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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 05-12-2014, 04:42 PM   #10381
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Any of you guys running 64 pitch gearing?
Yep. I run the delrin ARC gears with the exotek eliminator now. Pretty sweet setup. For gearing help just, take the 48p spur or pinion and multiply by 1.3333 to get the equivalent 64p.
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Last edited by aloksatoor; 05-12-2014 at 05:57 PM.
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Old 05-12-2014, 05:35 PM   #10382
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whats the benefit of 64 pitch gears? Ive been thinking about switching back to stock since my son is destroying me in mod.
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Old 05-12-2014, 05:54 PM   #10383
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whats the benefit of 64 pitch gears? Ive been thinking about switching back to stock since my son is destroying me in mod.
Finer gear ratio increments. Not as strong of teeth as a 48p, but a lot tighter gear ratio.

Almost wish someone would bring the old Kinwald 56p gears back. Loved those things back in the day. Almost as strong as a 48p, but the close gear ratios of 64p.
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Old 05-12-2014, 05:57 PM   #10384
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Originally Posted by Teufel Racing View Post
Finer gear ratio increments. Not as strong of teeth as a 48p, but a lot tighter gear ratio.

Almost wish someone would bring the old Kinwald 56p gears back. Loved those things back in the day. Almost as strong as a 48p, but the close gear ratios of 64p.
And also can get the motor closer/farther to axle as required for a bit of weight bias. Also helps the spurs are made in increments of around 2 for the touring car guys.
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Old 05-12-2014, 06:10 PM   #10385
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Originally Posted by aloksatoor View Post
Yep. I run the delrin ARC gears with the exotek eliminator now. Pretty sweet setup. For gearing help just, take the 48p spur or pinion and multiply by 1.3333 to get the equivalent 64p.
Nice thank you i have a full hudy setup from on road was hoping you would give me that answer thank you! so a 101 spur will fit fine? and a 30 31 pinion?
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Old 05-12-2014, 07:06 PM   #10386
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Originally Posted by Teufel Racing View Post
Finer gear ratio increments. Not as strong of teeth as a 48p, but a lot tighter gear ratio.

Almost wish someone would bring the old Kinwald 56p gears back. Loved those things back in the day. Almost as strong as a 48p, but the close gear ratios of 64p.
You know, now that BK is running for JConcepts that may be possible. JC seems to be on top of it when it comes to "why doesn't someone make that?"

You should hit up the JC thread and ask about it.
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Old 05-12-2014, 07:28 PM   #10387
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Originally Posted by Eric Tomczyk View Post
You know, now that BK is running for JConcepts that may be possible. JC seems to be on top of it when it comes to "why doesn't someone make that?"

You should hit up the JC thread and ask about it.
Funny you should mention that,

While down at the cactus this year I asked about a 69 spur for the Kyosho, seeing as of that time no one made one for the Kyosho directly. Jason said they were going to expand the Kyosho line from JC, didn't say what or when.

I'll have to try and hit them up again about the 56p spurs/pinions and a few other things I can think of, that if brought back out, I'd bet they sell pretty well.
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Old 05-13-2014, 07:14 AM   #10388
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Originally Posted by Ultraspeed84 View Post
Nice thank you i have a full hudy setup from on road was hoping you would give me that answer thank you! so a 101 spur will fit fine? and a 30 31 pinion?
We run this 64P 88T spur from Schelle Racing with somewhere between a 31 to 34 tooth pinion based on track when we run Stock on a Medium High to High Traction track. It is awesome...

Here is the link to the Spur: http://www.schelleracing.com/index.p...product_id=217
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Old 05-13-2014, 03:15 PM   #10389
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On this car, I have the 84, 86 and 88 TC spurs machined delrin ones from ARC/Precision. I run around 5.5 FDR on the car, so pinions vary from 41T to around 45T. 101 would be too large frankly. Also I try to get a thinner pinion to lessen chances of stripping, the precision pinions are thinner (just a tick wider than the spur actually) than the robinsons (which are the width of the schelle nova 64p spur).
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Old 05-13-2014, 07:17 PM   #10390
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is there a way to run a slipper with the 64p stuff?
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Old 05-14-2014, 02:46 AM   #10391
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is there a way to run a slipper with the 64p stuff?
Yes, if you use the Schelle Racing gear you would use the Schelle Nova Slipper System. They currently have an 88t available and a 96t will be out very soon.

You will need a top shaft Schelle Racing should have one out very soon, in the mean time you can get one from AVID: http://www.avidrc.com/product/5/acce...cessories.html

Slipper: http://www.schelleracing.com/schelle-nova-SCH1301

Gear: http://www.schelleracing.com/index.p...product_id=217

and for those wanting a smaller 48p gear Kyosho now makes a 69t
http://www.kyoshoamerica.com/Spur-Ge...6_p_23085.html
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Old 05-15-2014, 10:36 AM   #10392
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when rebuilding the ball diff, are you guys using the $40 kyosho tungsten balls or other ones?
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Old 05-15-2014, 10:41 AM   #10393
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when rebuilding the ball diff, are you guys using the $40 kyosho tungsten balls or other ones?
I use the bfast rc 3/32 balls best in the business. I am trying out new acer ceramics in my next rebuild, but bfast is my goto for rebuilds. 11$ shipped.
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Old 05-15-2014, 03:32 PM   #10394
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when rebuilding the ball diff, are you guys using the $40 kyosho tungsten balls or other ones?
I use the equivalent balls from Associated. If they are out then I use Associated. My lhs doesn't stock Kyosho parts so I make due with what I have access to if I don't plan ahead.
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Old 05-15-2014, 03:34 PM   #10395
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I use the equivalent balls from Associated. If they are out then I use Associated. My lhs doesn't stock Kyosho parts so I make due with what I have access to if I don't plan ahead.
Why not ceramic?
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