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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 10-28-2012, 10:55 PM   #2161
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Racing this week? Wed? Thurs practice and Friday race?
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Old 10-29-2012, 12:16 AM   #2162
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Quote:
Originally Posted by eper View Post
the diff before the wc kit never seemed to last to long for me so i ran the bfast which is a great diff. but to be honest the diff in my 6 is super smooth and seems to be lasting a while. I also like the new x gear grease that comes with the kit on my old diffs i ran ae grease which worked good but the new stuff seems to work great and its not ae which makes it even better
+1 on not having to use AE anything anymore.
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Old 10-29-2012, 12:38 AM   #2163
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Originally Posted by Slant EyEs View Post
So its been a while since I have posted on here, but I figured I would help out my sponsors and show off my RB6 build and what they have helped me with. Just a disclaimer, I built it the way I wanted it to look and hopefully perform to my best abilities. And in no way state that you have to do what I did. We are all adults, well most of us, and you can do whatever you like to your toys.... Period...

So with that said, enjoy, comment, flame and ask questions....

















Flame.....
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Old 10-29-2012, 03:10 AM   #2164
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you still need to change all the servo and speedo cables to black

Looks good though
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Old 10-29-2012, 03:52 AM   #2165
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First club race yesterday here in Greece with the RB6 preping for the upcoming National race and my first win since I went with Kyosho two years ago.

This car is so much easier to push than the RB5...I was cruising all day and IF I made any mistakes I could push really hard for a couple of laps and make up for the lost time!

Track was low to medium traction and I made some small changes to my base setup and the car felt just perfect...I had some push on power in the one corner exit but I quess that is down to soft rear spring (used pink to get some traction)

Great car!
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Old 10-29-2012, 04:02 AM   #2166
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care to post your setup?
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Old 10-29-2012, 04:23 AM   #2167
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care to post your setup?
Sure thing...can I just upload the pdf here? Never done it before...
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Old 10-29-2012, 06:07 AM   #2168
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Quote:
Originally Posted by jpcopeland1 View Post
I have both the vented slipper, and vented motor plate. Keeps my motor maybe 5 degrees cooler then stock. More for bling factor for me.
So no real benefit re the WC slipper.

Ran the car for the first time on damp astro in mid config and it's v nice.

Kit used
Savox 1257 servo
Sanwa 451 RX
SP LPF ESC
SP 8.5

My Orion R10 and 8.5 VST is in my DB1.
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Old 10-29-2012, 07:52 AM   #2169
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My attempt at the T-plate Chassis mod...

Kyosho Ultima RB6 & RB6.6 Car Thread-img_1078.jpg
Kyosho Ultima RB6 & RB6.6 Car Thread-img_1079.jpg
Cut down RB5 T-plate
Kyosho Ultima RB6 & RB6.6 Car Thread-img_1080.jpg
Cut down RB5 T-plate
Kyosho Ultima RB6 & RB6.6 Car Thread-img_1081.jpg
Installation
Kyosho Ultima RB6 & RB6.6 Car Thread-img_1083.jpg
Completed

Notice, There is a slight bulge to the chassis after installation. I made sure that the T-plate sit flush on the bottom of the second/lower pocket as well.
This is without shaving anything off the thickness of the T-plate.
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Old 10-29-2012, 08:04 AM   #2170
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Quote:
Originally Posted by flame56mx View Post
Looks good Jayson..
Thanks D....

Quote:
Originally Posted by K_King View Post
Racing this week? Wed? Thurs practice and Friday race?
Practice for sure....

Quote:
Originally Posted by jpcopeland1 View Post
Flame.....
HAHA!!!

Quote:
Originally Posted by steam View Post
you still need to change all the servo and speedo cables to black

Looks good though
I was thinking of doing that, but I need it to appeal to the masses. I didn't want to look to "Pro". But thanks for the idea....
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Old 10-29-2012, 08:08 AM   #2171
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Slant EyEs (Jason?): if you have any feedback to Diggity or maybe they are reading this perhaps they could put a tongue on the front of the battery strap to help keep that piece of foam in the car during violent crashes. Or is it stuck in there pretty good from the bottom?
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Old 10-29-2012, 08:11 AM   #2172
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Quote:
Originally Posted by Kooz View Post
My attempt at the T-plate Chassis mod...


Notice, There is a slight bulge to the chassis after installation. I made sure that the T-plate sit flush on the bottom of the second/lower pocket as well.
This is without shaving anything off the thickness of the T-plate.
I noticed that when I tried to do mine. The tranny was sitting up higher and if I screwed it down into the car I am sure the bulge would be present.

What we need is a small shim the thickness of the gap. Was it posted how big of a gap that is?
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Old 10-29-2012, 08:24 AM   #2173
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Quote:
Originally Posted by Kraig View Post
I noticed that when I tried to do mine. The tranny was sitting up higher and if I screwed it down into the car I am sure the bulge would be present.

What we need is a small shim the thickness of the gap. Was it posted how big of a gap that is?
Not sure but if you took a couple of thousands off the tangent of the bottom of the case you could probably get away with it. Tough to tell which part of the case is preventing a flat fit. It bulged just ever so slightly...
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Old 10-29-2012, 08:51 AM   #2174
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Saturday went and practiced track had great traction and was clipping off fast ave 15 sec laps with my T plate mod . we raced Sunday traction was down as lap times came with it . managed to Qualify 3rd in A Main pulled off the win . will have video up later . changed my colors to light blue & white with white wing. yes seems to be a very slight bulge under trans did not hurt handling thou
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Old 10-29-2012, 09:01 AM   #2175
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Caught part of a pipe last night and broke the rear pivot block part: UM508C.

Can I replace this part w/ the ST Racing Aluminum Rear Pivot Block Set that is listed for the RB5?
Part: http://www.teamstrc.com/index.php?ro...product_id=688

The RB5 part is: UM508B, which is the same as the ST Racing block. UM508C is the same as the UM508B, but has been updated for the wing mount - according to the description.

Can I use the ST Alum Rear Pivot Block set on the RB6?

Thanks.
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