About this Plan
Firefly. Control line model, for motors under 1cc.
Quote: "Control line stunt model for 049 glow motors and under 1 cc diesels. Dioe-cut parts for quick building. 20 inch wingspan. 15/9."
Direct submission to Outerzone.
Did we get something wrong with these details about this plan (especially the datafile)?
That happens sometimes. You can help us fix it.
Add a correction
Do you have a photo you'd like to submit for this page? Then email email@example.com
User commentsOK. This is the model that started me off in the hobby and nearly turned me off it. Much birthday money spent on kit and a DC Bantam. A total dog - crashed, repaired, repaired. I never managed to fly the alleged trainer, until taught to fly a somewhat ropey Dominator combat wing with PAW 249 by best friend's brother. I still have the Bantam motor. Never used following the plane turning in when trying a wing over. I think we burned the model in the field with liberal squirt of glow fuel. Probably nearly 45 years ago!
AndyD - 31/12/2014
This was my first control line model which I *did* learn to fly on 50 years ago! It was powered by a DC Super Merlin wow! It would do wing overs. To anyone building this model I would say only fly it in calm conditions or you will be continually back tracking to keep line tension. I broke the fuselage a few times and I think I cured that problem by making a new fuselage from 1/8th ply. Those curvy wing tips are the very devil to cover – it might be better to infill with some bits of soft block.
BryanLea - 14/07/2015
Hi. I have attached photos of a pair of KK Fireflies which I built recently [more pics 003-007]. I had built two more from the same plans several years ago, using Norvel 1/2A engines for power. I found that they were way overpowered. For these two shown in the photos, I modified the plan to incorporate a radial mount for Cox Killer Bee 049 engines. These have proved to be ideal, with more than ample power on 35 feet lines. The wings are covered in 1.7 mil Doculam and heat shrunk before applying Japanese tissue and dope. I love the classic tissue look but find it too fragile. The composite provides for a significantly more robust covering with little weight penalty. The KK Firefly is an excellent little stunter. A classic design from Keil Kraft. Thanks very much for preserving and providing the plans for our use.
TonyLeong_Singapore - 24/11/2017
Built this as my first CL (big mistake!) it was heavy and (under powered) by a DC merlin nearly put me off C/L for good, spent hours trying to get the diesel to start............... But after some help from a club c/l flier I won!
Rich - 28/10/2020
Add a comment
* 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, 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.
© Outerzone, 2011-2020.
All content is free to download for personal use.
For non-personal use and/or publication: plans, photos, excerpts, links etc may be used, provided that full and clear credit is given to Outerzone with appropriate and specific direction to the original content i.e. a direct hyperlink back to the Outerzone source page.
Unauthorized use and/or duplication of this material without express and written permission from this site's owner is strictly prohibited. If we discover that content is being stolen, we will consider filing a formal DMCA notice.