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Kyosho Ultima RB6 & RB6.6 Car Thread

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Old 12-21-2016, 08:46 AM   -   Wikipost
R/C Tech ForumsThread Wiki: Kyosho Ultima RB6 & RB6.6 Car Thread
Please read: This is a community-maintained wiki post containing the most important information from this thread. You may edit the Wiki once you have been a member for 90 days and have made 90 posts.
 
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 02-18-2015, 07:52 PM
  #11701  
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Kevin are you running the shorty sideways or normal? Did you end up running the 4 degree inserts upfront? How'd you like it?
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Old 02-19-2015, 06:51 AM
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Default shock collar question
Hey guys I just set my ride height last night 24mm on both sides. But my question is how far do you guy have to thread your collars. Mine seem really far down and compress the spring quite a bit. Definitely more than most the pictures I see. I'll post a pic when I get home but I'd say at least half way down the threads
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Old 02-19-2015, 07:02 AM
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You might want to measure how much of the shaft is exposed. You may have the wrong ends on the bottom or threaded to far up.
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Old 02-19-2015, 07:04 AM
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Originally Posted by Rgonzalez
You might want to measure how much of the shaft is exposed. You may have the wrong ends on the bottom or threaded to far up.
Thanks for the quick response! I'll check that!
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Old 02-19-2015, 08:02 AM
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Originally Posted by Chansharp318
Hey guys I just set my ride height last night 24mm on both sides. But my question is how far do you guy have to thread your collars. Mine seem really far down and compress the spring quite a bit. Definitely more than most the pictures I see. I'll post a pic when I get home but I'd say at least half way down the threads
I noticed my rear collars are down with the new lower arm shock location mod
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Old 02-19-2015, 08:12 AM
  #11706  
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Originally Posted by Tom87
I noticed my rear collars are down with the new lower arm shock location mod
Interesting I literally plan on drilling the new hole today. And I assume I'll need to use the short shock end
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Old 02-19-2015, 08:33 AM
  #11707  
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Don't use the short shock ends. Use the med or long ones.
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Old 02-19-2015, 09:42 AM
  #11708  
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Shock collar position is irrelevant honestly. Check that you have the proper ends and exposed shaft per whatever setup you may be using.
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Old 02-19-2015, 11:56 AM
  #11709  
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Originally Posted by Rgonzalez
Shock collar position is irrelevant honestly. Check that you have the proper ends and exposed shaft per whatever setup you may be using.
I'm just not trying to crank it down so far that it damages shafts or internal s or compress my spring so much that it damages it in some way
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Old 02-19-2015, 12:14 PM
  #11710  
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Originally Posted by Chansharp318
Hey guys I just set my ride height last night 24mm on both sides. But my question is how far do you guy have to thread your collars. Mine seem really far down and compress the spring quite a bit. Definitely more than most the pictures I see. I'll post a pic when I get home but I'd say at least half way down the threads
Originally Posted by Chansharp318
I'm just not trying to crank it down so far that it damages shafts or internal s or compress my spring so much that it damages it in some way
It also can indicate that your suspension is binding, bent hinge pin etc.
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Old 02-19-2015, 12:29 PM
  #11711  
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Originally Posted by purple rides
It also can indicate that your suspension is binding, bent hinge pin etc.
Hmm that shouldn't be the case I just replaced most of them because I had bent one. I'll check that just in case. Thx!
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Old 02-19-2015, 02:06 PM
  #11712  
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Front. And by the way I set ride height with all electronics. They are out now cuz I'm turning my batt sideways.
Attached Thumbnails Kyosho Ultima RB6 & RB6.6 Car Thread-image.jpg  
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Old 02-19-2015, 02:07 PM
  #11713  
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Back..it wouldn't let me load 2 in 1 post idk
Attached Thumbnails Kyosho Ultima RB6 & RB6.6 Car Thread-image.jpg  
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Old 02-19-2015, 02:12 PM
  #11714  
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Speaking of shock collars being high or low, why does it seem that regardless of brand the pros cars seem to have their shock collars screwed down like 1/4 inch or so. I realize it doesn't affect anything just curious why their cars are like that. 2wd or 4wd doesn't matter, almost like they use longer springs.
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Old 02-19-2015, 02:47 PM
  #11715  
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Springs might be worn out. They do sag after being run for sometime.
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