Jeti Reference DataBase

[wfield0455]

I am stumped.......have been working on mixing my flaps to my elevator to compensate for a nose up situation when flaps deployed. Have tried using free mixes and not working out.
get half way to first flap setting and elevator drops... that's fine BUT when going to full flaps the elevator reverses back up to neutral when it should drop further. H E L P !
Right now I think I am more confused than when I started.....lol. Step by step would be a great help. Thanks
B
The other question : when I drop my flaps from cruise to takeoff setting the right flap doesn't drop quit as much; close but not close enough for my liking. The same with full flaps. I am using the 3 position SD switch for my flaps with separate servos plugged into channels 7 and 8. I can't seem to adjust the right flap for a little extra throw to match the left.

Many thanks. Screen shots really help.... The geometry setup is right on.

A couple of suggestions;
1) create 3 flight modes, no flaps, half flaps, full flaps. Use your flap switch to select these flight modes and go control the flaps.. Set a flight mode delay to control flap deployment speed instead of servo speed..

2) You can use servo settings, end points subtrim, etc to get equal flao depkoyment or you can use the flight mode trim menu to adjust each flap individually. Change flight mode trim from G to S so you can have separate trims for each flight mode..

3) Get rid of your elevator comp mix.. Instead simply go into the digital trim menu and change ekevator from G to S baking it flight mode dependent. It also follows flight mode delay so your elevator trim will change to match your flap drployment speed. In flight simply select the half flap flight mode and use your transmitter trim to adjust for the desired approach speed. Select full flaps and repeat the process..

Done...

Wayne

[stegl]

so what you are saying is that when you say drop flaps to takeoff flaps and then use the digital trim buttons or auto trim ; to trim for level flight; that the radio settings will remember that trim for that flap setting ? and the same when you set the flaps for full flap and then trim buttons or auto trim for level flight . if that is the case sounds simple.

When I go to the flight mode trim and try to adjust Flap S1 and S2 both adjust at the same rate and not individually. What am I missing ?

Thanks for the help and hope to get resolved.

[wfield0455]

so what you are saying is that when you say drop flaps to takeoff flaps and then use the digital trim buttons or auto trim ; to trim for level flight; that the radio settings will remember that trim for that flap setting ? and the same when you set the flaps for full flap and then trim buttons or auto trim for level flight . if that is the case sounds simple.

When I go to the flight mode trim and try to adjust Flap S1 and S2 both adjust at the same rate and not individually. What am I missing ?

Thanks for the help and hope to get resolved.

Yes, by setting the digital trim for elevator to S instead of G that means that you will have separate elevator trims for each flight mode. Since you would create flight modes for Normal, Half and Full Flaps each of those flight modes would have their own unique elevator trims and no messing with mixes. You simply fly the plane, select each flight mode and trim as desired. Also, since I suggested using flight mode delays, that will also control your flap deployment rate, whenever you change flight modes, all your trims, flaps, everything that is based on flight modes will all change in sync to the flight mode delay.

Yes, by default, in Flight Mode trim, both move together, which is good for gross adjustments and to get them close. Say you want 20 degrees of flap at half flap, use flight mode trim to get them both as close as possible. Lets for example say that when you adjust your flaps your right flap is exactly 20 degrees but your left flaps is 21 degrees. While still in the flight mode trim menu, press the F1 key (Sym) and then you will be able to individually tweak S1 and S2 to get them both exactly where you want..

Wayne

[tbrum]

Len... have you tried the Butterfly menu? I use that menu to mix in crow on my ailerons and elevator compensation with my takeoff and landing flaps. Works awesome and there is compensation in the menu to balance each elevator and aileron. if you use the Butterfly menu, you don't have to do flight modes if you don't want.

Trev

[stegl]

Ok , thanks for the input. Heading out to the Princeton jet rally today and was hoping to get my AD Turbo beaver flap/ elevator setup as I get fair bit of pitch up when flaps deployed on floats. Now on wheels. Pics and videos in Rccanada under giant scale and show your aircraft pics. Getting a bit clearer now. Love the radio, but maybe just too many options. Thanks
For the tips. Will let you know how I make out as there are other Jeti users coming.

[stegl]

Worked like a hot damn to fine tune and get the flaps to drop together. Wasn't able to get the flap to elevator mix to work but will look at that this week...... Found that the Wren TP
3 degrees down and 3 right didn't fare so well so will be taking that out to about 1 Down and 1 right . Otherwise that Wren 44 TP with a 24 X 10 2 blade wood prop had her off the runway in about 75 feet ( about 30 pounds).

[stegl]

Have a questions and hope readers can chime in on the range checking..... Just how low can the receiver strength go before signal is lost for the receiver to process information to the servos ? would these numbers apply also when doing a low power range check ? Would the receiver go to failsafe when signals reach zero or would it be more like 1 or 2 , for example ?

Any and all observations would be appreciated.
Thanks in advance.

[wfield0455]

Have a questions and hope readers can chime in on the range checking..... Just how low can the receiver strength go before signal is lost for the receiver to process information to the servos ? would these numbers apply also when doing a low power range check ? Would the receiver go to failsafe when signals reach zero or would it be more like 1 or 2 , for example ?

Any and all observations would be appreciated.
Thanks in advance.

When I range check my models, in low power / range test mode I can get about 50 - 75 meters without my antenna values going below about 6-8 and I get excellent range and signal quality (Q) flying 120cc - 170cc sized gas airplanes to the limit of my eye sight, which is probably about 600M.

I'm not sure there is an actual minimum useful antenna value as in a remote location with few other 2.4Ghz sources around I've seen good Q values with antenna values of 2 or 3 and I've seen low Q values with antenna values of 6-7 at noisy locations. Also, even if you lose telemetry, which will result in no antenna or Q values, you won't necessarily lose control of the airplane since the telemetry link back to the transmitter is lower power than the control link.

The receiver will only go into fail-safe if it receives NO valid data within the fail-safe interval which I think is 1.5S by default. If even a single packet gets through, it comes out of fail-safe for another 1.5S interval. Control may be very choppy if you are running with a very low Q value or close to the limits of range but you will still have some control and not go into fail-safe.

Wayne

[stegl]

Thanks for the input , Wayne. I am assuming that when you say 1.5S that is 1.5 seconds ? Do follow the noisy vs the quieter locations will affect what is received. Loosing the link from the receiver is a good point I missed and make sense.
Any and all other observations appreciated also; as many see things in a different light from their experiences with the Jeti.
thanks in advance.

[Sibola]