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Old 08-10-2005, 02:44 PM   #11
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have you done any comparision - cost - reliability - power to weight yadda yadda on the big electric setups?

this sounds to me to be as powerful as any 50cc gasoline engine
Craig 4850
MAAC #9467L IMAC 3706
Aeroworks 35% Yellow Extra 260, DL 100
JR 9503 2.4
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Old 08-10-2005, 03:17 PM   #12
I am: Boolean21
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Re: Gas/Glow/Electric

Originally Posted by craigk
have you done any comparision - cost - reliability - power to weight yadda yadda on the big electric setups?

this sounds to me to be as powerful as any 50cc gasoline engine
Yes to some extent....

Cost wise, its identical to our typical YS 160DZ setup provided you can get 200 cycles out of a pack......

Now, you may get 5 or you may get 500....this is still a huge ???? to us, we really dont know because until this year there were no batteries available that were not being abused in this application. The new packs can deliver more current than is required and still fit into our weight oldest pack now has 50 cycles (last years packs would not live this long) on it and is showing perfect (0.005V) balance so it should still have a fair bit left in it.

It will never be as cheap as gas, or as cheap as a 2-stroke of similar power.

Reliability.....again boils down to the end user....heat is a killer, keep the heat under control and it will last forever. If the motor gets hot and demag's the magnets its toast in about 2 seconds

I have had no motor or controller failures, but know others who have and its mainly just cooling. Keep them cool and they should last forever. Gearboxes (I use an outrunner) are another story altogether....I have heard they need greasing every 50-60 flights which is more work than any glow motor I have ever used!!!

Its not like glow where you can just throw on a prop and give it a need to check the current draw whenever you change something....and you should check the motor temperatures on every flight if possible, and especially if you change something. When you are pulling 60+ amps from the batteries you dont leave anything to chance as one mistake will destroy a lot of expensive gear!

That said once you get something that works its pretty much a no brainer!

Power - e-plane RTF is about 1 lb lighter than my glow plane RTF (wet) and produces about 5 lbs more static thrust.....I have never flown a model with this kind of power. Its more constant pull than glow, very little change in speed during the flight with throttle application....kinda like a big tractor just yanking around the front Also the huge prop does some strange things due to the gyroscope like effect it has.....the nose really does not want to go anywhere other than where it is pointed!

Hopefully the cost will come down to make this more attractive to the masses, but I somehow dont think its going to happen
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Old 08-10-2005, 04:00 PM   #13
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Got mine yesterday in Whitby.

Life ........ is good

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Lighten Up, Life is waaaaaayyyy too short
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Old 08-10-2005, 05:11 PM   #14
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It was a pleasure meeting you in Calgary, Chad!

I put a little something in the Electric forum. I hope you aren't shy...

Being a close follower of electric powered aircraft since the early 90's I really appreciate the improvements that have been made that have led to a power system such as the one in Chad's Enigma.

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Old 08-10-2005, 11:27 PM   #15
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Originally Posted by Propworn
I know Keith has tried to support the Nats this year but it would have been nice to receive the magazine by the first of the month to see what was going on. I know, go to the MAAC web site but what of those who do not have internet access and rely on the Magazine for the latest information and updates. Kind of disappointing when it arrives after the fact.
Hi Dennis,

As has been said, there are many MANY factors to getting the magazine delivered ... and I don't have control of a lot of them. Also, as has been mentioned, this week is just about the worst week you can pick in the cycle to promote an event in the magazine. When the dates were first announced I mentioned to the board and the organisers that 2-3 weeks later or a month earlier would be better from promotion and 'building' excitement in the magazine.

Beyond that, I asked all committee chairs and directors to submit ther reports early, and got the majority or reports in within days of the deadline. The content I didn't get before their extended deadline, was the Nats Content. In fact, I didn't receive any indication of a lack of Nats content until 2 days before I was goning to press and no indication of the cancellation of nats events until the day originally I wanted to go to press.

If everyone HAD met their deadlines and provided the expected material, it would have still been tight to get the magazine out before the nats, because of the timing of the event ... but That's life.
Hopefully we'll see timely event reports and photos so we can have some great Nats coverage in the October issue.
Keith Morison
MAAC 24909L
Morison Communications - Publishers of Model Aviation Canada
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