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Old Oct 26, 2011, 06:17 PM
SlingWinger
San Bernardino, California, United States
Joined Oct 2004
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Pico Tiger Moth using Firefly motor?

I broke the gearbox on my Pico Tiger Moth by GWS. I have a Astro Firefly motor geared 4:1 with a Gunther 5x4 prop, that has never been used. I bought it at the AMA show maybe 8 years ago, put it away and forgot it. While looking for a replacement GWS gearbox I found the Firefly!

Just wondering if it has the thrust on 2 cells to pull the Tiger Moth around.

Thanks, Steve
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Old Oct 27, 2011, 01:08 AM
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Roger Lombard's Avatar
United Kingdom, England, North York
Joined Jan 2005
4,789 Posts
Quote:
Originally Posted by dayhead View Post
I broke the gearbox on my Pico Tiger Moth by GWS. I have a Astro Firefly motor geared 4:1 with a Gunther 5x4 prop, that has never been used. I bought it at the AMA show maybe 8 years ago, put it away and forgot it. While looking for a replacement GWS gearbox I found the Firefly!

Just wondering if it has the thrust on 2 cells to pull the Tiger Moth around.

Thanks, Steve
Steve,

This thread would suggest that the answer is no.

http://www.rcgroups.com/forums/showthread.php?t=18444

I've found that a little outrunner of around 19g with a current draw of maybe 6a gives great slowfly performance and duration.

Hope this helps.
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Old Oct 27, 2011, 12:58 PM
Registered User
Blacksburg, VA 24060 USA
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I also doubt very much that the Astro Firefly will handle a PTM. The Firefly is good for up to a 4-ounce airplane; the Tiger Moth is much heavier than that.

Jim R...
...who is much heavier than he used to be...
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Old Oct 27, 2011, 02:26 PM
Registered User
Livermore, CA
Joined Sep 2004
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I have tons of GWS IPS motor parts, if you want to fix your gearbox.
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Old Oct 28, 2011, 11:50 AM
SlingWinger
San Bernardino, California, United States
Joined Oct 2004
1,629 Posts
Thanks for the info guys. I'm building a simple "stick" type plane for the Firefly. I'll go brushless for the PTM, I'm sick and tired of gearboxes. Is there a specific BL motor recommended for "scale like" performance?
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Old Oct 28, 2011, 01:04 PM
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Roger Lombard's Avatar
United Kingdom, England, North York
Joined Jan 2005
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Something like this http://www.hobbyking.com/hobbyking/s...er_1700kv.html

or this

http://www.hobbyking.com/hobbyking/s...Outrunner.html

depending on how scale you want the performance.

Stick mount here

http://www.hobbyking.com/hobbyking/s...ount_20mm.html
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Old Oct 28, 2011, 01:32 PM
SlingWinger
San Bernardino, California, United States
Joined Oct 2004
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Thanks!
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