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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 ForumsThread Wiki: Kyosho Ultima RB6 & RB6.6 Car Thread
Please read: This is a community-maintained wiki post containing the most important information from this thread. You may edit the Wiki once you have been a member for 90 days and have made 90 posts.
 
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 11-20-2012, 11:12 AM
  #2701  
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Originally Posted by jpcopeland1
I will be there tomorrow as well. Want to go the 4 hole 1.3mm route.
Go for it (By it I mean the excellent ghea pistons for the k cars absolute has them with 2 buck shipping). Found it awesome vs the stocks for handling and the cars super reactive as well but pillowy on the rougher stuff. I run pink/gold with 425/375. This was for a 60 plus day though, will go lighter in the winter arena when its colder a month from now.
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Old 11-20-2012, 12:30 PM
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Originally Posted by jpcopeland1
Shurr Speed 17.5's. Geared 72/33. Use Associated Spur and slipper pads. Or wait for Triad system to come out. It should not be long now. I myself not being of their caliber of driver yet, did manage to place 3rd overall in qualifying in Intermediate Stock class this past weekend with an Orion Pro Stock 17.5 (2010 grey can) Motor. Was not slow at all.
Whats the part number for the AE spur and pads. PLEASE!!!
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Old 11-20-2012, 12:38 PM
  #2703  
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Originally Posted by Coach Townsend
Whats the part number for the AE spur and pads. PLEASE!!!
Dont use AE spurs.. use Kimbroughs. More true/round, and a fraction as loud.

http://www.amainhobbies.com/product_...ipper-Gear-69T
http://www.amainhobbies.com/product_...pper-Pad-B4-T4
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Old 11-20-2012, 12:46 PM
  #2704  
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Originally Posted by Cpt.America
Dont use AE spurs.. use Kimbroughs. More true/round, and a fraction as loud.

http://www.amainhobbies.com/product_...ipper-Gear-69T
http://www.amainhobbies.com/product_...pper-Pad-B4-T4
RW racing

RW Racing idler gears too
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Old 11-20-2012, 12:49 PM
  #2705  
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Originally Posted by Cpt.America
A) You aren't supposed to run grease in your gearbox.
B) does this grinding sound happen with the gearbox out of the car? or only when a pinion is running against your spur?
In the manual it says to add a little grease in the gear box, also the grinding is happening without a motor in the car yet.
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Old 11-20-2012, 01:06 PM
  #2706  
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Originally Posted by OnRDPassion
In the manual it says to add a little grease in the gear box, also the grinding is happening without a motor in the car yet.
Don't run grease in the gearbox.. a couple drops of bearing oil on the gears is about all you need. Grease will eventually coagulate and cause issues... it also increases drag.

Take a little video or something of this sound and see if you can get it on youtube or something... hard to tell at this point.
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Old 11-20-2012, 01:12 PM
  #2707  
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I never run anything on my K Gears and have never had a problem. Still on the same original build now 2 months old. Smooth as glass still.
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Old 11-20-2012, 01:15 PM
  #2708  
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Who has the best price on these kits?
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Old 11-20-2012, 01:15 PM
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Default Servo and balance questions.
I have a KO Propo RSone10 and an Orion VDS-1409 servo. When I was using the Orion WTS battery and the KO Propo battery my balance was good. Since switching to the short Lipo, the car was not the same as the WST pack wit it. I put in a full size Orion servo and it's back to being good. I don't really want to get rid of the KO Propo servo because I really like it, but I don't want to throw in tons of weight in my car either to get the weight bias correct. Someone tell me what to do.
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Old 11-20-2012, 01:18 PM
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Originally Posted by SpeedFreak162
I've been running mine in 17.5 blinky for 2 months now and I absolutely love it. The weight doesn't seem to be a hindrance IMO though logic says it should but I even run a full stick pack instead of a shorty. My lap times are right there with guys running B4s, 22s, and RB5s. (Though my own consistency isn't ) run both tight and open indoor tracks and had a few runs outdoors too. I just love my RB6 that's all I need to say

"Ducky"
Do you guys have a setup for the 17.5, I ran mine for the first time at the AZ state championships and couldnt get it to not push, Also it was hard to get it to not bottom out on mid size jumps. I had mostly kit setup with Tebo's shock positions and ball stud placement, stock pistons, pink front gold rear 35wt in front 37.5 in rear, dry track (blue groove) i will mainly be driving an outdoor watered track. Thanks, i have an RB5 SP2 and am leaning on going back to it but im sure the 6 is better just need to set it up better. THX
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Old 11-20-2012, 01:34 PM
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Originally Posted by OnRDPassion
In the manual it says to add a little grease in the gear box, also the grinding is happening without a motor in the car yet.
If you run grease in the transmission case, it needs to be cleaned regularly. I suggest running it dry, or just a couple drops of 50,000 diff fluid. The diff fluid will make it quieter, and not muck up as bad as grease. Just a drop or two works great.
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Old 11-20-2012, 02:37 PM
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Originally Posted by jpcopeland1
I have a KO Propo RSone10 and an Orion VDS-1409 servo. When I was using the Orion WTS battery and the KO Propo battery my balance was good. Since switching to the short Lipo, the car was not the same as the WST pack wit it. I put in a full size Orion servo and it's back to being good. I don't really want to get rid of the KO Propo servo because I really like it, but I don't want to throw in tons of weight in my car either to get the weight bias correct. Someone tell me what to do.
Isn't the weight difference between a full size and a short servo about 10 or 15g?

Mount the shorty forwards, stick 10g onto the servo and put your transponder on top of that :P
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Old 11-20-2012, 02:39 PM
  #2713  
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Hi everyone.

Has anyone used the JC concepts B4 machined spur gears?

http://www.jconcepts.net/store/index...roducts_id=513

What are your thoughts versus the kimborough?

Thanks,
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Old 11-20-2012, 03:00 PM
  #2714  
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Originally Posted by Electrolabs
Hi everyone.

Has anyone used the JC concepts B4 machined spur gears?

http://www.jconcepts.net/store/index...roducts_id=513

What are your thoughts versus the kimborough?

Thanks,
Haven't tried them, but they look pretty good. FYI the kimbroughs are cheaper, and are flawless.
(EDIT: no, I don't run or work for kimbrough... im just passionate about the products I find that excel)
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Old 11-20-2012, 03:02 PM
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Originally Posted by Cpt.America
Haven't tried them, but they look pretty good. FYI the kimbroughs are cheaper, and are flawless.
Thanks,
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