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Kyosho Ultima RB6 & RB6.6 Car Thread

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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
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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 01-15-2015, 08:53 AM
  #11536  
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Just curious, are those of you who are running the battery sideways running a 17.5 class or are you running modified?

The reason why I ask is that I find it interesting that a lot of people with the B5M, who are racing 17.5, are modifying their cars to allow the batter to be in-line. I don't know if the mod guys are doing this or not.

Last edited by Kraig; 01-15-2015 at 11:24 AM.
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Old 01-15-2015, 09:42 AM
  #11537  
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Originally Posted by kyle3333 View Post
Is there anyone out there machining chassis for people? I have done my side pods, but I would like to mill the chassis down. Unfortunately I don't have the proper equipment to do it correctly.

Thank you to those who sent pictures of their side pods, very helpful.

Hopefully Kyosho will come out with a side ways battery chassis and side pod package.
My son did his with a dremel, locks good.
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Old 01-15-2015, 10:06 AM
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I have a mill in my garage. I can mill out the chassis for people if they want the clean machined look . But it aint going to be for free.
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Old 01-15-2015, 08:04 PM
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Originally Posted by Kraig View Post
Just curious, are those of you who are running the battery sideways running a 17.5 class or are you running modified?

The reason why I ask is that I find it interesting that a lot of people with the B5M, who are racing 17.5, are modifying their cars to allow the batter to be in-line. I don't know if the mod guys are doing this or not.
Mod - I'd guess in mod vs 17.5, more weight is needed on the rear of the car to get the traction needed to drive out of the corner. 17.5T might not be as harsh on the rear tires when coming out of the corner, so less weight needed on the rear, want more steering so in-line would shift CG slightly forward, possibly avoiding issue of needing to add weight to the front of the car ... all speculation though! I've never run 17.5T so don't really know
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Old 01-17-2015, 07:38 AM
  #11540  
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Has anyone heard if there will be a 3 gear MM gearbox coming or a YZ2 style laydown MM gearbox??
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Old 01-17-2015, 05:16 PM
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Has anyone managed to mount a fan onto the motor plate in a mid motor config? I've been contemplating it, but not sure if it'll fit with the standard body.
I was thinking I could dremel a recess into the motor guard and fit an ESC sized fan, but was wondering if anyone had managed the next size up?
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Old 01-17-2015, 06:15 PM
  #11542  
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Default Trying to convert to midmotorrrr

Hey guys I unfortunately bought my rb6 used and did come with all the extra pieces and none of the mid motor parts. I am trying to compile a list of everything so I can order it at once. So can ya guys look it over and let me know if I am looking over anything..thanks in advance

UM722 Rear Shock stay (MM)
UM723 Gear Box Set (MM)(Comes with motor guard)
UM724 Rear Bulkhead (MM)
UM725 Rear Bumper (MM)
UM726 Suspension Holder Set (MM)
2x BRG001TS Flourine Shield Bearing 5x10x4 (idle gear bearings)
UM125 Idler gear shaft
UMW512 SP Idler gear
1x 3x18mm f/h screw

Have I forgotten anything?? And another question I have is do I need any extra bolts or is pretty straight forward take out of rear motor parts and put in mid motor parts? I can only hope its that simple lol

Thanks for the help!
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Old 01-17-2015, 06:57 PM
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Already added another piece..

UM709 Wing Stay Set
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Old 01-17-2015, 09:21 PM
  #11544  
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Rear Motor

10 3x8mm f/h hex
4 3x15mm button hex
5 3x35mm button screw
4 3x6x2 plastic collar
2 3x6mm button hex
2 3x8mm button hex
2 3x10mm f/h hex
2 3x12mm button hex
1 3x10mm button hex

Mid Motor

8 3x12mm button hex
3 3x18mm f/h hex
4 3x8mm f/h hex
3 3x10mm button hex
3 3x35mm button hex
2 3x10mm f/h hex
2 3x8mm button hex
3 3x6x3 plastic collars

difference

6 extra 3x8mm f/h hex
4 less 3x15mm button hex (none used)
2 extra 3x35mm button hex
1 extra 3x6x2mm plastic spacer
same 3x8 button hex
same 3x10mm f/h hex
6 needed 3x12mm button hex
2 needed 3x10mm button hex

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Old 01-18-2015, 10:54 PM
  #11545  
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Originally Posted by K_King View Post
How many would be interested in buying something like this?
I'm in on that as well
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Old 01-18-2015, 11:21 PM
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Would anyone who runs competitive stock 17.5 upload a pic or recommend a electronic setup? Also, what gearing on smaller tracks do you recommend as a starting point. I have been fairly lax with my setup and it is costing me. Currently running 69/31 running electronics like tebo 2013.
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Old 01-18-2015, 11:41 PM
  #11547  
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Originally Posted by RBraswell View Post
Would anyone who runs competitive stock 17.5 upload a pic or recommend a electronic setup? Also, what gearing on smaller tracks do you recommend as a starting point. I have been fairly lax with my setup and it is costing me. Currently running 69/31 running electronics like tebo 2013.
Pic attached: servo, ESC, battery, motor. Always had a problem with oversteer with the RB6 so moving the battery back helped a bit. Also running 69/31 with R1Wurks motor @ 30 degrees. Gets to about 155F after 6 minute heat.
Attached Thumbnails Kyosho Ultima RB6 & RB6.6 Car Thread-photo-2.jpg  
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Old 01-18-2015, 11:47 PM
  #11548  
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Originally Posted by Chansharp318 View Post
Rear Motor

10 3x8mm f/h hex
4 3x15mm button hex
5 3x35mm button screw
4 3x6x2 plastic collar
2 3x6mm button hex
2 3x8mm button hex
2 3x10mm f/h hex
2 3x12mm button hex
1 3x10mm button hex

Mid Motor

8 3x12mm button hex
3 3x18mm f/h hex
4 3x8mm f/h hex
3 3x10mm button hex
3 3x35mm button hex
2 3x10mm f/h hex
2 3x8mm button hex
3 3x6x3 plastic collars

difference

6 extra 3x8mm f/h hex
4 less 3x15mm button hex (none used)
2 extra 3x35mm button hex
1 extra 3x6x2mm plastic spacer
same 3x8 button hex
same 3x10mm f/h hex
6 needed 3x12mm button hex
2 needed 3x10mm button hex

thanks for sharing this. i am currently RM but will be changing to MM soon. i have all of the parts but wasnt sure of what extra bolts may be needed. so thanks for doing the leg work on that!
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Old 01-19-2015, 06:43 AM
  #11549  
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Originally Posted by beedee View Post
thanks for sharing this. i am currently RM but will be changing to MM soon. i have all of the parts but wasnt sure of what extra bolts may be needed. so thanks for doing the leg work on that!
Yep no worries!
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Old 01-19-2015, 06:35 PM
  #11550  
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Question for the guys that did the sideways battery mod. How far back did you put the battery?? Up against the brace or a little foward???
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