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 Tree14Likes
Reply
 
Thread Tools Search this Thread
Old 01-08-2013, 04:39 PM   #4081
Tech Elite
 
t8rtot's Avatar
 
Join Date: Nov 2008
Posts: 2,008
Trader Rating: 14 (94%+)
Default

I actually prefer developing the car myself, it stops us from being like the 1/8th associated guys adapting odd parts and modding an already prefect car
__________________
Sfida
t8rtot is offline   Reply With Quote
Old 01-08-2013, 04:51 PM   #4082
Tech Elite
 
Join Date: Sep 2007
Location: All 48 states...
Posts: 2,053
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by t8rtot View Post
I actually prefer developing the car myself, it stops us from being like the 1/8th associated guys adapting odd parts and modding an already prefect car
Modding will happen regardless its how new designs come about. I'm not saying to hop on here and give us the latest setup either but a few pointers here and there wouldn't hurt. I personally work alot so sometimes I don't get to race for like a month. When I do get the chance to toss the car down I have to deal with the mod guys. I refuse to run 17.5 and trying to jump on pace with the mod crew to try and not become traffic is rough. So a few pointers on what's the latest what has and has not worked from those that are paid to race I'm sure would be welcomed. I only bring this up because it seems this is the only brand that their drivers don't offer much input on the vehicles. Just my .02...if its too much kindly give it back as I am not rich
Gitsum is offline   Reply With Quote
Old 01-09-2013, 12:59 PM   #4083
Tech Initiate
 
Join Date: Aug 2012
Posts: 49
Default

Can someone explain with the different caster blocks will change on the car? I understand the different between the narrow and wide track, but I am unsure of the difference the 0, 2, & 4 and what each would do to car.
Bluehills315 is offline   Reply With Quote
Old 01-09-2013, 01:02 PM   #4084
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 Bluehills315 View Post
Can someone explain with the different caster blocks will change on the car? I understand the different between the narrow and wide track, but I am unsure of the difference the 0, 2, & 4 and what each would do to car.
0 adds nothing to caster on top of the kickup
2 adds +2 caster to the kickup
4 adds +4 caster to the kickup

So if you are running 25 caster on the kickup, 0 inserts give you 25 caster. 2s give you 27, etc.
__________________
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 01-09-2013, 01:06 PM   #4085
Tech Elite
 
K_King's Avatar
 
Join Date: Jul 2006
Location: San Diego, CA
Posts: 4,185
Trader Rating: 38 (100%+)
Send a message via AIM to K_King
Default

More caster smooths the steering down. Less aggressive.
__________________
TLR - Spektrum - Pro-Line - Team Orion - Stickit1 - Schelle
K_King is offline   Reply With Quote
Old 01-09-2013, 01:17 PM   #4086
Tech Initiate
 
Join Date: Aug 2012
Posts: 49
Default

Quote:
Originally Posted by Cpt.America View Post
0 adds nothing to caster on top of the kickup
2 adds +2 caster to the kickup
4 adds +4 caster to the kickup

So if you are running 25 caster on the kickup, 0 inserts give you 25 caster. 2s give you 27, etc.
Thanks. Now a question to add to that. What will more caster do versus less? What effect does the kick up have versus the caster?

Assuming I understand correctly, it is possible to run 25 caster, 27, 29, 30, 32, &. 34? Or am I mistaken here?
Bluehills315 is offline   Reply With Quote
Old 01-09-2013, 01:49 PM   #4087
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 Bluehills315 View Post
Thanks. Now a question to add to that. What will more caster do versus less? What effect does the kick up have versus the caster?

Assuming I understand correctly, it is possible to run 25 caster, 27, 29, 30, 32, &. 34? Or am I mistaken here?
Actually, the inserts can be run backwards for even more combonations. You can actually have +2 or -2 from either the 25 kickup, or the 30... so lots of steps between 21 and 34.

Caster- Its all about tire contact patch and smooth driving. Caster provides two things a) camber change as the tire turns, and b) car will tend to track straighter as you drive

So if the car isn't leaning at ALL (very very slow speed turns), you get the most steering out of 0 caster. But if the car leans while you are turning, you end up with positive camber, which decreases tire patch. So to keep tire patch, caster induces camber as you turn the wheel. If you run too MUCH caster, you get too much camber introduced as you turn. So for example, 30 degrees of caster intruduces a lot camber as you turn. So if the car isn't leaning, you actually end up with less contact patch. But in the high speed sections of the track where the car is leaned all the way over, you end up with more contact patch.

So in general, you have the following

less caster (25) gives you more steering when driving slow (infield), and less steering in the high speed sections when the car is rolled over

more caster (30) gives you less steering when driving slow (infield) and more steering in the high speed sections when the car is rolled over

Kickup- Kickup is the term used for the angle the front suspension arms sit in relation to the flat chassis. If you understand "squat" or "anti-squat" at the rear of the car, this is the same thing, but at the opposite end of the car. As the car dives, the angle of the chassis is no longer parallel to the ground (it pitches, as it dives). So if you ran 0 kick up (arms flat), and the car pitched forward, there would be natural resistance in the angle of the arms. Weight would be transferred into the horizontally into the hinge pins, instead of up into the shocks, which means less weight transfer to the front. So more kickup means more weight transfer to the front of the car, off-throttle or braking. (a bit hard to explain, I need my hands)
__________________
A big thanks to my sponsors:
- Fantom Racing - www.fantomracing.com -
- Fusion Graphix- www.fusiongraphix.com -
- RCSpecialties -

Last edited by Cpt.America; 01-09-2013 at 02:21 PM.
Cpt.America is offline   Reply With Quote
Old 01-09-2013, 02:30 PM   #4088
Tech Elite
 
asc6000's Avatar
 
Join Date: Jan 2011
Location: Meridian Idaho
Posts: 3,386
Trader Rating: 15 (100%+)
Default

Quote:
Originally Posted by Bluehills315 View Post
Can someone explain with the different caster blocks will change on the car? I understand the different between the narrow and wide track, but I am unsure of the difference the 0, 2, & 4 and what each would do to car.
The Capt explained your direct question. Based on your curiosity I thought you might like this thread too Tune With Camber Links
__________________
"you reach the limit, you touch the limit, then you pass the limit, now there is a new limit"
Ayrton Senna
asc6000 is offline   Reply With Quote
Old 01-09-2013, 03:17 PM   #4089
Tech Elite
 
Phil Trotta's Avatar
 
Join Date: Feb 2005
Posts: 2,421
Trader Rating: 4 (100%+)
Default

I'm running rb6 in modified. I'm about to install a 1 mm limiter in rear shock can someone give me an overall shock lengthy or shock shaft length as a starting reference Also are u guys really playing with lengths for off power weight transfer?

Pillars has no rules........
__________________
PHIL TROTTA
Phil Trotta is offline   Reply With Quote
Old 01-09-2013, 07:14 PM   #4090
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 JACK HAMMER View Post
Also are u guys really playing with lengths for off power weight transfer?..
uhm.. I do. I fine tune droop all the time. I use it to tune weight transfer, as well as how the car rolls in the corners.
__________________
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 01-10-2013, 06:29 AM   #4091
Tech Regular
 
Join Date: May 2009
Posts: 385
Trader Rating: 38 (100%+)
Default

HELP? Panther slicks on Carpet. any feedback guys? running mid motor.
noworries is offline   Reply With Quote
Old 01-10-2013, 07:00 AM   #4092
Tech Elite
 
t8rtot's Avatar
 
Join Date: Nov 2008
Posts: 2,008
Trader Rating: 14 (94%+)
Default

Quote:
Originally Posted by MBUCK View Post
HELP? Panther slicks on Carpet. any feedback guys? running mid motor.
slicks? is that the best tire for the track? may be but i know alot of guys like the schumacher mini pins etc.. http://www.amainhobbies.com/product_...Tires-Yellow-2

secondly, i'd go straight to petit rc and look through the carpet setups, they should have a base setup to get you started and tweak from there.

lets see the car if you have it built up! good luck
__________________
Sfida
t8rtot is offline   Reply With Quote
Old 01-10-2013, 07:05 AM   #4093
Tech Regular
 
Join Date: May 2009
Posts: 385
Trader Rating: 38 (100%+)
Default

Quote:
Originally Posted by t8rtot View Post
slicks? is that the best tire for the track? may be but i know alot of guys like the schumacher mini pins etc.. http://www.amainhobbies.com/product_...Tires-Yellow-2

secondly, i'd go straight to petit rc and look through the carpet setups, they should have a base setup to get you started and tweak from there.

lets see the car if you have it built up! good luck
Thank you. Not done building yet. OMG love the shocks. Can't keep my hands off em.
noworries is offline   Reply With Quote
Old 01-10-2013, 07:09 AM   #4094
Tech Master
 
Join Date: Apr 2006
Posts: 1,116
Trader Rating: 18 (100%+)
Default

If anybody is looking to own an RB6 a friend of mine is selling his here

Basically just ran for one race, the Novak race in Omaha last weekend.
__________________
Kyle Simmonds | RB6 | FS2SP | TKI3
KSimmonds is offline   Reply With Quote
Old 01-10-2013, 07:11 AM   #4095
Tech Elite
 
t8rtot's Avatar
 
Join Date: Nov 2008
Posts: 2,008
Trader Rating: 14 (94%+)
Default

Quote:
Originally Posted by MBUCK View Post
Thank you. Not done building yet. OMG love the shocks. Can't keep my hands off em.
the entire car just shines of excellence, i told you they were the best.

i would recommend putting just a dab (and i mean just a dab) on the little black cap on the bottoms, i had 2 loosen and come off.

well good luck with the rest of build and we're here to answer any more questions!
__________________
Sfida
t8rtot 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 22957 09-22-2017 12:16 AM
Island Raceway & Hobby (IRH), Lindenhurst, NY - Indoor Off-Road Track in Long Island Asharus Northeast Racing Forum 15015 08-29-2017 12:36 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 (1 members and 1 guests)
Gayosaka
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 12:32 AM.


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