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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 08-16-2013, 07:32 AM   #7876
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Quote:
Originally Posted by kyoshoracer77 View Post
part is the part number on them???? or are they custom drilled pistons??
Ghea has theirs, not sure of the part number but you can find it on AMain. Losi 55's are basically 4x1.3. They are just a hair different.


Drill Bit size Decimal value
1.3mm 1.3005
55 1.3208
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Last edited by Bob Barry; 08-16-2013 at 10:52 AM.
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Old 08-16-2013, 10:43 AM   #7877
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The ghea are machined and the losi are molded. Fit and quality is much higher for the gheas. And that's what we're all here for right?
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Old 08-16-2013, 12:33 PM   #7878
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Kraig rocks, thanks!

/rant-on I get annoyed by the random people who don't care to read 5-6 pages back and just ask the same repetitive questions. /rant-off
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Old 08-16-2013, 12:58 PM   #7879
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Originally Posted by Kraig View Post
I answered your questions above.

One thing to keep an eye on his the front hinge pin brace. If you take some hard or have some weird landings it may bend. They did redesign this part and the new ones have a line in them right in the middle. I don't know if this new part made it into the kits or not but the part number is KYOUM720B.

Have fun!
All new kits should have the new brace in them. It is a stronger aluminum. Haven't had any bend since. Just make sure you don't over tighten the front bumper or it will fall off. I actually had one of the new ones fall of right before we rebuilt the track. Couldn't find it and we tilled up the track that night. After rebuilding the track and packing it we and a practice day before a big race. Half way through the day as I was watering I found it pack into one of the jumps. It was still straight and on working on the car.
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Old 08-17-2013, 12:23 PM   #7880
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The new brace will bend..
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Old 08-17-2013, 01:21 PM   #7881
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The new brace will bend..
I never said it wouldn't. Just saying mine hasn't. They are less likely to bend then the old ones.
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Old 08-18-2013, 05:47 PM   #7882
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I am getting ready go start running a blinky class and need somw help. Was wondering if u guys can give me some ideas on what you have done to lighten your drivetrain? I already put the avid top shaft and triad slipper on but would love to hear other ideas. I would love to find some lightened outdrives if anyone knows where u can buy them

Thx in advance!
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Old 08-18-2013, 05:53 PM   #7883
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The car is plenty fast gearing right in blinky, only mod I have done is I run a slipper eliminator. If you want to get crazy you could replace all turnbuckles and screws with titanium to shave some weight off and get metal shielded or ceramic bearings and replace the grease with oil.
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Old 08-18-2013, 06:31 PM   #7884
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Originally Posted by Life_livin View Post
The car is plenty fast gearing right in blinky, only mod I have done is I run a slipper eliminator. If you want to get crazy you could replace all turnbuckles and screws with titanium to shave some weight off and get metal shielded or ceramic bearings and replace the grease with oil.
I actually have done all the things u suggested, just am looking to lighten the rotating mass a little more. What slipper eliminator did u use?
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Old 08-18-2013, 06:59 PM   #7885
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I used the one for the b4 by speedy racing. http://www.speedysracingparts.com/As...eliminator.htm
It will also work with the stock top shaft.
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Old 08-18-2013, 07:09 PM   #7886
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where you mount the camber link upfront changes camber gain correct? which way is more camber the outside hole?
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Old 08-18-2013, 07:13 PM   #7887
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Originally Posted by Life_livin View Post
I used the one for the b4 by speedy racing. http://www.speedysracingparts.com/As...eliminator.htm
It will also work with the stock top shaft.
I have never used one of these b4 but it looks interesting. Do u know if it is lighter than the avid top shaft and triad slipper combo?
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Old 08-18-2013, 07:37 PM   #7888
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I drove a couple of rb6 buggies over the weekend. I currently run a 22. I thought the cars jumped and landed poorly and bump handling was nothing to write home about either. After working on the cars and doing some talking to the guys who run them. I am wondering why the cars run so little droop? The guys said most of the set up sheets are like that. I just dont remember my rb5 jumping and landing/ bottoming so easily. 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?
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Old 08-18-2013, 07:59 PM   #7889
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I drove a couple of rb6 buggies over the weekend. I currently run a 22. I thought the cars jumped and landed poorly and bump handling was nothing to write home about either. After working on the cars and doing some talking to the guys who run them. I am wondering why the cars run so little droop? The guys said most of the set up sheets are like that. I just dont remember my rb5 jumping and landing/ bottoming so easily. 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?
my guess is that the car wasn't setup properly because my car's strength is handling the jumps and rough stuff.
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Old 08-18-2013, 08:05 PM   #7890
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^that's what I am thinking mine barely ever bottoms out
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