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Kyosho Ultima RB6 & RB6.6 Car Thread

12-21-2016, 08:46 AM - Wikipost

R/C Tech ForumsThread 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:

Main chassis - UM731 - $125.99
Side guards - UM732 - $9.99

Battery Holder:

Battery plate - UM733 - $8.99
Battery foam - UM741 - $7.99

Rear Bulkheads:

MM3 and Laydown - UM740 - $9.99
- MM3 bulkhead
- Laydown bulkhead
- Swaybar Holders

3 Gear Transmission (MM and RM):

Transmission - UM734 - $10.99
- transmission cases
- spacers
- caps
- plastic FR & RR suspension hangers
Gear Cover - UM735 - $6.99

Laydown Transmission (3 and 4 gear possible):

Transmission - UM736 - $10.99
- transmission cases
- spacers
- caps
- required extra hardware
- pastic FR suspension hanger
40T idler - UM737 - $6.99
Motor plate - UM738 - $18.99
Gear cover - UM739 - $6.99

Body:

Blade body - UMB05 - $27.99

Optional Parts:

Lightweigt Blade body - UMB05LW - $31.99
Aluminum FR suspension hanger - UMW705B - $28.99 (may be able to file UMW705 to fit)
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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11-07-2015, 11:19 AM

#12721

MayorRC

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If I remember right all I needed was a .1mm shim below the crank arms and the brace fit perfect, no play. Are your steering posts (silver) worn quite a bit by chance?

11-07-2015, 12:40 PM

#12722

nitroargi

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No they are fairly new

11-07-2015, 07:04 PM

#12723

raved007

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I wish they have new RB7 come out very soon. I pre-order 22 3.0 but i want this brand. I have xb4 '15 and love it so far.

11-07-2015, 09:04 PM

#12724

whitrzac

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Quote:

Originally Posted by raved007

I wish they have new RB7 come out very soon. I pre-order 22 3.0 but i want this brand. I have xb4 '15 and love it so far.

Why would there be an rb7?

The Rb5 'generation' was ~5 years+. We're on year 3 for the rb6.
The "rb" before the RB5 was not much different than the early RB5s too.

11-07-2015, 10:53 PM

#12725

LiL CeeZ

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My RB6 has been doing me proud lately. I'm at 1551 grams and the car is really easy to drive, the driver though needs some work LOL. I've got the 3 gear and been running a D4-1S certified and it's pulling like a madman down the straights and plenty of power for the short run ways to the rhythm section we have that's double double double out of a tight turn. A guy I met at the track and now good friend has been kind enough to steer me in the right direction and I just stay on top of a few things and the car stays consistent now and the progression in my driving is improving after each outing. I'm loving this car.

11-08-2015, 01:56 PM

#12726

t8rtot

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Quote:

Originally Posted by raved007

I wish they have new RB7 come out very soon. I pre-order 22 3.0 but i want this brand. I have xb4 '15 and love it so far.

Is the RB6 not competitive or do you just want a new car because other companies are rolling out new ones? The latter isn't a wrong answer necessarily but there is a difference.

11-08-2015, 02:33 PM

#12727

madweazl

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I always want something new!

Havent even run my RB6 yet and I'm looking at other vehicles. I'll update my 4wd first though.

11-08-2015, 04:50 PM

#12728

miquelmah

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motor 145gr y lipo de 135gr ......

https://www.youtube.com/watch?v=wvEn9vckrk0

11-11-2015, 03:19 AM

#12729

eper

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Quote:

Originally Posted by nitroargi

No they are fairly new

did u ever figure out the rack issue i just ordered one of those braces so i should be able to help u out once i get the part and see whats going on

11-11-2015, 09:39 AM

#12730

K_King

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Quote:

Originally Posted by nitroargi

Hello guys,

I wanted to try the UMW724 steering brace in my car but it seems there is a binding problem after installation. Added the shims that came with the kit but the binding remains...any ideas?

Theres a 1.5mm shim that goes under the steering arms, but the problem with that brace is that it incorporates the shim on the brace and essentially puts it on top. The issue I had was that if you ran 25/0 caster you gave yourself bump out that you couldnt fix (by lowering the ackerman bars you are essentially raising the steering ballstud).

I shaved the brace flat, but in the end took it off. If you run a truck it's fine as the shim is on top of the steering rack, but on the buggy it's not correct.

11-13-2015, 10:04 PM

#12731

nitroargi

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Quote:

Originally Posted by eper

did u ever figure out the rack issue i just ordered one of those braces so i should be able to help u out once i get the part and see whats going on

Didn't have time to mess with the car so I left it as it it for now...if you come up with any ideas let me know!

11-14-2015, 03:31 AM

#12732

eper

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ill be installing it tomorrow and ill post my findings as its a race day

11-14-2015, 07:07 AM

#12733

yodace

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What company sells the 3 gear transmissions?

11-14-2015, 08:33 AM

#12734

Airlmeier4422

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Looking on gearing advice for my rb6. I have a 10.5 viper with 25 degrees of mechanical timing with no esc boost or timing. What would be the best pinion to be paired with 82 spur? Would it be a 26-27t pinion? Thanks.

11-14-2015, 11:40 AM

#12735

robbie_gtc

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Hey guys, just picked up an rb6 that I am going to be trying out. Currently have 2 b5m t5m and sc5m that I run 3 gear on. I love the way 3 gear changed the handling of the kit.

Question.. looking at the 3 gear for thr rb6. What have you noticed in changes in the way the car handles vs 4 gear?

I will be running the car in stock and mod indoors.