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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 04-05-2016, 12:01 PM   #13141
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Should I go ahead and buy the differential kit before I build tomorrow?

Diff kit, aluminum diff cover, and diff oil? If so, what weight?
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Old 04-05-2016, 01:52 PM   #13142
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Get a bottle of 5K and 7K

Start with 5k
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Old 04-05-2016, 08:11 PM   #13143
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I was planning to reuse my Hitec 7955TG servo in the RB6. I've always ran it at 7.4v at 375oz of torque. That just seems a bit high to me, and I would love to trade half the servo torque for more servo speed.
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Old 04-06-2016, 12:28 PM   #13144
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Default She finally arrived!






It's building time. Kyosho is some serious high quality, it's just amazing they are built in Japan!
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Old 04-06-2016, 02:42 PM   #13145
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Building stopped as fast as it started..

Very disappointing, part UM718 assembly shafts with a nut on the end, were not included. I cannot find them in any bag.

They are the main support shafts, that the steering rack, and bearings bolt to.
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Old 04-06-2016, 03:50 PM   #13146
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Quote:
Originally Posted by tps3443 View Post
Building stopped as fast as it started..

Very disappointing, part UM718 assembly shafts with a nut on the end, were not included. I cannot find them in any bag.

They are the main support shafts, that the steering rack, and bearings bolt to.
I've been in the manufacturing and machine trade industry for 22 years and I can assure you that Japan knows about quality and precision manufacturing.

Putting all the parts in the box is another story.

That sucks.

Stick with it. They really are good cars.
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Old 04-06-2016, 04:33 PM   #13147
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Quote:
Originally Posted by oPAULo View Post
I've been in the manufacturing and machine trade industry for 22 years and I can assure you that Japan knows about quality and precision manufacturing.

Putting all the parts in the box is another story.

That sucks.

Stick with it. They really are good cars.

Lol. Everything is good! One of my kids "toddlers" grabbed a bag out of the RB6 box . I found the parts!

Build is super smooth, Kyosho instructions... Well, there Kyosho instructions lol that's another story!

Best quality I've seen in RC kits! Ever! Kyosho is amazing, they are worth the extra bit of $

All Delrin CNC conical shock parts, hard plastics! Everything fits like a glove.

I can't believe it. Great kit.
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Old 04-06-2016, 05:33 PM   #13148
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Did you guys shim the front A-arms? Mine are snug without shims, and fall freely. No binding at all. Just curious because it has shims attached. But, I guess there for the knuckles/ hubs
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Old 04-06-2016, 06:15 PM   #13149
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No shims between the front arms and arm mounts but the hub carriers need shims.

Speaking of arm mounts, Yaiba stuff looks awesome but don't get the steering arms or the front arm mount. Stick with Kyosho or Exotek or Jconcepts aluminum parts.

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Old 04-06-2016, 08:45 PM   #13150
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Quote:
Originally Posted by tps3443 View Post
Building stopped as fast as it started..

Very disappointing, part UM718 assembly shafts with a nut on the end, were not included. I cannot find them in any bag.

They are the main support shafts, that the steering rack, and bearings bolt to.
there is no nuts on um718.

you just put a screw on top of the shaft to secured steering rack. please check your manual, page 12.
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Old 04-06-2016, 11:09 PM   #13151
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Quote:
Originally Posted by oPAULo View Post
No shims between the front arms and arm mounts but the hub carriers need shims.

Speaking of arm mounts, Yaiba stuff looks awesome but don't get the steering arms or the front arm mount. Stick with Kyosho or Exotek or Jconcepts aluminum parts.
For suspension parts I have stayed with Kyosho with a few of Schelle steering racks thrown in and everything has been dependable. Be sure to shim your rear arms if you go to metal hinge pin holders.
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Old 04-07-2016, 09:28 AM   #13152
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Quote:
Originally Posted by boner View Post
there is no nuts on um718.

you just put a screw on top of the shaft to secured steering rack. please check your manual, page 12.

The nut is not removable on the UM718 it's just so it can be keyed in to the bulk head. I just had both UM718's missing all together. But I found them.

So far so good. I am fairly slow at building kits, but I try to make sure everything is perfect. I'm about to start back at it today , and finish it up.













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Old 04-07-2016, 02:44 PM   #13153
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I hope this not a issue, but I finished building the ball diff. It is very smooth! I used all of my white gear grease assembly on the diff. so, I had to use the black graphite grease in the gear box. Is that OK? Everything turns super smooth. Diff is great.

Assembly is correct, but I used black cvd grease on the idler gears etc.etc.
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Old 04-07-2016, 08:17 PM   #13154
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Default RZ6 Conversion

The wait is almost over.

http://www.kyoshoamerica.com/ULTIMA-...T_p_24348.html

This conversion replicates the car used by Jared Tebo at the World Championship held in Japan. It features a very efficient shaft drive, which is ideally suited to stock class racing and favors medium to high bite tracks. This is a conversion that is intended for current RB6 owners only.

Expected availability: End of April





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Old 04-07-2016, 09:21 PM   #13155
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I wonder if those are legit 2.2 sized chainlinks and typos on that car or if they are mounted using the conversion kit.

Anyway, here is the setup that I used at the 2016 Spring Classic - Bluegroove Hobbies & RC Raceway in West Des Moines Iowa. Maybe something on it will work for you, not sure.
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