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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 06-17-2013, 10:56 AM   #7291
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Quote:
Originally Posted by mlinder View Post
Oh, thanks Chris for that link. So I use these axles with them?

http://www.amainhobbies.com/product_...heel-Shaft-RB5

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Yes that's the one
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Old 06-17-2013, 11:21 AM   #7292
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on the bench or on the track?

It's usually due to the servo imo. I'm running an RSX one10 LP and it usually is about half a deg out trying to centre on the setup station, but centres properly in practice.

Check your slop anyway. From memory the Exotek rack needed a couple of shims between the rack and the cranks.
On the bench and track, it doesn't want to go to same spot every time.

Seems like something is hitting. I grinned the nose piece per the instructions, however they weren't very clear.

What shims are you referring to so I can confirm
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Old 06-17-2013, 11:47 AM   #7293
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I'm trying to identify an alum servo horn to replace the stock plastic piece. I've discovered that not all aftermarket servo horns will work as the movement may be hindered due to the design. Has anyone upgraded to an alum servo horn that fits/works without too much modification and maintains the full range of motion? Does Kyosho make an hop up alum servo horn for the RB6? Thanks in advance!!
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Old 06-17-2013, 11:57 AM   #7294
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Kyosho makes one for the zx5 that works. I hear the TLR 22 aluminum horn fits but I can't put TLR on my car.
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Old 06-17-2013, 12:07 PM   #7295
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I'm using the TLR22 aluminum horn w/ a Spektrum 6040 servo. I had to dremel the front upper just a bit back when fitting the kit plastic horn, but the TLR horn dropped right in and seemed to be really close to the kit horn as far as geometry goes.
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Old 06-17-2013, 01:13 PM   #7296
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Personally I would advise against the al servo horn. I have had my car since it came out and have broken only 2 steering racks total and 2 plastic horns. Had I had an al servo horn on I'm sure my rack breakage would be much higher. Just food for thought something has to give on hard hits.
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Old 06-17-2013, 01:16 PM   #7297
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Thx guys!! Found both on Amain. LMK if i'm looking at the wrong items.

Kyosho

TLR22
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Old 06-17-2013, 01:35 PM   #7298
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Personally I would advise against the al servo horn. I have had my car since it came out and have broken only 2 steering racks total and 2 plastic horns. Had I had an al servo horn on I'm sure my rack breakage would be much higher. Just food for thought something has to give on hard hits.
Great point. The only reason I wanted to swap it out was due to the play that developed in the plastic unit. I had a centering problem and I discovered that it was due to a worn out servo horn. I do have the alum steering rack, so it's possible that my next weakest link may be the servo itself!
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Old 06-17-2013, 02:58 PM   #7299
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If you're running the aluminum rack and cranks I'd want the aluminum horn. Not sure what would break next after that. Maybe breaking ballstuds, steering links, or spindles? I doubt a decent servo would give out in 1/10 2wd buggy unless it was a fluke thing.
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Old 06-17-2013, 06:40 PM   #7300
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Well do you want more side bite? or do you want more forward traction? Reducing your anti-squat isn't the direction to go, if you are lacking traction in the corners.
Yes i would like more traction in the corners. I have the tire hooked up it just still wants to break free under power in turns. What do I do for hangers and toe?
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Old 06-17-2013, 08:00 PM   #7301
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Yes i would like more traction in the corners. I have the tire hooked up it just still wants to break free under power in turns. What do I do for hangers and toe?
If the track is loose their is not much you can do!! What type of surface? Is it clay hard pack, Dusty, Wet you need to give us more details to help you out...
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Old 06-17-2013, 08:40 PM   #7302
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The track is on the large side, clay with med to high grip. I have plenty of steering and forward bite. I want the car to have more cornering speed with out the rear end breaking loose and spinning out. The tires are definitely hooking up I feel it is a rear end suspension adjustment. I let a fellow racer run the car for a few laps and was told it had too much steering. I drive his car which is the same car. And it felt like it rolled forward smoother and held corners way better than mine. Does that make sense?
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Old 06-17-2013, 08:53 PM   #7303
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copy his setup?
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Old 06-17-2013, 09:03 PM   #7304
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Probably take away some steering.
If you have a lot of grip on one end it can make the other feel like it has much less.
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Old 06-17-2013, 10:19 PM   #7305
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Has anyone used parts from this company on their rb6 or 5? What are your opinions on them?

http://www.google.com/url?sa=t&rct=j...47883778,d.eWU
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