Getting Stupid with the Tiny Trainer - The Challenge.

[buzzbomb]

Built a tapered Armin wing for my TT as a glider experiment. Flies quite nicely although I might remove the big curved wing tips which seem to make it want to roll even after trimming it in (they most likely aren't symmetrical). This is all a prototype for my 120% TT build I'm planning. Might add a larger vertical stabiliser as well.
View attachment 149569 View attachment 149573

That's beautiful! With a wing that long, you'd want the fuselage long enough to counteract. I'd get the wing tips as symmetrical as you can, and then extend the fuselage by six inches to the rear. Just stretch it out!

If you were then to straighten out the lines on the horizontal stabilizer, just enough to add some more stability? Wow! You may really be on to something, here!

 

[duckduckgoose]

That's beautiful! With a wing that long, you'd want the fuselage long enough to counteract. I'd get the wing tips as symmetrical as you can, and then extend the fuselage by six inches to the rear. Just stretch it out!

If you were then to straighten out the lines on the horizontal stabilizer, just enough to add some more stability? Wow! You may really be on to something, here!

Yeah I was thinking I may as well use the simple soarer fuselage which is nice and long. But yeah I think I can probably just glue some extra FB on the stabs and get better stability. Onto the 120% build. Thanks

 

[duckduckgoose]

Didn't get very stupid with it (though I am cooking up something stupid), but I just built a 120% Tiny Trainer with the sports wing, powered by a 2200mah 3s lipo, a sunnysky 2216 1250kv motor and a 8x6 prop. Just achieved a PB flight of 31 minutes keeping throttle at of below 50% which is probably not such a big deal for veteran TT pilots, but for me is mind bending, the best I had done was 21 minutes with the Spear. It was gliding probably 1/4 of the time, but WOW. I really like this plane. Already planning a longer wing with flaps

 

[mayan]

Didn't get very stupid with it (though I am cooking up something stupid), but I just built a 120% Tiny Trainer with the sports wing, powered by a 2200mah 3s lipo, a sunnysky 2216 1250kv motor and a 8x6 prop. Just achieved a PB flight of 31 minutes keeping throttle at of below 50% which is probably not such a big deal for veteran TT pilots, but for me is mind bending, the best I had done was 21 minutes with the Spear. It was gliding probably 1/4 of the time, but WOW. I really like this plane. Already planning a longer wing with flaps
View attachment 157142 View attachment 157143

Wow 31mins that’s amazing . Looks good buddy.

 

[Jimun]

Didn't get very stupid with it (though I am cooking up something stupid), but I just built a 120% Tiny Trainer with the sports wing, powered by a 2200mah 3s lipo, a sunnysky 2216 1250kv motor and a 8x6 prop. Just achieved a PB flight of 31 minutes keeping throttle at of below 50% which is probably not such a big deal for veteran TT pilots, but for me is mind bending, the best I had done was 21 minutes with the Spear. It was gliding probably 1/4 of the time, but WOW. I really like this plane. Already planning a longer wing with flaps

View attachment 157142 View attachment 157143

Awesome

 

[buzzbomb]

Didn't get very stupid with it (though I am cooking up something stupid), but I just built a 120% Tiny Trainer with the sports wing, powered by a 2200mah 3s lipo, a sunnysky 2216 1250kv motor and a 8x6 prop. Just achieved a PB flight of 31 minutes keeping throttle at of below 50% which is probably not such a big deal for veteran TT pilots, but for me is mind bending, the best I had done was 21 minutes with the Spear. It was gliding probably 1/4 of the time, but WOW. I really like this plane. Already planning a longer wing with flaps

View attachment 157142 View attachment 157143

Very nice! The TT is such a joy to fly. I imagine it's even better at 120%. I agree, 31 minutes is hugely impressive! I think the most I ever got was four or five minutes. Well done!

 

[duckduckgoose]

Very nice! The TT is such a joy to fly. I imagine it's even better at 120%. I agree, 31 minutes is hugely impressive! I think the most I ever got was four or five minutes. Well done!

Keeping the throttle down and gliding at every chance helps but yeah I love this plane. I have a 150% TT but I made the wing really thick (thicker than the simple cub wing) and it had way too much drag. I think I might build a new wing for it but keep it really thin.

 

[mayan]

Very nice! The TT is such a joy to fly. I imagine it's even better at 120%. I agree, 31 minutes is hugely impressive! I think the most I ever got was four or five minutes. Well done!

Stop flying full throttle all the time .

 

[duckduckgoose]

Stop flying full throttle all the time .

It's so tempting though haha!

 

[buzzbomb]

Stop flying full throttle all the time .

Your planes have a throttle??!! I swear, mine just have a switch!

 

[duckduckgoose]

Just flew it again this afternoon and let loose on the throttle a bit, punching it up super duper high, and gliding back down. It still managed a 20min flight, with one glide lasting 1:16. I think this is the Goldilocks size for upscaling this plane. I'm building a longer wing tonight to stretch The glides out even longer

 

[duckduckgoose]

Ok I promise I'll stop posting so much on this thread about non-stupid TT builds but I thought I'd post one last update. I built the extended wing (1445mm) with flaps and I just achieved a 41minute flight! This thing is beautiful to fly. With enough wind it happily sits still in the wind, and even rises on gusts. Landings are Smooth and it actually takes some persuading to touch down.
Unfortunately my camera battery was flat so I didn't get any footage, not that it's battery even lasts more than 20 minutes. Now to finish my TT seaplane...

 

[buzzbomb]

Ok I promise I'll stop posting so much on this thread about non-stupid TT builds but I thought I'd post one last update. I built the extended wing (1445mm) with flaps and I just achieved a 41minute flight! This thing is beautiful to fly. With enough wind it happily sits still in the wind, and even rises on gusts. Landings are Smooth and it actually takes some persuading to touch down.
Unfortunately my camera battery was flat so I didn't get any footage, not that it's battery even lasts more than 20 minutes. Now to finish my TT seaplane... View attachment 157522 View attachment 157521

Keep on posting! You've got it going on, and you're out there doing it and pushing the envelope. That's what this thread is about!

 

[duckduckgoose]

Keep on posting! You've got it going on, and you're out there doing it and pushing the envelope. That's what this thread is about!

Thanks, I'll have to experiment with bigger batteries/different props. Any suggestions? (Currently using 2200mah 3s with 8x6 prop and sunnysky 2216 1250kv motor.

 

[mayan]

Keep on posting! You've got it going on, and you're out there doing it and pushing the envelope. That's what this thread is about!

+1

Thanks, I'll have to experiment with bigger batteries/different props. Any suggestions? (Currently using 2200mah 3s with 8x6 prop and sunnysky 2216 1250kv motor.

Not really any tips of the top of my head but this data will surely help with my summer 200% TT build. Thanks!

 

[duckduckgoose]

+1


Not really any tips of the top of my head but this data will surely help with my summer 200% TT build. Thanks!

I was wondering if you'd gotten to that project yet! The biggest tip I have is keep the wing thin.

 

[mayan]

I was wondering if you'd gotten to that project yet! The biggest tip I have is keep the wing thin.

I actaully wanted to beef it up and make it a touch taller to make it have more lift . Why thinner?

 

[Crawford Bros. Aeroplanes]

I actaully wanted to beef it up and make it a touch taller to make it have more lift . Why thinner?

Reduced drag would be my guess. The thicker wing won't really have much benefit on a plane this size but the added induced drag will make the motor work harder and reduce flight time.

 

[mayan]

Reduced drag would be my guess. The thicker wing won't really have much benefit on a plane this size but the added induced drag will make the motor work harder and reduce flight time.

Makes sense

 

[duckduckgoose]

I actaully wanted to beef it up and make it a touch taller to make it have more lift . Why thinner?

Yeah drag is a killer. I made my 150% Wing with a 30mm thick wing thinking more lift but it was super slow and needed a LOT of power (2814 1000kv motor with 13 inch prop), sure it had lift while it was moving, but keeping it moving was the problem. Keeping it thin let's it keep its momentum, but you are always free to experiment. I'm going to build another much thinner wing for the 150% tt, and hopefully it will only need a smaller motor because I burnt out the 2814