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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 08-18-2013, 08:36 PM   #7891
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the tracks I ran on the losi 55 pistons just didn't handle well put the stock 5 hole back in and my lap times went back down now im not a fast local guy like "Luke Richards" but my car was way lose and un predictable till i went back to my setup what oil and what pistons do you guys run now dmatter drove my car yes it was a lil soft and setup is right where it should be minus sp rear arms
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Old 08-18-2013, 08:39 PM   #7892
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They run the front arms just below level while on the car stand. They said most of the set up sheets run even less then they are. Just wondering if this is some kind of trend with the new car and what the reasoning was behind it. I also know a team guy but I have not got to talk to him about yet. But I did notice his car drives very flat and runs very little droop also. Just wondering.....because I am thinking about trying one. I know my old K cars were good jumpers but we ran a good amount of droop. Never did get the old cars rear ends to roll much though. Any of you guys switch from a 22 to a rb6? You might know what im talking about....
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Old 08-18-2013, 08:45 PM   #7893
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Thank you for letting me ring out your K car tonight John! Im still up in the air. I love my 22 but need a different look for awhile.
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Old 08-18-2013, 08:59 PM   #7894
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Quote:
Originally Posted by Bob Barry View Post
my guess is that the car wasn't setup properly because my car's strength is handling the jumps and rough stuff.
I agree! The whole reason I switched from the 22to the rb6 was how it handled the jumps. It's also nice to have as the track starts to go away and become bumpy.
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Old 08-18-2013, 09:19 PM   #7895
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I use the Avid 4x1.3 and they fit quite well. Around 0.1mm thinner than stock Ks measured with digital calipers. Cheers,
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Old 08-18-2013, 09:36 PM   #7896
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Quote:
Originally Posted by dmatter View Post
Without measuring I would say they were running about 1/2 as much up travel compared to a b4 or 22? Just wondering why so little droop?
We don't. I'm not sure what setup sheet they are following, but they are either a) erroneously running the short eyelets, or b) are misreading the setup sheet... (or C), they are looking at a very bad setup sheet).
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Old 08-18-2013, 10:26 PM   #7897
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yeah I advise them to put on one of two setups and tune off of it. Even if they think they are fast. Either Jared Tebo's 2013 Midwest Winter Champs (CRCRC) setup or the 2012 Japanese Std Setup.

I just switched back to 10th scale now full time after the summer off for 8th scale and I'm a bit rusty. I'll be hammering it pretty hard now and once I feel that I get my throttle finger somewhat used to 2wd mod again, I'll start working more on the setups.

If nothing else, my stuff will give you guys a different perspective because the tracks we run on here in Jersey are low bite, sandy/dusty, and can get torn up quick by 8th scales and 4wd SCT's.
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Old 08-18-2013, 11:21 PM   #7898
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Hello- could one of you kind rb6 owners who runs stock (no added wt to buggy other the esc, battery etc) please weigh your buggy?!

I'm curious to know the weight as I might want to switch over from my b4.2. My buggy weighs 1524 grams. Don't know any rb6 owners locally to see what they weigh.

Thanks in advance for any kind person who helps!
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Old 08-18-2013, 11:29 PM   #7899
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I'm at 1542, which I think is light for a RB6, so plus 20 to 30 grams would probably be an average with shorty pack
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Old 08-19-2013, 12:47 AM   #7900
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Mine is at 1548 with the Kyosho alloy steering rack and arms, Futaba 9551, Fantom shorty, airtronics 2.4 rx and Ion4. This is with tires w/ open cell foams, closed cell will weigh a tick more.

Dayton

Edit: It also has the alloy rear hubs, avid top shaft and slipper.
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Last edited by 1armed1; 08-19-2013 at 05:19 AM. Reason: Forgot a few parts
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Old 08-19-2013, 04:56 AM   #7901
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Quote:
Originally Posted by nrm1977 View Post
Hello- could one of you kind rb6 owners who runs stock (no added wt to buggy other the esc, battery etc) please weigh your buggy?!

I'm curious to know the weight as I might want to switch over from my b4.2. My buggy weighs 1524 grams. Don't know any rb6 owners locally to see what they weigh.

Thanks in advance for any kind person who helps!
my car has every Kyosho gunmetal part on it and weighs 1580 with a shorty pack. This is with the stock slipper setup. I am putting the Avid on this week. I'll weigh it after.

and yes, I know it's not 1500 but I like the aluminum. In a perfect world, I would have this car for mod and a light weight car for 17.5....
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Old 08-19-2013, 05:15 AM   #7902
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My car weighs a ton. I weighed it a couple of weeks ago and it was 1602.
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Old 08-19-2013, 05:26 AM   #7903
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Sorry another noob to Kyosho question
do they make the ally washers in 0.5mm?
I can find the 3mm/2mm/1mm etc (W0142GM,W0143GM,W0145GM)
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Old 08-19-2013, 05:36 AM   #7904
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1520g RTR

Savox 1251
Hobbywing Xerun 60A
MurphDog 17.5
14ga wire
Turnigy NanoTech 4200mah 65C Shorty
FrSky receiver
RC4 Transponder

Avid slipper
Exotec front bulk head
Exotec rear bulk head
Kyo ackermann plate
Kyo rear hubs

So mine could be lighter still but wouldnt be as durable I don't think.

I wouldnt mind a Carbon/Kevlar chassis though, I may make one one day, not for weight though, just bling and they dont bend like aluminium.
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Old 08-19-2013, 05:56 AM   #7905
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Rear Motor - 1560g
Lunsford camberlinks, Exotec Rear camberlink mount, Exotec steering rack, RB5 battery brace and aluminum stands, Avid Slipper, Avid rear axles, Reedy 8.5, SP Reventon Pro, KO RSx Response full size servo, SMC 4300 mah 96mm.

Rear Motor - ~1545g
KO RSX-One10 and all the above.

Quote:
Originally Posted by KalEl63 View Post
Sorry another noob to Kyosho question
do they make the ally washers in 0.5mm?
I can find the 3mm/2mm/1mm etc (W0142GM,W0143GM,W0145GM)
I went with the ones from TLR there is .5mm in their shim set. Plus I had them already. TLR6019
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