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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 12-13-2013, 02:44 PM   #8941
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Originally Posted by nickdawg18 View Post
i'm running the stock pistons with 30f 25r losi oils.
Bro, my suggestion is.....you are running way too light with 5 hole pistons. If you're running a shorty, 32.5/27.5 would probably be the lowest I'd go. If running a saddle or full pack I'd do 35/30.

5 hole pistons don't have a lot of pack either like hommie said. People around me are running 4 x1.3 (very close to a 55 piston) or 2x1.6. If you do use these pistons...then you can run closer to your oils. I'd still start with 32.5/30 and play around with it until you get the car to feel like you want.
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Old 12-13-2013, 02:53 PM   #8942
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Originally Posted by skengines View Post
I felt the stock pistons didn't have enough pack. I think a lot of guy run the GHEA 4x1.3 pistons.

I have an extra set of AE 4X1.3 pistons if you're interested nickdawg.
heck ya man, pm me a price and ur paypal
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Old 12-13-2013, 02:58 PM   #8943
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Originally Posted by sir_thomas View Post
Bro, my suggestion is.....you are running way too light with 5 hole pistons. If you're running a shorty, 32.5/27.5 would probably be the lowest I'd go. If running a saddle or full pack I'd do 35/30.

5 hole pistons don't have a lot of pack either like hommie said. People around me are running 4 x1.3 (very close to a 55 piston) or 2x1.6. If you do use these pistons...then you can run closer to your oils. I'd still start with 32.5/30 and play around with it until you get the car to feel like you want.
hmmm, well i am running a shorty pack. i dont have anything between 30 and 35. I can drain them tonight and go 35f and 30r. think that'll help?
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Old 12-13-2013, 03:42 PM   #8944
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hmmm, well i am running a shorty pack. i dont have anything between 30 and 35. I can drain them tonight and go 35f and 30r. think that'll help?
It's winter time...it might be thick! Just have to try and see I guess. Oil change only takes 15 mins....not too bad. If you do, run the normal washers under the ballstuds (typically 1mm all around) as the car will roll a lot less with this shock package.
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Old 12-13-2013, 04:12 PM   #8945
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Originally Posted by nickdawg18 View Post
hmmm, well i am running a shorty pack. i dont have anything between 30 and 35. I can drain them tonight and go 35f and 30r. think that'll help?
I'm running a shorty with 35F and 30R indoors (high traction clay) with narrow rear suspension hangers and gullwing arms. It's still rolling a little too much in the rear so going to try the UM-521-1 arms the next time out before playing with roll center. If you're running the wide rear hangers, 35/30 might be a little too thick though.
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Old 12-13-2013, 04:53 PM   #8946
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No love for the ready set.....lmao
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Old 12-13-2013, 05:19 PM   #8947
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No love for the ready set.....lmao
I don't think anyone's actually seen them yet, curious of it's quality, I'd take a used $300 roller over that most likely.
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Old 12-13-2013, 05:21 PM   #8948
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No love for the ready set.....lmao
That's alot of price difference, scared to think where they saved that much money. Kyosho is known for the best shocks in the game for their velvets, and pretty much the exact opposite for their plastic shocks, you'll hate them with a passion as they leak all the time and are easy to break. Look into how much a set of the good bigbore shocks run and you won't be far off on price of the kit. The motor speed control combo will be useless if you run a spec class like stock or super stock buggy, and if you ran mod that motor would be to slow. One can only imagine what else they went cheap with to get it $150 lower then the kit and still include electronics...
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Old 12-14-2013, 02:30 AM   #8949
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been running my rb6 mm lately just changed to running the speedo in front with the rx right beside it..so far I am liking the change but I want to lock in the rear a bit more..will be testing some changes again hopefully at the end of next week
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Old 12-14-2013, 08:49 AM   #8950
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What front tires for carpet would you guys recommend? I ordered a set of ProLine pinpoint rear and wedge front, but I'd like a front tire that doesn't require cutting a rib off the wheel as well as using standard AKA red closed cell inserts. I liked the feel on my other buggy.

Suggestions?
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Old 12-14-2013, 09:39 AM   #8951
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Run exactly what the fast guys in mod are running, thats your best bet.
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Old 12-14-2013, 02:24 PM   #8952
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Anyone having issues with their shocks leaking ? My front bottom seals leak..not just a little..I built them per kit instructions..green slime..I have never had so many problems with shocks..put new O rings in also and they still leak...
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Old 12-14-2013, 02:48 PM   #8953
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Haven't had any issues yet, been a few months on the 6 and never really had any leakages for the last few years with my 5. Did you miss the oring that goes in the small screw cap for the shock seal orings?
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Old 12-14-2013, 03:07 PM   #8954
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I had this problem too.



Quote:
Originally Posted by Oasis View Post
Anyone having issues with their shocks leaking ? My front bottom seals leak..not just a little..I built them per kit instructions..green slime..I have never had so many problems with shocks..put new O rings in also and they still leak...
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Old 12-14-2013, 03:57 PM   #8955
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I had this problem too.
Operator error...
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