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Kyosho Ultima RB6 & RB6.6 Car Thread

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Old 12-21-2016, 08:46 AM   -   Wikipost
R/C Tech ForumsThread 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 11-02-2014, 04:57 AM
  #11011  
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Originally Posted by MrHistory
I'm installing the MIP pucks drivetrain. Do I use the brass collars between knuckle bearings?
Are you talking about the crush sleeve in the hub? If so you'll want to install it so the bearings don't bind when you tighten down the wheel nut. I just ran into the same issue last weekened. Haha.
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Old 11-02-2014, 06:22 AM
  #11012  
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Originally Posted by Teufel Racing
Bind with those axles? How so?
Dog bone plunge. Its not bad bind. Just different characteristics on how it drives under acceleration.
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Old 11-02-2014, 06:37 AM
  #11013  
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Originally Posted by MrHistory
I'm installing the MIP pucks drivetrain. Do I use the brass collars between knuckle bearings?
You still want to use the brass collars. I'm running the same mip pucks system in 17.5. Definitely made a difference in acceleration out of corners. Another plus is the axles are nice and long, don't have to worry about your wheel falling off.
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Old 11-02-2014, 08:16 AM
  #11014  
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The gear diff sucked, I had 7k and it leaked out after 1 run lol
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Old 11-02-2014, 08:18 AM
  #11015  
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Originally Posted by Teufel Racing
Bind with those axles? How so?
More dogbone plunge.
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Old 11-02-2014, 12:38 PM
  #11016  
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I picked up one of these awesome buggies. It was a toss up between the RB6 and the AE B5M. I think the RB6 is a better buggy so that is why I picked it over the B5M. I'm kinda getting sick of the SCT scene so I'm hoping next year at the track that I race will have more 1/10 buggies. Right now everybody is running 1/8 buggy and 4wd SCT. There is a 2wd class but still only a handful of people are running buggies. What do I need to know about this buggy. I can still run a few races before the season is over, then I have all winter to tune it up for the next season.
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Old 11-02-2014, 03:29 PM
  #11017  
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To run the 521 arms do you really need all the parts listed on the first page?
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Old 11-02-2014, 05:19 PM
  #11018  
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Has anyone had issues with the schelle steering rack combined with j concept steering arms? The screws that mate the rack to the arms keep backing out on me even with a dab of blue locktite. Any advice is appreciated
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Old 11-02-2014, 05:29 PM
  #11019  
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Just wanted to give everyone an update on the Zack Rogers mm setup... in short. It's AWESOME!! I thought I had my car pretty dialed with the straight RB5 rear arms but this blows my old setup away. Incredible forward bite without giving up its natural cornering ability. Thank you Zack!
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Old 11-02-2014, 07:27 PM
  #11020  
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Originally Posted by RBraswell
Has anyone had issues with the schelle steering rack combined with j concept steering arms? The screws that mate the rack to the arms keep backing out on me even with a dab of blue locktite. Any advice is appreciated
I haven't had problems yet. I would clean them with alcohol then put a dab of blue loctite and see what happens. Cleaning the screws before hand does wonders.
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Old 11-02-2014, 07:29 PM
  #11021  
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Thanks for answering my previous question guys. Got the car about ready.

One thing I want for this winter is an AC dual charger because Id like to have less crap to lug to the track and will be running two classes-2wd and 4wd buggy.

I really like this charger but there is very little discussion on rctech and hope someone can just tell me it's great because I like the small size and power for an AC unit:

Elangears Elan R X2 Dual Charger LIPO NIMH AC/DC USB 180W Power Supply

I have no idea why all the charger makers don't design their units vertically to save pit space, but until I am a charger designer for some company (ha!) I guess I will have to get what I can get.
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Old 11-02-2014, 07:34 PM
  #11022  
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Originally Posted by Holmberg418
Dog bone plunge. Its not bad bind. Just different characteristics on how it drives under acceleration.
Originally Posted by K_King
More dogbone plunge.

I see what you guys are saying, but need a little more info here. Reason is that I have the 2mm of spacers on the outside of the rear hub for full track width. Leaving the back side of the hub just as it would be with the stock bones and axle stubs, so unless I am missing something, the dog bone plunge should be the exact same as the stock would be when running the D in/D in. I can/could see what you guys mean if I had the 2mm spacers on the back side of the rear hub, which would push the bones 2mm further and for sure bind. Which I suppose one couple opt for the same 2mm longer axle stubs and run the 62.5 bones and that should give a total plunge of 1mm less than stock or just the stock axle stubs and bones, if trying to run both the narrow pivot and narrow track width. I did try that as well, just to see if it would work.
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Old 11-02-2014, 07:51 PM
  #11023  
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Thumbs up 521 arms

Originally Posted by 3srcracing
To run the 521 arms do you really need all the parts listed on the first page?
You can avoid using the la229 Kyosho Rear Outer Suspension Shaft
KYO1-S12605H & Kyosho 2.6x5mm Button Head Screw by just drilling out the 521 arms and mounting them like the stock arms arm mounted. You will need to use some 1mm spacers to shim the stock outer suspension shaft, as for eyelets I think I am using the stock or med eyelets.
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Old 11-02-2014, 09:34 PM
  #11024  
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Originally Posted by MrHistory
Thanks for answering my previous question guys. Got the car about ready.

One thing I want for this winter is an AC dual charger because Id like to have less crap to lug to the track and will be running two classes-2wd and 4wd buggy.

I really like this charger but there is very little discussion on rctech and hope someone can just tell me it's great because I like the small size and power for an AC unit:

Elangears Elan R X2 Dual Charger LIPO NIMH AC/DC USB 180W Power Supply

I have no idea why all the charger makers don't design their units vertically to save pit space, but until I am a charger designer for some company (ha!) I guess I will have to get what I can get.
well if you go with the orion touch duo, you know you can't lose. thou this one you posted here has a lil more power
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Old 11-03-2014, 04:35 AM
  #11025  
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Originally Posted by MrHistory
...
I have no idea why all the charger makers don't design their units vertically to save pit space, but until I am a charger designer for some company (ha!) I guess I will have to get what I can get.
Graupner Polaron
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