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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 05-02-2013, 10:01 AM   #6586
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Have any of you guys ever bent a lundsford punisher turnbuckle? I just bent one on my rear link on my 17.5 RB6.
yes, I have bent them before. Send it back to lunsford, they will replace it.
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Old 05-02-2013, 10:10 AM   #6587
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yes, I have bent them before. Send it back to lunsford, they will replace it.
Yep they bend quite easily in the right hands (me :P). I have since upgraded most of mine to the 3.5 mm versions have yet to bend one.
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Old 05-02-2013, 10:14 AM   #6588
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are the rb6 lunsfords normally 3x40mm?
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Old 05-02-2013, 10:15 AM   #6589
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hmm these are the super duty kits
  • (2) M3.5x55mm Super Duty Titanium Turnbuckles (Front Camber)
  • (4) M3.5x60mm Super Duty Titanium Turnbuckles (Steering & Rear Camber)
  • (12) 4.8mm Ball Cups with access hole for easy installation
they went from 40mm to 50 and 55, which is about the same length as the b4 and 22 rods. I wonder if my b4 lunsfords are 3mm or 3.5mm.
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Old 05-02-2013, 10:28 AM   #6590
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Don't buy the kit form. Kyosho has designed the buckles properly the longer plastic pieces flex and are the first point of breakage rather than expensive hubs, bulkheads. Get the 1.5 inch long super duty pack from amain or whereever. They sadly come in packs of 4 so two are backups.

http://www.amainhobbies.com/product_...-Turnbuckles-4

Use a body reamer for the first 2 mm in a new ball cup to get the thread going, its fatter than the 3mm on the skinny turnbuckles.
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Old 05-02-2013, 10:30 AM   #6591
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Originally Posted by aloksatoor View Post
Don't buy the kit form. Kyosho has designed the buckles properly the longer plastic pieces flex and are the first point of breakage rather than expensive hubs, bulkheads. Get the 1.5 inch long super duty pack from amain or whereever. They sadly come in packs of 4 so two are backups.

http://www.amainhobbies.com/product_...-Turnbuckles-4

Use a body reamer for the first 2 mm in a new ball cup to get the thread going, its fatter than the 3mm on the skinny turnbuckles.
lololol.....

3.5mm x 1 1/2, wtf. its metric x standard?
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Old 05-02-2013, 10:38 AM   #6592
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Originally Posted by pekow91 View Post
Have any of you guys ever bent a lundsford punisher turnbuckle? I just bent one on my rear link on my 17.5 RB6.
If I didn't know better, I would say something changed in the production material of the lunsford Ti turnbuckles. I'v been running them for years. A few years ago, i would never see a bent turnbuckle. Today? I crash FAR less than I used to, and i bend them all the time. Honestly, i would probably stick with the stock turnbuckles, unless weight was a huge issue. you save about 6 grams going from the stockies to the lunsfords. (if memory servs). But the stock buckles are a lot stronger, and don't bend nearly as easily.
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Old 05-02-2013, 10:52 AM   #6593
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Originally Posted by aloksatoor View Post
I would not do that, the xray pin is way stronger than the K stuff. Someone on this thread put the xb4 rear hinge pin into the kyosho aluminum hangers and tore up the RF kyosho hanger. The xb4 has thick plastic inserts to flex and give a bit the kyosho will be ripped.

Shock tool Epers version is good very tight tolerances as well.
That makes no sense, i have plastic hingepin mount, there is no downside to a stronger pin.
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Old 05-02-2013, 10:56 AM   #6594
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That makes no sense, i have plastic hingepin mount, there is no downside to a stronger pin.
Oh yeah duh. The pic someone posted was for the rear aluminum hangers. I got confused I have a front aluminum hanger on my rb6 as well .
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Old 05-02-2013, 11:02 AM   #6595
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Sorry, but what is kit anti squat again?
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Old 05-02-2013, 11:12 AM   #6596
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Sorry, but what is kit anti squat again?
2 degrees
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Old 05-03-2013, 08:43 AM   #6597
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Originally Posted by aloksatoor View Post
Yep they bend quite easily in the right hands (me :P). I have since upgraded most of mine to the 3.5 mm versions have yet to bend one.
Ah, glad I'm not the only one.
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Old 05-03-2013, 10:06 AM   #6598
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Default Small Double Problem

Having some problems with my RB6 when it comes off jumps...specifically small doubles. Seems as when I take off the lip of a small double at a lower speed as not to over shoot it my car seems really unpredictable. Unpredictable both on take off and on the landing. The front end can be heavy on either side at any time. I hit the jump square but Im not sure why this is happening. Im running 32.5 in front white springs 27.5 rear gold springs. The car is dialed everywhere else on the track I just tend to pucker up every time I hit a double. Any ideas what could be causing this?
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Old 05-03-2013, 11:28 AM   #6599
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Having some problems with my RB6 when it comes off jumps...specifically small doubles. Seems as when I take off the lip of a small double at a lower speed as not to over shoot it my car seems really unpredictable. Unpredictable both on take off and on the landing. The front end can be heavy on either side at any time. I hit the jump square but Im not sure why this is happening. Im running 32.5 in front white springs 27.5 rear gold springs. The car is dialed everywhere else on the track I just tend to pucker up every time I hit a double. Any ideas what could be causing this?
My first inclination would be your ride height it too low, second would be a bad shock, or binding in the suspension, third would be, just a uneven jump
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Old 05-03-2013, 11:50 AM   #6600
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hinge pins bend easily i would check them all. maybe one side doesnt move as freely as the other at times.. honestly this is the best jumping buggy i ever drove
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