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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 ForumsThread 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 06-19-2018, 06:01 AM
  #14746  
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I'm looking to buy a .6 kit that could be a great deal right know. What are the most common upgrades for astroturf? Brass bulkhead, rear suspension holders, gullwing arms... What replacement parts should i carry to the track? Thank you in advance
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Old 06-23-2018, 07:23 PM
  #14747  
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Originally Posted by lexusbest
I'm looking to buy a .6 kit that could be a great deal right know. What are the most common upgrades for astroturf? Brass bulkhead, rear suspension holders, gullwing arms... What replacement parts should i carry to the track? Thank you in advance
yes on brass front susp holder, rear hubs and gullwing.

parts: Arms, C-hubs, Shock ends, bulk head.
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Old 06-24-2018, 12:00 AM
  #14748  
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Originally Posted by lexusbest
I'm looking to buy a .6 kit that could be a great deal right know. What are the most common upgrades for astroturf? Brass bulkhead, rear suspension holders, gullwing arms... What replacement parts should i carry to the track? Thank you in advance
what class are you plannijg to run? I run 17.5T blinky and haven't broken a single thing in a year and there have been a lot of crashes, cartwheels and missed landings...
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Old 06-24-2018, 12:21 AM
  #14749  
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Originally Posted by jgil089
what class are you plannijg to run? I run 17.5T blinky and haven't broken a single thing in a year and there have been a lot of crashes, cartwheels and missed landings...
mod
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Old 06-24-2018, 02:05 AM
  #14750  
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Is the rear shock tower for RB6 mid motor the same as 6.6

edit - Downloaded 6.6 manual and has same stock number.

Last edited by Blui3; 06-24-2018 at 02:24 AM. Reason: found info
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Old 06-24-2018, 12:31 PM
  #14751  
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Hello, is there a after market shock cap ball for the Kyosho shocks? Mine are trashed and I don’t want to order the whole parts pieces from UM753-1 to get get them. Thanks!
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Old 06-24-2018, 05:14 PM
  #14752  
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I have some K parts here Kyosho RB6.6 RT6 SC6 HUGE NIP PARTS LOT UPGRADES
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Old 06-25-2018, 09:50 AM
  #14753  
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I want to try UMW708-02 for the caps but have not yet purchased them.

I do use these for the lowers.
Front Lower - W0136
Rear Lower - IF462H
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Old 06-25-2018, 04:40 PM
  #14754  
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Gotcha, I may see if the hobby shop has them this Friday. It's the caps I'm most concerned with. The plastic seems really weak and they seem to generate a lot of slop quickly. Thanks for the info.
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Old 06-26-2018, 08:57 AM
  #14755  
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Exotek made some real nice delrin ones along with some in aluminum but I can't find them anymore. Aluminum on aluminum always sounded like a bad idea to me.
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Old 06-26-2018, 01:45 PM
  #14756  
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Originally Posted by Arcain41
Exotek made some real nice delrin ones along with some in aluminum but I can't find them anymore. Aluminum on aluminum always sounded like a bad idea to me.
I hear ya, and I have to agree. But I'm willing to try it. It would be nice to find some derlin ones!
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Old 06-26-2018, 06:51 PM
  #14757  
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Originally Posted by lexusbest
I'm looking to buy a .6 kit that could be a great deal right know. What are the most common upgrades for astroturf? Brass bulkhead, rear suspension holders, gullwing arms... What replacement parts should i carry to the track? Thank you in advance
I have a 6.6 I'm going to list if your still interested in one. Tone of parts too
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Old 06-29-2018, 01:30 PM
  #14758  
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Rb6.6 is on amain $300. Really good deal new. Should be able to price match at any hobby store.
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Old 06-30-2018, 09:22 AM
  #14759  
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I have a question about anti squat.
How can a shim above the rr suspension holder affect anti squat?
Always thought it is only affected by the shims under the fr and rr suspension holders...
Thanks !
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Old 06-30-2018, 07:23 PM
  #14760  
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You always need to have a total of 1mm shims for the rear hanger. This prevents The bulkhead and transmission from binding. The most antisquat is 1mm above the rear hanger. The least is 1mm below. You can also run .5mm above and below.
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