About this Plan
Comet Sparky - Rubber powered cabin model. Comet kit no. R9. Jan sent us in this - Quote - Hi, thanks for this splendid collection! I have built this lovely Sparky from this plan. I found minor inaccuracy in the balsa cut scheme: the round tail wing parts E3 and E2 are of different size to fit the plan correctly. Kind regards! Jan.
Alternate (previous) version. Same plan, same scan, but with marginally less detail and the title block shows Comet #L10 instead of #3408.
Did I get something wrong with this plan?
That happens a lot. Help me make a correction
Hi Steve, I just spotted your Sparky plan. I that plan up 10% and built one RC a few years ago. Here's a couple of pictures [more pics 003, 004], plane flies great, had to add clay on the tail for balance.
Paul - 25/06/2014
Hi Steve, I built this Sparky from the Comet plans on your site [see more pics 005], second one I've built. First one was in 1959 as the first plane I ever built covered with tissue. It even flew after my less than expert construction. Back then I failed with the partly carved kit prop blank, but a second one whittled from apple crate wood worked fine. It eventually was destroyed after encounters with trees. This new one is covered with Doculam with Krylon trim, weighs 4-1/2 oz, with Eflite 200 motor, Berg RX, Castle ESC and 2 cell 250 lipo. I used a 7x3 GWS prop, APC won't fit. I added a spar on top of the flimsy wing to give a little more strength. Comet neglected to indicate CG, but the other Sparky plan on your site shows it at about 70%. I didn't believe this and first tried it at 50%, which turned out to be really nose heavy. Weight in the tail eventually brought it back to the suggested 70% where it flies well. I had to cut it open and move the servos back to get rid of the added weight. The motor is waaaay more power than needed and the elevator servo is seldom used. If I build another one, a smaller motor and rudder only will save some weight.
DougSmith - 01/03/2015
Pics of his completed model Sparky [see more pics 006-008] are thanks to MarcoAGuillermo.
SteveWMD - 04/06/2015
Notes and Warnings
* Credit field
The Credit field in the Outerzone database is designed to recognise
and credit the hard work done in scanning and digitally
cleaning these vintage and old timer model aircraft plans to get them into a usable format.
Currently, and confusingly, it is also used to credit
people simply for uploading the plan to a forum
on the internet. Which is not quite the same thing.
This will change soon. Probably.
This model plan (like all plans on Outerzone) is supposedly scaled correctly
and supposedly will print out nicely at the right size.
But that doesn't always happen. If you are about to start building
a model plane using this free plan, you are strongly advised to check
the scaling very, very carefully before cutting
any balsa wood.