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LMH Helicopter Discussion of all LMH helicopters both electric and glow.

Corona ?

Old 04-10-2005, 08:47 AM
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Default Corona ?

Hi - I am new to Heli's and am just mastering a Hirobo XRB. Great indoor model but of course, looking for my first outdoor model.

I have heard that Corona's are a good brand and would make a great 2nd heli for me to step up to.

Is this true? what model? brushless (I want to stick to electrics). Can it perform well outdoors?

Where to buy a complete kit?

Eventually, can it handle a small payload, i.e. cam?

Thanks for advice in advance, once bitten by the heli "bug", there is no going back!
Old 04-10-2005, 09:17 AM
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Default RE: Corona ?

LMH corona( LMH120 corona is actually the model name of their electric heli) is an excellent FP electric that can handle a bit of payload. mega 16/15/3, 16/20/2, hacker C40T12 or 14 or any similiar motor have been used to good result... 35amp or larger ESC.
Old 04-10-2005, 04:17 PM
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Default RE: Corona ?

I started with the XRB and rotofly. I made the corona120 my next after a lot of research. It is built bulletproof. I went with an astro/phoenix motor/ESC. My ESC started getting hot while I was setting up the servos. I had to send it back and still waiting. I can't wait to get it in the air.
Donnie
Old 04-11-2005, 09:19 AM
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Default RE: Corona ?

What ESC did you have on it?
Old 04-11-2005, 03:11 PM
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Default RE: Corona ?

I also chose a Corona as my second heli after my Hirobo XRB SR. I have not been disappointed. If you're into bling, you'll probably want to check out Matt Shumaker's Corona mods site...

http://www.ballistictechnology.com/

NOTE: Matt's site is currently down while he catches up on orders for his various mods and upgrades for the Corona (including my order for a variety of mods and upgrades that are so hard to wait for[&o])... Matt's stuff is really, really cool.
Old 04-11-2005, 04:32 PM
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Default RE: Corona ?

I have (had) the phoenix-45 ESC and a astro 020 brushless motor. I don't know if I would recomend it. It worked fine when I first got it and tested all the servo's, motor and gyro on the work bench. When I was setting up the servo's on the heli I smelled something . It was the plastic wrap. It got so hot it melted it. I didn't even have the motor plugged in. Just the servo's and gyro. The BEC was still working but the motor wouldn't turn after that. They are (they say) shipping me a new one. I'll let you know. I am using a lipo 4160ma 3S2P for power. If the magizine article I modeled it after is right I should get 31 minuets hover time. We'll see.
Donnie
Old 04-11-2005, 04:37 PM
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Default RE: Corona ?

askman.
What do those numbers stand for. Can you explane in detail.
Thanks
Donnie
Old 04-11-2005, 09:32 PM
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Default RE: Corona ?

mega motor are rated in three separate numbers. 16/15/3 is common motor being used in corona. it ha 16mm diameter by 15mm long stator with 3 wire wind. 22/20/3 is 22x20 stator with 3 wire wind, etc. hackeras use different nomenclature. they use b or c (c stand for cooling or heatsink version ) 20/40/50 stand for size and L or S is short or long can, and last number is wind..
Old 04-13-2005, 08:20 PM
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Default RE: Corona ?

Thanks askman
I am still kind of confused on how the manufactures rate the power and rpm of the motors. I am an electrician and I am used to voltage, rpm, hp,torque,poles,FRM, etc. I can't make since out of those numbers. My astro is rated in watts. I do understand that. 020=300w.
Donnie
Old 04-13-2005, 09:00 PM
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Default RE: Corona ?

most motor have current rating, but it is not obvious from their name. mostly, brushless motors are rated by their size.

for brushless.
280 size (about 50gm. hacker 20, mega 16/7, himaxx 2025, etc) these are 150-200 watt motor
400 class ( under 100gm. mega 16/15, etc. 200-250watt class)
480 class (100-150gm hacker c40S, mega 16/25, multiplex. 250-300watt)
500 class (150-200 typically under 400 watt)
600 class (2-300gm typically 4-800 watt)
Old 04-13-2005, 10:13 PM
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Default RE: Corona ?

Thanks askman, I put about the same post on the elect heli forum. I think its just another learning curve for heli's. Thankyou for the help. It seems no other life experience can relate to this hobby. Not airplanes for sure.
Donnie
Old 06-05-2005, 10:33 PM
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Default RE: Corona ?

Im selling my 2 coronas. One has the belt drive kit from http://www.ballistictechnology.com/
Its the crazy-E-tail. Best mod for a corona.

pics here....
http://www.rcgroups.com/forums/showthread.php?t=379298

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