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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 08-30-2013, 05:19 PM   #8041
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Quote:
Originally Posted by aloksatoor View Post
Big deal break out the sander and a drill and m3 tap and should be golden. Seems to have enough meat in there to hold a decent m3 screw.
right because I want to pay 30$ for a part and mod it. I'm not against that but at the same time
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Old 08-30-2013, 05:21 PM   #8042
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would also be cool if the back side was threaded so you wouldn't need a nut to tighten to the gear box
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Old 08-30-2013, 05:28 PM   #8043
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right because I want to pay 30$ for a part and mod it. I'm not against that but at the same time
hehe yeah Im happy with modding the aluminums because I tried that with the original plastics and ended up buying a new plastic tree, turned out pretty bad .
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Old 08-30-2013, 06:28 PM   #8044
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Default Is the RB6 being updated?

I see that Stormer no longer carries it......



And AMain says there are limited quantities......

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Old 08-30-2013, 07:13 PM   #8045
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Yes. It's the RB6.2 Ryan Lutz edition
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Old 08-30-2013, 07:15 PM   #8046
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Lutz runs for durango. Really? A .2 already? I figured on a Worlds edition or something.
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Old 08-30-2013, 07:54 PM   #8047
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Quote:
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Yes. It's the RB6.2 Ryan Lutz edition


Quote:
Originally Posted by Posvar View Post
Lutz runs for durango. Really? A .2 already? I figured on a Worlds edition or something.
He's yanking your chain!

Seriously though...why doesn't stormer carry it?
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Old 08-30-2013, 08:07 PM   #8048
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Default gear diff

Thinking of giving the rear diff a try what weight diff fluid should I try?
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Old 08-30-2013, 11:43 PM   #8049
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SP coming out
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Old 08-31-2013, 04:01 AM   #8050
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Took my new RB6 out tonight for the first time. Here are my first impressions. Shocks wow these things are nice! It steers way better than the 22 I was borrowing from a friend. Easier to drive in almost all sections of the track. I was told by another racer at the track that he picked up a second on his lap times by switching from a AE4.2 to a RB6. While I thought that he was full of $h!t I went ahead and got my first Kyosho. Low and behold when the dust settled I was a second faster. I have owned Losi's for the past 20 years on and off so this is a new side of things for me. I was going to wait for the 22 2.0 but after talking to the team drivers I was less than impressed. They acted like I was interfering with what they had going on. (Even though they are more than helpful on this forum) But Cody Tuner went out of his way to find me and thank me after I turn marshaled for him. So Kyosho sold one kit to a happy customer via the personable driver that they sponsored. Thank you Cody for not being an ass. I wound have been building a 22 2.0 tomorrow had it went a little bit different.

Btw I used the shims from the scte diffs that they no long use to shim the losi 55 pistons during my build. If you guys have anyone at the track that is buying the new scte diff cases then they will no longer need the shims which fit the shocks perfectly.

Last edited by AlwaysLOSI; 08-31-2013 at 04:18 AM.
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Old 08-31-2013, 04:06 AM   #8051
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Quote:
Originally Posted by AlwaysLOSI View Post
Took my new RB6 out tonight for the first time. Here are my first impressions. Shocks wow these things are nice! It steers way better than the 22 I was borrowing from a friend. Easier to drive in almost all sections of the track. I was told by another racer at the track that he picked up a second on his lap times by switching from a AE4.2 to a RB6. While I thought that he was full of $h!t I went ahead and got my first Kyosho. Low and behold when the dust settled I was a second faster. I have owned Losi's for the past 20 years on and off so this is a new side of things for me. I was going to wait for the 22 2.0 but after talking to the team drivers I was less than impressed. They acted like I was interfering with what they had going on. (Even though they are more than helpful on this forum) But Cody Tuner went out of his way to find me and thank me after I turn marshaled for him. So Kyosho sold one kit to a happy customer via the personable driver that they sponsored. Thank you Cody for not being an ass. I wound have been building a 22 2.0 tomorrow had it went a little bit different.


Btw I used the shims from the scte diffs that they no long use to shim the loss 55 pistons during my build. If you guys have anyone at the track that is buying the new scte diff cases then they will no longer need the shims which fit the shocks perfectly.
good to hear, you need to change your forum name
Cody has always been one of the most helpful guys I have ever raced with
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Old 08-31-2013, 04:16 AM   #8052
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good to hear, you need to change your forum name
Cody has always been one of the most helpful guys I have ever raced with
yeah might need a new account now..........
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Old 09-01-2013, 08:59 AM   #8053
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Hey guys,

i have bought an Rb6 a few days ago and I got it a few minutes ago. I wanted to ask this question a few times in the last days but forgot it.

WHich gearing would you suggest? I am using an LRP 8,5t engine, track is not that highspeed, it should have a good topspeed but also a gut accel.
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Old 09-01-2013, 09:06 AM   #8054
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You should be good with 23/76, unless your track is very short and twisty then 22/76.
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Old 09-02-2013, 09:18 AM   #8055
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Alright. I have a bit of a conundrum. I am building my rb6 kit, and haven't built a kit since my original Losi JRX2. I used a regular pair of coarse pliers when building the front turnbuckles, along with a turnbuckle wrench. All of the front plastic pieces are fairly well scuffed from the pliers. Certainly usable, but a little bit ugly. I subsequently build the rears using a wrench on the plastic parts. They turned out beautifully! Now. Do I give in to vanity and go back and rebuild the fronts with new plastic pieces? I can always use the current ones as back ups.

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