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Old Dec 11, 2014, 08:51 PM
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United States, SC, Boiling Springs
Joined Apr 2014
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Speed Challenge

Me and a few friends have a speed challenge. We are going to build 4 identical Flite Test Racers, we all get to pick our own motor esc and prop. We cant go higher than a 4s battery.
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Old Dec 12, 2014, 02:26 AM
Defies Logic & Common Sense
speedactyl's Avatar
Philippines, NCR, Makati City
Joined Jun 2012
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So this is gonna be a test of engineering and materials since your gonna use similar airframes.
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Old Dec 12, 2014, 12:46 PM
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Moab, Utah, USA
Joined Apr 2003
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Do it like they do with the full size airplanes, install the biggest, baddest motor that will fit in the airframe. Then use the largest diameter prop that will fit with enough blades to max out the power of the motor.

Larry
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Old Dec 12, 2014, 01:14 PM
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That's the plan, lol
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Old Dec 12, 2014, 02:13 PM
Hot glue held together by foam
United States, WA, Vancouver
Joined Aug 2010
3,161 Posts
A powerful high kv motor with a high pitch prop will give you speed , but reducing drag and weight will also make a big difference . Make it as streamlined as you possibly can , and leave out unnecessary weight such as the swappable pod and rudder servo . You won't need the rudder for high speed flying .
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Last edited by balsa or carbon; Dec 12, 2014 at 02:36 PM.
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Old Dec 12, 2014, 09:31 PM
Defies Logic & Common Sense
speedactyl's Avatar
Philippines, NCR, Makati City
Joined Jun 2012
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Quote:
Originally Posted by Lnagel View Post
Do it like they do with the full size airplanes, install the biggest, baddest motor that will fit in the airframe. Then use the largest diameter prop that will fit with enough blades to max out the power of the motor.

Larry
Sounds like a GeeBee R2 small plane with Big engine and just enough wings to fly
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Old Dec 12, 2014, 09:45 PM
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Australia, QLD, Biloela
Joined Aug 2012
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What frame have you's decided upon?
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Old Dec 13, 2014, 08:18 AM
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United States, SC, Boiling Springs
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Were using the Flite Test Racer
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Old Dec 16, 2014, 09:49 PM
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Australia, QLD, Biloela
Joined Aug 2012
164 Posts
Luvly little frame. Ft racer/ slinger $36 for the kit. Is that the one?
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Old Dec 18, 2014, 07:30 AM
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Australia, QLD, Biloela
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Ordered the kit! ....
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Old Dec 22, 2014, 03:12 PM
Christian F
CaliPilot's Avatar
United States, CA, Redwood City
Joined Mar 2011
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Cover the airframe in packing tape. a lot less friction than paper and foam!!
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Old Dec 28, 2014, 05:18 PM
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Australia, QLD, Biloela
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I was planning to go with iron-on HK covering film(brushed crome)..
Well I'll do a test an see how it goes.
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Old Jan 06, 2015, 10:41 AM
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Australia, QLD, Biloela
Joined Aug 2012
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My FT Racer turned up unscathed! I thought for sure the shipping would kill foam sheeting.
I have a Turnigy 1450Kv 3536 with an 8x8 prop, Alloy spinner,50amp ESC, will see how she balances with a 3000 4s may have to be content with 2650 3s. Hmmmmm so many options
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Old Jan 21, 2015, 08:19 AM
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Australia, QLD, Biloela
Joined Aug 2012
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FT Racer complete -- motor/ESC tested today -- Over 1000W @ 73amps driving a 8x8!
Next--Maiden and into the paint shop. Then photo shoot...
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