Upgraded tail feathers on Model III to Model IV 1200

[LSaupe]

Hi All:

I would like to upgrade the tail feathers on my Model III to Model IV-1200 with electric trim.

Anyone have with experience with this change? I "assume" the elevator would be a direct bolt on?

Rudder would need to relocate connecting bushings and overall height of the vertical stab to match?

Larry S.

[SkySteve]

Larry,
Sent you a PM

[Marsh33]

Hi all,

(Restarting an old thread here) How did this work out? Is it possible to put the model 4 parts with trim on the model 3?

Cheers, Marsh

[LSaupe]

Worked great. You need to modify the attach points for the Model 4 rudder and increase the height of the vertical stab. Instead of purchasing a new elevator, I increased my cord by 3" and added an electric trim tab kit from Lowell Fitt.

[Marsh33]

Thanks! I don't suppose you have some photos?

[LSaupe]

Yep, have a bunch. PM with some contact info and I will get them to you.

[LSaupe]

Some here:

https://teamkitfox.com/Forums/album.php?albumid=415

Some here:

https://teamkitfox.com/Forums/album.php?albumid=450

[Mark Mills]

I'm jumping in here with more questions😀.
What is the chord of your trim tab?
More info on the Lowell Fritt kit. A quick search did not turn up any useful information.
Any comments on functionality of the trim tab? Do you like the way it works, is controlled, resolution??

Thanks. I'm working on an unfinished IV kit and think I want to add the electric trim.

[avidflyer]

I'm rebuilding a Kitfox 4, and added a trim tab to it. Here are some pictures of what I did. JImChuk

[LSaupe]

I'm jumping in here with more questions😀.
What is the chord of your trim tab...


Hi Mark:

Unfortunately I do not have any of those details anymore. Not sure Lowell still offers the kit, but you could always contact him (he is on this site). It did work fabulously though. Bird was sold a while back so no longer can obtain info.

[HighWing]

I've been reading and thought I should drop a note. I never throw anything away which proves the challenge of finding anything. I will check to see what tooling is available and will report if I can be of help with trim tab parts. For those that might be interested, the kit will require some welding and trimming to fit, of the parts sent. More later.

[HighWing]

I found the tooling. Back in the day we offered two options and I will go with that today as well. Parts only, minus parts available through Aircraft Spruce. I provide - Servo cover, servo attachment tabs and formed trim tab. With these parts, it will require trimming of the steel parts and trim tab, welding of the modifications to the horizontal stabilizer and assembly. Or I can do the complete modification which would require shipping the elevator here and return. I am attaching a PDF of the installation instructions for your perusal. 21563

Send a private message for more information.