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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 01-22-2013, 02:33 AM   #4561
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Anyone know a trusted shop where they have both aluminium wide rf and rr suspension holders in stock? It seems as though they are out of stock everywhere (amain,stormer,speedtech,mammoth etc)
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Old 01-22-2013, 09:40 AM   #4562
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Quote:
Originally Posted by Jason.Dias View Post
Hi fullsyzz,

The reason we're using these axles is because we are using the narrow suspension arm mounts (UMW511+UMW512), using these mounts narrows the rear end of the car by about 2mm, in order to counter act that we use the longer axle (UM510-02) with a 1mm axle washer(W0149GM) between the hub and the wheel hex.

Hope that helps.

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Perfect. Thanks!
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Old 01-22-2013, 10:20 AM   #4563
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Quote:
Originally Posted by Jason.Dias View Post
Hi fullsyzz,

The reason we're using these axles is because we are using the narrow suspension arm mounts (UMW511+UMW512), using these mounts narrows the rear end of the car by about 2mm, in order to counter act that we use the longer axle (UM510-02) with a 1mm axle washer(W0149GM) between the hub and the wheel hex.

Hope that helps.

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Are you using the RB-6 gull wing a-arm or the rb5 sp2 one hole a-arm with narrow hinge pin holders? Currently I went back to the rb5 sp2 one hole a-arm with the wide hinge pin holder(UM514GM & UM515GM) with good results.

Turbo
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Old 01-22-2013, 10:38 AM   #4564
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Quote:
Originally Posted by HalfManHalfGod View Post
Is there a guide on how to read the setup sheets? I understand how to setup my car following the sheet but what effect will it do? Like what would 1mm shims on the ackerman do? Shims under ball studs etc.
http://www.xxxmain.com/bookz.shtml

Well worth the money! Even though it is written for TC it still applies to off road.

Has a very helpful decription of what every adjustment does for entering, mid and exiting corners. Weight transfer!

How to fix...

Entering Push (Off-Power)
Entering Loose (Off-Power)
Mid-Corner Push (Neutral Power)
Mid-Corner Loose (Neutral Power)
Exiting Push (On-Power)
Exiting Loose (On-Power)

In other words... If you can tell the book what your car is doing wrong, it can tell you how to fix it.


Last edited by Kooz; 01-22-2013 at 10:49 AM.
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Old 01-22-2013, 10:48 AM   #4565
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Quote:
Originally Posted by Turbo911 View Post
Are you using the RB-6 gull wing a-arm or the rb5 sp2 one hole a-arm with narrow hinge pin holders? Currently I went back to the rb5 sp2 one hole a-arm with the wide hinge pin holder(UM514GM & UM515GM) with good results.

Turbo
The Cody Turner setup I was looking at was using the stock 6 arms, but with the arms flipped using the one hole side.
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Old 01-22-2013, 11:21 AM   #4566
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Originally Posted by OMG23RC View Post
Anyone know a trusted shop where they have both aluminium wide rf and rr suspension holders in stock? It seems as though they are out of stock everywhere (amain,stormer,speedtech,mammoth etc)
ebay japan, I got mine in 10 days. Rating was 99% for that trader. Not exactly what you want but other option is to buy used or hunt in LHS.
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Old 01-22-2013, 11:25 AM   #4567
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I'm very happy with my car for medium traction a good mix of technical with a handful of jumps. Ill get the setup posted tonight.
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Old 01-22-2013, 11:29 AM   #4568
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Old 01-22-2013, 11:35 AM   #4569
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Quote:
Originally Posted by Kooz View Post
xxxmain.com/bookz.shtml

Well worth the money! Even though it is written for TC it still applies to off road.

Has a very helpful decription of what every adjustment does for entering, mid and exiting corners. Weight transfer!

How to fix...

Entering Push (Off-Power)
Entering Loose (Off-Power)
Mid-Corner Push (Neutral Power)
Mid-Corner Loose (Neutral Power)
Exiting Push (On-Power)
Exiting Loose (On-Power)

In other words... If you can tell the book what your car is doing wrong, it can tell you how to fix it.

Thanks everyone for your input! I'll pick this one up.

Is push equal to understeer and loose is oversteer? I'm more used to on-road terminology.
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Old 01-22-2013, 11:48 AM   #4570
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For tuning guides check out of the hudy offload guides and the x ray setup guide for the t3.
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Old 01-22-2013, 11:48 AM   #4571
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Originally Posted by HalfManHalfGod View Post
Thanks everyone for your input! I'll pick this one up.

Is push equal to understeer and loose is oversteer? I'm more used to on-road terminology.
Yep spot on.
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Old 01-22-2013, 12:15 PM   #4572
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Another stupid question: What is the easiest way to pop off the turnbuckle from the ball stud? I'm having a hell of a time trying to pry these things off which I know i'm doing completely wrong.
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Old 01-22-2013, 12:20 PM   #4573
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Quote:
Originally Posted by HalfManHalfGod View Post
Is push equal to understeer and loose is oversteer? I'm more used to on-road terminology.
These terms are equally used in on-road.. but yes, understeer means it pushes, and oversteer means the rear end kicks around too easily.

Quote:
Originally Posted by HalfManHalfGod View Post
Another stupid question: What is the easiest way to pop off the turnbuckle from the ball stud? I'm having a hell of a time trying to pry these things off which I know i'm doing completely wrong.
I use a pair of normal pliers, and I "roll" the ballcup forward or backward until it comes off.

Make sure you center BOTH ballcups onto the ball studs so once popped back on, the entire link can rotate/twist both directions equally. You don't want a bind.
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Old 01-22-2013, 12:25 PM   #4574
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Quote:
Originally Posted by Coach Townsend View Post
Dudes serious, even has his car under 24hr surveillance,
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Old 01-22-2013, 12:30 PM   #4575
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Quote:
Originally Posted by Turbo911 View Post
Are you using the RB-6 gull wing a-arm or the rb5 sp2 one hole a-arm with narrow hinge pin holders? Currently I went back to the rb5 sp2 one hole a-arm with the wide hinge pin holder(UM514GM & UM515GM) with good results.

Turbo
I am still using the RB6 arms flipped to the one hole side, I like the feel of that a little more on the current layout, Drew Moller and a few others like the flat arms better. But with a fresh layout for Reedy we will have to see which feels better.
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