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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 11-19-2012, 07:04 AM
  #2656  
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Does anyone have a good gearing for a 17.5 no esc timing (blinky) setting? I read 43/88 but that seems insane. Anyone?
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Old 11-19-2012, 07:12 AM
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You guys going to start running 17.5? 69/32 is a good place to start. What motor?
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Old 11-19-2012, 07:12 AM
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Originally Posted by carbons2k
Does anyone have a good gearing for a 17.5 no esc timing (blinky) setting? I read 43/88 but that seems insane. Anyone?
should be the same as your WC..

with the stock spur i used 28/30, some gearing charts say 28-30/76

others with chime in
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Old 11-19-2012, 08:41 AM
  #2659  
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Use a Kimbrough 69 tooth spur gear and the largest pinion you can put on. Or do the Losi thing with a Kevlar 70 tooth spur gear, and the largest pinion that will fit, tailor to your track needs always. And check motor temps after 7minutes.
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Old 11-19-2012, 09:35 AM
  #2660  
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I run a 72/33 with the AE spur gear and pads. Schuur Speed motor and it has 40 degrees of timing.
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Old 11-19-2012, 12:27 PM
  #2661  
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How come so much timing?
What tracks are you going to?

Originally Posted by lbckevin
I run a 72/33 with the AE spur gear and pads. Schuur Speed motor and it has 40 degrees of timing.
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Old 11-19-2012, 12:30 PM
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Originally Posted by t0p_sh0tta
You guys going to start running 17.5? 69/32 is a good place to start. What motor?
The track isn't, but I am. There's no determination between stock and mod classes besides 1 lap. So, I'm going to rce to run stock for the gobbler an keeping the motor in my car.
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Old 11-19-2012, 12:34 PM
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Originally Posted by toast.
How come so much timing?
What tracks are you going to?
I run expert stock at West Coast and run stock buggy at OCRC.
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Old 11-19-2012, 12:34 PM
  #2664  
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Ahhh, ok. I ran 17.5 in the 13.5 class on the old layout a few times. You should be golden, aside from that really fast double in the middle. Good luck.
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Old 11-19-2012, 02:09 PM
  #2665  
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Are the BB pistons made of delrin or teflon? I drilled some K blanks but don't have time to order another set for the weekend. I am just going to glue some holes up on my 6 hole pistons if they are delrin. Thx.
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Old 11-19-2012, 02:23 PM
  #2666  
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does anybody know if rb6 can use a full-size long battery in mid-motor configeration?
and how's it compare to the b4.1 +8 and dex210 for indoor track racing(us style)?
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Old 11-19-2012, 03:01 PM
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Originally Posted by lbckevin
The dented chassis does not hurt performance at all. Its purely cosmetic.
Agree it's cosmetic, but many buy Kyosho for their high quality and fit & finish. I just hope Kyosho America steps up and takes care of this from a customer service stand point. If some of these chassis' are out of spec and customers are not happy with the denting, then the least they can do is own it and take care of us with a replacement. I don't think Kyosho is denying that chassis' are out of spec or at least should not be denting as normal wear and tear, so let's see how they respond....
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Old 11-19-2012, 03:15 PM
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Originally Posted by flybyublue
Agree it's cosmetic, but many buy Kyosho for their high quality and fit & finish. I just hope Kyosho America steps up and takes care of this from a customer service stand point. If some of these chassis' are out of spec and customers are not happy with the denting, then the least they can do is own it and take care of us with a replacement. I don't think Kyosho is denying that chassis' are out of spec or at least should not be denting as normal wear and tear, so let's see how they respond....
I am a lucky one. No issues and I have beat mine to hell.
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Old 11-19-2012, 03:32 PM
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Originally Posted by goin2drt
I am a lucky one. No issues and I have beat mine to hell.
Glad to hear that and I'm sure that's the case for most. All the more reason for Kyosho to step up and take care of the few dented chassis' like mine...
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Old 11-19-2012, 05:20 PM
  #2670  
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Originally Posted by Yeti AS3
Are the BB pistons made of delrin or teflon? I drilled some K blanks but don't have time to order another set for the weekend. I am just going to glue some holes up on my 6 hole pistons if they are delrin. Thx.
Just buy a set of losi BB pistons and you're good to go. You get a full set of 54s, 55s, 56s, and 57s... and they are cheap and work perfect. Currently running 55s all around pink/32 front, red or gold/25 rear.
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