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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
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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 07-18-2015, 01:36 PM   #12211
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Well I ran the car for the first time last night. Was thoroughly impressed. After I changed out the pistons for 2 hole 1.6's on all 4 corners the car was just as good as my B5M that I've been dialing in for a few months. Car seems to jump a lot better, as well as creates some more forward bite than I can get out of my 5M. Really happy with it so far and am looking forward to running it more
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Old 07-18-2015, 06:06 PM   #12212
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Kiddo got TQ and a win in novice and I got 3rd in mod buggy.
We run this car 10 times in a race night. Tonight we did 11. It get tortured. ZERO broken parts all day. Performed awesome. We did have a heat issue though. It was over 90 in there today and lots of motors getting hot. Mine did a thermal shutoff once and we had to improvise.


Ordering a fan tomorrow along with a bigger spur. What body will give me more clearance back there?? I have an idea to mount the fan in the front window and duct it across the SC and motor. I doubt I ever buy another SC that doesn't have heat sinks.

Oh I'm running 20/76. Motor is right against the trans.
Think that's too tall for a 8.5? It feels right on the track. It's wound out at the end of the straight.

SUPER STOKED about the podium btw!!
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Old 07-18-2015, 09:49 PM   #12213
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Who is the"cool guy" on Facebook who makes the three gear gear cover?
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Old 07-19-2015, 11:04 AM   #12214
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Just replied to your thread on my Facebook page
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Old 07-19-2015, 11:10 AM   #12215
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Anyone have a link to where I could get some red ball stud washers? I see concepts have stuff in blue
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Old 07-19-2015, 01:21 PM   #12216
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.

Last edited by glenng; 07-24-2015 at 06:41 PM.
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Old 07-19-2015, 01:38 PM   #12217
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Hello All,

Just finished building up my new 2015 RB6 in mid motor config. What a great car! All the parts are of excellent quality as you would hope with a kit of this caliber and price. It seems to come with all the best parts, although I was surprised to see plastic for the RF and RR pivots so I opted for the alum upgrades from Kyosho. Especially after reading about them here in this thread and the possible roll center options. Very trick. I had a similar setup on my DEX410.

Couple of quick questions for all of you. What are your favorite wheels for the car? and why? JConcepts Mono? AKA HExlite? Etc....

For those of you running shorty down the middle with electronics next to the servo, did you cut your battery strap or just use an aftermarket CF version? I'll post a pic in a bit.

Thanks in advance!
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Old 07-19-2015, 06:27 PM   #12218
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Quote:
Originally Posted by 13Maschine View Post
Hello All,

Just finished building up my new 2015 RB6 in mid motor config. What a great car! All the parts are of excellent quality as you would hope with a kit of this caliber and price. It seems to come with all the best parts, although I was surprised to see plastic for the RF and RR pivots so I opted for the alum upgrades from Kyosho. Especially after reading about them here in this thread and the possible roll center options. Very trick. I had a similar setup on my DEX410.

Couple of quick questions for all of you. What are your favorite wheels for the car? and why? JConcepts Mono? AKA HExlite? Etc....

For those of you running shorty down the middle with electronics next to the servo, did you cut your battery strap or just use an aftermarket CF version? I'll post a pic in a bit.

Thanks in advance!
I just cut my strap
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Old 07-20-2015, 09:12 AM   #12219
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Hey guys. Any advice would be appreciated:

What setup changes should I be looking at to yield more steering under acceleration? I have to be off power with 10% drag or braking to get the car to turn.

Front tires are AKA 3 rib and I can't get back on the power as soon as I'd like at corner exit, even lightly and smoothly on the power.

Track is outdoor low to medium traction dirt, running 17.5. Thx!
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Old 07-20-2015, 09:17 AM   #12220
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Quote:
Originally Posted by raz14 View Post
Hey guys. Any advice would be appreciated:

What setup changes should I be looking at to yield more steering under acceleration? I have to be off power with 10% drag or braking to get the car to turn.

Front tires are AKA 3 rib and I can't get back on the power as soon as I'd like at corner exit, even lightly and smoothly on the power.

Track is outdoor low to medium traction dirt, running 17.5. Thx!
What's your setup?
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Old 07-20-2015, 10:35 AM   #12221
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Quote:
Originally Posted by K_King View Post
What's your setup?
This is what I'm using only it's 17.5T, standard shorty battery, ESC behind, standard chassis.

http://www.petitrc.com/setup/kyosho/...RCTrack201407/
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Old 07-20-2015, 01:26 PM   #12222
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I've been asked about my Facebook page for the RB6/ZX-6 owners

Link below:

https://www.facebook.com/groups/492050687601155/
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Old 07-20-2015, 08:39 PM   #12223
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Quote:
Originally Posted by raz14 View Post
Hey guys. Any advice would be appreciated:

What setup changes should I be looking at to yield more steering under acceleration? I have to be off power with 10% drag or braking to get the car to turn.

Front tires are AKA 3 rib and I can't get back on the power as soon as I'd like at corner exit, even lightly and smoothly on the power.

Track is outdoor low to medium traction dirt, running 17.5. Thx!
Give the AKA EVO Pinstripes a try up front, I wasn't getting enough steering with 3 or 4 ribs, to me they felt lazy. That was the recommendation from my answer man. The ribs don't seem to react as fast as a tire with treads on a light buggy. They have been good for me with SS Impacts out back.

I have been tuning an already great 17.5 chassis and the results have made me very happy. We had a big 17.5 event at my home track the weekend before last and I was happy to see my RB6 weigh in at just 1513g. I knew it was light but that is pretty close to the 1499g limit, after a few races with her and some minor changes I ended up placing 5th after the double A-mains.

Cheers!
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Last edited by GIHOSU; 07-20-2015 at 09:40 PM.
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Old 07-20-2015, 11:02 PM   #12224
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Quote:
Originally Posted by GIHOSU View Post
Give the AKA EVO Pinstripes a try up front, I wasn't getting enough steering with 3 or 4 ribs, to me they felt lazy. That was the recommendation from my answer man. The ribs don't seem to react as fast as a tire with treads on a light buggy. They have been good for me with SS Impacts out back.

I have been tuning an already great 17.5 chassis and the results have made me very happy. We had a big 17.5 event at my home track the weekend before last and I was happy to see my RB6 weigh in at just 1513g. I knew it was light but that is pretty close to the 1499g limit, after a few races with her and some minor changes I ended up placing 5th after the double A-mains.

Cheers!
Cool. Thanks for the tips. Do you run the Pinstripes with the supplied red inserts?
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Old 07-21-2015, 02:33 AM   #12225
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you could also try moving your hubs back.. but youll give up some forwardbite
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