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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 10-06-2016, 12:40 PM   #13771
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Quote:
Originally Posted by Fundukian View Post
anyone from Kyosho on the site that might have some insight on when the rb6.6 chassis will be shipping? (want to upgrade my rb6) showing as back ordered with a tbd date. Would prefer to support my local shop and get one there as opposed to online Thanks
Kyosho America shows in stock, so your LHS should be able to order direct from there:
HRP never have anything in stock, but put it on back order and they usually get stuff pretty quick.

http://www.kyoshoamerica.com/Aluminu...6_p_24599.html
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Old 10-06-2016, 01:59 PM   #13772
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So I asked this a while back but this could have been lost in the shuffle . . .

I am looking at moving from AE B5m to an RB6.6 . . . I have no idea what transmission i'll run because there is a new track going up closer to me . . .

so any 'must have' upgrades i should consider up front . . . or is it pretty much ready to go out of the box . . .


thanks!
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Old 10-06-2016, 02:40 PM   #13773
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I am wondering if its better to get the new rb 6.6 (gear differential) ot the new associated b6 for carpet/astro.

One against the other , which one? Please advise
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Old 10-06-2016, 02:55 PM   #13774
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I have both ran in med/high and super high bite clay. Rb6.6 laydown has much more aggressive steering and the b6 is more planted . He higher the grip the more I favor the rb6.6.
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Originally Posted by lynx75 View Post
I am wondering if its better to get the new rb 6.6 (gear differential) ot the new associated b6 for carpet/astro.

One against the other , which one? Please advise
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Old 10-06-2016, 07:19 PM   #13775
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Second day on the track with this buggy and i have to say my set up is shaping up nicely. I think this car is much better than the RB6. It steers but the back end stays put. Laydown trans are definitely a different driving style. I happen to really like the laydown 4 gear. I wasn't crazy about the stand up 4 gear but the laydown seems to do the trick. I always thought this car did better with weight up front. I'm running the brass bulkhead which adds a ton of forward grip. I'm really happy with this car.
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Old 10-06-2016, 09:32 PM   #13776
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Quote:
Originally Posted by mupchu View Post
So I asked this a while back but this could have been lost in the shuffle . . .

I am looking at moving from AE B5m to an RB6.6 . . . I have no idea what transmission i'll run because there is a new track going up closer to me . . .

so any 'must have' upgrades i should consider up front . . . or is it pretty much ready to go out of the box . . .


thanks!
I'd snag a pair of 0* aluminum rear hubs and some extra axles for the rear. Other than that if you are running on clay or medium to high grip run the stand up 3 gear. Carpet/Astro/super high-bite clay run laydown 4 gear. Car has it all and can do it all.

Good luck!
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Old 10-06-2016, 10:03 PM   #13777
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I think the 3 gear Laydown on medium/high bite clay (running treads/electrons) is incredible.

No need for 4 gear. I run mine with the 25 gram brass rear front hanger only because I am running a 160 gram slim shorty battery. I drove another the other day with a 7.5 on medium high bite (Electrons). Shocks on the front too and it was hands down the best buggy I have owned recently between the xb2 carpet, xb2 dirt and the b6 laydown. This buggy generates more traction than my laydown Xray xb2 with 2 brass hangers, flex carbon chassis, and a 4 gear laydown. Has the same bite as my associated b6d laydown.

Maybe the buggy drives excellent as a stand up. I'll have to try it but I currently wouldn't know because I only want to sacrifice the cornering if I start to lose grip, which I have not yet


Quote:
Originally Posted by likea45 View Post
I'd snag a pair of 0* aluminum rear hubs and some extra axles for the rear. Other than that if you are running on clay or medium to high grip run the stand up 3 gear. Carpet/Astro/super high-bite clay run laydown 4 gear. Car has it all and can do it all.

Good luck!
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Old 10-07-2016, 10:58 AM   #13778
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Quote:
Originally Posted by likea45 View Post
I'd snag a pair of 0* aluminum rear hubs and some extra axles for the rear. Other than that if you are running on clay or medium to high grip run the stand up 3 gear. Carpet/Astro/super high-bite clay run laydown 4 gear. Car has it all and can do it all.

Good luck!
I'd snag the avid axles over a spare pair of Kyosho axles, Avid axles are guaranteed for life.
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Old 10-07-2016, 11:20 AM   #13779
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I originally built up my RB6.6 coming from the original RB6 and I expected rear grip to be something I would need to work on, especially with a laydown. I was also testing it against my Xray Xb2 CE with laydown and after a few weeks of testing the 6.6 at OCRC on Medium to High Grip Clay (Electrons) I find myself looking for a bit more steering as the rear is so locked in. I've since moved my shocks to the front of the arms and pushed my battery up a bit more. I've also taken the front bulkhead spacer down to 0.5mm instead of the 1.0mm spacer.

Jason and I plan to do some slick tire testing at SCVRC next week! Bring on the Primes and Panther slicks!
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Old 10-07-2016, 11:22 AM   #13780
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for reference and testing purposes I've also built up a second RB6.6 chassis (upgrade from my RB6) and it is built with a 3 gear stand up. So far I think the laydown setup may actually be better even on medium grip. I really need to do more testing and tuning of the stand up car, so please take this with a grain of salt.
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Old 10-07-2016, 12:16 PM   #13781
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^^ had a typo - His car was the best buggy i have driven. Ever
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Old 10-07-2016, 01:13 PM   #13782
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Thanks Jason! I think it can get better too!
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Old 10-07-2016, 01:49 PM   #13783
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I think to wait until the next kyosho number , which rb7. I think Kyosho will come out with something like Associated or Yokomo as dirt or astro.
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Old 10-07-2016, 02:12 PM   #13784
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I think the RB6.6 has all of what the dual car platform from AE has to offer, considering it comes with all possible variations of rear motor, mid motor and 3 or 4 gear. The only other car that comes with all these options that I'm aware of is the Durango DEX210. I've also found that coming from RB6 to 6.6 and understanding the evolution from earlier cars, is that Kyosho does a great job of leveraging your already purchased parts to the next car and I think this can help lower the cost of "keeping up" with the latest versions.
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Old 10-07-2016, 02:42 PM   #13785
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Originally Posted by 13Maschine View Post
I think the RB6.6 has all of what the dual car platform from AE has to offer, considering it comes with all possible variations of rear motor, mid motor and 3 or 4 gear. The only other car that comes with all these options that I'm aware of is the Durango DEX210. I've also found that coming from RB6 to 6.6 and understanding the evolution from earlier cars, is that Kyosho does a great job of leveraging your already purchased parts to the next car and I think this can help lower the cost of "keeping up" with the latest versions.
^ this more than anything else. Xray has an interesting car as well but it's more expensive to have all the components needed. That said, having all the options in one box really sets Kyosho apart.
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