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R/C Tech Forums Thread Wiki: Kyosho Ultima RB6 & RB6.6 Car Thread
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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 11-01-2012, 01:22 AM   #2281
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Default Servo saver

Anyone managed to fit a servo saver to the car?
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Old 11-01-2012, 01:47 AM   #2282
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Quote:
Originally Posted by gelshocker View Post
When you mention WC arms, these are the 2-hole UM521 right? The 1-hole UM521-1 are the SP2 arms.

Going to stock up spares, are the stock front towers holding up? Thanks,
have taken many hard tumbles at West Coast RC trying to get the triple down in stock, and the front towers have been money. No need for an aftermarket part.
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Old 11-01-2012, 01:47 AM   #2283
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Anyone managed to fit a servo saver to the car?
With servos being so strong, and tough no need for a servo saver anymore.
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Old 11-01-2012, 03:00 AM   #2284
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If any of you guys want a xtra set of shocks pm me. I have an xtra set(from WC) Im gonna part with(I dont need 3 set) They are new, havent even been built. Might be able to do some horse trading. I need some stuff for my 6, blue spacers, slipper gears, and such. Thought I would offer them up here before I put it in the F/S thread
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Old 11-01-2012, 06:45 AM   #2285
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For those of you who have went from plastic rear hubs to aluminum did you notice a difference in the way the car handled?
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Old 11-01-2012, 07:42 AM   #2286
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will 22 wheels fit this car?
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Old 11-01-2012, 08:08 AM   #2287
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Originally Posted by hlb14 View Post
will 22 wheels fit this car?
nope
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Old 11-01-2012, 08:09 AM   #2288
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For those of you who have went from plastic rear hubs to aluminum did you notice a difference in the way the car handled?
I suspect I lost a bit of rear grip for some reason...
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Old 11-01-2012, 08:18 AM   #2289
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Originally Posted by jpcopeland1 View Post
With Gullwing or WC arms? I am thinking about trying the wide suspension mounts with the WC arms, or flipping around the gullwing arms and using the single hole that is there with RF2 suspension blocks. I agree this car has MAJOR amounts of steering, I can turn inside of B4.1's like they are not even there, have won a couple of races doing this. And have gotten a bunch of s**t from AE drivers because of it. The car is phenomenal in that respect, but in truth I could use dialing down a bit of steering so I am trying the 4 inserts in the caster blocks to tame the beast a bit. If only Losi could dream of having a car that is as long as the 22 and steers like an Associated. lol.... they got the 22 all wrong, just like the last few cars before.
Still using the gullwings. I dont think I'll go back to the wc arms.
I'm on a dirt track though. Sometimes loose, sometimes groved...


Question: reduce steering throw vs reduce steering via setup?
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Old 11-01-2012, 08:25 AM   #2290
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Anyone tried the gulwings on the FS2?

So what people breaking?
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Old 11-01-2012, 08:41 AM   #2291
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My debut with the RB6 has been delayed due to my lack of ball diff building and slipper setting skills. I've watched the how to video that's stickied on this forum but can't seem to replicate the results. I've now completely roached my stock ball diff (on the bench) and will need to start over. I know this may make the purist cringe but what do you guys think of running a gear diff? Keep in mind that I'm a rookie so uber performance (although desired eventually) is not my top priority ATM. I'm all for keeping at it until the ball diff/slipper is setup correctly. Buuut... I'd really like to drive my buggy on the track. The gear diff seems to support my K.I.S.S philosophy. I have parts list for the RTR SC gear diff, I'm hoping that it would fit in the RB6 transmission case.
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Old 11-01-2012, 08:52 AM   #2292
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Originally Posted by John.C View Post
My debut with the RB6 has been delayed due to my lack of ball diff building and slipper setting skills. I've watched the how to video that's stickied on this forum but can't seem to replicate the results. I've now completely roached my stock ball diff (on the bench) and will need to start over. I know this may make the purist cringe but what do you guys think of running a gear diff? Keep in mind that I'm a rookie so uber performance (although desired eventually) is not my top priority ATM. I'm all for keeping at it until the ball diff/slipper is setup correctly. Buuut... I'd really like to drive my buggy on the track. The gear diff seems to support my K.I.S.S philosophy. I have parts list for the RTR SC gear diff, I'm hoping that it would fit in the RB6 transmission case.
The ball diff could be a little difficult at first but once you know how to build them then they are easy. I would just bring it with you to your local track and ask someone if they can show you how to build it. Also ask them if they can go over your car before your maiden voyage. Good luck
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Old 11-01-2012, 09:00 AM   #2293
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Originally Posted by SAGISI View Post
The ball diff could be a little difficult at first but once you know how to build them then they are easy. I would just bring it with you to your local track and ask someone if they can show you how to build it. Also ask them if they can go over your car before your maiden voyage. Good luck
+1 Find another Kyosho owner or a factory driver to spend 10 minutes going over things and you should be set.

Good luck and have fun.
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Old 11-01-2012, 09:12 AM   #2294
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Quote:
Originally Posted by mikeyscott View Post
Anyone tried the gulwings on the FS2?

So what people breaking?
No. There is no location for the anti roll bar to mount.
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Old 11-01-2012, 09:12 AM   #2295
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Default New JConcepts RB6 Finisher Body

As a proud father, I must post that JConcepts has released it's latest Finisher Body for the RB6 and choose my 13 year old son, Landen Lewis who drives for them, his body scheme and stickers for it's press release.



http://blog.jconcepts.net/2012/11/jc...ng/#more-87143
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