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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 12-18-2013, 10:02 AM   #9016
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um521-1 is the part number. No need to change anything else. Keep in mind that this arm does not require shims on the inner suspension pins like the stock arm does.
Just to be clear, your talking about the um713 shim and not the um508c shim right?
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Old 12-18-2013, 10:08 AM   #9017
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um521-1 is the part number. No need to change anything else. Keep in mind that this arm does not require shims on the inner suspension pins like the stock arm does.
The UM521-1 also requires a set of outer hinge pins or you can ream the outer hole on the arm where it captures the hinge pin and use the RB6 outer hinge pin with 2 2mm spacers. Really easy mod.
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Old 12-18-2013, 10:09 AM   #9018
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gear diff - 2,000 weight oil a good start point? thanks.
Would this be for mod or stock? What kind of grip are you running on? Tires and sauce?
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Old 12-18-2013, 10:10 AM   #9019
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I was lucky enough to get to drive my first RB6 last night at the local club race. It was a stock buggy in mid motor layout. Only got to run one pack before racing and was very impressed with the performance. TQ and won last night with 18 guys running stock. Needless to say I will running a RB6 next year in mod. We are lucky enough to have Team Kyosho at our home track and pretty much everyone runs Andy Dibrio set-up. So planted and turns awesome.

Set-up is on our site here. http://www.thebigrc.com/?p=5070
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Old 12-18-2013, 10:54 AM   #9020
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cameron, were all the guys in p-town running the saddles as well too? or shorties as well?
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Old 12-18-2013, 11:06 AM   #9021
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cameron, were all the guys in p-town running the saddles as well too? or shorties as well?
My loaner had a short pack in place with everything else the same. Most everyone runs the saddles though. The saddles add some weight in the center of the chassis to help give the more plated feel. I will be going with saddles. Personal preference but Andy was top ten at the Spectrum race too and all he changed was tires. Its a real good starting set-up for the regular racer guy.
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Old 12-18-2013, 03:13 PM   #9022
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I'm looking forward to trying out the new chassis. Should be here Friday.
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Old 12-18-2013, 03:22 PM   #9023
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I'm looking forward to trying out the new chassis. Should be here Friday.
Didn't know they came out with a new one.. I'll check it out when I see you at sdrc
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Old 12-18-2013, 03:39 PM   #9024
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It's a lighter chassis by 25g. More milling so it flexes more for more traction.
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Old 12-18-2013, 03:51 PM   #9025
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Quote:
Originally Posted by K_King View Post
I'm looking forward to trying out the new chassis. Should be here Friday.
Oh you are such a tease. New part number?

So if you wanted to go with the 521-1 arm with no modifications you would need to get the following
UM521-1 Kyosho SP "Type B" Middle Suspension Arm Set, 2 of them
la229 Kyosho Rear Outer Suspension Shaft
KYO1-S12605H Kyosho 2.6x5mm Button Head Screw
OW5015 Kyosho Short Big Bore Shock End Set (4)

If you wanted to use the RB6 rear suspension shaft then you would have to drill out the arm like sir_thomas explained.

I think I got it right now.

Or you could just use the stock arms and see how that feels.
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Old 12-18-2013, 03:57 PM   #9026
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UMW720
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Old 12-18-2013, 04:06 PM   #9027
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Quote:
Originally Posted by Kraig View Post
Oh you are such a tease. New part number?

So if you wanted to go with the 521-1 arm with no modifications you would need to get the following
UM521-1 Kyosho SP "Type B" Middle Suspension Arm Set, 2 of them
la229 Kyosho Rear Outer Suspension Shaft
KYO1-S12605H Kyosho 2.6x5mm Button Head Screw
OW5015 Kyosho Short Big Bore Shock End Set (4)

If you wanted to use the RB6 rear suspension shaft then you would have to drill out the arm like sir_thomas explained.

I think I got it right now.

Or you could just use the stock arms and see how that feels.

maybe thread owner can stick this to post #1
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Old 12-18-2013, 06:57 PM   #9028
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UMW720
Looks nice!
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Kyosho Ultima RB6 & RB6.6 Car Thread-pc1_l.jpg  
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Old 12-18-2013, 07:21 PM   #9029
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maybe thread owner can stick this to post #1
I have added it.
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Old 12-18-2013, 07:23 PM   #9030
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Looks nice!
Looks like theyve added an extra set of holes for the rear battery brace!
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