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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 06-06-2013, 03:28 PM   #7126
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yeah, narrow should have you more forward bite. but wide will be more stable in the bumps. same thing as the sc10 with normal wheels and +3 offset wheels. I really liked the wide hangers on my rb6. I had no desire to tun rb5 parts on mine, plus it was so planted and so smooth that I never felt a need to change it. But then again, i dont rip it out of the corners, I roll in and roll out.
The narrow's are not going to give you more forward bite, they are going to decrease rear roll resistance in the corners, providing more rear traction throughout the corner. Any time the car is rolling, off throttle or on throttle, the narrows will provide slightly better rear traction. If the car isn't rolling at all, (i.e. taking off in a straight line), there will be no difference.
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Old 06-06-2013, 05:14 PM   #7127
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Nevermind him, he just feels obligated to post in every damn thread there is regardless of whether he owns the product or not.
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Old 06-06-2013, 05:18 PM   #7128
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...
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Last edited by Posvar; 06-06-2013 at 05:39 PM.
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Old 06-06-2013, 05:34 PM   #7129
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Wow. He has been a huge contributor to many threads and especially this one. Brandon knows his stuff....end of story.
Think he meant wildcat
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Old 06-06-2013, 05:37 PM   #7130
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Lol. I feel better now.
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Old 06-06-2013, 05:37 PM   #7131
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Nevermind him, he just feels obligated to post in every damn thread there is regardless of whether he owns the product or not.
your a winner. not sure who pee'd in your cheerios, but I will be up in phx in a couple weeks at w3, your more than welcome to further discuss your issues with me in person. cats eat gophers, just say'in

The way it was explained to me is that moving the wheels further in provides forward traction. Because more of the weight is directly over the wheels. Move the wheels out would then provide more side to side stability. And yes it would also affect roll centers.
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Old 06-06-2013, 05:56 PM   #7132
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bring out your RB6 and LETS DANCE
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Old 06-06-2013, 06:00 PM   #7133
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Well since I sold my rb6 because I knew I was getting laid off this week, that migjt be hard. But I will have a b4 or 22 that weekend
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Old 06-06-2013, 06:03 PM   #7134
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Bring em both
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Old 06-06-2013, 06:04 PM   #7135
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The way it was explained to me is that moving the wheels further in provides forward traction. Because more of the weight is directly over the wheels. Move the wheels out would then provide more side to side stability. And yes it would also affect roll centers.
You were misinformed. Narrow blocks = gain in side bite compared to wide blocks. Distance the wheels are from the chassis has no effect on weight over the wheel.

Think of a long plank sitting on top of 2 paint cans. Now stand on the plank. You can move the cans the same distance from the centre anywhere under the plank and your weight on each can remains the same.

Moving the wheels forward or back would change the weight distribution, not moving them in or out.
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Old 06-06-2013, 06:09 PM   #7136
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Bring em both
Bring some beer
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Old 06-06-2013, 06:37 PM   #7137
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You were misinformed. Narrow blocks = gain in side bite compared to wide blocks. Distance the wheels are from the chassis has no effect on weight over the wheel.

Think of a long plank sitting on top of 2 paint cans. Now stand on the plank. You can move the cans the same distance from the centre anywhere under the plank and your weight on each can remains the same.

Moving the wheels forward or back would change the weight distribution, not moving them in or out.
While I agree that longer camber links increases roll resistance , it seems like a narrower wheel base would cause more roll. Because the weight up high is the same but your narrowing the stance. If you put yohr feet together and have someone push you, yoj will mlve a lot more than iv you seperated you feet a bit. So I would think a narrow wheel base would cause more roll. And a wide wheel base would cause you to be flatter in the corner
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Old 06-06-2013, 06:49 PM   #7138
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Nevermind him, he just feels obligated to post in every damn thread there is regardless of whether he owns the product or not.
or if he has a clue what he's talking about
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Old 06-06-2013, 06:52 PM   #7139
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or if he has a clue what he's talking about
At least I try to be helful on line and at the track. Where as your just a keyboard hero with nothing to contribute. Its a sad life you lead sir
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Old 06-06-2013, 06:56 PM   #7140
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While I agree that longer camber links increases roll resistance ,
Nope, longer links lower your roll center, which decreases roll resistance (more roll)


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it seems like a narrower wheel base would cause more roll.
It does, as I explained what you will get when you run the narrow hangers.

Wider track = more roll resistance = less traction/bite when cornering
Narrow track = more roll = more traction/bite when cornering
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