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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

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Old 10-23-2012, 09:34 PM   #2026
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Unless the screws strip out of the trans case or the case breaks, I would not see the chassis bending as it has for some people with a case that fits properly.
I agree, if it fit in perfect we wouldn't have a problem
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Old 10-23-2012, 10:20 PM   #2027
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Hard to say what happens with things. Mine I know has taken tons of abuse when I cant clear the rather large triple at West Coast RC in stock and have cased the top of the last jump who knows how many times and nothing. I don't think running chassis tape would fix that kind of issue.
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Old 10-23-2012, 10:22 PM   #2028
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i wonder why they made the tail section of the chassis thinner then the rest? anyone have any ideas on this, and are the people who are denting the chassis setting ride height on the thinner part of the chassis. the way the setup sheet look it should be measured under the rear bulkhead, just wonder if that may be causing excessive chassis slap
That would be a good question to direct to the designer. Nobody I know who has the car has had this happen, with or without chassis tape.
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Old 10-23-2012, 10:26 PM   #2029
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Originally Posted by powerslave View Post
I just stripped my chassis down to ship to Kyosho. Took some measurements with my calipers,the rear chassis thickness is 2.5mm the milled out trans section seems to be 2.1mm deep,that little square doesn't stand a chance.

I wish they would have made a cut out in the chassis for the transmission!
That is a sensible alternative, but how long until they actually can make this change when they cant even keep rear arms in stock?
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Old 10-24-2012, 03:06 AM   #2030
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That is a sensible alternative, but how long until they actually can make this change when they cant even keep rear arms in stock?
In the mean time, would a small polycarbonate plate, maybe made from bodyshell lexan, cut to fit the rear section and screwed on underneath protect the chassis sufficuently?

It may help protect from scratching, and spread the load of any impacts over a bigger area?
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Old 10-24-2012, 05:14 AM   #2031
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had to go back 5 pages to see what all the chat was about, while going back from page 136 to 131 I found it funny as a couple of people who posted what seemed like detailed info about the design didn't even have an rb6. no big deal just funny. So when I finally saw the pic I just thought about how nice those A.P.E. plates are....
Surely in testing someone at some point cased that spot so I would be surprised if K got the "design" wrong.
Does the chassis get treated after machining? perhaps this is simply a bad batch of chassis.
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Old 10-24-2012, 06:55 AM   #2032
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This posted earlier by steam "I was told the next batch of cars should be here in the US in early November."
got me thinking Kyosho putn' out more thin batched chassis.
ems
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Old 10-24-2012, 08:31 AM   #2033
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Quote:
Originally Posted by jpcopeland1 View Post
I don't think running chassis tape would fix that kind of issue.
Quote:
Originally Posted by jpcopeland1 View Post
Nobody I know who has the car has had this happen, with or without chassis tape.
Nobody is saying that any kind of chassis tape would help this issue. The two things that we think would help this temporary issue, are

1) Filling in the excess recess area, under the tranny case, with clay (as suggested by kyosho). and/or

2), running a plastic (or whatever material) skid plate over the back of the chassis.
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Old 10-24-2012, 08:43 AM   #2034
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Modeling clay?
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Old 10-24-2012, 08:48 AM   #2035
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anyone tested mid-motor on dirt/clay? what springs and set up are you trying?
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Old 10-24-2012, 08:58 AM   #2036
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Modeling clay?
That should work fine. You just need something fairly dense, but still pliable enough to fill in the gap.
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Old 10-24-2012, 09:01 AM   #2037
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ok
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Old 10-24-2012, 09:01 AM   #2038
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I jut noticed the indent on my chassis. I've had it for 3 weeks. Makes me wanna hold onto my rb5... Just in case.
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Old 10-24-2012, 09:06 AM   #2039
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Won't adding clay bump up the weight?
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Old 10-24-2012, 09:11 AM   #2040
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It will be such a small amount of clay......
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