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 Tree17Likes
Reply
 
Thread Tools Search this Thread
Old 03-07-2014, 01:32 PM   #10036
Tech Master
 
cnelson3's Avatar
 
Join Date: Nov 2010
Location: Milwaukee, WI
Posts: 1,197
Trader Rating: 65 (100%+)
Default

Quote:
Originally Posted by chevmaro View Post
Still new to Kyosho. Can you tell me what size the stock pistons are? I know they are 5 hole for kit pistons. What are they equivalent to in a 2 and 3 hole piston?
The hole size is 1.35mm. For comparisons sake, "55's" are supposed to be 4 hole 1.3mm. Probably why gluing one hole shut only "kind of" worked.
cnelson3 is offline   Reply With Quote
Old 03-07-2014, 01:40 PM   #10037
Tech Master
 
cnelson3's Avatar
 
Join Date: Nov 2010
Location: Milwaukee, WI
Posts: 1,197
Trader Rating: 65 (100%+)
Default

.

Last edited by cnelson3; 03-07-2014 at 01:46 PM. Reason: double
cnelson3 is offline   Reply With Quote
Old 03-07-2014, 01:41 PM   #10038
Tech Master
 
Join Date: Sep 2011
Posts: 1,218
Trader Rating: 23 (100%+)
Default

Quote:
Originally Posted by cnelson3 View Post
The hole size is 1.35mm. For comparisons sake, "55's" are supposed to be 4 hole 1.3mm. Probably why gluing one hole shut only "kind of" worked.
In my B4 I always ran 2x1.6 or 3x1.4. In this car it seems like the 5 holes are working. Car is driving great but it a little soft on pack. I don't think I will change anything because it is driving great. Curious though what you are all running for oil with the kit 5 hole piston? I am using associated oil 32.5 Front / 27.5 Rear. Thanks.
chevmaro is offline   Reply With Quote
Old 03-07-2014, 01:45 PM   #10039
Tech Master
 
Join Date: Sep 2011
Posts: 1,218
Trader Rating: 23 (100%+)
Default

Quote:
Originally Posted by purple rides View Post
So what is the consensus on the new light weight chassis? Is it better for mm? or no real difference?
I hear it has more flex? Everytime I play with flex by removing screws I don't like it as much. It gets jumpy. I am running all screws in the chassis with kit chassis and it is running great.
chevmaro is offline   Reply With Quote
Old 03-07-2014, 02:20 PM   #10040
Tech Elite
 
aloksatoor's Avatar
 
Join Date: Dec 2010
Location: N California
Posts: 3,099
Trader Rating: 42 (100%+)
Default

LW is awesome for stock buggy. Helps the lighter car grip better (the stock with 1400~1500 gram weight felt loose and twitchy). I would not change it for a 1600 gram plus mod buggy. Stock is good enough.

I also did not like the car much without screws so back they go this weekend.
__________________
MP9 TKI3 | ZX6 | RB6 | MBX7r Eco
aloksatoor is offline   Reply With Quote
Old 03-07-2014, 03:26 PM   #10041
Tech Master
 
1967rs's Avatar
 
Join Date: Mar 2010
Location: Roy Utah
Posts: 1,027
Trader Rating: 55 (100%+)
Default

I just put together a mid motor car with the light weight chassis to run in stock class, I never ran the car with the stock chassis so I cant compare. I went with King's set-up from the reedy race (similar traction to my home track), all bulkhead and side screws were installed. The car pushed very bad in all the high speed turns, I cut the wing down and reduced the angle, then removed the rear weight. Now the car is awesome, I might still tune in a little more steering but the car is great fun to drive.
__________________
Thank you, Pemberton Raceworks, Team Tekin, Team Trinity and Sweep Racing USA for your outstanding support to the Military.

www.facebook.com/DoakWorksDesign
[email protected]
1967rs is offline   Reply With Quote
Old 03-07-2014, 04:24 PM   #10042
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

Quote:
Originally Posted by chevmaro View Post
I hear it has more flex? Everytime I play with flex by removing screws I don't like it as much. It gets jumpy. I am running all screws in the chassis with kit chassis and it is running great.
Changing those screws affects the torsional flex of the car (twisting) vs the lateral grip. With torsional flex you will always be at the mercy of the material and it's resiliency to flex and it's threshold. The more you twist the faster it wants to snap back. Some buddies of mine had that issue with their Tamiyas.
__________________
TLR - Spektrum - Pro-Line - Team Orion - Stickit1 - Schelle
K_King is offline   Reply With Quote
Old 03-07-2014, 07:24 PM   #10043
Tech Champion
 
ThePanda's Avatar
 
Join Date: Jul 2013
Location: Michigan
Posts: 6,991
Trader Rating: 64 (100%+)
Default

what does everybody run besides the stock wheels? mine feel a little flimsy, and seem to be a little son the small side diameter wise.
ThePanda is offline   Reply With Quote
Old 03-07-2014, 07:49 PM   #10044
Tech Regular
R/C Tech Elite Subscriber
 
Join Date: Mar 2012
Location: NYC
Posts: 254
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by chevmaro View Post
In my B4 I always ran 2x1.6 or 3x1.4. In this car it seems like the 5 holes are working. Car is driving great but it a little soft on pack. I don't think I will change anything because it is driving great. Curious though what you are all running for oil with the kit 5 hole piston? I am using associated oil 32.5 Front / 27.5 Rear. Thanks.
I use the same oils front and rear with 1.3x4 on all fours. and i felt like i needed more pack. was thinking of going 2x1.6 and 3x1.4, actually
glenng is offline   Reply With Quote
Old 03-07-2014, 07:53 PM   #10045
Super Moderator
 
Kraig's Avatar
 
Join Date: Aug 2001
Location: Sun Prairie, WI
Posts: 6,438
Trader Rating: 71 (100%+)
Default

Quote:
Originally Posted by glenng View Post
I use the same oils front and rear with 1.3x4 on all fours. and i felt like i needed more pack. was thinking of going 2x1.6 and 3x1.4, actually
Do you have big jumps on your track or are they on the smaller side?
__________________
There is great need for a sarcasm font.

You never know when it will strike, but there comes a moment at work when you know that you just aren't going to do anything productive for the rest of the day.

Sometimes I post just to look at my avatar.
Kraig is offline   Reply With Quote
Old 03-07-2014, 07:54 PM   #10046
Super Moderator
 
Kraig's Avatar
 
Join Date: Aug 2001
Location: Sun Prairie, WI
Posts: 6,438
Trader Rating: 71 (100%+)
Default

Quote:
Originally Posted by ThePanda View Post
what does everybody run besides the stock wheels? mine feel a little flimsy, and seem to be a little son the small side diameter wise.
I run the aka's but you need a low profile serrated wheel nut if you are running the stock rear axles for the rear wheels. You also have to make sure that the front wheels do not rub on the steering knuckle too.
__________________
There is great need for a sarcasm font.

You never know when it will strike, but there comes a moment at work when you know that you just aren't going to do anything productive for the rest of the day.

Sometimes I post just to look at my avatar.
Kraig is offline   Reply With Quote
Old 03-07-2014, 08:07 PM   #10047
Tech Regular
R/C Tech Elite Subscriber
 
Join Date: Mar 2012
Location: NYC
Posts: 254
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Kraig View Post
Do you have big jumps on your track or are they on the smaller side?
One big jump i kept slapping hard if i aired it out. Felt nice other then that jump
glenng is offline   Reply With Quote
Old 03-07-2014, 08:21 PM   #10048
Tech Champion
 
ThePanda's Avatar
 
Join Date: Jul 2013
Location: Michigan
Posts: 6,991
Trader Rating: 64 (100%+)
Default

Quote:
Originally Posted by Kraig View Post
I run the aka's but you need a low profile serrated wheel nut if you are running the stock rear axles for the rear wheels. You also have to make sure that the front wheels do not rub on the steering knuckle too.
ok, thanks!
ThePanda is offline   Reply With Quote
Old 03-07-2014, 08:51 PM   #10049
Tech Master
 
VenturaDC's Avatar
 
Join Date: Oct 2007
Location: Ventura, SoCal
Posts: 1,131
Trader Rating: 32 (100%+)
Default

Quote:
Originally Posted by ThePanda View Post
ok, thanks!
DE Speedline rims fit awesome as well, plus they come in multiple colors.
__________________
Dustin Colt45 Aguirre
Kyosho RB6--Futaba--HW--Shuurspeed 17.5
Kyosho SCR--Hitec--Lrp--Yeah 13.5
Durango Dex210--Futaba--Trakpower--Tacon 8.5
VenturaDC is offline   Reply With Quote
Old 03-08-2014, 02:00 PM   #10050
Tech Master
 
bigdaddy13's Avatar
 
Join Date: Oct 2008
Location: White Plains,Maryland
Posts: 1,305
Trader Rating: 84 (100%+)
Default

Quote:
Originally Posted by K_King View Post
I really like the LW chassis. I have all the steering I need but with more rear grip.
Rear or mid? And are you running all the screws?
__________________
Tony Purvis

"Life is hard,even harder if you're stupid." John Wayne
bigdaddy13 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: 1 (0 members and 1 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 07:36 AM.


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