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Old Jan 31, 2009, 07:14 PM
LCS
Registered User
New York
Joined Jan 2003
86 Posts
Discussion
Electric Q-500 pylon racer

Hi Guys,
Although I have been pylon racing for quite a while, I am fairly new to electrics. I am looking to convert a Q-500 to electric and want to know your thoughts on my selection for power and such


Motor : EFlite 25 Outrunner
Speed control : 60A Castle Pheonix with BEC
Batteries : 5S Li-ion 2300 A123
Prop APC 9X9e
Plane V-Tail Pacemaker
Flying wieght : 3lbs 8 oz

I would like to know your thoughts on speed and can we get a 3 minute , full throttle run without loss of performance. This is all ground work for NEPRO as we may in the future have a spec class electric Q-500 racing.

Thanks
Lewis

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Last edited by LCS; Feb 02, 2009 at 05:53 AM.
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Old Jan 31, 2009, 07:24 PM
Current project: Electrolyte
pdawg's Avatar
United States, CA, Torrance
Joined Apr 2004
5,365 Posts
The spec class is a great idea Lewis! I think you would get much better high speed performance however if you were to look at some of the Scorpion motors instead. Keep us posted!
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Old Jan 31, 2009, 07:41 PM
LCS
Registered User
New York
Joined Jan 2003
86 Posts
Electric Q-500 pylon

Hello,
To be honest this is just starting out. We are looking to match the speeds of the current 424 glow powered q-500 models which are in the 110-115 range and use off the shelf items that are easy to come by.

Where are the Scorpion motors available?

Thanks
Lewis
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Old Jan 31, 2009, 07:49 PM
Registered User
glucoseboy's Avatar
SF Bay Area, CA
Joined Feb 2006
857 Posts
Quote:
Originally Posted by LCS
Hello,
To be honest this is just starting out. We are looking to match the speeds of the current 424 glow powered q-500 models which are in the 110-115 range and use off the shelf items that are easy to come by.

Where are the Scorpion motors available?

Thanks
Lewis
http://www.innov8tivedesigns.com/ind...ff7bf2c5324ba0

Here is nice chart comparing scorpion motors with others
http://innov8tivedesigns.com/Scorpio...ison%20Web.htm

You'll get more bang for the buck.
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Old Jan 31, 2009, 09:58 PM
hondaboy92hatch
hondaboy92hatch's Avatar
United States, WA, Vancouver
Joined Feb 2005
706 Posts
LCS I sent you a pm and check my Thread on the Viper 500.

Joe
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Old Feb 01, 2009, 06:10 PM
Chillaxin dude!
BulletMaster's Avatar
Newcastle, NSW, Australia
Joined Apr 2003
4,768 Posts
lol... another one in the making
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Old Mar 19, 2009, 07:30 AM
Chillaxin dude!
BulletMaster's Avatar
Newcastle, NSW, Australia
Joined Apr 2003
4,768 Posts
progress on this one?
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Old Mar 21, 2009, 10:01 AM
Registered User
Muncie, Indiana
Joined Jan 2009
332 Posts
EP Q-500 Predator II

I am glad to see someone doing a Q-500 conversion. I have converted a Predator 500 using a Turnigy SK Aerdrive XP 35-42-1100 on 4S 20C 2350's turning an APC "E" 9 x 6. I have attached a video of the first flight.

Electric Predator 500 Pylon Racer (1 min 44 sec)


I have since tested it with a 35-48-1100 and have it over 105 mph. I have ordered a 9 x 7.5 & 9 x 9 APC "E" to get more speed. The total system cost is under $100 dollars. The goal was to replicate the speed of a TTpro 40 which is the choice for AMA 424 racing. The weight RTF is 3.75 lbs which is the minimum weight for a Q-500. The target speed is 118 mph.

Enjoy,

Archie Adamisin
Muncie, Indiana
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Old Mar 21, 2009, 12:05 PM
Pylon freak
Paulus's Avatar
Rijnsburg,the Netherlands
Joined Jun 2000
376 Posts
Last year I've flown my electric viper between the Irvine Q40 and OS 40 FX powered models during competitions.

The goal was to match the speed of the IC powered models and with my setup this was very close:

Hyperion Z4020-08
80 Amp ESC
5S 3700 Flightpower
9x8 APC prop.
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Old Mar 21, 2009, 02:35 PM
dappopao
Joined Dec 2006
17 Posts
Quote:
Originally Posted by Paulus
Last year I've flown my electric viper between the Irvine Q40 and OS 40 FX powered models during competitions.

The goal was to match the speed of the IC powered models and with my setup this was very close:

Hyperion Z4020-08
80 Amp ESC
5S 3700 Flightpower
9x8 APC prop.

http://www.baronerosso.net/forum/aer...ml#post1417737
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Old Mar 21, 2009, 03:43 PM
Crashing into the sky!
jackosmeister's Avatar
Auckland NZ
Joined Aug 2007
6,976 Posts
Damn that is one nice strip you have Archie, jealous as.
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Old Mar 21, 2009, 07:29 PM
Registered User
Muncie, Indiana
Joined Jan 2009
332 Posts
Paulus,

Great conversion. There is a bunch of power available in that system you have. What kind of speeds were you seeing with it?

My target was to develop an EP conversion that would be around 120 MPH. That is the speed of our sport class 424 Q-500 which use the TT40 Pro. The new 35-48-1100 Turnigy motor pushed the speed to where I wanted it. The video was taken with the shorter 35-42-1000. I was glad that the conversion worked out. Now the next step is to see if we can get people to race it.

Jackosmeister,

That video was taken at the AMA National Site here in Muncie. I live about 3 miles from there. I wish it were my flying site. It is huge!!


Take care,

Archie Adamisin
Muncie, Indiana
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Old Mar 21, 2009, 09:26 PM
Chillaxin dude!
BulletMaster's Avatar
Newcastle, NSW, Australia
Joined Apr 2003
4,768 Posts
hey guys... great to see so many of these being done...

thanks for the vid.... good to watch.

Just out of interest, what is the reaction of the IC racers to the E-versions?

Further, I am jealous of the light weight you guys are getting for yours... my Viper is 4.4 pounds!!
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Old Mar 22, 2009, 07:28 AM
Registered User
Muncie, Indiana
Joined Jan 2009
332 Posts
Not really sure what the response will be from IC fliers. We are trying to generate some interest in electric racing in the states because right now all we have is F5D and that happens very rarely. I know there is some electric racing in Caliornia and abroad.

The goal here was to take a commonly used airframe and convert it using off the shelf parts and make it as fast as a glow model for virtually the same cost.

The weight was a concern, but the 4S 2350 pack used weighs 8.5 oz, the Motor weighs 5.5 oz, and the ESC weighs 1.5 ozs. A TT pro 40 weighs 17 ozs. The weight ends up being a wash.

I have had some feedback from the SEMPRA group on setting some guidelines for EP Q-500. My next goal is to race against my brother flying a TT40 powered 424 Q-500 and see who wins. We will video this of course. No matter win or lose, if I can stay with him for (10) laps, the conversion will be a success.

I also know that the NMPRA is looking to get an electric class started. Maybe this would be a way to get that done for very little expense.

Take Care,

Archie Adamisin
Muncie, Indiana
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Old Mar 22, 2009, 01:38 PM
Registered User
Joined Dec 2007
14 Posts
You`re not the onlyone flying a electric Q500.
I fly a Grand Chelem quikie, powered bij a turnigy 50-45, 100A esc. and 5cell`s 5000mah lipo. Today i made the first good flight, and it`s fast, FAST!!

Any questions? (mdejager9@hotmail.com)

Mike
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