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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 08-23-2015, 05:41 AM   #12346
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tef are you going to be running pin points up there?
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Old 08-23-2015, 05:59 AM   #12347
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i came up with this quicky and free fan set up for my sons 17.5 rb6.. straight forward and easy the way i like it
Clean and simple. I like it!
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Old 08-23-2015, 10:50 AM   #12348
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tef are you going to be running pin points up there?
I think so
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Old 08-23-2015, 12:07 PM   #12349
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Has anyone tried a different spur other than 76 in mod?
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Old 08-24-2015, 03:46 PM   #12350
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Has anyone tried a different spur other than 76 in mod?
I'm running a 84. 22 is the biggest pinion I could fit. My driving is way off pace but straightaway speed seems to be right there. 8.5 with 15 degrees motor timing and zero speed control timing. I was going to back off the timing and gear up but kiddo kept me busy with 2 more broken rear arms. I'll have this second car going soon.
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Old 08-24-2015, 05:08 PM   #12351
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Any body see any negative effects running the battery against the motor? I just got done cutting my side guards to try the sideways setup, and I am going to finally get some practice tomorrow so I want to try the following and see what I like best; Regular inline, against motor inline, and sideways. If done some running with it against the motor and the battery sure does get warm seeing as my motor comes off at nearly 180 degrees after a 6 minute qual. Anybody have any long term effects on the battery?? Thanks guys. Trophy race this sunday hoping to finally have this car dialed in and stop looking like an idiot
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Old 08-24-2015, 06:21 PM   #12352
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Ok so I've tried to figure out this anti-squat stuff and it seems that I can read 10 articles and 5 say one thing and 5 say the opposite.
To increase anti-squat I add spacers to the front hinge pin brace - correct?
To decrease anti-squat I add spacers to the rear hinge pin brace - correct?

Also would and increase in anti-squat take away forward traction? And adding spacers in the rear increase forward traction? This sounds more logical to me but I'm not sure which way to start. I'm searching for some more forward traction.
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Old 08-24-2015, 08:16 PM   #12353
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Originally Posted by RobsRacin View Post
Any body see any negative effects running the battery against the motor?
Mod or 17.5?
I have run that way and had no trouble at all. The battery stop under the motor helps. I had a gap from the motor, it was small but air flow always helps. 180 is kinda high but RCHR is pretty tight and I came off hot there too. 17.5 is great sideways when there is traction.
If the worry is the long term, simply try some Al foil on the back of the battery. That will give some heat shielding.
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Old 08-24-2015, 09:48 PM   #12354
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I'm planning to try a 72 spur next time out to move the motor a little closer to the rear of the car.

Quote:
Originally Posted by oPAULo View Post
I'm running a 84. 22 is the biggest pinion I could fit. My driving is way off pace but straightaway speed seems to be right there. 8.5 with 15 degrees motor timing and zero speed control timing. I was going to back off the timing and gear up but kiddo kept me busy with 2 more broken rear arms. I'll have this second car going soon.
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Old 08-24-2015, 09:52 PM   #12355
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I'm shopping for a new steering servo, can you all share some suggestions and thoughts? I'm currently running savor 1257(RB6) and 1258(D413) and both of them don't seem to center very well. I seem to have to RE-trim to get it back to center somewhat often and turning full left/right generally does not go back to perfect center. Or...perhaps it's a radio setting? This problem happened with both my radios DX3R and my newer 4PX.

Thanks in advance!
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Old 08-24-2015, 10:34 PM   #12356
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Originally Posted by K_King View Post
Has anyone tried a different spur other than 76 in mod?
78 all the time..mainly because my son runs a 8.5... It gives great punch out of turns to make those hard triples... not sure if it is good for a 7.5
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Old 08-24-2015, 10:41 PM   #12357
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Originally Posted by 13Maschine View Post
I'm shopping for a new steering servo, can you all share some suggestions and thoughts? I'm currently running savor 1257(RB6) and 1258(D413) and both of them don't seem to center very well. I seem to have to RE-trim to get it back to center somewhat often and turning full left/right generally does not go back to perfect center. Or...perhaps it's a radio setting? This problem happened with both my radios DX3R and my newer 4PX.

Thanks in advance!
Hitec 8360, super fast titanium gears and made for cars and helis,heli servos center awesome..plus hitec is in SoCal with excellent service..

Last edited by hairymuffin; 08-25-2015 at 12:19 AM.
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Old 08-25-2015, 03:02 AM   #12358
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Originally Posted by twindad98 View Post
Ok so I've tried to figure out this anti-squat stuff and it seems that I can read 10 articles and 5 say one thing and 5 say the opposite.
To increase anti-squat I add spacers to the front hinge pin brace - correct?
To decrease anti-squat I add spacers to the rear hinge pin brace - correct?

Also would and increase in anti-squat take away forward traction? And adding spacers in the rear increase forward traction? This sounds more logical to me but I'm not sure which way to start. I'm searching for some more forward traction.
spacer under fr mount is more anti squat and gives more forward bite but it has its limits definitely dont go more then 1mm up there.. more anti squat helps going through bumps as well but u will loose some control under hard breaking.. best thing to do is make a big change and feel the difference on the track then you will have your own feel for hat that change does..keep us posted on your findings and have fun
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Old 08-25-2015, 05:08 AM   #12359
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Quote:
Originally Posted by GIHOSU View Post
Mod or 17.5?
I have run that way and had no trouble at all. The battery stop under the motor helps. I had a gap from the motor, it was small but air flow always helps. 180 is kinda high but RCHR is pretty tight and I came off hot there too. 17.5 is great sideways when there is traction.
If the worry is the long term, simply try some Al foil on the back of the battery. That will give some heat shielding.
Mod 8.5. It appears as though I have a slight gap as well but I just don't want to hurt the battery too badly. You can definitely feel that one end is hotter than the other after a run
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Old 08-26-2015, 08:03 AM   #12360
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Does anyone know if a slipper eliminator for and RB6 will fit and RB5. I run dirt oval with this car and i would like more options for gearing as well as the advantages of running a slipper eliminator such as the one from exotek
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