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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 10-04-2015, 06:16 PM   #12511
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Finally decided to take my RB6 full circle to run sideways battery. I just cut the side pods previously to try it out and liked it so I decided to commit to it.

All milled out


Slight gap where I went a little too far cutting off the side pods


Battery fits perfect and sits right against where the side pods got cut, no movement side to side at all



Strap fits good now and doesnt have to be bent
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Old 10-04-2015, 10:19 PM   #12512
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I did the same with the side pods and put a small strip of gorilla tape on the grinder chassis and side pod. Makes it look so much better and doesn't stratch the battery!
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Old 10-05-2015, 06:07 AM   #12513
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Quote:
Originally Posted by timannnn6 View Post
Pics?
I can try to take some pics, though they won't really show much.

Quote:
Originally Posted by eper View Post
didit change any handling? did you compensate for the wing position
Not sure if it really did much to the handling. I had made a couple of other changes this weekend, but I will say, I ran my fastest laps this weekend on our current layout. I didn't do anything with the wing position, could be something to play with however. I race on a fairly tight indoor track. Tire choice is M4 Primes.
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Old 10-05-2015, 10:11 AM   #12514
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has anyone tried to mount the rear shocks in the forward position with a mid motor setup? How will it affect the handling of the car?
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Old 10-05-2015, 10:29 AM   #12515
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I am wanting to try the sideways pack in my buggy. I am currently running the lightweight chassis and am concerned with milling the side of the chassis. Has anyone done this with the lightweight chassis? If so is there anything to look out for
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Old 10-05-2015, 10:58 AM   #12516
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has anyone tried to mount the rear shocks in the forward position with a mid motor setup? How will it affect the handling of the car?
After moving the rear shock tower forward 3mm, I was considering giving this a try. May be something I mess with this week.
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Old 10-05-2015, 11:44 AM   #12517
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It's not possible, the slippers fouls the rear shock.
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Old 10-05-2015, 02:37 PM   #12518
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Quote:
Originally Posted by fanfor18 View Post
I am wanting to try the sideways pack in my buggy. I am currently running the lightweight chassis and am concerned with milling the side of the chassis. Has anyone done this with the lightweight chassis? If so is there anything to look out for
Only thing I can think of is there could be too much chassis flex on the LW chassis. If you got a battery strap that could double as an upper brace for the chassis it might work. That was my worry with that chassis and why I opted to get a standard chassis that was mostly milled out for the sideways battery mod.
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Old 10-06-2015, 02:59 AM   #12519
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Quote:
Originally Posted by joncmack View Post
I can try to take some pics, though they won't really show much.



Not sure if it really did much to the handling. I had made a couple of other changes this weekend, but I will say, I ran my fastest laps this weekend on our current layout. I didn't do anything with the wing position, could be something to play with however. I race on a fairly tight indoor track. Tire choice is M4 Primes.
okthanks for responding
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Old 10-09-2015, 11:41 AM   #12520
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Default Suspension hangers

New to the rb6, I see the narrow and wide hangers listed on 1st page are discontinued and see some exotek and RDRP versions. Quick question, the RDRP version says you can adjust rear toe from 2, 4 & 6 and the exotek is listed as narrow and wide. Are these the same adjustments just worded differently? Thanks.
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Old 10-09-2015, 01:07 PM   #12521
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Quote:
Originally Posted by nordfink View Post
New to the rb6, I see the narrow and wide hangers listed on 1st page are discontinued and see some exotek and RDRP versions. Quick question, the RDRP version says you can adjust rear toe from 2, 4 & 6 and the exotek is listed as narrow and wide. Are these the same adjustments just worded differently? Thanks.
I would go with the Kyosho Aluminum Hangers. They offer a ton of tuning possibilities over any of the aftermarket versions.
http://www.amainhobbies.com/rc-cars-...umw707/p264132
http://www.amainhobbies.com/rc-cars-...umw705/p264129
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Old 10-12-2015, 06:22 AM   #12522
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Hey all. First time buyer of Kyosho and the RB6. Purchased one from EBay yesterday and was seeing if I need to order anything i.e. Spares, upgrades and anything else. Here are a few pictures. I am already planing on ordering the exotek front bulk head.







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Old 10-12-2015, 07:48 AM   #12523
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if anyone is interested i build my 17.5 car last week and i mounted the rear shock tower using 4, 2mm spacers to move the tower forward so that i could change the inner ballstud height. (losi allen driven ballstuds) this mod makes it so u do not need t disassemble the entire rear of the car to make a change. i also used 4, 2mm spacers to space the wing mount back so that its in its original position because i would be farther forward with the tower spaced forward. it held up fine and did not change the handling of the car much if at all. i dont find that i move that ballstud location often but i do like to be able to have that option open tome and anything that makes the car easier to tune is a upgrade in my opinion. hope everyone is loving their rb 6 as much as myself and good luck to all the red samurai drvers out there
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Old 10-12-2015, 07:58 AM   #12524
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Quote:
Originally Posted by eper View Post
if anyone is interested i build my 17.5 car last week and i mounted the rear shock tower using 4, 2mm spacers to move the tower forward so that i could change the inner ballstud height. (losi allen driven ballstuds) this mod makes it so u do not need t disassemble the entire rear of the car to make a change. i also used 4, 2mm spacers to space the wing mount back so that its in its original position because i would be farther forward with the tower spaced forward. it held up fine and did not change the handling of the car much if at all. i dont find that i move that ballstud location often but i do like to be able to have that option open tome and anything that makes the car easier to tune is a upgrade in my opinion. hope everyone is loving their rb 6 as much as myself and good luck to all the red samurai drvers out there
Did you space the top of the shocks back the same amount to keep them in the same position?
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Old 10-12-2015, 09:44 AM   #12525
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Default RB6 Cross Brace

This is the battery brace and chassis stiffener developed with Tanner Day and Thomas Tran. It allows you to mill down your chassis to run a shorty sideways without making the chassis to weak.



This is a shorter version on the lay down tranny RB6.

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