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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 07-13-2014, 06:48 PM   #10591
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No I did not try running the diff tighter but I did loosen it some and it didn't seem any worse being loosened but I always seem to have to much steering so moving the battery back may help that also
Hmm try it a smidge tighter. With more weight in the back, you will get a pendulum effect as well which is not so good. I would start with the cody kind mid motor ocrc sheet and go from there if I were you (white springs all around pistons might be a bit hard to get locally, the 1.5x2, avid sells a set of 4 on amain).
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Old 07-13-2014, 07:01 PM   #10592
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I would really suggest people try this car with the battery all the way back using this

http://www.petitrc.com/setup/kyosho/...20131122/1.jpg
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Old 07-13-2014, 07:07 PM   #10593
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I would really suggest people try this car with the battery all the way back using this

http://www.petitrc.com/setup/kyosho/...20131122/1.jpg
That pic looks like what I was thinking of trying what's your experience with this setup?
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Old 07-13-2014, 07:32 PM   #10594
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Originally Posted by K_King View Post
I would really suggest people try this car with the battery all the way back using this

http://www.petitrc.com/setup/kyosho/...20131122/1.jpg


Thats close to what I run. Works good
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Old 07-13-2014, 10:11 PM   #10595
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Quote:
Originally Posted by K_King View Post
I would really suggest people try this car with the battery all the way back using this

http://www.petitrc.com/setup/kyosho/...20131122/1.jpg

did similar with the rt6 backstop, rb5 posts (re-drill and countersink new hole locations) and battery strap with a thin piece of foam servo- taped to the esc, then receiver then low pro servo:
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Kyosho Ultima RB6 & RB6.6 Car Thread-photo-1.jpg  

Last edited by glenng; 07-13-2014 at 10:13 PM. Reason: add more info
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Old 07-13-2014, 10:27 PM   #10596
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I would really suggest people try this car with the battery all the way back using this

http://www.petitrc.com/setup/kyosho/...20131122/1.jpg
You liking this better then esc in front of the motor? I run my setup like this too but I just jam a battery pad between motor and battery. The stopper would be better maybe i'll pick one up.
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Old 07-13-2014, 10:32 PM   #10597
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I'm running mid motor was running pink springs front gold rear 30wt front and rear with 1.6 2 hole in the front 1.7 2 hole rear with the esc right in front of the motor and shorty battery I'm having trouble with the rear of the car getting loose and jumping sideways mid out of corners and on hard acceleration be for jumps thinking of putting esc in front of battery and moving battery all the way back against motor thoughts anyone?
I'm running 4x1.3 all the way around with 27.5 pink front/22.5 white rear with 10 grams on the rear bulkhead. I like it better than the battery on the motor setup. Also running 0 and 0 on the anti squat
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Old 07-13-2014, 11:11 PM   #10598
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You liking this better then esc in front of the motor? I run my setup like this too but I just jam a battery pad between motor and battery. The stopper would be better maybe i'll pick one up.
Yes so far I am a lot more consistent with it. The car is a lot more planted. My Rear weight went from 61 to 63% which is huge. My buddy usually hates my cars because his push like a dump truck, but with what I'm working on it's real nice and Im still breaking in tires. I actually went back to middle/pink springs and may try golds now. May be too soft back there but right now it drives really nice.
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Old 07-15-2014, 03:05 AM   #10599
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Is there a setup i can use just using the stock kit stuff for a mm setup on a rough/loose track!? Just wanting to give it a go, my rm is working well just interested in the mm side of things. Thanks.
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Old 07-15-2014, 06:09 AM   #10600
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I've given my MM a go at our track and personally I felt it has potential but to get it there I think it needs those few extra bits that has been talked about or in the set ups posted
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Old 07-15-2014, 07:17 AM   #10601
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MM doesn't really need anything special. Get some extra springs for tuning. I don't have any hopups on my car just the alum hinge pin holders for strength.
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Old 07-15-2014, 08:33 AM   #10602
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For this Kit this is a must have hopup UMW705, UMW706 & UMW707
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Old 07-15-2014, 08:42 AM   #10603
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We just had our Roar regionals and had a podium sweep with all RB6's. There were 6 of the 10 in the A!

All rear motor as the track was loamy and loose.

Here's the article with pics of the winning ride click here
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Old 07-15-2014, 02:44 PM   #10604
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What's everyone's opinion on the speed passion revention pro 1.1 I am thinking of replacing my tekin stuff with them?
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Old 07-15-2014, 03:01 PM   #10605
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What's everyone's opinion on the speed passion revention pro 1.1 I am thinking of replacing my tekin stuff with them?
There was some complaining initially when the 1.1 first came out that it would cog. I don't know if that was fixed or not. I have a couple Rev Pro 1.0's and they work awesome. I would maybe just get the 1.0 but confirm first in the SP thread.

My recent builds including my RB6 have been with Viper VTX10 ESC's. I really like this ESC so far. Maybe check those out while your at it.
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