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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
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 01-07-2014, 10:38 PM
  #9271  
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Originally Posted by tibbs
Anybody try the Mip pucks system for stock class yet?
Originally Posted by Speedychris22
I'm also curious if anyone is using the mip puck system??
I installed the puck kit last weekend. The rb6 isn't my primary stock class buggy so I'm not as fast as I am with my b4.2 without the puck system. With more driving time and setup I may be. I did get a kit for my b4.2 so I would recommend them. Very high quality kit. The weight savings is good too!
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Old 01-07-2014, 11:37 PM
  #9272  
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Starting point for gearing an 8.5t? Was thinking 22\76ish?
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Old 01-08-2014, 12:02 AM
  #9273  
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Starting point for gearing an 8.5t? Was thinking 22\76ish?
Yep that's good for small track, go 23/76 for bigger tracks
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Old 01-08-2014, 04:33 AM
  #9274  
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Originally Posted by VenturaDC
Starting point for gearing an 8.5t? Was thinking 22\76ish?
That's what I run! I bought the avid spur and top shaft kit and I'm still gonna use the 76/22
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Old 01-08-2014, 06:21 AM
  #9275  
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Originally Posted by VenturaDC
Starting point for gearing an 8.5t? Was thinking 22\76ish?
22/81 for me on a VST2 8.5. I geared it down a little to give the car a little more pop on our tight indoor track.
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Old 01-08-2014, 07:22 AM
  #9276  
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I use the MIP puck system in my rb6 the weight difference between the kyosho out drives and the MIP outdrives is very noticeable. Just takes some tweeting to make 100% reliable

"Ducky"
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Old 01-08-2014, 10:35 AM
  #9277  
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I ordered me one of these buggies today from amain and should arrive tomorrow. I liked this buggy ever since I got to handle one during The Cactus Classic.

I want to go with a gear diff and I found losipartshouse.com had KYOUMW604 in stock (only 1) so I went ahead and bought it. Is this the correct diff assembly I need though. I seen on Petitrc they have a guide for it but shows all the individual part #'s and not this one.
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Old 01-08-2014, 11:18 AM
  #9278  
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Originally Posted by nolimit208
I want to go with a gear diff and I found losipartshouse.com had KYOUMW604 in stock (only 1) so I went ahead and bought it. Is this the correct diff assembly I need though. I seen on Petitrc they have a guide for it but shows all the individual part #'s and not this one.
Yep, that's the one you want. The UMW604 diff kit was released fairly recently. Before you had to buy the individual components, which is why Petit lists them.
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Old 01-08-2014, 11:42 AM
  #9279  
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Thanks for the reply, can't wait to start assembling it, I will also be waiting on the rear rf suspension mount I found available on ebay. Will have to wait to assemble the car until I get all the orders in because I am going to start doing live broadcasts of races through justin.tv, and the first broadcast will be the entire assembly start to finish in one sitting.
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Old 01-08-2014, 12:36 PM
  #9280  
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Hope you have electric driver bits, its gonna take awhile for one sitting.
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Old 01-08-2014, 01:13 PM
  #9281  
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Were any of you at motorama last year, did anyone run MM? Clay tires don't work at my track, so I'm trying to decide if I should bring a car setup for RM as well, just in case..
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Old 01-08-2014, 05:29 PM
  #9282  
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Originally Posted by nickdawg18
Hope you have electric driver bits, its gonna take awhile for one sitting.
About half way thru my build my hand was cramped, I knew better as I've built alot of kits over the last 15yrs, but I grabbed my slow speed driver, even the mighty kyosho plastics are not fond of drill drivers, the tight fit and steady speed of the screw going in causes a lot of heat and softens the plastic making it very easy to over do it just a touch and strip the holes. Even running them in 90% then the rest by hand can even get to much heat into the plastic.
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Old 01-08-2014, 05:57 PM
  #9283  
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Originally Posted by VenturaDC
About half way thru my build my hand was cramped, I knew better as I've built alot of kits over the last 15yrs, but I grabbed my slow speed driver, even the mighty kyosho plastics are not fond of drill drivers, the tight fit and steady speed of the screw going in causes a lot of heat and softens the plastic making it very easy to over do it just a touch and strip the holes. Even running them in 90% then the rest by hand can even get to much heat into the plastic.
Exactly why I don't have electric driver bits. I'd rather take three days to build a kit and not heat up the plastic too much.
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Old 01-08-2014, 06:07 PM
  #9284  
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I just ordered that gear diff from Absolute hobbies, never was good with ball diffs.
It takes me M-F to build a kit as the weekend usually racing.
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Old 01-08-2014, 07:01 PM
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Just ordered my rb6.

Anything recommended out of the box?
Im switching from TLR and hoping this wont be a hard transition.
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