R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric Off-Road

    Hide Wikipost
Old 12-21-2016, 08:46 AM   -   Wikipost
R/C Tech Forums Thread 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

Print Wikipost

Like Tree16Likes
Reply
 
Thread Tools Search this Thread
Old 01-06-2013, 12:12 AM   #3976
Tech Regular
 
BranVita's Avatar
 
Join Date: May 2012
Location: Corona, CA
Posts: 467
Trader Rating: 39 (100%+)
Default

Thanks! If anyones interested in a set for the car PM me. I should have enough for 1 one car... but I will be placing another order for more if anyone wants a set.
__________________
Branden V.

Kyosho Rb6 | Orion R10 Pro | SchuurSpeed 17.5 | Savox 1257

Kyosho SC-R SP | Orion R10 Pro | SchuurSpeed 17.5 | Savox 1258
BranVita is offline   Reply With Quote
Old 01-06-2013, 01:04 AM   #3977
Super Moderator
 
Cpt.America's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2009
Location: Washington State
Posts: 11,081
Trader Rating: 52 (100%+)
Default

Quote:
Originally Posted by evolution03 View Post
Any specific reason why ? Do they last longer or do others just not work well with Kyosho ?
In short, the ceramic balls are too slippery smooth. They just don't work well with how the kyosho 1/10th diffs are engineered. In order to keep the diff from barking/slipping with ceramics, you have to crank the diff WAY too tight, which really hinders rotation.. the diff will feel aweful.

Now, a nice set of carbides natually grip the metal diff rings. So you can run the differ looser (not loose, just looser than with ceramics), and it will still grab. This gives you a better range when tuning how tight you run your diff. Want more rotation? back the diff off a smidge... want less rotation? tighten it up a smidge. The carbides put you right in the middle of that sweet spot.

That being said, ceramics work fine in other cars, like the B4.
__________________
A big thanks to my sponsors:
- Fantom Racing - www.fantomracing.com -
- Fusion Graphix- www.fusiongraphix.com -
- RCSpecialties -
Cpt.America is offline   Reply With Quote
Old 01-06-2013, 01:46 AM   #3978
Tech Elite
 
K_King's Avatar
 
Join Date: Jul 2006
Location: San Diego, CA
Posts: 4,190
Trader Rating: 39 (100%+)
Send a message via AIM to K_King
Default

Ceramics are also too hard, they wear out the rings a lot faster.
__________________
TLR - Spektrum - Pro-Line - Team Orion - Stickit1 - Schelle
K_King is offline   Reply With Quote
Old 01-06-2013, 10:02 AM   #3979
Tech Master
 
Join Date: Sep 2011
Location: Tennessee
Posts: 1,304
Trader Rating: 8 (100%+)
Default

Quote:
Originally Posted by Cpt.America View Post
In short, the ceramic balls are too slippery smooth. They just don't work well with how the kyosho 1/10th diffs are engineered. In order to keep the diff from barking/slipping with ceramics, you have to crank the diff WAY too tight, which really hinders rotation.. the diff will feel aweful.

Now, a nice set of carbides natually grip the metal diff rings. So you can run the differ looser (not loose, just looser than with ceramics), and it will still grab. This gives you a better range when tuning how tight you run your diff. Want more rotation? back the diff off a smidge... want less rotation? tighten it up a smidge. The carbides put you right in the middle of that sweet spot.

That being said, ceramics work fine in other cars, like the B4.
Ok that makes sense I appreciate your input
evolution03 is offline   Reply With Quote
Old 01-06-2013, 10:08 AM   #3980
Tech Master
 
Join Date: Dec 2010
Location: Sonora, California
Posts: 1,026
Trader Rating: 72 (100%+)
Default

Any tips for shaving weight for stock? I am 50 grams over and have done everything I could think of: titanium screws and ball studs, back to the plastic rear hubs, slipper eliminator, lightened pinion, delrin pivot balls.

I have a set of small bore velvets, thinking thats my next step.
b121774 is offline   Reply With Quote
Old 01-06-2013, 10:23 AM   #3981
Tech Elite
 
t0p_sh0tta's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2009
Location: Connecticut
Posts: 4,863
Trader Rating: 35 (100%+)
Default

What battery? Electronics? How tidy is your wiring?
__________________
I've met some of the strangest people while playing with my toy cars...
t0p_sh0tta is offline   Reply With Quote
Old 01-06-2013, 10:35 AM   #3982
Tech Master
 
Join Date: Dec 2010
Location: Sonora, California
Posts: 1,026
Trader Rating: 72 (100%+)
Default

orion r10pro, orion 90c shorty's, wires as short as I can get them.
b121774 is offline   Reply With Quote
Old 01-06-2013, 10:52 AM   #3983
Super Moderator
 
Cpt.America's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2009
Location: Washington State
Posts: 11,081
Trader Rating: 52 (100%+)
Default

Quote:
Originally Posted by b121774 View Post
orion r10pro, orion 90c shorty's, wires as short as I can get them.
Low pro servo will save you 10grams. But only 50 over is pretty light... thats right where I am at.
__________________
A big thanks to my sponsors:
- Fantom Racing - www.fantomracing.com -
- Fusion Graphix- www.fusiongraphix.com -
- RCSpecialties -
Cpt.America is offline   Reply With Quote
Old 01-06-2013, 10:53 AM   #3984
Tech Master
 
Join Date: Dec 2010
Location: Sonora, California
Posts: 1,026
Trader Rating: 72 (100%+)
Default

I am running a spektrum low pro
b121774 is offline   Reply With Quote
Old 01-06-2013, 10:56 AM   #3985
Super Moderator
 
Cpt.America's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2009
Location: Washington State
Posts: 11,081
Trader Rating: 52 (100%+)
Default

Quote:
Originally Posted by b121774 View Post
I am running a spektrum low pro
The only other two things I can think of right now, which I would never do

1. Run small bore velvet shocks (probably 15 grams lighter)
2. Run open cell foams (probably 5 grams lighter)
__________________
A big thanks to my sponsors:
- Fantom Racing - www.fantomracing.com -
- Fusion Graphix- www.fusiongraphix.com -
- RCSpecialties -
Cpt.America is offline   Reply With Quote
Old 01-06-2013, 12:25 PM   #3986
Tech Elite
 
eper's Avatar
 
Join Date: Jan 2010
Location: new milford, CT.
Posts: 2,604
Trader Rating: 14 (100%+)
Default

ummm stainless screws wont lighten the car stainless is one of the heviest metas ther are but they do look nice
__________________
new milford ct,
WOLCOTT HOBBIES.. TEAM SCREAM..PRO-LINE RACING,,RC Truck Stop, and FTM grip
I CALL IT HOW I SEE IT!!!!!
eper is offline   Reply With Quote
Old 01-06-2013, 12:31 PM   #3987
Tech Regular
 
Join Date: Oct 2009
Posts: 388
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by b121774 View Post
Any tips for shaving weight for stock? I am 50 grams over and have done everything I could think of: titanium screws and ball studs, back to the plastic rear hubs, slipper eliminator, lightened pinion, delrin pivot balls.

I have a set of small bore velvets, thinking thats my next step.
alu. motor plate? they must be lighter ... I'm thinking about getting one
ChadBlanton is online now   Reply With Quote
Old 01-06-2013, 12:47 PM   #3988
Tech Regular
 
Join Date: Mar 2011
Posts: 456
Default

Quote:
Originally Posted by Cpt.America View Post
The only other two things I can think of right now, which I would never do

1. Run small bore velvet shocks (probably 15 grams lighter)
2. Run open cell foams (probably 5 grams lighter)
Nothing wrong with option 1, but agree re 2.
__________________
Schumacher - RW Racing - RudeBits - TORCH
mikeyscott is offline   Reply With Quote
Old 01-06-2013, 01:00 PM   #3989
Tech Master
 
Troy Mckune's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jan 2009
Location: Vancouver, WA
Posts: 1,682
Trader Rating: 38 (100%+)
Default

Quote:
Originally Posted by b121774 View Post
Any tips for shaving weight for stock? I am 50 grams over and have done everything I could think of: titanium screws and ball studs, back to the plastic rear hubs, slipper eliminator, lightened pinion, delrin pivot balls.

I have a set of small bore velvets, thinking thats my next step.
STOP!

Your making me crazy. One of the best things about this car is the big bore shocks. Kyosho shocks are so incredibly good.

The extreme focus on shaving weight is misguided. Work on driving, car setup, motor/battery/gearing, and tires. If you think shaving another 50 grams will make you the fastest your wrong.

My $.02
__________________
Mckune Design / facebook page / RC America / XRAY / Lunsford Racing
Mckune Design is a custom manufacturer of CNC machined carbon fiber, G10, & composite laminate parts for RC, Aerospace, medical, and high tech industries.
Troy Mckune is offline   Reply With Quote
Old 01-06-2013, 01:17 PM   #3990
Tech Adept
 
Mxpdx's Avatar
 
Join Date: Jan 2012
Location: Oregon
Posts: 169
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by Troy Mckune View Post
STOP!

Your making me crazy. One of the best things about this car is the big bore shocks. Kyosho shocks are so incredibly good.

The extreme focus on shaving weight is misguided. Work on driving, car setup, motor/battery/gearing, and tires. If you think shaving another 50 grams will make you the fastest your wrong.

My $.02
WORD!
__________________
Kyosho RB6~Orion
Yokomo B-MAX2 Ver3
Mxpdx is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Ryde it like you stole it: the Ryde Drivers thread. old_skoolie Australian Racing 22970 10-17-2017 05:10 PM
Island Raceway & Hobby (IRH), Lindenhurst, NY - Indoor Off-Road Track in Long Island Asharus Northeast Racing Forum 15020 10-08-2017 07:30 PM
Kyosho Ultima RB5 Thread Drift_Buggy Electric Off-Road 14641 11-10-2015 08:28 AM
Kyosho Ultima SC aeRayls Electric Off-Road 2599 04-27-2014 04:30 PM



Currently Active Users Viewing This Thread: 2 (0 members and 2 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 01:17 PM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net