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Old Mar 03, 2012, 05:23 AM
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Joined Nov 2010
548 Posts
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Skywalker FPV maiden flight maybe today

Hey,

I'm about to do my maiden possibly today. I'm charging my batteries, 4s 5000mAh and 3s 1300mAh

My skywalker seems to weight a lot, but at least enough to make it balance on the CG. It just feels scary because I've never owned a plane that heavy. I'm afraid that when I throw it in the air for launch that it'll fall like a rock.

Also regarding charging the 4s battery, it's 20C, how many amps can I safely charge it with? HobbyKing websites says 2amps but is that safe at all? What would make my lipo last longer? I'm currently charging it with 0.9A.

Anyhow, hopefully I can launch it for a flight today. I'm using the 980kv motor from BEVRC with 9x6E prop, seems strong enough to handle that weight, hopefully!
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Old Mar 03, 2012, 07:30 AM
NDw
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Ireland, Limerick, Kilmallock
Joined Aug 2010
2,123 Posts
Quote:
Originally Posted by raRaRa View Post
Hey,

I'm about to do my maiden possibly today. I'm charging my batteries, 4s 5000mAh and 3s 1300mAh

My skywalker seems to weight a lot, but at least enough to make it balance on the CG. It just feels scary because I've never owned a plane that heavy. I'm afraid that when I throw it in the air for launch that it'll fall like a rock.

Also regarding charging the 4s battery, it's 20C, how many amps can I safely charge it with? HobbyKing websites says 2amps but is that safe at all? What would make my lipo last longer? I'm currently charging it with 0.9A.

Anyhow, hopefully I can launch it for a flight today. I'm using the 980kv motor from BEVRC with 9x6E prop, seems strong enough to handle that weight, hopefully!
1c is considered to be a safe charge rate for lipos. C is the capacity in mah/1000.

So for 5000 mah 5 amps and for the 1300mah 1.3 amps. I usually charge at a bit less than 1 c. For 2200mah I charge at 1.5 amps, ect.

You could always start with a lighter battery until you get it trimmed out.
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Old Mar 03, 2012, 08:16 AM
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Canada, QC
Joined Apr 2010
1,331 Posts
NDw nailed it!

As for the weight / motor it should be fine. Here was my launch procedure :P hold SW with my left hand, radio in right hand, full throttle with my chin and launch at about 20 degree angle.
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Old Mar 03, 2012, 08:19 AM
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S. Wales
Joined Jun 2008
450 Posts
My maiden was a walk in the park just be ready to put a bit of down elevator in and you'll be fine.
Good luck.
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