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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 10-29-2012, 09:04 AM   #2176
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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.
yes you can i use them. you can't use the steel bushings thou use Kyosho Special Suspension Bushing (ZX5, RB5, RT5, SC, DB) - Package of 8 part # KYOLAW32
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Old 10-29-2012, 09:05 AM   #2177
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does anyone have a good start for mid on dirt i saw the one a few pages back but i'm looking for as much data as possible
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Old 10-29-2012, 09:09 AM   #2178
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Originally Posted by 305M3 View Post
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.
Just remember you'll need to retune because the kit uses the wide suspension mounts, and with the STRC parts your going to a narrow rear end. If you used the parts they tell you to in the manual that is.
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Old 10-29-2012, 09:10 AM   #2179
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Originally Posted by Cpt.America View Post
What does this post even mean?
He doesn't even know
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Old 10-29-2012, 09:16 AM   #2180
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TQ and win Sat night club racing in 17.5... car is unstoppable.
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Old 10-29-2012, 09:16 AM   #2181
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Originally Posted by Kraig View Post
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?
The Lipo holder is raised about 5mm, so the foam gets stuck under that and does not seem to go anywhere. Since I am running the battery a different way, most people will not have this issue. If you choose to run your battery this way and wanted one of his battery straps, you can just ask him to put that "tongue" in front to hold the foam. He would have no problems with that...
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Old 10-29-2012, 09:16 AM   #2182
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Originally Posted by jpcopeland1 View Post
Just remember you'll need to retune because the kit uses the wide suspension mounts, and with the STRC parts your going to a narrow rear end.
Thank you and fastestwon - thanks.

By retune, what in particular? My apologies for such a general question, but this is my first foray in the 1/10 buggy scene. Being a nitro 1/8 buggy and truggy guy, I'm amazed at how changing a 1mm collar - for example - will change the set up on this thing.
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Old 10-29-2012, 09:20 AM   #2183
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Originally Posted by 305M3 View Post
Thank you and fastestwon - thanks.

By retune, what in particular? My apologies for such a general question, but this is my first foray in the 1/10 buggy scene. Being a nitro 1/8 buggy and truggy guy, I'm amazed at how changing a 1mm collar - for example - will change the set up on this thing.
the narrow gives more rear bite then the wide
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Old 10-29-2012, 09:22 AM   #2184
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Originally Posted by 305M3 View Post
Thank you and fastestwon - thanks.

By retune, what in particular? My apologies for such a general question, but this is my first foray in the 1/10 buggy scene. Being a nitro 1/8 buggy and truggy guy, I'm amazed at how changing a 1mm collar - for example - will change the set up on this thing.
This car is very sensitive to setup changes. By retuning I mean your going to be putting on a rear end that is 1mm narrow on each side of the car. What that does to your setup you'll have to see and compensate for. my guess would be a loss of some rear stability. Geometry would be off from stock on the entire rear end of the car.
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Old 10-29-2012, 09:32 AM   #2185
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Originally Posted by t8rtot View Post
does anyone have a good start for mid on dirt i saw the one a few pages back but i'm looking for as much data as possible
Honestly, start with the stock setup, and put 35wt shock oil in the front and 27.5 in the rear. Then tune from there. You really just need to change a couple camber links after that.

Do you plan on making the trip out to fastlane raceway in blue springs any time soon?
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Old 10-29-2012, 09:51 AM   #2186
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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....

















Front shock tower is pre-production?
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Old 10-29-2012, 09:56 AM   #2187
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Finally, completed this new baby of mine! As always I took my time with the build up so that I can get to fully enjoy the whole process and experience. As usual with Kyosho, everything fit nicely.

Try to keep the whole wiring as neat as possible.


Follow Jared style with the placement of ESC and receiver


Happy with the soldering work, glad I still can remember how to do it correctly... (I guess)


Finally, see what happen to my friend new RB6, he took it out last Saturday and after a few run dented the chassis quite badly and today he tired to bend them back out and that's what he got.

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Old 10-29-2012, 10:17 AM   #2188
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i like the idea of silicone, wax or grease the trani bottom and silicone the recessed area that way it doesn't stick to the trani bottom.

any word on the Avid Triad slipper for the RB6?
ems
We should receive the parts this week, so after some photos and QC, they'll be online by next week. We will also have a fresh batch of Triad clutch sets for order as well.
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Old 10-29-2012, 10:20 AM   #2189
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Originally Posted by jpcopeland1 View Post
This car is very sensitive to setup changes. By retuning I mean your going to be putting on a rear end that is 1mm narrow on each side of the car. What that does to your setup you'll have to see and compensate for. my guess would be a loss of some rear stability. Geometry would be off from stock on the entire rear end of the car.
Rear stability... Not something I would want to give up. I'll just go w/ stock and focus more on staying off the pipe.

Thanks all.
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Old 10-29-2012, 10:32 AM   #2190
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Default race video from sunday

http://www.youtube.com/watch?v=ovWZ7...ature=youtu.be
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