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 Tree25Likes
Reply
 
Thread Tools Search this Thread
Old 10-23-2012, 02:12 PM   #1996
Tech Initiate
 
Join Date: Apr 2012
Location: Not sure
Posts: 40
Default

Quote:
Originally Posted by K_King View Post
Testing is hard to do. Think about it for a second. The car is built for racing, not bashing, so it doesn't make sense to see how much abuse it can take and then adjust accordingly. That is my opinion alone. If that would happen the cars would be heavier, thicker, and overall built for abuse instead of racing. Unfortunately its the price we pay for wanting a pure racing car. Yes things can be improved, but that goes with everything, and I'd rather Pros test a car to make sure its good compared to average drivers who club race.

I mean no offense.

I respectfully disagree with you on most of what you are saying about the testing. Yes testing is hard but its worth it in the long run. Most of the problems that are happening currently are in a racing condition, and not bashing. I agree that the top guys should be testing the cars but I also believe the lower B and C drivers should have a crack at it like they did with the RT5. The testing in my option wasnt done as well it should have been done, We all over shoot landings in racing condition with hard landings and if this is a problem it should have presented its self fairly quickly like it has when the car came out.

Usually the General population is a good test of durabilty for a car and thats where you normally find alot of the hidden weak items but why not make sure.
sdnspecial is offline   Reply With Quote
Old 10-23-2012, 02:17 PM   #1997
Tech Elite
 
Join Date: Jun 2010
Location: Southern California
Posts: 2,167
Trader Rating: 77 (100%+)
Default

I have killed my car flat landing so hard off the triple to rip out rear studs and crack the shock tower. My chassis is fine.

Think maybe it is an isolated issue. Maybe a batch or something.

I am horrible and this car has been great so far in the durability stand part.
goin2drt is offline   Reply With Quote
Old 10-23-2012, 02:23 PM   #1998
Tech Elite
 
t8rtot's Avatar
 
Join Date: Nov 2008
Posts: 2,010
Trader Rating: 14 (94%+)
Default

nvmd you guys figured it out...
__________________
Sfida
t8rtot is offline   Reply With Quote
Old 10-23-2012, 03:36 PM   #1999
Tech Adept
 
Join Date: Jan 2012
Location: concord ca.
Posts: 230
Default

here it is for better or worse. it weighs about a nickle (doesn't register on my digital scale). i'll epoxy it and get about 2mm longer screws.
it's made from a piece of black anodized door threshold i had in my shed.



any input from you guys before i set it
would be appreciated.
ems

Last edited by Eric Summers; 10-23-2012 at 03:50 PM.
Eric Summers is offline   Reply With Quote
Old 10-23-2012, 03:41 PM   #2000
Moderator
 
Posvar's Avatar
 
Join Date: Nov 2009
Location: North Carolina by way of SoCal!
Posts: 4,636
Trader Rating: 462 (100%+)
Default

Is it 2mm thick?
__________________
Having fun with my 9 year old and running Kyosho cars!
Posvar is offline   Reply With Quote
Old 10-23-2012, 03:49 PM   #2001
Tech Adept
 
Join Date: Jan 2012
Location: concord ca.
Posts: 230
Default

according to my caliper about 2.30mm
also is anyone having The Problem with Mid Motor?
ems
Eric Summers is offline   Reply With Quote
Old 10-23-2012, 03:52 PM   #2002
Tech Elite
 
K_King's Avatar
 
Join Date: Jul 2006
Location: San Diego, CA
Posts: 4,192
Trader Rating: 39 (100%+)
Send a message via AIM to K_King
Default





Perhaps if they molded the chassis to fit the tranny case better it could fix any issues.

RFury thinks it could.
__________________
TLR - Spektrum - Pro-Line - Team Orion - Stickit1 - Schelle
K_King is offline   Reply With Quote
Old 10-23-2012, 04:00 PM   #2003
Tech Adept
 
Join Date: Jan 2012
Location: concord ca.
Posts: 230
Default

first thing i noticed with the chassis is where i believe the circles started to mill the recessed areas.
this chassis is why i purchased my RB6 (like my 811 BE).
ems
PS Kyosho will make it right.
until then i was born to build Lincon logs, tinker toys and Legos and some where (i do still have all my hot wheels since i was 5)
putn' things together is fun trouble shootn' well got to do what you got to do, that's why i rely on your input especially electronics thru out this site.
I have a great appreciation for the tool and die engineers.
Eric Summers is offline   Reply With Quote
Old 10-23-2012, 04:09 PM   #2004
Tech Elite
 
Rfury's Avatar
 
Join Date: Apr 2007
Location: NW Ga
Posts: 4,503
Trader Rating: 6 (100%+)
Send a message via AIM to Rfury Send a message via Yahoo to Rfury
Default

Quote:
Originally Posted by K_King View Post
Perhaps if they molded the chassis to fit the tranny case better it could fix any issues.

RFury thinks it could.
Yeah, it is just a theory. The bends that I have seen in this thread appear to be at the front or rear of the opening for the tranny case(at least the initial impact site). The tranny case angles up at the front and rear and would leave a gap when the tranny is installed. As thin as this area is it would not take much to bend it.

Changing the chassis or the tranny case to snugly fit the opening would probably solve it.

If you look at the RB5 T-plate, you will see that it is molded to fit the bottom of the tranny case exactly.
__________________
Kyosho RB6
Kyosho ZX6
Kyosho MP9e TKI
Rfury is offline   Reply With Quote
Old 10-23-2012, 04:16 PM   #2005
Tech Adept
 
Join Date: Jan 2012
Location: concord ca.
Posts: 230
Default

i noticed that the trani does not bottom out in the recessed area maybe the CNC machine was set too deep?
ems

Last edited by Eric Summers; 10-23-2012 at 04:34 PM.
Eric Summers is offline   Reply With Quote
Old 10-23-2012, 04:17 PM   #2006
Tech Elite
 
Rfury's Avatar
 
Join Date: Apr 2007
Location: NW Ga
Posts: 4,503
Trader Rating: 6 (100%+)
Send a message via AIM to Rfury Send a message via Yahoo to Rfury
Default

More likely the design was for it to be as it is, but it should have been shaped to match the case. It is not easy to CNC an angle like that.

As long as the bends don't cause the tranny to not be square to the chassis and bulkhead, it should not effect the car at all.
__________________
Kyosho RB6
Kyosho ZX6
Kyosho MP9e TKI
Rfury is offline   Reply With Quote
Old 10-23-2012, 04:37 PM   #2007
Tech Adept
 
Join Date: Jan 2012
Location: concord ca.
Posts: 230
Default

I noticed also the step of the recessed area that would make up the rounded
edges of the bottom of trani right?
ems
Darn Fury you have a Bulk load of posts.
i have a lil' time and get a great kick out of all this
i'm more worried of keeping 3500 Dodge on the road to pay for all this.
Eric Summers is offline   Reply With Quote
Old 10-23-2012, 04:39 PM   #2008
Tech Elite
 
Rfury's Avatar
 
Join Date: Apr 2007
Location: NW Ga
Posts: 4,503
Trader Rating: 6 (100%+)
Send a message via AIM to Rfury Send a message via Yahoo to Rfury
Default

Quote:
Originally Posted by Eric Summers View Post
I noticed also the step of the recessed area that would make up the rounded
edges of the bottom of trani right?
ems
Not quite. As long as the step is a 90 degree angle, there will be a gap.

If you look at this you can see the part I am talking about.



The very bottom flat portion of the case appears to be smaller than the lowest flat portion of the chassis.
__________________
Kyosho RB6
Kyosho ZX6
Kyosho MP9e TKI
Rfury is offline   Reply With Quote
Old 10-23-2012, 04:47 PM   #2009
Tech Elite
 
Rfury's Avatar
 
Join Date: Apr 2007
Location: NW Ga
Posts: 4,503
Trader Rating: 6 (100%+)
Send a message via AIM to Rfury Send a message via Yahoo to Rfury
Default

I also don't have an RB6 to look at in the flesh. I am just looking at the pics and trying to put it together in my head.

Edit: If someone could measure how wide the flat spot on the case is(the lowest spot) and how wide the lowest part of the opening in the chassis is, that would be great and would be very telling.
__________________
Kyosho RB6
Kyosho ZX6
Kyosho MP9e TKI
Rfury is offline   Reply With Quote
Old 10-23-2012, 04:49 PM   #2010
Tech Adept
 
Join Date: Jan 2012
Location: concord ca.
Posts: 230
Default

I Will stay upon this,
my wife works for a Patented Lawyers office, but her boss knows and is an engineer and the like he may know what the flaw should be.
if arises just call Derrick, he was Well Aware even though he said it was only three.
but i had fun making my LIL' part.
better safe than sorry.
Oh what fun
Eric Summers 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 22977 11-13-2017 05:09 PM
Island Raceway & Hobby (IRH), Lindenhurst, NY - Indoor Off-Road Track in Long Island Asharus Northeast Racing Forum 15026 11-02-2017 04:19 PM
Kyosho Ultima RB5 Thread Drift_Buggy Electric Off-Road 14641 11-10-2015 09:28 AM
Kyosho Ultima SC aeRayls Electric Off-Road 2599 04-27-2014 05:30 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 01:37 AM.


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