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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 07-28-2013, 08:07 AM   #7696
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Originally Posted by Bob Barry View Post
More anti squat will make less weight transfer. I would leave anti alone and adjust droop and springs. Less front droop stiffer rear spring
that does make sense, I already run an extra 1mm under the RF block. Anyone measure if the RB6 arms can extend the wheelbase more than the 521's? I feel like someone told me the 521s equal the middle setting of the 6 stockers. I need a 2nd chassis to keep working on a MM setup

Is ghea the only weighted rb5 front caster block made?
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Old 07-28-2013, 07:46 PM   #7697
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Hey Guys,

I know this has probably been answered already numerous times, but here goes.

I run the RB6 in MID motor config here in Australia.

Now I have had the problem in 3 of the RB6's that run mid motor,
No matter what we do there seems to be a weird noise coming from the car, anywhere where its under load, ie. Mid sweepers, landings off jumps, sometimes on the upramps of jumps. Now the noise sounds like a bird chirping or like a high pitch bark. We run our diffs really really tight as we thought this was the problem, tightened up the slipper all the way to try and make the diff slip but still no change.

I have tried MIP Diffs, Cermic balls, Carbide balls and even the std steel balls but to no avail. Does anyone know what this could be?

Almost sounds like a gear slipping or something rubbing metal on metal. My thought was even that the diff plates were slipping on the actual outdrive but no wear there also.

If anyone has a clue about this that would be great

Ben
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Old 07-28-2013, 07:49 PM   #7698
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Originally Posted by Sterlzy View Post
Hey Guys,

I know this has probably been answered already numerous times, but here goes.

I run the RB6 in MID motor config here in Australia.

Now I have had the problem in 3 of the RB6's that run mid motor,
No matter what we do there seems to be a weird noise coming from the car, anywhere where its under load, ie. Mid sweepers, landings off jumps, sometimes on the upramps of jumps. Now the noise sounds like a bird chirping or like a high pitch bark. We run our diffs really really tight as we thought this was the problem, tightened up the slipper all the way to try and make the diff slip but still no change.

I have tried MIP Diffs, Cermic balls, Carbide balls and even the std steel balls but to no avail. Does anyone know what this could be?

Almost sounds like a gear slipping or something rubbing metal on metal. My thought was even that the diff plates were slipping on the actual outdrive but no wear there also.

If anyone has a clue about this that would be great

Ben

Mine does too, its the wing against the tire under load. Had a buddy have that same issue and that was the noise.
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Old 07-28-2013, 07:56 PM   #7699
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Thanks K_King, Never thought of that but now that I think about it, it just could well be. When I changed to the Rebar rears it went away, obviously less expansion in the tire therefor less hit against the wing.
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Old 07-28-2013, 08:34 PM   #7700
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Had the same noise and came to the conclusion of the tire rubbing the wing also.
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Old 07-28-2013, 08:48 PM   #7701
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+1 on the noise, the wing must be in a slightly different position in mid motor.
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Old 07-28-2013, 09:05 PM   #7702
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Use the jconcepts high clearance wing. No rubbing issues!
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Old 07-28-2013, 09:15 PM   #7703
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I run the jconcepts high clearance wing and I still get rubbing noise in hard cornering mostly sweepers.
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Old 07-29-2013, 04:46 AM   #7704
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Fred forgot to mention he was using the JConcepts high clearance wing for the TLR 22
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Old 07-29-2013, 08:46 AM   #7705
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Default Mid engine rear wide suspension mounts

Anyone try these yet? They were just recently released and I am wondering if it is worth converting my car from rear motor to mid- motor with the wide rear mounts? and giving a new set-up a shot ?
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Old 07-29-2013, 08:48 AM   #7706
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Can anybody speak about the new exotek midmotor narrow rear hanger.? Looks like it might be a good option to have.
Can this same geometry be achieved with the new kyosho hangers with the inserts? Or are those for rear configuration. Thanks
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Old 07-29-2013, 08:50 AM   #7707
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Wide is what the mid motor comes with. Narrow would give you more rear bite which instantly makes the new hangers worth it.
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Old 07-29-2013, 09:08 AM   #7708
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Quote:
Originally Posted by K_King View Post
Wide is what the mid motor comes with. Narrow would give you more rear bite which instantly makes the new hangers worth it.
When you refer to rear bite are you talking about side bite or just overall rear traction?
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Old 07-29-2013, 09:15 AM   #7709
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Quote:
Originally Posted by Bob Barry View Post
Fred forgot to mention he was using the JConcepts high clearance wing for the TLR 22
Are you guys running mid motor outdoors? At family? If so how do you think it will be at bumps?
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Old 07-29-2013, 09:31 AM   #7710
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When you refer to rear bite are you talking about side bite or just overall rear traction?
Overall rear traction. I know on the RB5 the wide hangers were a godsend to free up the car after the longer arms, but I think the narrow is going to work better in mid. At least on non high bite tracks.
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