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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 04-13-2016, 09:27 PM   #13186
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Quote:
Originally Posted by fast-ho-cars View Post
This isn't a version of the RB6, it's just a conversion for the existing car.


Quote:
Originally Posted by gokarter64 View Post
I heard some rumors about a 3 gear and a laydown Transmission in the works on a new kit that has a different rear end
You mean the same conversion he's talking about? Wouldn't make sense as the RZ6 uses a 4wd style rear dif like a wheeler so no lay down is needed.

I really wish someone from Kyosho could tell us if one will be available soon. Tired of modding rear motor cases.
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Old 04-14-2016, 07:44 AM   #13187
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The only part of the case that I did a mod on was to make a hole at the top of the case so that the top shaft would poke out.

I then used 8mm of shims (I will double check that measurement tonight) along with cutting the plastic motor spacer. You will need a spacer on the top shaft for the bearing so that it isn't sliding back and forth in the transmission case. Then I purchased 44mm long screws and put it all together. If the screws went to far past the motor plate I just placed shims on the head end as needed.

I will try and get a picture of mine tonight but I am getting ready to go to a race this weekend and I might not have time.

Parts I had to acquire.
YOKZC-A3630B
YOKZC-A3620B
TRA2592
XRA353371 <-- I think this will work as the top shaft spacer

I cut this part to separate the top from the bottom two holes.
KYOUM523

Then I acquired a new gear cover from a guy on FB.
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Old 04-14-2016, 08:13 AM   #13188
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I did the rear motor case mod like kraig listed above and also one using one of the printed brackets being sold. I feel the non-printed route is the way to go. Everything lines up better and the trans spins much more free. My printed one didnt quite line up perfect and always felt hung up.

The pics on petit are great, explains it clearly.

Pics from races show the team drivers running a lay down and new chasis. I hope they come out. I recently ran the TND lay down kit on turf and it seemed pretty good. I need to work on my setup some as the rear was too loose and laptimes suffered some.

Best the car has been for me is with the 3 gear case, but I'm going to put in more time with the lay down. We'll see.
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Old 04-14-2016, 01:19 PM   #13189
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The low profile car is no longer just rumor, kyosho team drivers tested it at the northwest indoor series finalle At TRCR


Its really nice. the rear shock tower is now carbon fiber and mounts kinda like the yz2. I have more pictures but no body off pictures are allowed Yet

Last edited by gokarter64; 04-14-2016 at 02:08 PM.
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Old 04-14-2016, 05:05 PM   #13190
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Quote:
Originally Posted by gokarter64 View Post
The low profile car is no longer just rumor, kyosho team drivers tested it at the northwest indoor series finalle At TRCR


Its really nice. the rear shock tower is now carbon fiber and mounts kinda like the yz2. I have more pictures but no body off pictures are allowed Yet
Was it a legit Kyosho transmission setup? I think Tanner Day was running the TND lay down transmission, but could be wrong.
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Old 04-14-2016, 07:22 PM   #13191
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TND is 3 gear, I think. This appears to be 4 gear.
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Old 04-15-2016, 04:15 AM   #13192
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Quote:
Originally Posted by Kraig View Post
TND is 3 gear, I think. This appears to be 4 gear.
Gotcha, was looking at this on my phone and didn't notice the gear cover sticking out the side towards us. Definitely looks like a 4 gear.
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Old 04-15-2016, 06:54 AM   #13193
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Hello! Could someone do me a huge favor and measure the exact distance between the holes (center to center) on one RB6 wing mount? Thanks!

(Between the two vertical holes on one mount for mounting on the shock tower)
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Last edited by SamuraiJack; 04-15-2016 at 06:19 PM.
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Old 04-15-2016, 05:57 PM   #13194
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Kyosho America has the RZ6 conversion kit in stock. I ordered mine directly and will have it Monday.
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Old 04-15-2016, 06:05 PM   #13195
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Quote:
Originally Posted by Kraig View Post
I liked the video but I always struggled with putting in just the right amount of oil so I went back to my old routine.

Fill the oil up to the first thread.
Extend the shock shaft so the eyelet bottomed out on the shock bottom.
Place the piston into the shock body but let gravity pull it down into the body.
Once the shock bottom reaches the shock body help align it into the body so that the treads line up.
Turn the shock bottom so that it starts to thread into the body.
Wait for 1 second to give the excess oil time to escape.
Continue to turn, wait, turn, wait process until the shock bottom is tight.
Pump the shock shaft a few times and then bottom out the eyelet to the bottom of the shock and release.
Hopefully you should not have any rebound or maybe just a little bit.
If you have more than you like, loosen the shock bottom, push the shock shaft down, wait for a little bit and then re-tighten the shock bottom.

I hope that made sense.
That's the method I always used when I ran the rb5 and rb6. Worked perfectly.
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Old 04-15-2016, 11:35 PM   #13196
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Quote:
Originally Posted by dmcguire View Post
Gotcha, was looking at this on my phone and didn't notice the gear cover sticking out the side towards us. Definitely looks like a 4 gear.
Wait is there a new kit?

I know the RZ6 conversion is out.

But, what do you mean low profile rear end, and carbon towers? Is that car gonna be a new kit? Or conversion?

More then 1 new rb6 coming out?
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Old 04-16-2016, 09:09 AM   #13197
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Finally got my Jconcepts tires, Trinity D4 motors, and Trak Power 100C 5200 MAH saddle packs. These Trakpower lipos charged to 5,591 MAH I was impressed.

Still waiting on my Team Orion R10 Pro will be here the 18th. I was lucky to find a brand new R10 Pro for $150 shipped. Great ESC from what I hear, with good software.

Will be turning laps shortly! Obviously, I've got a heavier car with these saddles they weighed 273 grams. Although that's why I decided on a 6.5t D4.

I installed the Bro Codes rear, and bar codes front both blue soft.















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Old 04-16-2016, 03:24 PM   #13198
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Quote:
Originally Posted by tps3443 View Post
Wait is there a new kit?
But, what do you mean low profile rear end, and carbon towers? Is that car gonna be a new kit? Or conversion?

More then 1 new rb6 coming out?
the rz6 is just a conversion kit.

this new car will most likely be a new kit. the front end looks the same but the rear end is very different....
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Old 04-20-2016, 02:49 PM   #13199
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My RZ6 showed up today
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Old 04-20-2016, 05:00 PM   #13200
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Let us know how it goes. I have been thinking about getting one and using it on dirt with a 17.5.
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