? You can buy either on amain currently
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Old 07-09-2015, 10:24 PM
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Here's a stock setup based off my current mod setup. It was really fast but stable for me. I dont have anything crazy on my car like pucks or cut gears, it's basically the aluminum parts from Kyosho, a Schelle top shaft and lockout, and a kyosho gear diff. The mid motor is pretty essential to stock racing as well and I would recommend making one as its pretty easy to do.



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