Li Poly batteries, fantastic

Tell you what Paul, I'll sell you an entry to my house for a million bucks, but I know cos its you, I'll have to charge you another hundred for the ladder you will need to come in by the upstairs window.

Hell, will you guys go rent a cheap motel room and get this over with!

That's what I'm trying to do, let the experienced e-flyers discuss the merits of electric flight, and learn from them.

Lots of people on this Usenet do a very good job of helping others like me to understand the perplexing questions of batteries.

I have read the enjoyable times of most flyers with their hobby here, and there wre seldom any mean words.

pick fights.

It's too bad not all of us just simply accept what a good hobby we have and enjoy.

It's hard for some people to keep from getting mired in heated arguments.

You have summed up what this site is about, and poetically.

Thank you! Mike, Wan

From what I've been reading on E-Zone, 3 cell packs can easily get out of balance then cells need to be charged individually to get them equalized. Then there is real fire danger, charging takes an hour or more and you need a special charger. Three cells can fry a GWS 300C motor, two cells may not be high enough voltage for brushless motors. It gets expensive and complicated building and maintaining high amperage packs for large motors. For now, Li Polys are great for parkflyers and indoor models if handled properly.

Gary

That is only true if you really cane them. Otherwsie they stay pretty well balanced. If you must thrash big packs, check out suzannes pack balancer on the ezone. Its too heavy fort micro sized packs, but no great penalty for the big ones.

Its real, but its not common. More people lose fingers to glo props than get hurt, and so far the aorts that has happened is asomeone losing a car when they tossd a damaged pack in teh back,. COLKD have been a Nicad juts as easily.

Ive seen cars burn out from shorts in their OWN electrics.

A danger to be taken seriously, but no worse than any other. If you must charge the packs where youi can't see them,. make sure they are in something fireprrof. I wouldn't store glo fuel by an open fire in a plastic can either :-)

Wll charging NiMh takes an hour or more and you need a special charger. And you only get at best 5-10 minutes. Lipos might be esily 10 -20 minutes flight. I don't mind waiting an hour to recharge after three 7 minute flights.

nd LIPOS don;t need to be peaked up beforre flying. You can charge a bunch at home, during the week, and fly em flat at the weekend. By the time ou have flattend the last one the firts will be ready to fly again anyway...

Only if you don't pull the prop size down to get the currentin safe limist

That is all about propping and gearing the motors right for the packs. I am getting BETTER efficiency AND power by carefully adjusting gearing on cheap motors, by going up in voltage.

That I agree with. The big packs are exopenseive, need a bit mopre safety discipline, and a bit of looking after. Well if you havd forked out a few hundred dollars for a big 4 stroke, you would take accare of it too.

No, they are great for up to about 1/2 bhp (roughly .15-.25 equivalent). Beyond that it gets to >$100 for the packs, and they start to need special treatment if for no other reason than they are too expesnive to break!

No, they are great for up to about 1/2 bhp (roughly .15-.25 equivalent). Beyond that it gets to >$100 for the packs, and they start to need special treatment if for no other reason than they are too expesnive to break!

No, you were caned for saying that the entry fee was too high, somehow assuming that the only way to enter E-flight was at the 61 model size level.

And also fo refusing to understand that packs and models are not

indissolubly connected, any more than you have to buy a new can

of fuel fo each aeroplane you own.

Anyay, you are a yank, and as such corporal and capital punishment is something your legal system exonerates :-)

TNP,

Watch it there 'pond hopper'. --

Jim L.

FINALLY someone who understands what I was saying. Thank you!

Gary, I'd say my power train; Battery pack about $100, AXI brushless motor $97, ESC $107, comes to about $294. When I add the charger and power supply which may cost about $135 or less depending, bringing the total to about $430 or less for power. I have the equivalent power closer to that of a .30 to .40 and about the performance. Not the .15 to .25 of which you speak.

This does not include the cost of a plane which depends on which type. Still, considering that I won't be needing the paraphernalia of gas powered, don't you think that about $430 is not too expensive?

As for the batteries, they need care and have their hazards, but no more than the hazards of gas power which can also cause fires and explosions though rare. Any other opinions?

Wan