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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
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 12-17-2012, 10:44 AM   #3451
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Are the ghea pistons tapered on one side or both?
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Old 12-17-2012, 11:01 AM   #3452
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Are the ghea pistons tapered on one side or both?
I am running single side taper. (what would be the point of a double sided taper?)
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Old 12-17-2012, 11:15 AM   #3453
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light turnout do to holidays but fun anyway
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Old 12-17-2012, 11:21 AM   #3454
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car still looks like it does everything well.

have you made any changes to the setup?
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Old 12-17-2012, 11:35 AM   #3455
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car still looks like it does everything well.

have you made any changes to the setup?
the only things i have changed is added Avid system . .05 shim under outer front ball stud . 2 degrees caster insert . moved rear hubs all the way forward , adjusted radio EXP L & R +12 and duel rate down to 60% total steering and still turns on a dime
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Old 12-17-2012, 11:36 AM   #3456
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I am running single side taper. (what would be the point of a double sided taper?)
That was going to be my question. I have never seen them but the way someone was describing them to me it seemed like he was trying to say it was tapered on both sides. His explanation didn't make sense though.

What direction do you run the tapered side?
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Old 12-17-2012, 11:40 AM   #3457
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I run mine since last month taper down so basically faster rebound and more pack in downtravel.

On another note I started using the brakes mid air for nose corrections. What a difference, used to tune it before with drag brakes, now can consistently hit the back side of the slope with all 4 wheels!!! Thanks guys
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Old 12-17-2012, 12:35 PM   #3458
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what is the difference between the red and white slipper pads ?
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Old 12-17-2012, 12:44 PM   #3459
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what is the difference between the red and white slipper pads ?
reds are thicker and I think came with the wc (teflon imho). The whites are cheaper and maybe a different material.
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Old 12-17-2012, 01:09 PM   #3460
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So I don't know why I never noticed or tried this before, but I realized that if you flip the diff and your swing shafts/axles together, you change which side of the out drive and which side of the swing shaft pin get the "on-throttle" wear.

I flipped it all around before my weekend race and had zero issues. Adjusting the diff now requires you go in from the side with a flat head (cant reach the little hole anymore)... but other then that.. it's a good way to get better life out of your swing shaft pins and out drives. Maybe swap them all around every couple weeks when you pull things apart to clean or rebuild.

For all I know, you guys all do this already

Anybody forsee any issues with this? Maybe some braking inconsistency as the contact wear is now on the "braking side" of the pins/outdrives instead of the "throttle side"?
I have done this to all the cars I have owned, especially 1/8. I did have a bad batch of outdrives on one of my Dex210 and the outdirves wore very fast and when I flipped them there was a notable harsher inconsistent feel when braking and made some loud metal clicking sound when carrying a lot of speed down siding jumps or in some of the corners that made it a little notchy feeling getting in and out of throttle.

As far as flipping the diff, it doesn't matter what side the diff nut is on, I have filliped the diff on all my cars with the diff never loosening. If I remember correctly AE and Losi use to always have their diff nut on the opposite side of each other.
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Old 12-17-2012, 05:35 PM   #3461
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anybody have the part number for the narrow aluminum rear suspension holders ? The box stock setup is with wide ones isnt it ? Whats the part # for the wide ones ?
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Old 12-17-2012, 05:41 PM   #3462
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anybody have the part number for the narrow aluminum rear suspension holders ? The box stock setup is with wide ones isnt it ? Whats the part # for the wide ones ?
They are scattered all over the previous pages.
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Old 12-17-2012, 05:51 PM   #3463
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They are scattered all over the previous pages.
Yeah i have been reading. I am looking on speedtech. im guessing the ones that that dont say wide are the narrow ones. I just dont want to order the wrong thing. Will the delrin suspension inserts work ? They say they are for the 4wd
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Old 12-17-2012, 06:43 PM   #3464
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Yeah i have been reading. I am looking on speedtech. im guessing the ones that that dont say wide are the narrow ones. I just dont want to order the wrong thing. Will the delrin suspension inserts work ? They say they are for the 4wd
They're also listed on the RB6 setup sheet...
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Old 12-17-2012, 06:46 PM   #3465
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Yeah i have been reading. I am looking on speedtech. im guessing the ones that that dont say wide are the narrow ones. I just dont want to order the wrong thing. Will the delrin suspension inserts work ? They say they are for the 4wd
yes, the delrins with alum blocks.
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