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Old 12-21-2016, 08:46 AM   -   Wikipost
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 09-09-2013, 11:29 AM   #8116
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Quote:
Originally Posted by stiltskin View Post
Nice run Jason. I'm considering a mid motor swap but still have a few things I'd like to try rear motor. Your car looked good.

Thanks...set up is getting closer.
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Old 09-09-2013, 11:50 AM   #8117
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And me going to the Eastern states was different how? Oh I had 3 sets of mounted tires, very little practice on a track that was nowhere near as good as it would be a few hours later, and yeah, ONE RUN REARS?

and IRH has, OMG, wait for it.. practice days!!! free sat practice for registered sunday drivers
LOL practice!!!!!! WE TALKING BOUT PRACTICE????????

Then it becomes a 2 day race...and I spend even more money to finish last to said track rats.

Sorry man, as long as IRH is slicks, you won't see me there. We'll just have to agree to disagree Besides, there's plenty of other opportunities for you to try to beat me HA!
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Old 09-09-2013, 01:52 PM   #8118
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LOL practice!!!!!! WE TALKING BOUT PRACTICE????????

Then it becomes a 2 day race...and I spend even more money to finish last to said track rats.

Sorry man, as long as IRH is slicks, you won't see me there. We'll just have to agree to disagree Besides, there's plenty of other opportunities for you to try to beat me HA!
Like where?
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Old 09-09-2013, 01:54 PM   #8119
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I'll be up at the JC race in Mass in October, Ohio for Midwest Winter Champs in Jan, Motorama in Feb... who knows where in between
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Old 09-10-2013, 11:27 AM   #8120
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Just ordered me an RB6 and a Lazer. Ran a lazer and RB5 in the past but have been running AE most recently. Main reasons I switched back to Kyosho (because it certainly wasn't price) was just a bad taste in my mouth with AE lately and my desire to try and dial in a good modern mid motor platform on our local track.

I'm going to start off in mid motor with my saddles all the way back like Jared and team run when doing mid motor. I'm really looking forward to trying some various rear spring, down travel, roll center, and even sway bar options. Who knows how wrong I am or not, but I'm gonna try it
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Old 09-10-2013, 11:48 AM   #8121
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Who knows how wrong I am or not, but I'm gonna try it
Trying stuff is the fun part!
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Old 09-10-2013, 12:25 PM   #8122
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Originally Posted by Razathorn View Post
Just ordered me an RB6 and a Lazer. Ran a lazer and RB5 in the past but have been running AE most recently. Main reasons I switched back to Kyosho (because it certainly wasn't price) was just a bad taste in my mouth with AE lately and my desire to try and dial in a good modern mid motor platform on our local track.

I'm going to start off in mid motor with my saddles all the way back like Jared and team run when doing mid motor. I'm really looking forward to trying some various rear spring, down travel, roll center, and even sway bar options. Who knows how wrong I am or not, but I'm gonna try it
Look at the difference in droop....B4.2 has 1 limiter RB6 has zero and both are in outer hole of arm.

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Old 09-10-2013, 12:37 PM   #8123
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Originally Posted by Jason Snyder View Post
Look at the difference in droop....B4.2 has 1 limiter RB6 has zero and both are in outer hole of arm.

What eyelets are you running, I feel like my shock collars are only threaded down half as much as you are running, unless you're using non stock springs?
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Old 09-10-2013, 12:49 PM   #8124
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The car just runs little droop.. Look at the setups online @ petit.
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Old 09-10-2013, 01:12 PM   #8125
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Originally Posted by t8rtot View Post
The car just runs little droop.. Look at the setups online @ petit.
yeah I never felt like I needed more honestly.


@Razathorn ... sorry to hear about AE but cool to see ya with the Red Army. I think you'll like the cars a lot.
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Old 09-10-2013, 02:07 PM   #8126
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Quote:
Originally Posted by Jason Snyder View Post
Look at the difference in droop....B4.2 has 1 limiter RB6 has zero and both are in outer hole of arm.
Quote:
Originally Posted by Bob Barry View Post
yeah I never felt like I needed more honestly.
Jason, I echo Bob's comments. Every time I've added more droop to the car it's resulted in no noticeable lap time difference but just made it harder to drive. I typically run on a track with big jumps as well and my car bottoms out less than others.
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Old 09-10-2013, 04:26 PM   #8127
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Quote:
Originally Posted by Jason Snyder View Post
Look at the difference in droop....B4.2 has 1 limiter RB6 has zero and both are in outer hole of arm.
I always ran 3 limiters in the front of my b4.1 with big bores.

Front droop (and droop in general) is like the most ignored and simultaneously one of the most important settings on a 2wd buggy. Small changes in front droop have a dramatic effect on what you can get away with in the rear of the car because it directly controls how much weight transfers to the rear under acceleration. 1mm of reduced front droop can open up a whole new world of possibilities for running a lower rear roll center, softer spring, or lighter oils. What less droop gives up in terms of forgiveness in a 2wd buggy, it makes up for in allowing the rear of the car to be stable when the car is pushed.

Wayne
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Old 09-10-2013, 05:06 PM   #8128
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New paint
Attached Thumbnails
Kyosho Ultima RB6 & RB6.6 Car Thread-20130910_185812.jpg   Kyosho Ultima RB6 & RB6.6 Car Thread-20130910_185922.jpg  
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Old 09-10-2013, 05:41 PM   #8129
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New paint
That's the bomb, pop.
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Old 09-10-2013, 06:02 PM   #8130
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Quote:
Originally Posted by Razathorn View Post
I always ran 3 limiters in the front of my b4.1 with big bores.

Front droop (and droop in general) is like the most ignored and simultaneously one of the most important settings on a 2wd buggy. Small changes in front droop have a dramatic effect on what you can get away with in the rear of the car because it directly controls how much weight transfers to the rear under acceleration. 1mm of reduced front droop can open up a whole new world of possibilities for running a lower rear roll center, softer spring, or lighter oils. What less droop gives up in terms of forgiveness in a 2wd buggy, it makes up for in allowing the rear of the car to be stable when the car is pushed.

Wayne
I couldnt agree more....I only have 1 limiter in the shocks because a buddy of mine thats super fast and happens to club race with Maifield in AZ told me about this set up and its pretty damn good..........

I've always hovered between 2-3 front and 2-3 rear depending on how high the bite was.

I also have heard a couple of pro's mention that they prefer set ups that are a bit stiffer and have more droop in combination with softer tires when possible........
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