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Electric RC Helis Discuss helicopters, setups and power systems for electric helicopters. |
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03-02-2016, 05:57 PM | #1 |
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JR Voyager E NiCAD to Lipo help
Hi
A Long time ago I bought a JR Voyageur but have not flown it yet it is assembled and stock but my NiCad batteries appear to be dead. It was designed for a 8.4v 2000 mah pack. If I wanted to run a Lipo in it other then a risk to the ESC and motor would a 3S 2250 pack work? or should I try to find a 2S pack Any advice would be great Thanks C |
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03-02-2016, 06:39 PM | #2 |
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Re: JR Voyager E NiCAD to Lipo help
My quick search shows that your heli is probably using a NEA-300H speed controller with a 540 brushed motor. I doubt either of them would be happy with the 12.6 volts from a fully charged 3S lipo.
I don't have any experience with the Voyager, but I'd be looking at 2S lipos. |
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03-02-2016, 07:49 PM | #3 |
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Re: JR Voyager E NiCAD to Lipo help
Chuck, if that one plugs into the receiver as with a normal ESC let me know. Same with the dimensions, (and specs if you have them) on the motor. May have something more modern to update it and allow you to run 3S LiPo.
Along with that ability, brushless will give you a lot better efficiency and power.
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03-03-2016, 08:33 AM | #4 |
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Re: JR Voyager E NiCAD to Lipo help
Gary
I can take the motor out and measure it, its a 12 turn 540 size motoer the ESC is like a modern one where it plugs into the receiver and the motor. the only different thing is they included an on and off switch which is actually a nice feature adds a bit of weight but nice to have. |
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03-03-2016, 09:19 AM | #5 |
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Re: JR Voyager E NiCAD to Lipo help
hi. i have had a jr voyager for a long time it was my first helicopter. i upgraded it to brushless with an astro motor and an e-flight speed controller.the original motor and speed controller nicad combo was under powered with short flight times and heavy.also my helicopter was unbalanced with the nicad in position under the frame. it was very tail heavy. i had to extend the battery forward beyond the rear plastic retainer clip. i looked the internet over and over, but never seen anyone else having this balance issue. i don't know if the astro motor would be available any more but it was a great improvement. also jr did an upgrade of the voyager called the super voyager i don't think it was available in north america but hobby king had a clone of it which i bought. the upgrade was a new main frame eliminating the intermediate gear running a brushless motor directly onto the main shaft. also repositioning the battery forward like most helicopters are now. i do like the voyager. it suits my flying as I'm not very advanced and it is gentle
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03-03-2016, 09:29 AM | #6 |
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Re: JR Voyager E NiCAD to Lipo help
also in still have the original motor and speed control. i thought about trying them on lipo as well but never did it. if you want you could have them just send your address. they don't have a lot of time on them and you could test a battery on them saving your new one. josh.
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03-03-2016, 11:10 AM | #7 |
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Re: JR Voyager E NiCAD to Lipo help
Josh, any info on the ID of the ASTRO motor? Even Kv and drive pinion count would help.
I tried to find some info and nothing to match the stock brushed to brushless conversion. ESC was listed by posters as anything from 40-60A. That's quite a range and overdoing it would add more weight.
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03-03-2016, 12:56 PM | #8 |
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Re: JR Voyager E NiCAD to Lipo help
Josh PM sent with my address, thanks I appreciate it this will give me a chance to do some tests and see what things can handle.
Cougar I did some searches also and the conversions to brushless vary but most people were happy with their chosen setup. I really like the looks of it and its been sitting around here for too long its time to fly it this summer. Thanks for all the help so far. |
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03-03-2016, 01:29 PM | #9 |
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Re: JR Voyager E NiCAD to Lipo help
hi.this is from the astro box
astro flight inc.#803 hv designed for voyager helicopters runs on 7 or 8 nicad runs on 3 lithium polymer cells astro 020 brushless system for voyager helicopters winding 3 turns length 48mm, dia 25mm, shaft 1/8 inch,kv4400rpm/v , 150 to 300watts, 35amp rating sensorless control 9 to 12 volts josh |
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03-06-2016, 08:55 AM | #10 |
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Re: JR Voyager E NiCAD to Lipo help
A simple voltage reducer is a silicon diode. For each diode you put in series with the battery the voltage is reduced by .7V. Large diodes are not expensive. I have some 300Amp ones I got from Princess Auto many years ago. Germanium diodes drop the voltage .3V. I wire two nicad batteries in series and a diode, the resulting voltage is 1.7V, makes a good hot shot winter glow plug exciter.
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