Guillow's BF-109 - RC Groups
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Sep 17, 2007, 09:12 PM
Registered User
Build Log

Guillow's BF-109

I just got this kit and so far it's been fun to build (first balsa and tissue model ) so far I've worked on it for about 1.5 hours got half and formers, and stringers laid, and glued down, so far this it not a bad kit for $8

Sorry about the razor and pins in the picture but there holding down a bend in the stringers
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Sep 19, 2007, 08:40 PM
Registered User
Here is my latest progress, working on the over half of the body
Sep 19, 2007, 08:59 PM
Common Sense Support Crew
It's looking good! Keep up the good work!

Sep 20, 2007, 10:03 PM
Registered User
Originally Posted by reblacklaf
It's looking good! Keep up the good work!

Thanks, I'm going to start with the wings/tail this weekend and hopefully fly it next week and rebuild it after the crash, lol
Sep 20, 2007, 10:41 PM
Registered User
You work quick!!! I love Guilliows.
Sep 20, 2007, 11:15 PM
Registered User
Looks good, I know what you mean about the rebuild but the fly part still has evaded me LOL!
Sep 21, 2007, 05:40 PM
Registered User
Thanks for the comments, today I layed out the stabilizer, and will be working on the rudder and wings soon
Sep 21, 2007, 07:03 PM
Registered User

This was the first balsa model I attempted to build back in 1966 (age 5). After consuming several tubes of Testors cement I managed to finish the model and I don't recall ever seeing it fly. A few years ago I decided to build the BF 109 kit again for nostalgia sake. I didn't modify the kit at all, just built it using the parts supplied (expect I covered the model in Japanese tissue). When it came time to fly, I found this model very tricky to trim. I managed to get a few 70 foot flights (straight line) after a bit of adjusting. It was still a fun project, but don't get your hopes up for any long, soaring flights unless you lighten the structure and change the prop and rubber.

Good Luck,

Sep 21, 2007, 11:43 PM
Common Sense Support Crew
Looking great! Just be aware that the blue band isn't a very good motor. Also if you trim the formers and keels you will have a better flier. Scalloping the space on the formers between the stringers will give a nicer covering job.

Last edited by reblacklaf; Sep 22, 2007 at 03:27 AM.
Sep 22, 2007, 11:57 AM
B for Bruce
BMatthews's Avatar
ESPECIALLY work on shaving out as much wood as you can in the tail. Even with the vac formed cowl and stuff up front these designs come out tail heavy and need serious noseweight if you don't go to extreme lengths to lighten everything aft of the CG location. I'd even suggest a lot of work with lightening holes or slots in the wing's trailing edge and ribs. Also to fly you'll want to add even more dihedral than the plans suggest. The wingtips should be roughly up even with the base of the canopy.

Best of luck with the remainder of your Guillows project. Hopefully the wood quality is better than the "Leaden Lumber" that mine all were when I was a kid. I built about 4 or 5 of these half shell models back then and none of them flew worth a darn. If it wasn't the massive amount of noseweight that just made them plummet it was the lack of dihedral that made them into spiral divers.

Mlbco, that's a nice version you have there.
Sep 22, 2007, 01:29 PM
Free Flight rubber flyer
jwfinn's Avatar
Bruce gives good advice on lightening the tail and increasing the dihedral. You also need to find a wastebasket for that blue rubber band. Go get some Tan II. It's got probably twice the energy capacity of that thing. Order direct from FAI ( or from Penn Valley ( If you order from Penn Valley, get a Peck 6" wide-blade prop while you're at it. And definitely get a Peck nylon thrust bearing. The PA006 one would be best.
Yea, here's where they've got that stuff:
You'd be wise to get a rubber winder as well, as that will allow you to stretch the motor out and wind it much faster. If you plan on building more of these, get a full pound of the rubber. The 32' lengths don't last that long.

Do that and you'll have a good chance of getting in some nice flights.

If you get the bug for this, try building a Chambermaid racer. It's probably the best flying scale design out there. Mine will do over 2 minutes reliably. A group of guys are building them on SFA:

Good flying,
Joshua Finn
Oct 01, 2007, 10:50 AM
Registered User
Its looking good, hope you put up some more pictures when its done.

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