samstain
07-30-2006, 09:59 AM
Weather was pretty ordinary today, so went to work and made some more upgrades for my lepton.
I lengthened the Fail fin again - its now about 25mm longer than the stock and *just* misses the ground when the heli is sitting level, giving about 12mm of clearance to Eolo blades.
I also updated my battery mount thing, lengthened the front a bit to protect the battery more and also put a 'fence' at the rear of the battery so that the CofG stays spot on every time. The fence has deliberatally been made very weak, hopefully in a nose first crash it will pop out and allow the battery to slide back limiting/emiminating any damage to it.
http://www.helifreak.com/album_mod/upload/cdec87c1bec02a216ec7842a6baecca2.jpg
http://www.helifreak.com/album_mod/upload/301f299779b644d02274b913be1855d1.jpg
The new batteries in the photo seem very good to, they are supposed to be 20/40C, at 415g for 3200's (same weight as flightpower/PQ 3700's) they arn't light. However they do run a lot cooler and hold a noticably higher voltage. I get the feeling they are actally closer to 4000mAh capacity but they have only rated them at 3200 to make the C rating look better and increase thier lifecycle (assuming people limit thier discharge to 80% of 3200), at which point they are not being stressed at all.
I did a hard 5 mintue flight today, battery was cold and took about 2800 back in.
I lengthened the Fail fin again - its now about 25mm longer than the stock and *just* misses the ground when the heli is sitting level, giving about 12mm of clearance to Eolo blades.
I also updated my battery mount thing, lengthened the front a bit to protect the battery more and also put a 'fence' at the rear of the battery so that the CofG stays spot on every time. The fence has deliberatally been made very weak, hopefully in a nose first crash it will pop out and allow the battery to slide back limiting/emiminating any damage to it.
http://www.helifreak.com/album_mod/upload/cdec87c1bec02a216ec7842a6baecca2.jpg
http://www.helifreak.com/album_mod/upload/301f299779b644d02274b913be1855d1.jpg
The new batteries in the photo seem very good to, they are supposed to be 20/40C, at 415g for 3200's (same weight as flightpower/PQ 3700's) they arn't light. However they do run a lot cooler and hold a noticably higher voltage. I get the feeling they are actally closer to 4000mAh capacity but they have only rated them at 3200 to make the C rating look better and increase thier lifecycle (assuming people limit thier discharge to 80% of 3200), at which point they are not being stressed at all.
I did a hard 5 mintue flight today, battery was cold and took about 2800 back in.