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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 01-27-2013, 01:17 PM   #4771
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U have a link? I would love to try it
Here you go...... http://www.petitrc.com/setup/kyosho/...SetupSheet.pdf

Set it up just like the sheet says but for even more steering use 0 degree caster blocks, try 1 or 2 degrees of toe out, and don't add any bump steer spacers. Also don't add any extra weight anywhere on the car because your running 17.5. Should have quite a bit of steering (probably too much, but you can take it out slowly till you like it) just as long as your running the right tires for the surface you run on.
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Old 01-27-2013, 01:21 PM   #4772
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Here you go...... http://www.petitrc.com/setup/kyosho/...SetupSheet.pdf

Set it up just like the sheet says but use 0 degree caster blocks, don't add any bump steer spacers, and don't add any extra weight anywhere on the car because your running 17.5. Should have quite a bit of steering as long as your running the right tires for the surface you run on.
Which are the defaulted blocks on the kit?
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Old 01-27-2013, 01:40 PM   #4773
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picure is somewhat low quality....o' well


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Old 01-27-2013, 01:41 PM   #4774
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Which are the defaulted blocks on the kit?


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Old 01-27-2013, 01:48 PM   #4775
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For the caster (um721), how do you choose 25 or 30 deg? I bought the car used, so not for sure. Which option gives more steering?
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Old 01-27-2013, 02:03 PM   #4776
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The block that the front inner hinge pins go through can be reversed. Put in in one way and you've got 25* put it in the other and you've got 30*. Have you looked at a manual?

The orientation of the block depends on where you want steering. I'd start with the 25* orientation, and start changing caster inserts on the hubs to suit.
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Old 01-27-2013, 02:25 PM   #4777
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The block that the front inner hinge pins go through can be reversed. Put in in one way and you've got 25* put it in the other and you've got 30*. Have you looked at a manual?

The orientation of the block depends on where you want steering. I'd start with the 25* orientation, and start changing caster inserts on the hubs to suit.
One again, new to the buggy. What are the inserts in the hubs?
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Old 01-27-2013, 02:33 PM   #4778
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One again, new to the buggy. What are the inserts in the hubs?
kit setup calls for 0 in to give a narrow track 4 in gives you a wide track
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Old 01-27-2013, 02:38 PM   #4779
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Kit comes with 0, 2 and 4 degree caster inserts. all of them can be put switched to a narrow or wider insert. Kit setup is narrow 0. Be careful cause you can actually put them in wrong and go -2 and -4.
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Old 01-27-2013, 02:59 PM   #4780
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My car has 30 deg front bulk head and RF rear blocks. Is this why don't have a lot of steering?
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Old 01-27-2013, 03:01 PM   #4781
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New or not, you should at the very least look through the manual. It'll answer just about everything you've asked thus far.

Aside from the hub inserts it's about the same as any other recent K car. I just wish they'd come up with an easier way to change anti-squat. I hate sliding those spacers in there.

Lower caster generally makes initial steering more responsive. Where are you looking for steering? On power? Entering a turn? Middle? Exiting? Have you compared your setup to any others? What surface? What tires? What length rod-ends are you running on the shocks?
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Old 01-27-2013, 03:04 PM   #4782
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What did you notice in handling differences?
the car is planted feels like a cross from RM to MM . it is lighter but feels heavy and rotates very nice . i let some other guys drive it and and they all loved how well it powers out of the corner and still has a lot of turn in as well . my car was 1653 grams after the mods it is 1521 grams
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Old 01-27-2013, 03:07 PM   #4783
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Quote:
Originally Posted by t0p_sh0tta View Post
New or not, you should at the very least look through the manual. It'll answer just about everything you've asked thus far.

Aside from the hub inserts it's about the same as any other recent K car. I just wish they'd come up with an easier way to change anti-squat. I hate sliding those spacers in there.

Lower caster generally makes initial steering more responsive. Where are you looking for steering? On power? Entering a turn? Middle? Exiting? Have you compared your setup to any others? What surface? What tires? What length rod-ends are you running on the shocks?
Cut out part of the hole so you can then just loosen the screws a little bit and then slide the piece in between the chassis and the rear block. Does that make sense?
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Old 01-27-2013, 03:24 PM   #4784
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the car is planted feels like a cross from RM to MM . it is lighter but feels heavy and rotates very nice . i let some other guys drive it and and they all loved how well it powers out of the corner and still has a lot of turn in as well . my car was 1653 grams after the mods it is 1521 grams
I imagine its rolling more and putting more weight on the outside wheels providing more exit steering. Hmmm, might have to try that..
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Old 01-27-2013, 03:27 PM   #4785
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Anyone want to trade my rear alum RF for alum RF2?
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