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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 04-21-2014, 10:16 PM   #10306
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Quote:
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Yes the springs are pricey but I have had the car since it released. All I ever use are front....pink or white. Rear....kit spring, gold or white. I have all the rest but for the springs I listed should cover anything from loose dirt to sugared.
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Agreed. White or pink front and white,red,or gold rears you should be covered. That's all I own.
agreed fellas but we're still talking $65+ for three sets of springs!


I have all the springs you guys mentioned.......but i still feel like it was money wasted........
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Old 04-22-2014, 12:11 AM   #10307
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That is sweet looking. What would the street price be?
Currently, I am getting it quoted. My estimation is around $40 +/- 10%. The price varies depending on quantity. That's why I am asking who's interested.
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Old 04-22-2014, 08:36 AM   #10308
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Ok getting ready for outdoor season and I have the 705 and 707 sus hangers coming , any suggestions for starting point with them ? Track is med bite . yes I'm going to try mm . thnx
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Old 04-22-2014, 01:37 PM   #10309
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Cool design but, though I know that's a killer epoxy, I'd think a two piece design with a 7075 aluminum pad could be nearly as light, cheaper to make and maybe even stronger especially if some of the bonds turned out to be less than perfect.
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Old 04-22-2014, 03:38 PM   #10310
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Cool design but, though I know that's a killer epoxy, I'd think a two piece design with a 7075 aluminum pad could be nearly as light, cheaper to make and maybe even stronger especially if some of the bonds turned out to be less than perfect.
I am sorry, but I have to disagree. Weight wise, 7075 aluminum version weighs 33.5 grams (without screws holding together); CF version weighs 23.9 grams. Cost wise, I did quote for both versions and the CF version is actually less expensive than the aluminum version without anodizing. Strength wise, the epoxy is a overkill and is actually used for airplanes, a five-minute epoxy from Home Depot is sufficient for this application.



Here is a cross section of the proposed CF RM rear shock tower. I understand that its difficult to see, but the vertical piece is actually inserted into the horizontal piece when bonded. This structure with the two ribs on the side will be sufficient to withstand a lot of impact. Especially when the shock tower is connected to the rear gearbox.

If it were to distort upon an impact, the distortion point would be where the shock is mounting to the tower. CF have a tendency to bounce back as where once aluminum bends, it's bent.
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Old 04-22-2014, 03:52 PM   #10311
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Plastic composite is as light (with glass fill), is just slightly weaker than cf, does not bend, does not delaminate like raw cf sheets and is cheaper and available from kyosho. Why upgrade the factory part except for bling?

I am however partial to cf chassis. It does allow a lot more tuning with the weave/thickness chosen. The onroad TC guys get all the good stuff. With aluminum its a lot more labour intensive with milling pockets out etc.
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Old 04-22-2014, 04:39 PM   #10312
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I went with the LF springs from TLR. I think $50 and you get 4 pairs of fronts and 5 pairs of rears. Cheaper and the LF springs are similar to the kyosho springs.
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Old 04-22-2014, 05:09 PM   #10313
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agreed fellas but we're still talking $65+ for three sets of springs!


I have all the springs you guys mentioned.......but i still feel like it was money wasted........
Have you tried different pistons or oil weights? I don't think it's money wasted,bottom line,Kyosho parts are expensive. I think we all can agree on that.
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Old 04-22-2014, 05:18 PM   #10314
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I've tried a lot of pistons for a looser track I like the kit pistons and I'm currently running 35 fr and 30 rr tl oil and kit springs it rocks just my .02
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Old 04-23-2014, 10:01 AM   #10315
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QIMB528, no disrespect meant and I assumed you'd keyed the tower to the base, the ribs too? I wasn't clear either in that I was referring to a CF tower w/7075 base. Not a criticism just an opinion. As I said before, cool part.
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Old 04-23-2014, 11:41 AM   #10316
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I just picked up an MP9 and I am thinking about an RB6. Do you suggest buying a new kit or a used one on here? I have also heard that I should wait two months for the new Worlds kit coming out, and I have heard that the difference in cars is not much. Any advice is greatly appreciated.
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Old 04-23-2014, 03:37 PM   #10317
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I like it. Just acquired my RB6!! Subscribed
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Old 04-23-2014, 05:20 PM   #10318
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Quote:
Originally Posted by Jamiez View Post
I just picked up an MP9 and I am thinking about an RB6. Do you suggest buying a new kit or a used one on here? I have also heard that I should wait two months for the new Worlds kit coming out, and I have heard that the difference in cars is not much. Any advice is greatly appreciated.
If you find a good deal on a used car,snatch it up,they're out there. Either way,new or used,the car is bad ass.

And don't think I've heard anything on a Worlds car coming out in a couple months. Only thing I have heard is maybe a ZX6 around August.
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Old 04-23-2014, 05:22 PM   #10319
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And while I'm on here,what does turning the steering rack around with the arrow back do? Saw it on Cody Kings worlds setup.
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Old 04-23-2014, 05:36 PM   #10320
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And while I'm on here,what does turning the steering rack around with the arrow back do? Saw it on Cody Kings worlds setup.
Yep always run it that way. Smoothens the steering all through the corner entry, mid and exit. Kinda like more toe out front without scrubbing straightline speed. The kit way makes it a bit darty so end up loosing some speed mid corner trying to correct.
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