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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 02-19-2013, 09:34 PM   #5281
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Brandon, Is your set up on Pitite RC the most current?
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Nope... and probably never will be. My latest is on my website, and the
I take that back.... Arn0 from petit just made my link on petit a live link over to the PDF file I always change... so it looks like they will always have my latest setup sheet. Thanks Arn0!
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Old 02-20-2013, 12:04 AM   #5282
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Does anyone have a part number for the aluminum balls included in the kit that fit in the lower shock ends? Is anyone using those there or are you using plastic?
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Old 02-20-2013, 12:23 AM   #5283
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aluminum balls included in the kit that fit in the lower shock ends?
Wha? Plastic was included as far as i know.. they seem to fit loose but haven't worn much if at all.
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Old 02-20-2013, 12:50 AM   #5284
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Wha? Plastic was included as far as i know.. they seem to fit loose but haven't worn much if at all.
There were some goldish gunmetal balls that you can see some people using in the shock ends. I would just like to see who's using them and their opinions.
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Old 02-20-2013, 01:03 AM   #5285
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Also for Brandon or anyone running 3mms of bump steer what ball studs are you using?
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Old 02-20-2013, 04:18 AM   #5286
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I set my car up mid motor last night as well and gave it some laps I had to try it. Worked pretty well, had to stiffen the rear a bit and mess with ride height. Had to baby the throttle, but after te track was swept it had great grip. Nearly as much as my rear configuration. I feel like it might easily be as fast. So it comes down to personal preference on driving style for me. I have always driven rear motor so I will most likely go back. But it is maybe more fun to drive in mid but no faster yet.
I will have to race it tonight in mid as I don't have time to change back. Tonight will really be the test.
Look forward to your post on how the "real" test went.
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Old 02-20-2013, 06:09 AM   #5287
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[QUOTE=B00t13g;11838324]There were some goldish gunmetal balls that you can see some people using in the shock ends. I would just like to see who's using them and their opinions.[/QUOT
i used losi aluminum balls in my lower shock ends. plastic up top where it rubs the aluminum shock cap. I would like to find a nice set of delrin balls for the top though.
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Old 02-20-2013, 08:00 AM   #5288
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English365 and lbckevin, just an FYI there not gonna use grape soda this time, there supposedly gonna be using sugar water when the track is rebuilt

Thanks for the info, what all is this going to effect or change?

Never been there.
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Old 02-20-2013, 09:07 AM   #5289
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Also for Brandon or anyone running 3mms of bump steer what ball studs are you using?
Always lunsfords I have an assortment of lengths, so naturally they are longer than the stock ones. Couldn't tell you how long, but approx 3mm longer than stock
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Old 02-20-2013, 09:21 AM   #5290
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Perfect! Thanks!
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Old 02-20-2013, 09:28 AM   #5291
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Always lunsfords I have an assortment of lengths, so naturally they are longer than the stock ones. Couldn't tell you how long, but approx 3mm longer than stock
I used 10mm lunsfords, I believe that was the longest I could find in 4.8.
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Old 02-20-2013, 10:05 AM   #5292
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Thanks for the info, what all is this going to effect or change?

Never been there.
Not sure on the set up, the track will definetly have traction, but will have an affect on tires and wear, tires will probably be 1 runs. Were gonna be trying some different tires and see how they last. My son has been using Tebos setup from WCRC-Reedy, and is extremely happy with it, we've went to a few other tracks with it and has only change tires
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Old 02-20-2013, 10:14 AM   #5293
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Originally Posted by akiyama77 View Post
Not sure on the set up, the track will definetly have traction, but will have an affect on tires and wear, tires will probably be 1 runs. Were gonna be trying some different tires and see how they last. My son has been using Tebos setup from WCRC-Reedy, and is extremely happy with it, we've went to a few other tracks with it and has only change tires

Okay cool, was just making sure it wasn't going to affect anything major, tires will still be bar type, I've already ordered tires. But can buy tires there if needed...plan on either trying that setup or the SRS setup on Petit.

What tires do y'all typically run? Trying to get opinions!
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Old 02-20-2013, 10:52 AM   #5294
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Usually SRS is ran wet, so trying dry track is hard, but theres 2 indoor tracks here that we practice on, and Brandon favors the HB Beams or PL Suburbs. Theres only probably 2-3 locals that run K cars so were scarce right now
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Old 02-20-2013, 11:40 AM   #5295
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Well there will be two K cars coming from Texas for sure. I'm pumped! Still waiting on a few odds and ends, and tires to get here!
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