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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 11-09-2012, 10:39 AM
  #2491  
NTR
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Originally Posted by wrightcs77
Bigger spur and bigger pinion will move the motor further back, increasing rear weight bias and improving traction........in theory.

Basically taking one of the heaviest parts of the car (the motor) and hanging it further behind the rear axle.
I wouldnt determine my gearing based off wanting to move more weight back, i can do that other ways. I would gear for the best combo of temps/speed/torque or acceleration.

Jconcepts makes some really nice spur gears, so if you dont want to run associated spurs or kimbrough ones, i recommend the jconcepts ones over the kyosho spurs but you will need to change slipper pads
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Old 11-09-2012, 10:43 AM
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I only run the jconcepts losi silent spurs with the losi garodiscs and wc slipper. Works like a charm. Used to have the AE pads but they wont work well with K vented plates.
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Old 11-09-2012, 10:52 AM
  #2493  
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Originally Posted by fullsyzz
That's probably a 64 pitch setup.
You're right. I just looked at the "comment" section of the setup sheet.
(one of Jason Dias' setup sheets and I do appreciate him sharing his setup sheets with us)


Originally Posted by NTR
Can you link the setup sheet?
http://www.petitrc.com/setup/kyosho/..._WCRC20121010/

Thanks again for everyone's contribution to this thread.


Allen
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Old 11-09-2012, 11:07 AM
  #2494  
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Originally Posted by NTR
I wouldnt determine my gearing based off wanting to move more weight back, i can do that other ways. I would gear for the best combo of temps/speed/torque or acceleration.
Proper gearing and motor placement are not mutually exclusive. You can achieve whatever gear ratio you want with just about any motor position. They are apples and oranges. Man, I could go for an apple about now.
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Old 11-09-2012, 11:09 AM
  #2495  
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Originally Posted by aloksatoor
I only run the jconcepts losi silent spurs with the losi garodiscs and wc slipper. Works like a charm. Used to have the AE pads but they wont work well with K vented plates.
I use Kimbrough spur gears and standard AE pads and they work flawlessly.
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Old 11-09-2012, 11:22 AM
  #2496  
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Does anyone happen to know if Avid is working on a Triad Slipper clutch for the RB6?


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Old 11-09-2012, 11:23 AM
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Originally Posted by Cpt.America
I use Kimbrough spur gears and standard AE pads and they work flawlessly.
On the hex ae pads the glaze is just there in a circle on the edges. The losi slipper pads are just that, a ring so I just like it better. Plus they are machined (and I am a sucker for cnced stuff) so a little quieter than the kimboroughs I had. For stock the AE goes a lot lower than the losi options though.
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Old 11-09-2012, 11:24 AM
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Originally Posted by abinder
Does anyone happen to know if Avid is working on a Triad Slipper clutch for the RB6?


Allen
Yep I hope they come out by next week. Thats the last I heard on the avid thread from kdub.
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Old 11-09-2012, 11:27 AM
  #2499  
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Originally Posted by abinder
Does anyone happen to know if Avid is working on a Triad Slipper clutch for the RB6?


Allen
Yes, it's ready for release in the next week to 10 days. We have a new topshaft that has smaller flats to fit the existing Triad slipper kits. The adjustment nut changes to a 5.5mm hex M3 nut.
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Old 11-09-2012, 12:11 PM
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Originally Posted by aloksatoor
Yep I hope they come out by next week. Thats the last I heard on the avid thread from kdub.
Originally Posted by kdub
Yes, it's ready for release in the next week to 10 days. We have a new topshaft that has smaller flats to fit the existing Triad slipper kits. The adjustment nut changes to a 5.5mm hex M3 nut.
Thanks for the info!


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Old 11-09-2012, 03:42 PM
  #2501  
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Hey guys, I have been running my rb6 for two weeks and let me tell you after driving a losi for months. I cant tell you how much better it is... I'm still playing with the setup on it but with the help of derek at kyosho usa it getting better... I'm currently running cody tuner hot rod hobbies setup. I was told that it works really good on clay tracks too.
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Old 11-09-2012, 03:45 PM
  #2502  
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oh ya!!!! I was running on the tlr 22 1.6x2hole ae pistons with 30/25 losi oil. I wanted to see if anyone has tried it on the 6 yet.
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Old 11-09-2012, 10:14 PM
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I have a question about building the diff. it appears that the diff rings have a flat side and a rounded side. which side should touch the balls?
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Old 11-09-2012, 10:47 PM
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Originally Posted by rcnewb123
I have a question about building the diff. it appears that the diff rings have a flat side and a rounded side. which side should touch the balls?
The rounded one...it's in the manual
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Old 11-10-2012, 06:58 AM
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Hey guys those of you using RSx one10, do you use both 1mm and 2mm shin on the servo mounts (it measures 13.8mm so would merit both shims according to manual). Seems kinda tight though, servo won't lay flat. I think just 2mm is enough? Thanks,
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