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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 07-16-2016, 07:19 PM
  #13411  
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https://www.amainhobbies.com/kyosho-...34302b/p523452
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Old 07-16-2016, 09:11 PM
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Originally Posted by foampervert View Post
They always think Ima cheating, cos everything looks so nice and neat.


Actually, I always think I'm cheating too!

I do like a battery forward position on a regular/old/2012 rb6 in 4 gear mid motor... Car seems the best balanced... With a normal shorty, I'll still get quite a bit of on power push, out of corners.
The guys at my track think stuff is missing. With low profile servos, tiny or combo Rxs and wire hiding channels there is no help for the uninformed. I am a lonely K car in a sea of Losi and TA racers. I hope some will come back for the 6.6. The first time I was accused of cheating I knew I was getting faster

Motor, ESC and battery from back to front has been good for me.
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Old 07-16-2016, 11:55 PM
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I am running on avtight indoor loose track. I set up the rb6 with a 3 gear transmission and a mixture of tebo's fastlane setup and reedy setups. With electrons. Buggys is loose everywhere ?
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Old 07-17-2016, 05:51 AM
  #13414  
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Originally Posted by GIHOSU View Post
The guys at my track think stuff is missing. With low profile servos, tiny or combo Rxs and wire hiding channels there is no help for the uninformed. I am a lonely K car in a sea of Losi and TA racers. I hope some will come back for the 6.6. The first time I was accused of cheating I knew I was getting faster

Motor, ESC and battery from back to front has been good for me.
I had a first gen b4 which I raced till I got myself a rb5, which I raced till I got a rb6 in 2012 at $650!
I almost bought the ae b6 and I am delighted to get the rb6.6 instead. I've always enjoyed the kyosho cars for the fine fit and finish... But the pricing is killer!
I can understand why a lot of peeps prefer tlr or ae cos they are priced more economically. I believe the cars are well designed, but I like kyosho...
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Old 07-17-2016, 08:36 AM
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Originally Posted by yodace View Post
I am running on avtight indoor loose track. I set up the rb6 with a 3 gear transmission and a mixture of tebo's fastlane setup and reedy setups. With electrons. Buggys is loose everywhere ?
What's your rear track width? Is your battery sideways. Are you using McCune brace? Post your setup. This car make a ton of steering. Sometimes the rb6 can steer past what some can hold on to. Is it loose or does it rotate?
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Old 07-17-2016, 03:11 PM
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Just getting back into racing after a long absence, and I'm very interested in this car. If I needed to buy extra parts in case of breakage, what would you recommend? Any help on this is greatly appreciated, Dave.
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Old 07-17-2016, 03:39 PM
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Originally Posted by Twisterdave View Post
Just getting back into racing after a long absence, and I'm very interested in this car. If I needed to buy extra parts in case of breakage, what would you recommend? Any help on this is greatly appreciated, Dave.
I have 2 RB6's and my 11 year old son runs one of them, hard. A few things I've replaced, a few times.
Rear arms
Rear inner and outer hinge pins
Front arm mount
Front inner hinge pins
Wing mounts, bend easily.
Front hub carrier but it's rare.
Had a few bent rear shock shafts because they're on the back of the buggy so they take the hits.

I think once in a year and a half we've broken one front arm.

I would recommend,
Aluminum front arm mount
Aluminum rear arm mounts
Aluminum rear hubs
Aluminum wing mounts
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Old 07-17-2016, 04:05 PM
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oPAULo, thanks for the quick reply. I'll start making a list with the parts you suggested. Do you think a turn buckle kit for the rb6 will be all right for the newer car? I'm trying to get as much of the parts in as I can before the new car comes out.
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Old 07-17-2016, 04:28 PM
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Originally Posted by Twisterdave View Post
oPAULo, thanks for the quick reply. I'll start making a list with the parts you suggested. Do you think a turn buckle kit for the rb6 will be all right for the newer car? I'm trying to get as much of the parts in as I can before the new car comes out.
I don't think they changed the tie rods or ball cups. Ya have some extra ball cups too. I've never broken or bent a stock tie rod. Broke 2 titanuim tie rods and went back to stock.
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Old 07-17-2016, 05:57 PM
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Originally Posted by foampervert View Post
I had a first gen b4 which I raced till I got myself a rb5, which I raced till I got a rb6 in 2012 at $650!
I almost bought the ae b6 and I am delighted to get the rb6.6 instead. I've always enjoyed the kyosho cars for the fine fit and finish... But the pricing is killer!
I can understand why a lot of peeps prefer tlr or ae cos they are priced more economically. I believe the cars are well designed, but I like kyosho...
Just goes to show, you get what you pay for... My Kyosho racing started long ago and took a detour to keep up with sponsorship changes. I went from managing an on-road team to wrenching for an off-road team in the blink of an eye. When that faded away I went back to Kyosho because of the part quality and stayed off-road. Now the only things that break are just my fault.
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Old 07-18-2016, 07:11 AM
  #13421  
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I posted on FB as well but, it appears Tebo is running a 4 gear laydown tranny. I didn't see the option in the manual. I think this would be a nice setup option for med/high bite dirt, who want to run a laydown tranny. Hopefully more grip with a 4 gear vs. 3 gear.

Hopefully KYO will release it -- it might push me over the edge to try my first K-Car.
Attached Thumbnails Kyosho Ultima RB6 & RB6.6 Car Thread-tebo_4gear_laydown.jpg  
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Old 07-18-2016, 07:28 AM
  #13422  
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Originally Posted by skrichter View Post
I posted on FB as well but, it appears Tebo is running a 4 gear laydown tranny. I didn't see the option in the manual. I think this would be a nice setup option for med/high bite dirt, who want to run a laydown tranny. Hopefully more grip with a 4 gear vs. 3 gear.

Hopefully KYO will release it -- it might push me over the edge to try my first K-Car.
the kit DOES come with a 4 gear laydown tranny... there just isnt instructions to build one in the manual.

You'll quickly figure this one out, once you've bought the kit...
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Old 07-18-2016, 07:32 AM
  #13423  
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Originally Posted by oPAULo View Post
I have 2 RB6's and my 11 year old son runs one of them, hard. A few things I've replaced, a few times.
Rear arms
Rear inner and outer hinge pins
Front arm mount
Front inner hinge pins
Wing mounts, bend easily.
Front hub carrier but it's rare.
Had a few bent rear shock shafts because they're on the back of the buggy so they take the hits.

I think once in a year and a half we've broken one front arm.

I would recommend,
Aluminum front arm mount
Aluminum rear arm mounts
Aluminum rear hubs
Aluminum wing mounts
I like the Yaiba front suspension mounts the BEST! makes most sense, of all the aftermarket alu or brass mounts. Why cant hopup makers put in some brainwork when making hopups? instead of just making an alu or brass version of the original part...

after wrenching the rb5 for years, the yaiba front suspension mount was a huge and welcomed innovation I just had to transplant to to the rb6.
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Old 07-18-2016, 07:34 AM
  #13424  
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Originally Posted by foampervert View Post
the kit DOES come with a 4 gear laydown tranny... there just isnt instructions to build one in the manual.

You'll quickly figure this one out, once you've bought the kit...
It appears you could be right -- there are mold/bosses for what appears to allow multiple idler gears within the laydown case.
Attached Thumbnails Kyosho Ultima RB6 & RB6.6 Car Thread-rb6.6_laydown_mold.jpg  
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Old 07-18-2016, 04:07 PM
  #13425  
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Originally Posted by skrichter View Post
I posted on FB as well but, it appears Tebo is running a 4 gear laydown tranny. I didn't see the option in the manual. I think this would be a nice setup option for med/high bite dirt, who want to run a laydown tranny. Hopefully more grip with a 4 gear vs. 3 gear.

Hopefully KYO will release it -- it might push me over the edge to try my first K-Car.
Do it. You won't be disappointed. Best in the business.
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