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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 08-02-2016, 07:07 PM
  #13531  
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Couple of pics for comparison:

Old Crusty Chassis a and new RB6.6


Old Midship body and new LD




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Old 08-02-2016, 08:53 PM
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Hi there, bought my first k-car today, my kit is leaving suppliers today. Wondering what extra parts I need for standalone laydown 4 gear eg diff etc etc. would like to order in advance if possible
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Old 08-02-2016, 09:23 PM
  #13533  
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Originally Posted by barts71m
Hi there, bought my first k-car today, my kit is leaving suppliers today. Wondering what extra parts I need for standalone laydown 4 gear eg diff etc etc. would like to order in advance if possible
contact KBI for more info
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Old 08-02-2016, 11:46 PM
  #13534  
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Default New RB6.6
Just finished mine up tonight. I'm going to install my electronics tomorrow and hit the track with it.
Attached Thumbnails Kyosho Ultima RB6 & RB6.6 Car Thread-image.jpg  
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Old 08-03-2016, 01:59 AM
  #13535  
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are there enough parts in the kit to swap gear boxes out in seconds ie enough idlers etc... or do you need extra diffs, extra idlers, layshafts etc
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Old 08-03-2016, 06:29 AM
  #13536  
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Originally Posted by joecool
Just finished mine up tonight. I'm going to install my electronics tomorrow and hit the track with it.
That explains why you were not at the track last night. Looks good!

Originally Posted by StickyGeko
are there enough parts in the kit to swap gear boxes out in seconds ie enough idlers etc... or do you need extra diffs, extra idlers, layshafts etc
No, you can only build one transmission type at a time. To do what you want to do will depend on the type of transmission you want to build and what you already have built.
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Old 08-04-2016, 12:34 PM
  #13537  
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Added the new RB6.6. Intro video to the wiki, here it is anyways.

https://www.youtube.com/watch?v=vW_sR667utY
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Old 08-05-2016, 08:21 PM
  #13538  
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built mine 4 gear laydown first up. shell off to the painter. existing mid mount shell in use for now. tad bare at the back obviously
Attached Thumbnails Kyosho Ultima RB6 & RB6.6 Car Thread-img_9055.jpg   Kyosho Ultima RB6 & RB6.6 Car Thread-img_9054.jpg  
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Old 08-06-2016, 06:03 AM
  #13539  
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Ran my 3gear laydown mod RB6.6 last night at local club race.
TQ'd both rounds and won main.
Car was money on our high bite moist clay like surface. 3 others drove it and loved it...
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Old 08-06-2016, 12:41 PM
  #13540  
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Originally Posted by tobamiester
Ran my 3gear laydown mod RB6.6 last night at local club race.
TQ'd both rounds and won main.
Car was money on our high bite moist clay like surface. 3 others drove it and loved it...
Good results, hats off on the TQ and the win. Did you go shorty sideways?

I got to touch the box, hopefully mine will be home soon
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Old 08-06-2016, 01:14 PM
  #13541  
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Originally Posted by GIHOSU
Good results, hats off on the TQ and the win. Did you go shorty sideways?

I got to touch the box, hopefully mine will be home soon
yes sir, Pretty close to Tebo's HRS setup.
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Old 08-06-2016, 01:16 PM
  #13542  
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What's a good setup for a loose to medium traction track for the rb6.6?
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Old 08-06-2016, 03:17 PM
  #13543  
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So I was just about to start the step 44 where you start to assemble the transmission and was messing around with the case seeing how it looks before I assemble it and found that the molds are not straight. Again these are two empty cases that I just stuck together. Even after forcing it to close the gaps you can see a hole where dirt can easily get in. What would you do?



This is a picture of one side on a flat surface. You can see where it isn't touching. Same for the other side just one is more than the other.



You can see the gap even after closing the two cases. You can actually se thru the cases which can't be good.

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Old 08-06-2016, 03:58 PM
  #13544  
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Originally Posted by DriveKyosho
So I was just about to start the step 44 where you start to assemble the transmission and was messing around with the case seeing how it looks before I assemble it and found that the molds are not straight. Again these are two empty cases that I just stuck together. Even after forcing it to close the gaps you can see a hole where dirt can easily get in. What would you do?



This is a picture of one side on a flat surface. You can see where it isn't touching. Same for the other side just one is more than the other.



You can see the gap even after closing the two cases. You can actually se thru the cases which can't be good.

It'll be fine. Mine (and others) were like that. Screw it together and it will run fine.
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Old 08-06-2016, 05:00 PM
  #13545  
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I'll never again buy that crap idc how good it is. Just like how I did with AE.
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