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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 02-01-2013, 02:40 PM
  #4891  
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Originally Posted by Cpt.America
How are they different than ones already produced? How much does it weigh compared to the stock piece?

I'v never had an issue with the factory front hanger on either the rb5 or rb6.
I also never had an issue. I suspect that this part is prone to flexing which causes the aluminum brace to bend actually. I have had the strc for the rb5 but frankly that part was never a problem in the 5.

I have gotten my stronger 720B part from amain already but I don't race till next saturday so cannot tell how strong it is. The older ones bent in 1 race day itself. Even the one in the pic is a noodle .
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Old 02-01-2013, 03:45 PM
  #4892  
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Originally Posted by Cpt.America
How are they different than ones already produced? How much does it weigh compared to the stock piece?

I'v never had an issue with the factory front hanger on either the rb5 or rb6.

I think it's more of a weight option
Instead of adding weight inside the bulk head and under the rack
I used the type c version in my rb5 wc and it worked well
From memory it weighed about 30 grams
Cheers
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Old 02-01-2013, 04:10 PM
  #4893  
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Ok guys sell me on the RB6!
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Old 02-01-2013, 04:29 PM
  #4894  
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Originally Posted by jordy-15
I think it's more of a weight option
Instead of adding weight inside the bulk head and under the rack
I used the type c version in my rb5 wc and it worked well
From memory it weighed about 30 grams
Cheers
Right I think that was the brass version around 36 grams I believe from ghea. The aluminum seems new.
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Old 02-01-2013, 04:55 PM
  #4895  
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Originally Posted by foxxarelly
Ok guys sell me on the RB6!
start reading about the first week of Oct.
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Old 02-01-2013, 09:43 PM
  #4896  
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Originally Posted by foxxarelly
Ok guys sell me on the RB6!
There is also a ton of information on post #1.
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Old 02-01-2013, 09:51 PM
  #4897  
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Originally Posted by foxxarelly
Ok guys sell me on the RB6!
Best thing to do Jacen is drive mine or chads next time your at northwest and compare it to the b4.. I'll be back from az on Monday and racing Thursday.
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Old 02-01-2013, 10:19 PM
  #4898  
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if you want the smoothest best handling buggy buy the rb6 if you dont want those things i'm sure youll enjoy the other brands
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Old 02-02-2013, 08:07 PM
  #4899  
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Can we use losi or ae spurs on this car?

Edit: ok I did a search, looks like losi or ae work, but slipper pads fit better on the losi gears. ?
Last edited by ryanpatrickgore; 02-02-2013 at 08:17 PM. Reason: Answered my q
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Old 02-02-2013, 08:21 PM
  #4900  
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Originally Posted by ryanpatrickgore
Can we use losi or ae spurs on this car?

Edit: ok I did a search, looks like losi or ae work, but slipper pads fit better on the losi gears. ?
Just use the AE gears with AE pads and it works great.
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Old 02-02-2013, 08:34 PM
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Thanks,
I am so stoked to pick this car up Monday, dumped the b4 and I think I made a good choice! It was pretty new and already clapped out! Spent some time talking to jowers and looking at his car.. And man Can't wait
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Old 02-02-2013, 08:37 PM
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Am I correct that the stock kyosho pads fit the losi and not the ae spurs? I'd rather just buy a losi 70tooth rather than the ae spur plus the ae pads. If I already have new kyosho pads I'd like to use those.
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Old 02-02-2013, 08:56 PM
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Originally Posted by steam
Just to confirm
The the 521 and the 521-01 arms are exactly the same except for the 521 have 2 holes for the shock mounting and the 521-01 have a single hole that is between where the 2 holes would be.

other then that there exactly the same correct?
The standard arm for rb6 is curved and the 521-01 arm is straight which adds stability. When running the 521-01 arms, you have to raise your shock collars quite a bit to have the same ride height.
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Old 02-02-2013, 09:45 PM
  #4904  
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Originally Posted by SAMCRO
The standard arm for rb6 is curved and the 521-01 arm is straight which adds stability. When running the 521-01 arms, you have to raise your shock collars quite a bit to have the same ride height.
Thanks Sam,
Yes I understand this. I'm not that familiar with the RB5 parts evolution, I was just trying to catch up and understand changes. It is pretty awsome that we can pretty much run any arm on this car for tuning purposes.
I was told by a team driver that essentially the strait arms help square the car up, where the swept arms carry more corner speed. But its really a tuning function to your driving style. It's not like there is a right and wrong option.

I dont think losi or AE offer different arm options........
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Old 02-02-2013, 10:34 PM
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Originally Posted by ryanpatrickgore
Am I correct that the stock kyosho pads fit the losi and not the ae spurs? I'd rather just buy a losi 70tooth rather than the ae spur plus the ae pads. If I already have new kyosho pads I'd like to use those.
If you're running stock, I highly suggest running the kimbrough spur instead of a losi. Also, I may be wrong but I think the Kyosho pads only work with Kyosho spurs.
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