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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 03-01-2014, 09:19 PM
  #10006  
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just ordered one of these, have been setting aside money and finally got one.
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Old 03-01-2014, 09:42 PM
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Originally Posted by steam
quick question for anyone who's using the MIP pucks on there rb6, are the MIP axle's longer, Picked up some AKA rims and noticed there is not a lot of meat left on the stock nut.
MIP axles are about 1/8 inch longer.
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Old 03-02-2014, 12:45 PM
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Re: UMW705 and UMW707 rear suspension holders. Which are the better bushings to use: metal or delrin? Thanks.
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Old 03-02-2014, 02:32 PM
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Originally Posted by E73
Re: UMW705 and UMW707 rear suspension holders. Which are the better bushings to use: metal or delrin? Thanks.
The new ones come with included in certs right? I would think the stock ones would be fine
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Old 03-02-2014, 03:02 PM
  #10010  
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Originally Posted by E73
Re: UMW705 and UMW707 rear suspension holders. Which are the better bushings to use: metal or delrin? Thanks.
I went with delrin. It wears better
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Old 03-02-2014, 04:35 PM
  #10011  
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For those running lightweight setups, which 155g lipos are you running?
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Old 03-02-2014, 06:11 PM
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Hey guys, I just made the switch from a TLR 22 2.0 to the RB6 ! Wow a great car . I can't seem to get it up to speed as the 22 . I'm running the same motor and gearing but it seems to be a tick slower . I'm using the Orion VST 2 7.5 motor . Is the internal ratio different than the Losi car ? By the way I am running these cars both in MM
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Old 03-02-2014, 07:31 PM
  #10013  
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Originally Posted by PRODURANGO
Hey guys, I just made the switch from a TLR 22 2.0 to the RB6 ! Wow a great car . I can't seem to get it up to speed as the 22 . I'm running the same motor and gearing but it seems to be a tick slower . I'm using the Orion VST 2 7.5 motor . Is the internal ratio different than the Losi car ? By the way I am running these cars both in MM
wont be same. Rb6 is 2.6 and the losi is 2.4 final
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Old 03-02-2014, 10:14 PM
  #10014  
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Originally Posted by PRODURANGO
Hey guys, I just made the switch from a TLR 22 2.0 to the RB6 ! Wow a great car . I can't seem to get it up to speed as the 22 . I'm running the same motor and gearing but it seems to be a tick slower . I'm using the Orion VST 2 7.5 motor . Is the internal ratio different than the Losi car ? By the way I am running these cars both in MM
thats probably the only thing i like better about my sons 22 over my RB6, his car is noticeably quicker than everyones. Our mod class is two 22s and then a pretty even split of AE and Kyosho. Everyone comments on how quick his car gets up to speed on our straight a way. He hits top speed at least a third of the straight a way sooner than the rest of us.
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Old 03-04-2014, 09:14 PM
  #10015  
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It looks like kyosho has updated the chassis they include in new kits. My old car is a 1st batch rb6 and just opened my new one up today and the chassis is different.
Attached Thumbnails Kyosho Ultima RB6 & RB6.6 Car Thread-image.jpg  
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Old 03-04-2014, 09:18 PM
  #10016  
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And again
Attached Thumbnails Kyosho Ultima RB6 & RB6.6 Car Thread-image.jpg  
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Old 03-04-2014, 09:42 PM
  #10017  
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Not totally sure but looks like the lightweight chassis to me but I could be wrong, my kit chassis looks like your first one
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Old 03-04-2014, 10:34 PM
  #10018  
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Originally Posted by Tom87
And again
It is not the light weight chassis. The LW has a lot more milling in the back and along the side rails. I have seen at least 3 different stock chassis, the 2 you have and one like your new one but missing the 2 holes for the battery stop.
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Old 03-04-2014, 10:40 PM
  #10019  
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It's nice that kyosho is keeping the kits up to date with improvements. It has the newer version of the mid motor bulkhead with the sway bar mounts and weight mounting holes, no dremaling the front plate required, and I suspect they have removed the short ball studs in exchange for the mid and long style.
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Old 03-05-2014, 12:23 AM
  #10020  
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You can see the differences here. It just looks like you have the RT6 style running change with the extra mounting holes.
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