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Kyosho Ultima RB6 & RB6.6 Car Thread

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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 05-06-2013, 08:56 AM
  #6646  
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Originally Posted by Bob Barry
I forgot to check, what spur gear are you guys running for 17.5? The smallest KY spur I saw was 76.

Also I can run AE spurs if I swap to AE slipper plates/pads, correct?
Someone said you can use the TLR spurs and slipper pads as a direct bolt on also. Their Kevlar gears are pretty nice also.
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Old 05-06-2013, 09:01 AM
  #6647  
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Originally Posted by Wildcat1971
Someone said you can use the TLR spurs and slipper pads as a direct bolt on also. Their Kevlar gears are pretty nice also.
Yep I run the tlr jconcepts silent spurs. Got a 70T on my rb5 stock and soon to be my second rb6. I have a slipper eliminator coming and then I can put the really tiny 50T 60T 48p spur gears for mod TC.
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Old 05-06-2013, 09:10 AM
  #6648  
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I switched to the full AVID clutch assembly. Good part about the avids, is you can run a 66 (i think that's the one).
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Old 05-06-2013, 10:22 AM
  #6649  
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Cool, thanks guys. I'll just order up an Avid then since I really am starting from scratch anyway.
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Old 05-06-2013, 10:31 AM
  #6650  
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It's not a cheap way to go... as you have to buy the kyosho top shaft as well. Kind of a bummer, but it is what it is. Losi spur and pads fit too.
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Old 05-06-2013, 10:36 AM
  #6651  
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oh Avid doesn't make a clutch assembly just for the RB6? I was just assuming they did. Silly me for assuming things
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Old 05-06-2013, 10:40 AM
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Originally Posted by Bob Barry
oh Avid doesn't make a clutch assembly just for the RB6? I was just assuming they did. Silly me for assuming things
you need to use their topshaft. On the upside, its alum and not steel. So less rotating mass for 17.5. Personally, I thought the K slipper worked great in its stock form. I dont know what the losi spur and pad feel like, bit I didnt notice any fading with a 10.5 on a medium bite indoor track when i was practicing. But yeah, its much nicer to be able to replace spurs locally. It would be pretty cheap to try the TLR setup and finding spurs would be easy.
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Old 05-06-2013, 10:42 AM
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Originally Posted by Wildcat1971
you need to use their topshaft. On the upside, its alum and not steel. So less rotating mass for 17.5. Personally, I thought the K slipper worked great in its stock form. I dont know what the losi spur and pad feel like, bit I didnt notice any fading with a 10.5 on a medium bite indoor track when i was practicing. But yeah, its much nicer to be able to replace spurs locally. It would be pretty cheap to try the TLR setup and finding spurs would be easy.
The kyosho ones aluminum as well. Only car I knew with a steel was I think the schumacher cougar. I used that garodisc pad with the TLR stuff things nice with it and the WC vented plates on my mod rb6.
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Old 05-06-2013, 10:46 AM
  #6654  
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oh, I didnt know it was alum. The b4 is steel also. But I would not put the avid system on it. Its expensive and not really needed. I have never used the garo discs, but a lot of people seem to like them.
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Old 05-06-2013, 11:30 AM
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I wasn't doing it as much for the slipper performance as I was getting the proper gear ratio. IF I run 17.5, it won't be until the fall so I have time to work out the details. I appreciate the suggestions.
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Old 05-06-2013, 12:06 PM
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Originally Posted by Bob Barry
I wasn't doing it as much for the slipper performance as I was getting the proper gear ratio. IF I run 17.5, it won't be until the fall so I have time to work out the details. I appreciate the suggestions.
Then it might be a good idea to take a look at the losi spurs/pads... might work just fine forya.
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Old 05-06-2013, 01:59 PM
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Originally Posted by Wildcat1971
oh, I didnt know it was alum. The b4 is steel also. But I would not put the avid system on it. Its expensive and not really needed. I have never used the garo discs, but a lot of people seem to like them.
B4 top shaft is not steel, if it is, it's the weakest, lightest steel on the planet, unobtanium!
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Old 05-06-2013, 02:06 PM
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Are you sure? I was in my b4 diff this last weekend. The gear feels pretty heavy. I dont think its alum.
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Old 05-06-2013, 02:20 PM
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The B4 top shafts are steel. The .1/.2 top shafts are really crappy steel since production moved to Thunder Tiger.
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Old 05-06-2013, 02:33 PM
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Ae quality going down hill steadily lately. Switching to the rb6 was like a dream come true. My b4 was so clapped out I was replacing parts that were just sloppy and worn after only like 3 months! The b4 is like a toy compared to the Kcar.
Why anybody would sell this car and go back to ae is beyond me...
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