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Kyosho Ultima RB6 & RB6.6 Car Thread

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Kyosho Ultima RB6 & RB6.6 Car Thread

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Old 12-21-2016, 08:46 AM   -   Wikipost
R/C Tech ForumsThread 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 07-14-2016, 06:18 PM
  #13396  
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Tomorrow I'll have some time to look up prices of the corresponding rb6 parts. I don't expect the 6.6 prices to be exactly the same, but this way we'll have an estimate.

Originally Posted by fenton06 View Post
It's because no one has the p/n's yet. I would also guess that Kyo America doesn't even have them on their site yet. It'll be a couple days/weeks probably.
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Old 07-14-2016, 06:28 PM
  #13397  
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Does anyone know if the old bodies will fit the new chassis ?
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Old 07-14-2016, 07:32 PM
  #13398  
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Too soon to tell
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Old 07-14-2016, 08:10 PM
  #13399  
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Originally Posted by jag5508 View Post
Does anyone know if the old bodies will fit the new chassis ?
Given that the wheel base is 13mm longer, I'd say a direct fit likely won't be a case. I'd think length wise you'd be able to make it work though. Now if the width of the new car/chassis is noticeable, then you might find the fittment to be a issue there
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Old 07-14-2016, 10:42 PM
  #13400  
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Think someone has already mentioned about the wheelbase? They have carried over the same product description from the RB6. (13mm longer than the RB5)

The mid bulkheads for 3 or 4 gear are the same.. Part number UM740 if you have a look in the manual has 2 pieces on the tree... A laydown rear bulkhead (has 3 inner stud fixings) and a mid bulkhead still with 2 stud fixings. For mid you will still be able to use the RB6 item I'm sure.

Also in the instructions you can clearly see the 4 gear laydown could be used, whether or not all the bits are in there to do so is unclear as you would have thought it would have been in the release. The only bits that may prevent that is the lack of a motor spacer and a reverse gear cover (I'm sure it will be possible to work. Round this though in much the same way people converted the rear motor 3 gear to a mid 3 gear for the RB6)

In would be interesting to hear some feed back from tanner if he has back to backed the 3 and 4 gear laydown.
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Old 07-15-2016, 05:59 AM
  #13401  
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Default absolutely!

Originally Posted by Kraig View Post
$399.99.

One thing that they don't talk about but looking at the manual it appears you can run a 4 gear laydown transmission like Tanner is currently using.

Plus, with the 3 gear transmission the wing now mounts behind what I am calling the rear bulkhead. That should make it easier to get access to the inner ballstuds. I am curious if you could run a three gear laydown with the wing in that position, something tells me you can but I won't know for sure until someone confirms.
If you have a good look at pages 11, 27 and 28 of the manual, you can tell that the new 3 gear standup gearbox and laydown gearboxes are designed to be assembled from either left or right motor mounting positions.

It's especially clear from page 11 (parts), where you can see the 4 gear shaft holes are located.

It's just there in case drivers want to fiddle with a 4 gear laydown. I drive on a clay track and am super impressed with the yz2 (4 gear) and the new rb6.6 kit gives you all the options to tune.

I just wonder if I can just drill new mounting holes in my current rb6 chassis to fit the laydown gearbox...
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Old 07-15-2016, 06:15 AM
  #13402  
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Originally Posted by Kraig View Post
This is what I came up with but feel free to add. These are my descriptions just to give you an idea as to what the part number is.

um732 chassis guards, side plate
um731 main chassis
um734 RF2L suspension mount, plastic
um736 RF2L suspension mount, plastic laydown motor plate spacer
um733 battery strap
um741 battery foam
um735 3 gear mid motor gear cover
um740 rear bulkhead
um734 3 gear mid motor plate spacer and transmission case
um739 laydown tranmission gear cover
um738 laydown motor plate
um736 laydown trasmission case
um728 sponge tape
um737 laydown idler gear
You'll also want the body (UMB05LW)
And the aluminum suspension mount is UMW705B and the Brass will be UMW725B


Originally Posted by jag5508 View Post
Does anyone know if the old bodies will fit the new chassis ?
Old body will "fit" but won't provide the coverage that the new body does.

Originally Posted by foampervert View Post
I just wonder if I can just drill new mounting holes in my current rb6 chassis to fit the laydown gearbox...
Yea you can drill holes, but you'll have to mill the chassis and other stuff to run the battery sideways, better to get the new chassis imo.

Originally Posted by Kraig View Post
$399.99.

One thing that they don't talk about but looking at the manual it appears you can run a 4 gear laydown transmission like Tanner is currently using.

Plus, with the 3 gear transmission the wing now mounts behind what I am calling the rear bulkhead. That should make it easier to get access to the inner ballstuds. I am curious if you could run a three gear laydown with the wing in that position, something tells me you can but I won't know for sure until someone confirms.
You can, you just have to use the standard rear bulkhead mount instead of the laydown bulkhead mount.
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Old 07-15-2016, 07:10 AM
  #13403  
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Default Battery placement...

Heh heh...

I use Super Shorties... I have absolutely no issues with battery placement.
I find that in a 5 minute race, the Super Shorties are quite sufficient. I dont experience a lack of punch until way past 5 mins. Also, Super Shorties charge and balance so much quicker. I love them!

Just need to figure out where the holes are.
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Old 07-15-2016, 09:21 AM
  #13404  
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Originally Posted by Jason.Dias View Post
You can, you just have to use the standard rear bulkhead mount instead of the laydown bulkhead mount.
Good to know

The LD bulkhead has 3 holes for the inner stud position as opposed to 2 holes on the std mid bulkhead... So I presume the 2 holes on the standard mid bulkhead are In the same position as 2 of the 3 on the LD bulkhead? As I couldn't decide if both bulkheads are the same width or not.

Any feed back on the differences felt between 3 and 4 gear lay down would be good
I'm assuming a little more weight transfer on and off power with the 4 gear so in theory a little more grip can be archived..?
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Old 07-15-2016, 09:37 AM
  #13405  
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Thank you for your input Jason.

Fyi, I did update the wiki with the additional part numbers provided by Jason and also updated the descriptions.
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Old 07-15-2016, 04:01 PM
  #13406  
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Originally Posted by foampervert View Post
Heh heh...

I use Super Shorties... I have absolutely no issues with battery placement.
I find that in a 5 minute race, the Super Shorties are quite sufficient. I dont experience a lack of punch until way past 5 mins. Also, Super Shorties charge and balance so much quicker. I love them!

Just need to figure out where the holes are.
I have been too, what kinds of looks does your racer get in the pits? I have been racing my SC6s with them lately and i use up 1100ish mAh with a 17.5 and about 1700 with a 7.5. 5 minutes is no problem for mod and the 17.5 has gone for 8.
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Old 07-15-2016, 06:28 PM
  #13407  
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Originally Posted by GIHOSU View Post
I have been too, what kinds of looks does your racer get in the pits? I have been racing my SC6s with them lately and i use up 1100ish mAh with a 17.5 and about 1700 with a 7.5. 5 minutes is no problem for mod and the 17.5 has gone for 8.
They always think Ima cheating, cos everything looks so nice and neat.


Actually, I always think I'm cheating too!

I do like a battery forward position on a regular/old/2012 rb6 in 4 gear mid motor... Car seems the best balanced... With a normal shorty, I'll still get quite a bit of on power push, out of corners.
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Old 07-15-2016, 07:14 PM
  #13408  
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Not a bad price for all that is included. I was guessing well over 400.
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Old 07-15-2016, 08:39 PM
  #13409  
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More like $439 I bet.
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Old 07-16-2016, 08:17 AM
  #13410  
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Well Kyosho America is going to sell it at $399.99 so...
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