|Dec 10, 2004, 03:13 PM|
Sig Riser 2m conversion to electric
I have a Sig Riser 2m that I bought about 10 years ago and I would like to build it as an electric glider. Has anyone done this conversion? I'm wondering what motor/prop/battery to try. I was thinking one of the smaller AXI brushless with a couple of Lipo's might work but I'm unsure as to which one.
Does this seem like a worthwhile project or is the Riser unsuited to the task?
Thanks for any suggestions and insight.
|Dec 10, 2004, 04:24 PM|
Build it - do it - don't be scared...What do you have to lose? I have done a conversion on a 99" glider - and it all worked well. The biggest problem I had was getting started... it always is for me. I'll spend months debating, designing, thinking and putting it off - until the day I get off my butt - and get the whole thing done in about an hour.
Thermal - do you have flying exp? Do you have electric exp? If not - read the FAQ at the bottom of this (and every other page) on the ezone. For 2m birds- I reccomend a 500/550/600 (all the same size) motor and a gearbox with 8 cells. A frugal yet worthy setup will run you about:
$30.00 motor (Kyosho ENDOPLASMA or ATOMIC FORCE) towerhobbies.com
$30.00 Inline Gearbox 3.33 or 3.8 to 1 (MPJet are good brand) aircraft_wold.com
$25.00 prop/hub aircraft-world.com
$45.00 8 cell FAUP battery.
The magic number is about 40 watts to a pound of plane (for gliders). Below 35 and you will struggle to gain altitude- the further you go above 40 - the more fun I have. I run about 60 to 70 watts per lb. on my planes.
There is a whole lot more to making a conversion - but until we know more about you and your plane, I can't be much more help.
|Dec 10, 2004, 05:04 PM|
Thanks for the reply. In answer to your questions;
I have been flying for 6 months, glow planes...a trainer (Alpha 40), a Hanger 9 Twist 40 and a 40 size pattern plane. I can fly all of these fairly well so I'd put myself as an apprentice intermediate flyer. I have flown a Slow Stick electric but that is all in the electric arena.
I really want to get into sailplanes but no one at the field I fly at is flying them so I'm pretty much on my own as to learning. I figured the electric route would be easier for me to begin with than trying to use a high start.
I'm like you in that I tend to take a long time to get started at something and then when I finally do it...I say "why didn't I do this earlier!"
Thanks for your help,
|Aug 20, 2014, 08:30 PM|
just finished my wing and getting excited about my first kit build and first sailplane. going to put a brush-less motor in the nose. recommendations on size of motor and folding prop specs? thanks a lot. walt
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