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Kyosho Ultima RB6 & RB6.6 Car Thread

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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 Forums Thread 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 10-04-2013, 05:48 AM
  #8356  
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Hey guys,

I have a question in case of springs.

Which springs would you suggest for racing on outdoor astroturf (europe)?

I can´t tell because I couldn`t test it so far, but i have been told by a few persons, that the standart kit springs are the worst choice for Turf.

comments? which Colors would you suggest? thanks for any Information
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Old 10-04-2013, 06:17 AM
  #8357  
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I agree, I've been running mine since April on a abrasive sugar track with no chassis protector.
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Old 10-04-2013, 09:55 AM
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Originally Posted by Ice22 View Post
Hey guys,

I have a question in case of springs.

Which springs would you suggest for racing on outdoor astroturf (europe)?

I can´t tell because I couldn`t test it so far, but i have been told by a few persons, that the standart kit springs are the worst choice for Turf.

comments? which Colors would you suggest? thanks for any Information
I ran my buggy all summer on an out door carpet track. It was fairly high grip and everyone stiffened up their cars. I ran yellow fronts with red rear springs. You have to go up in oil weight as well or the car gets really bouncy. I ran 3hole 1.3 all around with 37.5wt front and 32.5wt rear. It was a good setup when it was hot outside.
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Old 10-05-2013, 07:26 AM
  #8359  
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Originally Posted by Ice22 View Post
Hey guys,

I have a question in case of springs.

Which springs would you suggest for racing on outdoor astroturf (europe)?

I can´t tell because I couldn`t test it so far, but i have been told by a few persons, that the standart kit springs are the worst choice for Turf.

comments? which Colors would you suggest? thanks for any Information
Orange Front and Red rear for high grip (Silverstone, Stotfold, Torch, Cov, Herts)
4x1.3 pistons front and back, with 40wt front and 30wt rear.
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Old 10-05-2013, 01:31 PM
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Don't be afraid to run soft springs in the front.
Normally it makes the inner rear to lift on high traction tracks. I drove on carpet indoor today with pink (the softest) on the front and gold back. It worked very good.
I looked at Tebos setup from the Worlds, was skeptical, but turned out to be fine.

http://www.kyoshoamerica.com/assets/...ldChampion.pdf
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Old 10-05-2013, 04:41 PM
  #8361  
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Originally Posted by Ice22 View Post
Hey guys,

I have a question in case of springs.

Which springs would you suggest for racing on outdoor astroturf (europe)?

I can´t tell because I couldn`t test it so far, but i have been told by a few persons, that the standart kit springs are the worst choice for Turf.

comments? which Colors would you suggest? thanks for any Information
I run losi pink or yellow rear /losi green or xgear gold front 25/27.5r 30/32.5 f 4×1.3 ghea pistons fs rear arms with third inner hole
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Old 10-05-2013, 08:24 PM
  #8362  
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Originally Posted by cnelson3 View Post
I'm glad I read this. just switched to mid motor but i was worried about getting the weight to transition rearward quickly. 2 mm spacer? what are the negative effects?
Gives you more rear traction... But I would suggest don't go more than 2mm shims. With RB6 I would start with 0.5 shims under the RF hangers. Adding pro-squat gives you more forward bite on low to medium bite track... But if your track is really high bite I would not suggest using pro-squat...
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Old 10-06-2013, 02:16 AM
  #8363  
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Managed to break an axle today, just downsided a jump and snap.

Also looking for UMW705 for my RT5 but seems everywhere is out of stock.
Anyone know anywhere I could get one?
Or when they are due to be back in stock?
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Old 10-06-2013, 05:19 AM
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Same here, I´ve been running pink front gold rear all year no matter what Surface, I had White in front on carpet Indoor last season.

Hans did you run schumi tyres Indoor or vbc ?

Originally Posted by HansÖ View Post
Don't be afraid to run soft springs in the front.
Normally it makes the inner rear to lift on high traction tracks. I drove on carpet indoor today with pink (the softest) on the front and gold back. It worked very good.
I looked at Tebos setup from the Worlds, was skeptical, but turned out to be fine.

http://www.kyoshoamerica.com/assets/...ldChampion.pdf
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Old 10-06-2013, 06:06 AM
  #8365  
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Does anybody know when the RT6 will be available for purchase??
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Old 10-06-2013, 07:30 AM
  #8366  
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Late October
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Old 10-06-2013, 09:16 AM
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Hey guys,
Hoping to get some help in deciding on a 1/10 scale. I have an mp9e and an electric st-rr that I drive mostly. I want a 1/10 scale for indoor ONLY. Right now I have a b44, but I want to switch over to K car in 1/10.

So my question is, should I get a rb6 or zx5? I'm not concerned with which class is more competitive or anything. Basically, would I be able to get comfortable with 2wd since I'm mostly a 4wd driver? What would you recommend?
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Old 10-06-2013, 10:26 AM
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Originally Posted by jonasm48 View Post
Hey guys,
Hoping to get some help in deciding on a 1/10 scale. I have an mp9e and an electric st-rr that I drive mostly. I want a 1/10 scale for indoor ONLY. Right now I have a b44, but I want to switch over to K car in 1/10.

So my question is, should I get a rb6 or zx5? I'm not concerned with which class is more competitive or anything. Basically, would I be able to get comfortable with 2wd since I'm mostly a 4wd driver? What would you recommend?
Well the zx5 is a 4wx so ur better off with the rb6
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Old 10-06-2013, 11:30 AM
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Originally Posted by joecool View Post
I ran my buggy all summer on an out door carpet track. It was fairly high grip and everyone stiffened up their cars. I ran yellow fronts with red rear springs. You have to go up in oil weight as well or the car gets really bouncy. I ran 3hole 1.3 all around with 37.5wt front and 32.5wt rear. It was a good setup when it was hot outside.
This is the dialed setup! His car was untouchable!
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Old 10-07-2013, 12:12 AM
  #8370  
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Ran them this weekend at ierc / ca track they worked great better acceration and and won sc class and gave mod trucks fits all day.
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