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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 01-01-2014, 09:09 PM   #9226
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Originally Posted by nickdawg18 View Post
I have the stock front rb6 axles on mine still. No problems running aka rims on them. The rear is where you will most likely find problems. Stock rear axles are a little short for any other rim other then kyosho. Avid makes a longer axle conversion which is really nice, I have one on my car.
Or just get serrated wheel nuts, I've been using serrated wheel nuts for the last few years with my rb5 and now my rb6 with proline wheels without issue
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Old 01-01-2014, 11:50 PM   #9227
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do you also change pins at the same time
No the pins will never wear. But check the front inner hinge pins as they can bend over time. Also the underside of the front arm near the bumper scrapes on the ground and could wear through eventually.

After running my car for 12 months I rebuilt it with my nib spares and kept the worn parts as spares. I replaced the front arms for the above issue, the caster block to remove slop and new rear drive shafts and diff hubs. The car is now like brand new again. I had new ball cups for the turnbuckles but had no slop so left the old ones on.
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Old 01-01-2014, 11:59 PM   #9228
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Brilliant that makes life much easier. I already bought the avid long axle conversion so the rears not a problem anymore. So now my question is where do i need to put the spacer? In front of the hex or between the hub and hex, or both like mikexray said??
On the kit axle you have 1mm spacer between the hex and the bearing, and a 2mm spacer on the inside of the hub. To run other wheels run the 2mm between the hex and bearing and the 1mm on the inside. Yes your track width is now wider but still under legal width. To correct track width problem you flip the caster block inset to the narrow position. I actually ran this setup for awhile with the kit wheels as it has a slightly different feel.
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Old 01-02-2014, 01:07 AM   #9229
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Originally Posted by FallenAllDay View Post
Hey guys ive been searching the forum and im wanting to put on the front rb5 axles on the front. That means i can run aka and proline rims then from what ive gathered?? Ive found a set with part number umw507 and wanted to know if they fit? Or do i have to go the umw506 route and buty the shaft separate like explained in the forum??
Thanks
I did see them too but not sure about them so I played it safe & I have on the way (& hope to be here soon) RB5 Front Wheel Shaft (UM506) & Clamping Wheel Hub Set (LAW30GM)
Will be trying JC, AKA and eventually Proline wheels.
Decided to shimmed the RB6 axles on my MM and will try the Wheel Hubs and RB5 axles on my RM RB6 I figured not an expensive exercise to try to what its like.

I have ordered the narrow wheel nuts for the rear
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Old 01-02-2014, 03:58 AM   #9230
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Thanks for all the clarification and help guys
Let us know what you prefer in the long run KalE163
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Old 01-02-2014, 04:06 AM   #9231
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Originally Posted by VenturaDC View Post
Or just get serrated wheel nuts, I've been using serrated wheel nuts for the last few years with my rb5 and now my rb6 with proline wheels without issue
I used to just use the serrated nuts and I never had a wheel come off. It was always in the back of my mind though that the axle was never into the nylon of the locknut. So for the added security, I bought the avid kit.
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Old 01-02-2014, 07:27 AM   #9232
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Why not run Kyosho wheels?
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Old 01-02-2014, 08:31 AM   #9233
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I run these: http://www.amainhobbies.com/product_...Locknut-Set-10

Cheap and enough for 2 cars with 2 spares. At $3 for 10 nuts, and being super cool looking low profile black nuts, I don't understand why everyone who wants to run something other than kyo wheels doesn't have these.
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Old 01-02-2014, 10:35 AM   #9234
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anyone recommend an east coast or central US online retailer who stocks kyosho parts?

thanks
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Old 01-02-2014, 11:03 AM   #9235
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http://www.speedtechrc.com/

thats your best bet...great people and fast shipping!
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Old 01-02-2014, 11:04 AM   #9236
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Double....
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Old 01-02-2014, 11:18 AM   #9237
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Quote:
Originally Posted by chillindrdude View Post
anyone recommend an east coast or central US online retailer who stocks kyosho parts?

thanks
absolute hobbies.
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Old 01-02-2014, 01:21 PM   #9238
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http://www.speedtechrc.com/

thats your best bet...great people and fast shipping!
+1000... Jeff is great people.

But I think they are West Coast... Also on the WC is LosiPartsHouse and of course Amain...

On the East Coast/Mid, Absolute and InfernosOnly...
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Old 01-02-2014, 01:38 PM   #9239
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Why not run Kyosho wheels?
Because over 50% of my K wheels have cracked and not due to bad driving.
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Old 01-02-2014, 01:48 PM   #9240
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Why not run Kyosho wheels?
Because where i live nobody stocks kyosho wheels at all. Plus they probably cost more.
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