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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 11-14-2012, 10:33 PM   #2596
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has anybody tryed the 05 rear hubs for more forward traction?
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Old 11-15-2012, 07:09 AM   #2597
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The reedy 17.5 with the torque rotor is good but I think the new d3.5 with torque rotor is better. End bell all the way up and geared 88/43 motor will run all day at 125 with no fade. Haven't tried the new tekin yet but I've never liked there stuff in the past.
I thought RPM rotors were the ones to go for 17.5?
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Old 11-15-2012, 07:14 AM   #2598
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did you run it in mid motor or rear motor ?
i ran it in rear motor.

i've ran the reedy and the orion..they are both very smooth.. the orion is so smooth it feels slow, which would make me pull the trigger farther faster which made me personally very in consistant. thats just how it felt to me in 2wd. in 4wd i absolutely love my vst.. i think i just need to take more time and dial it in to what i like in 2wd

hollywood 7.. i am running the .5 hubs in my car, with the stock rear arms and like the feel
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Old 11-15-2012, 07:15 AM   #2599
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I thought RPM rotors were the ones to go for 17.5?
If you don't need the torque, or need more top end, then yes. I've never been anywhere that I would want to sacrifice low end for more top end (in 17.5).
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Old 11-15-2012, 08:46 AM   #2600
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If you don't need the torque, or need more top end, then yes. I've never been anywhere that I would want to sacrifice low end for more top end (in 17.5).
I asked the same thing in the Tekin thread and the guys over there said those motors are better suited for on road cars. You could use it for 2wd buggy but they liked the normal one better.

Anyway, I get my RB6 today! So amped.
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Old 11-15-2012, 09:13 AM   #2601
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If you don't need the torque, or need more top end, then yes. I've never been anywhere that I would want to sacrifice low end for more top end (in 17.5).
Yep.. I run a Fantom Apex 17.5 and run the 12.5 High Torque rotor with it. It's a must have for the RB6 as the car is a bit on the porky side. (medium sized indoor clay).

I imagine if you were running on a very large outdoor track (1/8th scale track) with longer straights and fewer turns, you may want the 12.3 broad power band, or 12.3 high rpm... but I don't know anybody that runs 1/10th scale buggies on that type of track.
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Old 11-15-2012, 11:31 AM   #2602
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Originally Posted by pekow91 View Post
I asked the same thing in the Tekin thread and the guys over there said those motors are better suited for on road cars. You could use it for 2wd buggy but they liked the normal one better.

Anyway, I get my RB6 today! So amped.
I prefer the torque for all applications. I can manage RPMs with gearing

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Old 11-15-2012, 12:38 PM   #2603
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but I don't know anybody that runs 1/10th scale buggies on that type of track.
[waves hand] we have 2 pretty large tracks here in AZ they they always include long straights....

I run the Novak 17.5 High RPM motor and even on smaller tight tracks it is really good. The key is, you need to gear these like a 13.5 motor. i.e. my usually gearing is 29/69 instead of the 30's needed for a normal 17.5

I had it geared 32/69 when I first got it, and it was a mistake... no acceleration on layouts that have a turn followed by a jump. Re-gearing solved that.

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Old 11-15-2012, 01:09 PM   #2604
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Originally Posted by hollywood7 View Post
has anybody tryed the 05 rear hubs for more forward traction?
Yeah I did last race weekend...for sure the car was a little better accelerating and more stable while braking...lost some straight line speed but I think also lost some steering going in the corner.

I am going to try and lower the roll center (RF rear suspension blocks) which should give more overall traction...why don't you try that first or softer rear spring?
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Old 11-15-2012, 01:40 PM   #2605
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Another problem with the stock motors right now is roar, right now two motors that should be on the list of approvals are not (novak high rpm, and the new tekin motor). Then the one motor that should defiantly not be on the list (d3.5) is on the list. Roar is working on a different way to tech and approve the new 17.5 motors, the rules were written a long time ago. So some stuff is a little outdated. Right now they are not approving any new 17.5 motors, which sucks because i love my novak motor and really dont want to run my d3.5. To some people that dont mind if the motor is approved or not, thats fine. But i personally like knowing i can go to any race i want, roar event or not and know that i am allowed to race.
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Old 11-15-2012, 01:48 PM   #2606
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Another problem with the stock motors right now is roar, right now two motors that should be on the list of approvals are not (novak high rpm, and the new tekin motor). Then the one motor that should defiantly not be on the list (d3.5) is on the list. Roar is working on a different way to tech and approve the new 17.5 motors, the rules were written a long time ago. So some stuff is a little outdated. Right now they are not approving any new 17.5 motors, which sucks because i love my novak motor and really dont want to run my d3.5. To some people that dont mind if the motor is approved or not, thats fine. But i personally like knowing i can go to any race i want, roar event or not and know that i am allowed to race.
What does this have to do with the RB6? and I don't know anything about the D3.5 that should make it non-roar approved. It's a fine motor, but has no advantage over any other modern day 17.5 My fantom revtechs are equally as punchy and fast.
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Old 11-15-2012, 01:54 PM   #2607
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What does this have to do with the RB6? and I don't know anything about the D3.5 that should make it non-roar approved. It's a fine motor, but has no advantage over any other modern day 17.5 My fantom revtechs are equally as punchy and fast.
Sorry guys, my fault. Didn't mean to thread jack with motor talk. Lets go back to talking how great the RB6 is.
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Old 11-15-2012, 03:22 PM   #2608
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Sorry guys, my fault. Didn't mean to thread jack with motor talk. Lets go back to talking how great the RB6 is.
Well it solved something for me at least - get the high torque 12.5 rotor. Toasted my Ion3 a few days ago doing something stupid.
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Old 11-15-2012, 04:21 PM   #2609
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Are the trans bearings in the b5 the same as the b6?
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Old 11-15-2012, 04:34 PM   #2610
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Are the trans bearings in the b5 the same as the b6?
Yes they are
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