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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 01-07-2013, 01:51 PM
  #4036  
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Trevor,

You will get fast in no time. Just need more practice time is all, i think your RB5 is right their with the RB6s. I know me and zach were impressed.
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Old 01-07-2013, 01:58 PM
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Originally Posted by aloksatoor View Post
I believe the tlr aluminum would work, I can go home tonight and verify it if you need me to.
That would be helpful. Thanks. Guess I'll have to bring out the rb5 at WCRC tonight unless I find someone who isn't using their rb6 Futaba horn and would sell it to me.
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Old 01-07-2013, 02:27 PM
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Has anybody tried the avid 2 hole 1.6 piston or the 4 hole1.3 any feedback would be great!
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Old 01-07-2013, 02:41 PM
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Originally Posted by hollywood7 View Post
Has anybody tried the avid 2 hole 1.6 piston or the 4 hole1.3 any feedback would be great!
I think a lot of us are running 1.3 x 4 pistons. I run the Gheas and they are amazingly true... very smooth.

Fewer holes means you run lighter oil to maintain the same static damping... however, lighter oil packs more than heavier oil. So moving from 5x1.3 to 4x1.3 and running lighter oil, increases pack.
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Old 01-07-2013, 02:56 PM
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Originally Posted by Cpt.America View Post
I think a lot of us are running 1.3 x 4 pistons. I run the Gheas and they are amazingly true... very smooth.

Fewer holes means you run lighter oil to maintain the same static damping... however, lighter oil packs more than heavier oil. So moving from 5x1.3 to 4x1.3 and running lighter oil, increases pack.
i just made the switch to 1.3 x 4s and noticed a huge difference. Feels the same in the corners but jumps even better now.

What has been your favorite combo? I have tried 30f, 27.5r, but want to try 27.5f, and 25r
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Old 01-07-2013, 02:59 PM
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Originally Posted by Nitronut3 View Post
i just made the switch to 1.3 x 4s and noticed a huge difference. Feels the same in the corners but jumps even better now.

What has been your favorite combo? I have tried 30f, 27.5r, but want to try 27.5f, and 25r
currently running (WIP)

Front - Pink / 4x1.3 / AE 30
Rear - Gold / 4x1.3 / AE 27.5
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Old 01-07-2013, 03:00 PM
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Originally Posted by aloksatoor View Post
I believe the tlr aluminum would work, I can go home tonight and verify it if you need me to.
Yup. It works!
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Old 01-07-2013, 03:30 PM
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Thanks BranVita

Last edited by pekow91; 01-07-2013 at 06:53 PM.
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Old 01-07-2013, 03:33 PM
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Originally Posted by Beasty Shout View Post
Yup. It works!
Cool gonna strip the old rango some more then :P the horn was on it hehe.
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Old 01-07-2013, 04:56 PM
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Originally Posted by Nitronut3 View Post
Trevor,

You will get fast in no time. Just need more practice time is all, i think your RB5 is right their with the RB6s. I know me and zach were impressed.
Thanks bro....you guys are just blazing fast out there with your special K's! Man I really appreciate all the help from you guys, I learn a LOT! Thanks for the tires/parts and everything else too man! It's a lot of fun racing with you guys and we have a freaking blast in the pits!

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Old 01-07-2013, 05:18 PM
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Originally Posted by Trevor Williams View Post
Thanks bro....you guys are just blazing fast out there with your special K's! Man I really appreciate all the help from you guys, I learn a LOT! Thanks for the tires/parts and everything else too man! It's a lot of fun racing with you guys and we have a freaking blast in the pits!

Its def nice to have you back
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Old 01-07-2013, 07:27 PM
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I'm curious as to how raising and lowering the ballstuds change the handling. I would prefer more then " well it raises and lowers the roll centers".
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Old 01-07-2013, 07:33 PM
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Originally Posted by Gitsum View Post
I'm curious as to how raising and lowering the ballstuds change the handling. I would prefer more then " well it raises and lowers the roll centers".
Understanding roll center is important in tuning your car. Take the time and read:

http://users.telenet.be/elvo/
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Old 01-07-2013, 07:53 PM
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Originally Posted by Cpt.America View Post
currently running (WIP)

Front - Pink / 4x1.3 / AE 30
Rear - Gold / 4x1.3 / AE 27.5
I am running the same Ghea pistons with 27.5 front and 25wt rear and working great.
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Old 01-07-2013, 08:17 PM
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Here is a pic of the gearing on my buggy, still having trouble on getting it to mesh. Im running 69/32 and this is the closest I can get the pinion to the spur. Not really sure at this point what it could be. Would anybody have an idea on what could be the reasoning?
Thanks.
Attached Thumbnails Kyosho Ultima RB6 & RB6.6 Car Thread-rb6-gearing-001-540x359-.jpg  
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