PT-20 electric conversion...

Building an old PT-20 trainer with my son and decided to convert to electric power so we can fly at the local schoolyard and not annoy the
neighbors with the noise of glow power.
I've been doing some research and have come up with the following list of motor, ESC etc and was looking for opinions/comments from the more knowledgeable on my "solution":
AXI 2820/10 External Rotor Brushless Motor
Jeti Advance PLUS 40 Amp Brushless Controller with Program Card
45mm Spinner/Collet Shaft Adapter, 5mm
10x7 APC Prop
Radial Mount Set for AXI 2820 and 2826 Series Brushless Motors
(Also looking at this motor as it seem to have similar performance specs: PJS 3D 800E Outrunner Brushless Motor)
Thunder Power 3S2P 4200 mAh "Pro Lite" 11.1V LiPoly Pack
Thunder Power 2-5 Cell LiPo Balancer (Is this necessary? I've got a Triton charger)
Or one of the following
PQ "Twenty" 3 Cell 11.1V 3700 mAh LiPo Pack
PQ 3 Cell 11.1V 4000 mAh LiPo Pack
PQ 3 Cell 11.1V 4400 mAh LiPo Pack
PQPCM3S PCM GUARD for 3S LiPoly Packs (Again, necessary??)
I'm not sold on a particular brand so suggestions for other manufacturers would be appreciated.
Thx!!
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
check out www.flyhurricane.com
"The OTHER Kevin in San Diego" <skiddz "AT" adelphia "DOT" net> wrote in message

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
wrote:

Already did. I'm pretty green when it comes to this electric stuff so the numbers don't tell me a lot. Obviously you're more knowledgeable than I in that you've developed and brought to market those products. Perhaps suggestions of specific Hurricane products that would be good substitutes for the items I listed??? Like I said, I'm not married to any particular brand name.... What kind of warranty (if any) do you offer??
I'd still like to know if I'm on the right track with my choices. I'd hate to spend several hundred dollars and end up with an underpowered model. Conversely, I don't want to bolt on more than I need..
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Good point. Give me some data on the airplane also. Wingspan, wing area, flying weight, etc. I'll guide you through it. Jim
"The OTHER Kevin in San Diego" <skiddz "AT" adelphia "DOT" net> wrote in message

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Sun, 20 Nov 2005 19:33:55 -0700, Paul McIntosh wrote:

won't be wrong with that, 3s LIPO 4000 mah as suggested and 11x7 prop..
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Sun, 20 Nov 2005 19:33:55 -0700, "Paul McIntosh"

That's the motor I was looking at after doing some reading and taking some educated guesses at the model's built up weight. Just looking for some more info to reinforce what I found and maybe gain a little more knowledge.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Mon, 21 Nov 2005 07:50:53 -0800, The OTHER Kevin in San Diego <skiddz "AT" adelphia "DOT" net> wrote:

Your shopping list looks just fine. The 4 AH LiPo is more than enough, and that's good. Their lifetime is greatly extended by keeping the discharge rate below the vendor's rating, flight time is extended, and the weight difference isn't all that much. The charge guard OR balancer is a good safety measure, but you don't need both. Main difference is the charge guard only detects cell imbalance and shuts down the charge current when 4.2 V is exceeded by any cell, and you have to correct by charging the weaker cells one at a time, while the balancer automatically does this as needed. At this time TP has the proven track record on 3rd generation packs, while the PQ 20's are the new kid on the block, so I'd go with the TP, FWIW.
Abel
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Mon, 21 Nov 2005 08:16:09 -0800, Abel Pranger

I was leaning towards the TP packs as I have yet to read anything bad about 'em. I'd rather spend a few bucks more for a known quality than to skimp and replace more often.
Thx for the info.. Think I'll break out the Master Card and start ordering.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
I've had a PT Electric, original one, that I purchased, and half built
back in the 80's, still is intact as if I had purchased it recently The wing was built but not covered, but will do so soon, so I also hav also been looking at ways to mod this electric plane before taking it o its maiden flight. My research so far has not shown much in terms of u to date motor and battery options, but my experience with airplanes o this size tells me that the following equipment should also fly it wit plenty power.
Motor: BP 2915-5D Outrunner BL Motor (equiv to a a .30 Glow Eng) Prop: APC 9x7.5E or 10x7E ESC: 45 amp with BEC and LVCO Battery: 3000 - 4000mah 3scell pack 40C (2px3s as option)
Eventually I am going to mod the wing for ailerons and go with stearable front wheel, just makes for a nicer controlled model thi way.
I'd ike to hear of others that perhaps have modified this electri plane and we just don't know of. Any other options suggestion t equipment, brands, etc, is welcomed. I'm going to continue searchin and see if there is more on the convertion of this electric plane
-- Mario 200 ----------------------------------------------------------------------- Mario 2007's Profile: http://www.rcgroups.com/forums/member.php?u 679 View this thread: http://www.rcgroups.com/forums/showthread.php?tD191
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.