mini talon (new build)

[hellsbells1]

cheers ian havent had chance to madian it yet but i feel ive done a better job this time round regarding control surfaces and the rest of it! just waiting for the right conditions.!! so thanks

[hellsbells1]

well just to give you guys some info on the madian!. Well first launch it just belly landed , but luckly no damage. so dialed in some up elevator for the second attempt managed to get it up in the air but had a right game trying to get this plane to fly straight and level . Even with the c g at recommended spot 55mm im still having to put alot of up trim to get it to fly level ,  how people are managing to fly this plane without any trim is beyond me to be honest?
maybe move the c g back abit but the last time i did that it destroyed the plane. anyway after some trimming tried stb mode and it works but keeps loseing altitude at around half throttle, so landed and gave up in the end. try again soon maybe. but any suggestions im all ears

                                                               kind regards (hellsbells1)

[SnoozeDoggyDog]

What FC do you have in it?

Don't measure your CG. I had all sorts of problems with my CG until I met up with someone local and he advised I try the CG on the aileron servo wire .... it's been plain sailing since. I wrote of 2 talons until I had my CG on the servo wire. Give the talon 100% throttle when you throw it, I suspect your belly flop was due to low throttle or no angle of attack.

Once up in the air I trim for level fight at about 55-60kph. I don't think the talon will ever fly level at all speeds. Find your sweet cruising spot and trim for level fight. It you up your speed you will find you have to trim for pitch down But I am flying with a 4s 8000mah. But the CG will stay the same no matter what you load up with.

It isn't the easiest place to chuck. It was my first proper plane (I'm discounting that I ever actually "flew" my axn). It was a very steep learning curve with the train. GG is everything!

P

[hellsbells1]

Hi thanks for reply fc is mfd ap . On my previous mt l tried cg on servo wire and it was really bad so moved it back to 55mm, l  think l need to put more up trim in elevator on the next test? But thanks for advice but placing cg on the wire wasnt working for me at all. Cheers trevor

[SnoozeDoggyDog]

What's the wing chord?  And is 55mm at the point where the top of the wing is at its thickest (highest point of curve)? The general rule of thumb for CG is 1/3 the wing chord from the leading edge.

P

[Coyote]

No idea how you can't get 2 Mini Talons to fly straight out the box when they have been the easiest planes to ever get in the air.

You have to be doing something wrong. But what I don't know. They literally take zero trim to fly.

[FPVSteve]

That's not strictly true - they're pretty sensitive to CoG placement, sometimes 1/2 an inch can make the world of difference.. I had to mark the exact position of my batteries so I didn't get a nasty surprise when switching them and/or not concentrating when putting them back in after charging.

And don't EVER make them tail heavy.

I'm actually dreading the maiden of my new build in case I cock the CoG up myself.

[hellsbells1]

yes steve well im not going back to servo wire!! last time i tried that disaster! staying at 55mm just gona put more  up elevator trim in for next test. I regard myself as a rooke as far as flying goes and have built a few planes now, but never had such a hard time with this particular plane! im always very nervous before i chuck never now whats gona happen? but hay ho! keep trying.

[Schalonsus]

Flying a Mini Talon at 55mm and need no trim at all. Maybe you need to fly faster? Dont slow the talon down to hard. Its a fast plane.

[hellsbells1]

 ok ok!! great got it flying ok just a question regarding inflight tuning?  for example   when ive made adjustments say roll & pitch on the tx landed and saved those numbers in the ap! can i then recentre the dials on my tx so if i need to access the inflight tuning to make adjustments it wont resort to default if that makes sense?. But other than that spent sometime tuning but on the turns it loses altitude slightly so would i just up the roll-p value 1-2 because c & alt seem fine ? also when rth is engaged it loses altitude also. so would small adjustment to the roll-p sort that out?  oh and had a go with auto launch no problems at all just bit the bullet! and went for it!!

                                           kind regards as always (hellsbells1)

[FPVSteve]

Great :)

So - what spec are we at .. battery, CoG etc

[Coyote]

Glad it's coming together. Adjusting roll would have no effect on altitude unless the roll is far to aggressive, then reducing it would help.

Regarding the trimming. Once you save the trims as a model, with the pots centred that's what the values will be. Then you can trim up or down from that point.

If it's looking altitude by a tiny amount I wouldn't look too hard onto it. It's not going to be like a precise  ( and unrealistic) video game. Don't forget it's a V Tail, so to do coordinated turns the AP would have to perfect a lot of mixing. So a little loss in altitudes fine really.

[hellsbells1]

ok steve c g stayed at 55mm just added 5 more clicks of up trim in elevator so up trim in total 15 clicks seems alot but really its not. its elevator  control surfaces up by about 3mm steve hardly noticble gona raise the cruize speed by 5 default its 55klm but ive noticed this plane is quick flying at around at  65klm its only drawing around 5-6amps really good, motor sunny sky 2216 1250kv spinning a apc 9x6e prop flew for 25mins used 3023mah out of 2x 2200 3s in parallal excuse my spelling didnt go to school when i was a kid. think ive got it sorted now steve flew great. but still cant understand how people fly this plane with no trim? must be magic. regards trevor.

[hellsbells1]

thanks ian its flying great to be honest its a big learning curve for me just a note im flying along at say 150m in alt mode but when i apply turn it drops by around 10m and then throttles up to get to desired alt which is 150m do you think i could play with roll-p and pitch-p maybe?

[Coyote]

Roll-P and Pitch-P are more to do with level flying more that a V-Tail coordinated turn, You could try increasing Alt-P but I think you are not going to see any massive improvements that won't have a detrimental effect elsewhere.