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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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02-01-2014, 03:47 PM

#9646

sir_thomas

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Tebo Reedy setup with pics!

2wdMod.com posted on Tebo's setup with pictures from the race as well.

http://2wdmod.com/2014/01/31/tebos-2...dy-setup-2014/

02-01-2014, 04:52 PM

#9647

nickdawg18

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are kyosho ball studs really weak or is it just me? I came off the track today because I broke a ball stud off in a kyosho aluminum rear hub. (gonna have fun getting that out). I also noticed that 2 more ball studs were bent. is there a stronger option out there? I'm running on carpet were wrecks are little more painful then on dirt. thanks guys.

02-01-2014, 05:38 PM

#9648

Kraig

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Quote:

Originally Posted by mog ruith

Thanks 1, kraig and whitz. What would you guys replace first before the stock parts break? I have the alu rear hub on my list.

I would get the aluminum steering rack first. Then the adjustable rear hub hangers because they are more adjustable than just the hubs. You could swap these two options. Then I would get the hubs.

02-01-2014, 05:57 PM

#9649

1967rs

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Quote:

Originally Posted by nickdawg18

I replaced all mine with Lunsford, I have never had a problem after that.

02-01-2014, 06:19 PM

#9650

nickdawg18

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Quote:

Originally Posted by 1967rs

I replaced all mine with Lunsford, I have never had a problem after that.

But you did have problems with the kyosho studs?

02-01-2014, 06:47 PM

#9651

Holmberg418

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Quote:

Originally Posted by nickdawg18

But you did have problems with the kyosho studs?

I haven't really had a big problem with them. Just always run a plastic shim on the aluminum Huns and never use thread lock. Just make sure there always tight and you shouldn't have that many problems.

02-01-2014, 07:28 PM

#9652

mog ruith

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Quote:

Originally Posted by Kraig

I would get the aluminum steering rack first. Then the adjustable rear hub hangers because they are more adjustable than just the hubs. You could swap these two options. Then I would get the hubs.

Thanks for the advice, but right now i got to replace my broken rear hub. And is the steering rack that weak?

02-01-2014, 08:02 PM

#9653

VenturaDC

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Quote:

Originally Posted by mog ruith

Thanks for the advice, but right now i got to replace my broken rear hub. And is the steering rack that weak?

It really is that weak

02-02-2014, 01:06 AM

#9654

Tom87

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Plastic steering rack is fine

02-02-2014, 01:19 AM

#9655

Kuya_Kimo

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Quote:

Originally Posted by VenturaDC

It really is that weak

It's a common break. Someone will always say "I ran mine for months", but many break the stock plastic steering horn, rear plastic suspension hangers, and stock rear hubs.

Outside of that, it's golden (maybe golden-red).

02-02-2014, 07:00 AM

#9656

Trevor Williams

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I have never broken a single part on my rb6......its a durable car.

02-02-2014, 07:02 AM

#9657

1967rs

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Quote:

Originally Posted by nickdawg18

But you did have problems with the kyosho studs?

I broke two, both in the rear hub, one in the rb6 the other in the rt6.

02-02-2014, 07:22 AM

#9658

Trevor Williams

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im still running the molded 0° stock pieces .

Nick...stop by SmacTrac Friday-Sunday for the JC Winter Nat s.

p.s.: I cant believe you arent signed up man!!

Last edited by Trevor Williams; 02-02-2014 at 08:47 AM.

02-02-2014, 11:06 AM

#9659

kenny lutz

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I ran my car this weekend with a lw chassis and puck system. The car was the best it has ever been. People with rm was struggling with traction and my mm had a ton of traction. I qualified 4 the and finished second in stock and the car was on rails all day.

02-02-2014, 02:34 PM

#9660

Kraig

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Quote:

Originally Posted by mog ruith

Thanks for the advice, but right now i got to replace my broken rear hub. And is the steering rack that weak?

Yes and no. It depends on what type of material your track consists of, specifically borders. In addition your driving style and who you are out on the track with could affect it too. If you are the type that hammers the throttle when your car is out of control and bounce off the pipes or like to pick on vehicles bigger than you your experience in breaking parts will go up.