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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 01-29-2013, 04:45 PM   #4861
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What's the difference between the 521-01 arms, WC arms and the NCG arms (yes I know the drop down..)

I run a FS2 SP and DB1, so have plenty of rear arms.
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Old 01-29-2013, 06:32 PM   #4862
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Originally Posted by mikeyscott View Post
What's the difference between the 521-01 arms, WC arms and the NCG arms (yes I know the drop down..)

I run a FS2 SP and DB1, so have plenty of rear arms.
The 01 has 1 hole that is in the middle of where the 2 holes are on the normal arm
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Old 01-29-2013, 06:39 PM   #4863
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It is common practice to run 521 arms with the narrow holders, and 521-01 arms with wide holders? I'm assuming the one hole 521-01 is needed to offset the wider holders, so I can run the same shock ball ends, whenever one runs the outer hole on the 521 with narrow holders?

Any situations where I need 521 with wide, or 521-01 with narrow? Thanks,
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Old 01-29-2013, 10:14 PM   #4864
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I need some blue .5 Hubs.. Pm me if you have some I can buy
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Old 01-29-2013, 10:17 PM   #4865
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Finished up the build of my RB6. Superb. The first 1/10 K car I have built after running AE for as long as I can remember. The shocks are even better than my Tki3. Lunsford turnbuckles and Ti screws throughout. just waiting on the carbon battery braces to finish it off

First run will be when I get to the USA in 10 days





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Old 01-29-2013, 10:18 PM   #4866
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Originally Posted by C_Money View Post
I need some blue .5 Hubs.. Pm me if you have some I can buy
I have a set of 1 deg blue hubs I would sell..
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Old 01-29-2013, 10:49 PM   #4867
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Originally Posted by C_Money View Post
I need some blue .5 Hubs.. Pm me if you have some I can buy
Matt has exactly what you need for a GREAT price!
http://www.rctech.net/forum/r-c-item...5-rt5-scr.html
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Old 01-29-2013, 10:58 PM   #4868
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Originally Posted by BranVita View Post
Matt has exactly what you need for a GREAT price!
http://www.rctech.net/forum/r-c-item...5-rt5-scr.html
Seen those.. They look a little beat though
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Old 01-30-2013, 07:22 AM   #4869
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Default Ti screws

Ben73 - very clean looking build, nice! Curious what titanium screw kit you used and where to purchase in the states?
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Old 01-30-2013, 07:50 AM   #4870
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Originally Posted by flybyublue View Post
Ben73 - very clean looking build, nice! Curious what titanium screw kit you used and where to purchase in the states?
I buy all my titanium in bulk through

http://www.titaniumscrews.net

I got on to them last year because I wanted to kit my Tki3 all Ti - the price is really good. And the quality is amazing. The only issue is its usually min 50 pieces per size. But when you are doing 4 1/8th cars per year to add a couple of 1/10th makes it cost effective.
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Old 01-30-2013, 08:55 AM   #4871
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Quote:
Originally Posted by gelshocker View Post
It is common practice to run 521 arms with the narrow holders, and 521-01 arms with wide holders? I'm assuming the one hole 521-01 is needed to offset the wider holders, so I can run the same shock ball ends, whenever one runs the outer hole on the 521 with narrow holders?

Any situations where I need 521 with wide, or 521-01 with narrow? Thanks,
Either arm can be used with either the wide or narrow holders. These r just different tuning options. The 521 arm has 2 holes and the 521-01 has one hole. The first page has a good explanation of the difference between the narrow and wide holders
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Old 01-30-2013, 10:13 AM   #4872
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What's the part number for the crush tube that goes between the two bearings in the rear hubs? Not finding it in my manual.
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Old 01-30-2013, 10:14 AM   #4873
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Originally Posted by fullsyzz View Post
What's the part number for the crush tube that goes between the two bearings in the rear hubs? Not finding it in my manual.

KYOFU666

Hahahah
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Old 01-30-2013, 10:14 AM   #4874
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Anybody know where to get the wide rear suspension hangers in aluminum? Seem to be on backorder everywhere
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Old 01-30-2013, 10:17 AM   #4875
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Quote:
Originally Posted by fullsyzz View Post
What's the part number for the crush tube that goes between the two bearings in the rear hubs? Not finding it in my manual.
LA253

Always check the exploded diagrams for all the various part numbers. Much easier to find them on that than the full parts list.
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