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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 02-28-2013, 10:14 PM
  #5431  
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Originally Posted by Cpt.America
Ride height gauge.. under the front.
And behind the front wheels. If you do it straight on sometimes the bumper hangs lower than the chassis
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Old 02-28-2013, 11:11 PM
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What is removing the .5mm shim I have between the pivot block and chassis supposed to do?
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Old 03-01-2013, 12:36 AM
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Lowers Roll center
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Old 03-01-2013, 07:12 AM
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Sorry Kyosho calls it a front suspension mount block.
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Old 03-01-2013, 07:55 AM
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Does anyone know the width difference between the RF and RF2 configurations?
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Old 03-01-2013, 08:43 AM
  #5436  
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The RF2 makes the arms sit out a little wider. Helps free up the rear end and make it more stable.
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Old 03-01-2013, 08:51 AM
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Originally Posted by seth556
The RF2 makes the arms sit out a little wider. Helps free up the rear end and make it more stable.
Yeah, but I think he's asking how MUCH wider the wide hangers are. Mike, without measuring (i don't have two sets off a car at the moment)... I would guess (dont' quote me) 1.5mm wider per side (3mm total) . I will be doing some work on my cars tonight, id be happy to measure later.
Last edited by Cpt.America; 03-01-2013 at 09:18 AM.
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Old 03-01-2013, 08:53 AM
  #5438  
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this thread makes my head spin
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Old 03-01-2013, 09:01 AM
  #5439  
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Happy birthday to me, I bought the ghea pistons 4 hole 1.3 and some spare parts. And the wife got me a new tekin gen2 for stock! Can't wait for the weekend now . Weeee
Any body using the tekin? Did you add timing on the can at all?
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Old 03-01-2013, 09:36 AM
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Originally Posted by Cpt.America
Yeah, but I think he's asking how MUCH wider the wide hangers are. Mike, without measuring (i don't have two sets off a car at the moment)... I would guess (dont' quote me) 1.5mm wider per side (3mm total) . I will be doing some work on my cars tonight, id be happy to measure later.
Ok, I will measure them as well, just curious if anyone had yet. I think most will change the blocks and not change the link length, which I feel will has at least as much of an impact on handling as the width change will.
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Old 03-01-2013, 09:51 AM
  #5441  
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Originally Posted by MikeXray
Ok, I will measure them as well, just curious if anyone had yet. I think most will change the blocks and not change the link length, which I feel will has at least as much of an impact on handling as the width change will.
link length? The camber tie-rod? Yeah, if you go from the narrow blocks to the wide blocks and don't re-adjust camber, you will probably be looking at like -6 camber
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Old 03-01-2013, 09:55 AM
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Originally Posted by ryanpatrickgore
Happy birthday to me, I bought the ghea pistons 4 hole 1.3 and some spare parts. And the wife got me a new tekin gen2 for stock! Can't wait for the weekend now . Weeee
Any body using the tekin? Did you add timing on the can at all?
Gen2 17.5? Great motor! Set the timing on the can to 30deg. and gear 69/33 to start with.
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Old 03-01-2013, 10:31 AM
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Originally Posted by Cpt.America
link length? The camber tie-rod? Yeah, if you go from the narrow blocks to the wide blocks and don't re-adjust camber, you will probably be looking at like -6 camber
Yes, and making this adjustment makes your camber length longer or shorter, changing your roll center, camber gain, etc. If it's .5mm at each side, probably not a big impact, if it's 1.5+mm that equivalent to one of the offset holes on the option hubs. I just wonder if the shorter link achieved when going wider is a bigger influence on the steering gained than the actual width. (could be tested by shimming at the hex instead).
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Old 03-01-2013, 12:42 PM
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Originally Posted by fullsyzz
Gen2 17.5? Great motor! Set the timing on the can to 30deg. and gear 69/33 to start with.
Great thanks or the heads up. Right now I'm 31/69 on my trinity. With 5 extra degrees.
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Old 03-01-2013, 01:45 PM
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Hi guys got a gearing question? I will be running Team Orion 13.5T motor in my rb6, someone told me to run 26/75 on the gearing but I see the best I can do is 25/76. He mentioned to get a 27 tooth pinion gear as well but I dont see that Kyosho makes them. Any advise or what would you guys run on a tight indoor track?
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