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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 10-14-2015, 03:22 AM   #12541
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Originally Posted by rocdog View Post
I am interested in seeing this? can you post pics?
heres a pic of the full car so u see i dont build junk and the best pic i could get with my phone o upload before work if you want freind me on fb and theres another pic. my names thomas epting on fb and im from new milford ct. good luck hope u like it
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Kyosho Ultima RB6 & RB6.6 Car Thread-17.5-full-buggy.jpg   Kyosho Ultima RB6 & RB6.6 Car Thread-shock-tower-mod.jpg  
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Old 10-14-2015, 09:02 AM   #12542
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Is this in reference to the new 2015 chassis? I have the older chassis and was told it was okay to mill down the sides of it and it will be ok. I'm thinking I want to do the same when I get the new car built but know I will need a stiffener at that point.
We found there was considerable flex on higher bite surfaces. This is why Thomas and Tanner wanted to create the brace.
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Old 10-14-2015, 10:19 AM   #12543
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I would like to see an official chassis for mounting the shorty sideways. I am too lazy/scared to grind mine down. lol
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Old 10-14-2015, 04:45 PM   #12544
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What degree aluminum rear hubs would work best on a carpet offroad track?
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Old 10-14-2015, 09:12 PM   #12545
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What degree aluminum rear hubs would work best on a carpet offroad track?
Most of the astro/carpet setups I have seen use the 0* hubs
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Old 10-15-2015, 03:35 AM   #12546
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I would like to see an official chassis for mounting the shorty sideways. I am too lazy/scared to grind mine down. lol

if you noticed at worlds the rear suspension pivot mounts where a different width this is because sideways battery needs different geometry to work its best. myself and many other kyosho entusiasts have found that the car is most happy with inline. it keeps the car agile and if you ask me it doesnt jump like a dead fish. thats my opinion anyway. just because it works on one manufacturers car doesnt mean its for every car. i know that tebo runs his car with the sideways pack but im sure he has made other changes to the rear and maybe even the front of the car to change his roll centers and such..anyway thats my opinion and thats how i like my buggy. not hacked up
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Old 10-15-2015, 06:20 AM   #12547
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So if I do the 3 gear mod u have to run the motor in reverse to get it to work properly and is it really gonna make a huge diff in mod buggy thanks in advance
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Old 10-15-2015, 07:33 AM   #12548
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No. When you run the 3 gear transmission, the motor is flipped and works in the regular rotation. The 3 gear transmission keeps the car flatter through the turns and is more responsive when jumping. It's a tuning aid, not a necessity.
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Old 10-15-2015, 10:22 AM   #12549
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No. When you run the 3 gear transmission, the motor is flipped and works in the regular rotation. The 3 gear transmission keeps the car flatter through the turns and is more responsive when jumping. It's a tuning aid, not a necessity.
There is a good conversion kit out as well. Remember you will also need a new gear cover as the kit one is the wrong orientation. A few people make them.
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Old 10-15-2015, 11:35 AM   #12550
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Got the email that my 3 gear kit and cover shipped today, looking forward to trying it. From what I have found with the B5 series is that the 4 gear is preferred for mod as the motor rotation helps with moving the rear end down for more traction. With that said I probably wont even try it in my mod car and wait to put it in the 17.5 car im building up
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Old 10-15-2015, 03:07 PM   #12551
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Originally Posted by eper View Post
if you noticed at worlds the rear suspension pivot mounts where a different width this is because sideways battery needs different geometry to work its best. myself and many other kyosho entusiasts have found that the car is most happy with inline. it keeps the car agile and if you ask me it doesnt jump like a dead fish. thats my opinion anyway. just because it works on one manufacturers car doesnt mean its for every car. i know that tebo runs his car with the sideways pack but im sure he has made other changes to the rear and maybe even the front of the car to change his roll centers and such..anyway thats my opinion and thats how i like my buggy. not hacked up
In the northeast, a large portion of people running the RB6 do so with a sideways battery. I have found the car a lot easier to rip on with the battery sideways. Sure, a few small changes are needed in order for the car to work at its full potential, but it isn't anything that's over the top. Again, each person is entitled to their opinion and what best suits their driving style.

As far as the rear hangars go, chances are they were a 1-off setup piece because of the unusual surface on which they were racing. Also, taking into consideration the fact Tebo wasn't even running a commercially available car, it's hard to make the claim that the suspension pivots were for the sideways battery vs the fact they were racing on a living room rug lol
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Old 10-18-2015, 07:47 AM   #12552
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Have any of you done much testing with the sideways square pack? I drove a B5M Friday and I loved the way it drove. I was 1 second faster than with my RB6. It just seemed I could push the B5M harder. It felt more planted. That's why I'm wondering about the sideways square pack. More weight down low.
I'm currently running the Zack Rogers setup and it's always edgy to me. Almost unpredictable at times. It could be my driving style just curious if any of you have dealt with this before.
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Old 10-18-2015, 04:57 PM   #12553
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I need to pick up an extra body to have painted; is there a reason to choose something over the stock body performance wise?
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Old 10-18-2015, 05:26 PM   #12554
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Anyone run the RT6? Hows the truck compared to losi or ae ?
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Old 10-18-2015, 05:45 PM   #12555
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I need to pick up an extra body to have painted; is there a reason to choose something over the stock body performance wise?
get the stock body lighter version..
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