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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 12-22-2014, 07:22 AM
  #11341  
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Just wait for wiring version 3.0

And yes my RX is in my servo.. going to 3D print a case for it.. the RX had been modified a bit and I make a tiny board to move stuff and stuffed it the servo..
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Old 12-22-2014, 07:44 AM
  #11342  
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Amazing install! Look forward to seeing V3!

RogerM, sounds good! Hope we see a new high grip gearbox for the RB6, it's an amazing platform for 90% of surfaces but hopefully with this gearbox change it can take the fight to the front motor 2wd's
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Old 12-22-2014, 09:11 AM
  #11343  
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Originally Posted by phillypete
The MIP axles are long enough to use any aftermarket wheels with the standard locking nuts.

Also Durango makes a low profile serrated nut that will work with non KYO wheels on stock axles. I have been using them for the past month without issue.

As far as my spur gear issue. It appears the failures are related to the motor slipping out of position. I have sanded the motor plate in the mounting area with a 120grit sand paper to give the mounting bolts more friction to hold onto. So far it seems to be helping.
Thank you so much.. At least now I can use all my old wheels that fitted the 22 back.. Cheers!!
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Old 12-22-2014, 09:15 AM
  #11344  
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Originally Posted by katoom007
Ok another question. is it better to run shorty batterys or saddle packs??? thanks
Shorty packs are the way to go.. saddle are heavy.. I run 3200mah protek and I put weights where I want and need..
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Old 12-22-2014, 10:31 AM
  #11345  
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THanks imarky
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Old 12-22-2014, 11:35 AM
  #11346  
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Originally Posted by katoom007
Ok another question. is it better to run shorty batterys or saddle packs??? thanks
It depends. I went from shorty to saddle packs in the full rear position to gain a bit more forward bite. The saddles definitely locked in the rear but it feels like I lost the nimbleness from the shorty packs. Saddles makes it easier to drive consistently but have lost some of the responsiveness.
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Old 12-22-2014, 01:17 PM
  #11347  
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Originally Posted by Vincent_Diesel
It depends. I went from shorty to saddle packs in the full rear position to gain a bit more forward bite. The saddles definitely locked in the rear but it feels like I lost the nimbleness from the shorty packs. Saddles makes it easier to drive consistently but have lost some of the responsiveness.
seems to be a huge weight difference. almost 70 grams.
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Old 12-22-2014, 03:52 PM
  #11348  
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Saddle will also exaggerate any condition you are feeling.
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Old 12-23-2014, 04:40 AM
  #11349  
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Originally Posted by Headling
Amazing install! Look forward to seeing V3!

RogerM, sounds good! Hope we see a new high grip gearbox for the RB6, it's an amazing platform for 90% of surfaces but hopefully with this gearbox change it can take the fight to the front motor 2wd's
Testing has been fairly limited so far (not enough high bite tracks near me running meetings at the moment) but hopefully will pick up in the new year.

So far it is very quick, definitely more so than my previous forward motor car, and quicker than the RB6 on high bite stuff.

Bolts on to an otherwise stock RB6 chassis too
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Old 12-23-2014, 05:13 AM
  #11350  
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[IMG][/IMG]
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Old 12-23-2014, 05:26 AM
  #11351  
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Are there any companies that do cut gears for the rb6???
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Old 12-23-2014, 05:54 AM
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Originally Posted by Potoczak
Are there any companies that do cut gears for the rb6???
I'm pretty sure CB does.

http://shop.cbscustomrc.com/

https://www.facebook.com/CBsCustomRC
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Old 12-23-2014, 05:59 AM
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Originally Posted by Jason Snyder
Thanks Jason.
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Old 12-23-2014, 02:23 PM
  #11354  
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Which Losi spring is equivalent to the Kyosho Pink? My buggy I bought came with Losi Silvers up front. I will be running indoors on high bite clay.
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Old 12-23-2014, 04:15 PM
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Originally Posted by beedee
Which Losi spring is equivalent to the Kyosho Pink? My buggy I bought came with Losi Silvers up front. I will be running indoors on high bite clay.
Spring chart with the rates
http://www.rctech.net/forum/attachme...comparison.pdf
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