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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
Please read: This is a community-maintained wiki post containing the most important information from this thread. You may edit the Wiki once you have been a member for 90 days and have made 90 posts.
 
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 01-12-2014, 05:51 AM   #9346
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Mid motor or rear?
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Old 01-12-2014, 06:49 AM   #9347
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Originally Posted by nickdawg18 View Post
Mid motor or rear?
Rear. I previously used the older RB5 wide alum hangers. Switched to the new ones with plastic inserts and it's binding (out-B). Any ideas?
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Old 01-12-2014, 06:55 AM   #9348
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Though I'm using these mounts in mid configuration (707 not 706) I used the steel bushings and the rear arms are completely free. Are you sure the plastic bushings aren't deforming?
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Old 01-12-2014, 07:38 AM   #9349
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Quote:
Originally Posted by Tom87 View Post
Well a hobby shop in japan told me yesterday that they are not released yet and they can't order them, but should be out be the end of the month.

Seems some people got lucky and scored some from kyosho america. I say they will be everywhere by February.
They're released, but sold out quickly.
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Old 01-12-2014, 05:07 PM   #9350
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Originally Posted by kineteks View Post
Though I'm using these mounts in mid configuration (707 not 706) I used the steel bushings and the rear arms are completely free. Are you sure the plastic bushings aren't deforming?
Thanks. The delrins are new so no deforming. I will try the steel bushings.

I am using the 521-1 arms so I'll also try removing the 0.3mm hinge pin shim and see if they loosen up. Cheers,
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Old 01-12-2014, 05:50 PM   #9351
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i know that with the stock hangers, the 521-1 arms dont use any hinge pin shims.
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Old 01-12-2014, 07:48 PM   #9352
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Quote:
Originally Posted by Speedychris22 View Post
Kevin, I'm using ur setup for my mid motor car (the one with rt6 mod for the battery) nd the only thing I'm lacking is corner exit traction. What can I due to help rear end traction. The front end is great! Thanks
I also would like to know how to gain more rear traction?
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Old 01-12-2014, 08:42 PM   #9353
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I also would like to know how to gain more rear traction?
One thing I did today that helped was go to 3.5 toe in. Also went pink front springs. I know sounds crazy but it worked
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Old 01-12-2014, 09:19 PM   #9354
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Quote:
Originally Posted by Speedychris22 View Post
Kevin, I'm using ur setup for my mid motor car (the one with rt6 mod for the battery) nd the only thing I'm lacking is corner exit traction. What can I due to help rear end traction. The front end is great! Thanks
Try adding .5 deg toe.
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Old 01-12-2014, 09:21 PM   #9355
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Originally Posted by Speedychris22 View Post
One thing I did today that helped was go to 3.5 toe in. Also went pink front springs. I know sounds crazy but it worked
Try my latest one here.

https://dl.dropboxusercontent.com/u/...Dec%202013.pdf
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Old 01-12-2014, 09:43 PM   #9356
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Looks good. Waiting on that new chassis to come out. Got to put that in.
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Old 01-13-2014, 03:39 AM   #9357
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+1 on the 3.5 rear toe.
It was one of the first things I did with mine and liked the feel
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Old 01-13-2014, 07:15 AM   #9358
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Just wanna say that my buggy was absolutely dialed today. I turned an impossible 16 laps today on a track that hardly gives up 15's! Second place turned 14
Strap a 17.5 in it and come run stock buggy with us @ SMACtrac!
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Old 01-13-2014, 08:18 AM   #9359
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Anyone know where to get Kyosho parts "on the cheap" in Canada?
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Last edited by codeman; 01-13-2014 at 08:56 AM. Reason: orig. post just asking about springs; but parts in general would be nice :)
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Old 01-13-2014, 08:24 AM   #9360
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^^^

Shoot me a pm. I think I have and don't mind shipping to you.
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