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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 04-05-2013, 10:01 PM   #6076
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If it "loses traction big time", you have a setup "issue"... like.. your rear tires are on backwards (you rotated them on accident), or you have a bind of some kind.
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Old 04-05-2013, 10:46 PM   #6077
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Probably easiest to post your actual setup...
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Old 04-05-2013, 11:53 PM   #6078
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so i ran my buggy when full day and the rear end of chassis has a small dent . ppl say its a common issue. can anyone provide me with more info?? thanks
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Old 04-06-2013, 01:35 AM   #6079
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Originally Posted by nitroargi View Post
Are you still using the stock springs? If so try Gold rear...
Do you know where I could purchase the golds for the rears? Sold out at both of my local hobbyshops. I will post a setup sheet soon. I purchased the flat rear arms because I heard they help traction big time, but i do not know which outer pins I need??
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Old 04-06-2013, 03:26 AM   #6080
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so i ran my buggy when full day and the rear end of chassis has a small dent . ppl say its a common issue. can anyone provide me with more info?? thanks
The early versions were thinner underneath the gearbox, leaving a small space there. Current versions are slightly thicker.

It's not worth worrying about. I've been running my release-day-kit since release with the dent (day 1 too) and it hasn't worn through or been worth bothering with. I'm sure others are in the same boat.

If you really want to worry about it, go back a few hundred pages and read up on how to chop the T plate down to 'fill in' the space.
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Old 04-06-2013, 07:58 AM   #6081
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Originally Posted by Jetboat_Jake View Post
Do you know where I could purchase the golds for the rears? Sold out at both of my local hobbyshops. I will post a setup sheet soon. I purchased the flat rear arms because I heard they help traction big time, but i do not know which outer pins I need??
LA229 is the outer pin for 521 and 521-1 arms.
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Old 04-06-2013, 11:30 AM   #6082
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Just switched over from a B4.2 to a RB6 and got its first run in last night grabbing 4th in 17.5, all I can say is WOW. Really looking forward to improving it even more and I would also like to thank all of you for this great thread!
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Old 04-06-2013, 11:41 AM   #6083
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Originally Posted by Life_livin View Post
Just switched over from a B4.2 to a RB6 and got its first run in last night grabbing 4th in 17.5, all I can say is WOW. Really looking forward to improving it even more and I would also like to thank all of you for this great thread!
o yeah, where did u go racing? LSR?
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Old 04-06-2013, 11:47 AM   #6084
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Yeah went down there with Brian. Their current layout is my favorite so far its sick.
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Old 04-06-2013, 05:33 PM   #6085
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People using the lunsford stuff: How much weight did this chop off?
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Old 04-06-2013, 08:16 PM   #6086
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Hey guys I am still having issues with my transmission/diff. I recently rebuilt the diff and transmission with new balls, gears and rings with the proper lube. My issue is that I am getting this grinding sound at low speeds. At higher speeds the noise goes away. I attached a video.

+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
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Old 04-06-2013, 08:22 PM   #6087
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What upgrades should I get for this car?
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Old 04-06-2013, 08:43 PM   #6088
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motor bearing
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Old 04-06-2013, 08:46 PM   #6089
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Quote:
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What upgrades should I get for this car?
Read the 1st post.
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Old 04-07-2013, 09:16 AM   #6090
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Quote:
Originally Posted by pekow91 View Post
Hey guys I am still having issues with my transmission/diff. I recently rebuilt the diff and transmission with new balls, gears and rings with the proper lube. My issue is that I am getting this grinding sound at low speeds. At higher speeds the noise goes away. I attached a video.

+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
Well, it SOUNDS like a bad / unoiled bearing somewhere.. hard to tell without hearing that in person.
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