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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 12-01-2013, 01:44 AM   #8776
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Cheers for the help guys.
Is there a reason i need to run the avid slipper?? And i cant remember because im away at the moment if the kit comed with a 69 tooth spur or am i wrong?? Ill be running on a pretty loose dirt track if that helps as well.
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Old 12-01-2013, 05:28 AM   #8777
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I weighed my SXX v2 with cap, wires and sensor cable, it was 67g, My shorties are all around 202g, the speed control is almost exactly 1/3 the size of the shorty. This means that moving the battery back vs mounting the speedo back net the same weight balance, its easier to get the speed control under the rear brace in MM.
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Old 12-01-2013, 08:25 AM   #8778
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What is the largest pinion you can run with the stock 76 spur? I usually run mod but will be running 17.5 blinky later this month.

I do have the avid set up but have not installed it. What avid spur and pinion would you recommend with a blinky 17.5? High traction indoor with a Revtech 17.5 with high torque rotor.
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Old 12-01-2013, 08:31 AM   #8779
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Quote:
Originally Posted by VenturaDC View Post
For boosted 17.5 I run 28\76 on a decently high traction outdoor track. With that gearing I run max boost with a lot of end bell timing as well, and my car is ballistic fast.

For blinky I run 28-34 with the avid slipper and 69 spur.
What kind of temps are you getting with that boosted setup?
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Old 12-01-2013, 10:34 AM   #8780
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Quote:
Originally Posted by Posvar View Post
What is the largest pinion you can run with the stock 76 spur? I usually run mod but will be running 17.5 blinky later this month.

I do have the avid set up but have not installed it. What avid spur and pinion would you recommend with a blinky 17.5? High traction indoor with a Revtech 17.5 with high torque rotor.
Not big enough, are you running MM? I find mid allows a bigger pinion with the 70 range spur. For a quick fix I would just get a AE 72 or 69 spur and clamp the slipper down completely to run 17.5 (the plates are a bit too big so once the pads wear down some you end up in contact with the spur, not the pads). You want to be in the 69/30-33 range depending on track size, and most motors will run best with +20 or more timing (again depends on motor and how they mark it).
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Old 12-01-2013, 11:43 AM   #8781
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Thank you Mike. I am running rm as it works well at our local outdoor tracks. I will be at Newred Hobbies at Christmas time for a few races but want to keep it set up in rm.

I think I do have a 69 Avid spur and will drop that on and see how it goes.
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Old 12-01-2013, 02:33 PM   #8782
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Quote:
Originally Posted by MikeXray View Post
Not big enough, are you running MM? I find mid allows a bigger pinion with the 70 range spur. For a quick fix I would just get a AE 72 or 69 spur and clamp the slipper down completely to run 17.5 (the plates are a bit too big so once the pads wear down some you end up in contact with the spur, not the pads). You want to be in the 69/30-33 range depending on track size, and most motors will run best with +20 or more timing (again depends on motor and how they mark it).
You said "for a quick fix". What's a permant option? I'm getting very confused. Did I screw up by buying the avid 72/76 spur kit and a 28t pinion?
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Old 12-01-2013, 03:08 PM   #8783
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Quote:
Originally Posted by nickdawg18 View Post
You said "for a quick fix". What's a permant option? I'm getting very confused. Did I screw up by buying the avid 72/76 spur kit and a 28t pinion?
A lot of it depends on your track size and the motor you are running (I didn't go back and read your previous posts). Not knowing your track size yields many answers. So if your track has a length of 100 feet them you probably want to throw on that 72 tooth spur and pickup some larger pinions, 32-34. Now if you have a smaller track then perhaps that 72 spur 28 pinion will work.
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Old 12-01-2013, 03:34 PM   #8784
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Originally Posted by Kraig View Post
A lot of it depends on your track size and the motor you are running (I didn't go back and read your previous posts). Not knowing your track size yields many answers. So if your track has a length of 100 feet them you probably want to throw on that 72 tooth spur and pickup some larger pinions, 32-34. Now if you have a smaller track then perhaps that 72 spur 28 pinion will work.
It's a small track. Probably a 50' straight. 17.5 tekin gen 2 motor
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Old 12-01-2013, 03:46 PM   #8785
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I run a 69/32 on my 17.5 blinky setup. The Avid slipper is a good performance mod to have. The gear cover rubs on larger pinions. 34t rubbed. You can get smaller spurs from Avid.
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Old 12-01-2013, 05:19 PM   #8786
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Originally Posted by nickdawg18 View Post
You said "for a quick fix". What's a permant option? I'm getting very confused. Did I screw up by buying the avid 72/76 spur kit and a 28t pinion?
I'm pretty sure I maxed out at 30/76 in RM, I think the 31 fit, but mesh was really tight.

The avid parts are good, maybe pick up a 69 just in case, but if your track is only 50' you're probably fine with 28/72.
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Old 12-01-2013, 11:17 PM   #8787
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Alright im going to invest in one of these avid slipper set ups so i can run stock 17.5 blinky.It seems that there description is for the b4s and 22s but it must fit the rb6 then im gathering if you guys are running it?? Any clarification would be great.Ill be buying the stock set up but will purchase a 69 tooth spur separately if thats the desired spur to run, ill be running rear motor because i race on a very loose track.
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Old 12-01-2013, 11:25 PM   #8788
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Quote:
Originally Posted by FallenAllDay View Post
Alright im going to invest in one of these avid slipper set ups so i can run stock 17.5 blinky.It seems that there description is for the b4s and 22s but it must fit the rb6 then im gathering if you guys are running it?? Any clarification would be great.Ill be buying the stock set up but will purchase a 69 tooth spur separately if thats the desired spur to run, ill be running rear motor because i race on a very loose track.
Yes, it fits the RB6, but I think you need the Avid RB6 top shaft:

http://www.amainhobbies.com/product_...minum-Topshaft


Just curious, why do people like these for stock? Isn't it more rotating mass than a 2 pad system? Is the tradeoff for increased rotating weight worth it for the improved handling characteristics?
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Old 12-01-2013, 11:29 PM   #8789
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Originally Posted by testcrashdummy View Post
Yes, it fits the RB6, but I think you need the Avid RB6 top shaft:

http://www.amainhobbies.com/product_...minum-Topshaft


Just curious, why do people like these for stock? Isn't it more rotating mass than a 2 pad system?
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Old 12-02-2013, 12:26 AM   #8790
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The Avid slipper with aluminum topshaft is probably lighter and less rotating mass than the stock slipper.
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