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Old Apr 23, 2013, 05:03 PM
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Originally Posted by Vrated View Post
Yep! When the PT-19 came on the seen it was a hot item for along time for beginners. They flew better than the TD4 IMHO. I wonder how many of them were made? must of been in the millions LOL!
I think they probably could of sold more if they didn't advertise it as a 'trainer'...as a kid nobody wants a 'trainer'!!!!
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Old Apr 23, 2013, 06:43 PM
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I was wrong. After looking at pics here, I realize that it was the PT19 that had the 4 fragile "tits" near the wing root that easily broke leaving the wing worthless, not the TD4. After getting good enough that I could empty a Babe Bee fuel tank on my TD4 and a lay off for around 10 years, I bought a PT19, in '71 for $6 at Fed Mart. I never thought that it flew as fast or was as maneuverable as the TD4, even after I removed all dead weight, (pilots, windshields, stickers) and drilled a new hole in the bell crank to increase control surface movement. I never saw a wing or a fuselage break in any TD4-wings an fuselages broke easily on the PT19. I think they designed the PT19 to be prettier, sell more and increase after market sales of wings, fuselages, firewalls and other parts by selling a flimsier design. Flight characteristic differences between the two would be interesting, to a few. Comparing the weight difference might be as far as we get here.
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Old Apr 23, 2013, 06:55 PM
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I still have not flown the TD-4 (I need to remove the engine and go through it).

If time every permits, I will take it and the PT-19 out on the same day and try to make a comparison, on the same length of lines.

I have a lot of PT-19 time (years ago), and a bit from a few months ago.

I have never flown the TD-4.
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Old Apr 23, 2013, 06:58 PM
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I'd use the same line length, heads, propellers and good running Babe Bee on both birds. Could you weigh both birds and post here? Thanks.
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Old Apr 23, 2013, 07:13 PM
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Lol, I'm putting my money on the PT, the TD-4 wing was heavy...or it seemed heavy?

The PT-19 wing was a easy repair, where broken 'tit' or 'lug' was, drill a hole into wing with 1/16" bit, appx. 1/4", add a drop of CA, insert a short piece of music wire, done.
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Old Apr 24, 2013, 07:47 PM
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Originally Posted by aerohusker View Post
Lol, I'm putting my money on the PT, the TD-4 wing was heavy...or it seemed heavy?

The PT-19 wing was a easy repair, where broken 'tit' or 'lug' was, drill a hole into wing with 1/16" bit, appx. 1/4", add a drop of CA, insert a short piece of music wire, done.
Then you have the broken fire walls and fuselages to repair. I'll put my money on the TD4!
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Old Apr 26, 2013, 10:04 PM
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you may be right, the TD-4 may have been more durable, it would be interesting to see a report on the two.
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Old Apr 27, 2013, 01:09 AM
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Yes. At this point, weight difference is key in determining performance difference. It would be interesting to see an old article comparing the two.
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Old Apr 27, 2013, 09:21 AM
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If I remember right the TD-4 had a full flying horizontal stab. That was the only part I had to replace on mine. Some how I broke it. The local Hobby shop carried replacement parts for the TD-4, for a 11 year old I thought it was pretty cool.
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