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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 12-21-2013, 10:00 AM   #9091
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Default Cody Turner - Mid Motor RB6

A quick vid for all the RB6 guys!

+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.


In HD here: http://youtu.be/Woxowr4JtZQ
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Old 12-21-2013, 11:03 AM   #9092
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Other option is to stick the reciever next to the speedo. I have put a couple of pieces of brass sheet under the reciver to balance the chassis side to side.

Where can you get brass sheets?
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Old 12-21-2013, 12:55 PM   #9093
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Where can you get brass sheets?
Ebay
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Old 12-21-2013, 03:43 PM   #9094
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.5mm thick on the brass and a shorty sized peice weighs a dime under 3/4 oz an a peice the size of the lipo trey in chris's car comes in at an ounce keepin it as low as possible too made 2 1oz under trey and 4 under shorty bits 2 full size an 2 at 3/4 length for $10ish
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Old 12-21-2013, 03:52 PM   #9095
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.5mm thick on the brass and a shorty sized peice weighs a dime under 3/4 oz an a peice the size of the lipo trey in chris's car comes in at an ounce keepin it as low as possible too made 2 1oz under trey and 4 under shorty bits 2 full size an 2 at 3/4 length for $10ish
what?
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Old 12-21-2013, 04:06 PM   #9096
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5k to start. It feels similar to my diff right now. If it's too much I have 3k to try. I run my diff pretty locked in mod.
How do you think the gear diff will handle a medium bite track?
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Old 12-21-2013, 04:06 PM   #9097
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.5mm thick on the brass and a shorty sized peice weighs a dime under 3/4 oz an a peice the size of the lipo trey in chris's car comes in at an ounce keepin it as low as possible too made 2 1oz under trey and 4 under shorty bits 2 full size an 2 at 3/4 length for $10ish
My head hurts reading that !
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Old 12-22-2013, 06:45 AM   #9098
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Oops had a bottle a 21 year old malt last night my bad
I'll show ya the brass kit next time at Silverstone chris it'll make sense then
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Old 12-22-2013, 07:17 AM   #9099
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Oops had a bottle a 21 year old malt last night my bad
I'll show ya the brass kit next time at Silverstone chris it'll make sense then
There is a 50g brass sheet under my lipo as well. Also have the weight blocks if I want to add even more weight. TBH, since I've been running the DB2, I havent run the RB6, its set up for low grip now.
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Old 12-22-2013, 07:39 AM   #9100
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Are u guys getting the kyosho diff balls for rebuilds or purchasing other brands
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Old 12-22-2013, 07:46 AM   #9101
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Are u guys getting the kyosho diff balls for rebuilds or purchasing other brands
The ones which come with the rb6 kit are carbide, so should last a while before you need to replace them. I've been using a mix of avid and RudeBits carbide balls in my lazer/rb6 diffs.
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Old 12-22-2013, 08:08 AM   #9102
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So at what point does adding weight negate the mid motor effect? I mean this buggy is already fairly heavy, at some point it would seem better to drop the weights and go back to rear motor, I run on both clay and hard packed blue groove and after spending some time on the setup I've got plenty of steering, at least in 17.5 I can see how much more pull I have on corner exit then some of the heavily weighted MM's.

I'm only asking cause I've toyed with the idea of going MM but not a big fan of adding a bunch of weight
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Old 12-22-2013, 08:11 AM   #9103
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i got a half a mill thick peice under the whole trey chris 28g and 18g for under the shorty if needed
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Old 12-22-2013, 08:39 AM   #9104
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Originally Posted by B00t13g View Post
How do you think the gear diff will handle a medium bite track?
It can work. Just need to find the right oil. I think it will be anywhere between 1k and 5k but on the lower end.
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Old 12-22-2013, 04:53 PM   #9105
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It can work. Just need to find the right oil. I think it will be anywhere between 1k and 5k but on the lower end.
Kevin I was looking at your latest setup on petit Rc nd noticed your using different pistons, which brand are they?
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