Twister Storm 3D Standard Gyro HL400

[cjcj1949]

I've found a way to reset the HL400 Gyro with my DX6i. Use both modes Rate and Hold. Switch on in Rate mode. The tail blades will follow your tx tail input. Hopfully it will be close to centre trim and close to the correct trim for rate mode and the servo will not move. When ready to take off waggle sticks to check gyro function. Switch to hold mode and waggle sticks. Note that blades move and can end up in any position. Don't try to take off. Set tx trim to zero on tail. Select rate mode, note that blades go to position set by your rate mode trim, should be close to correct flying trim. Switch to hold mode. Tail blades will not move. Take off. The tail will not move. I don't know how far your mechanical trim can be out for the gyro to keep hold. Mine is 4 clicks right and is OK.

To sum up before takeoff select rate mode briefly then go back to hold.

Rate mode resets the heading hold integrator. This may work with the HL800 but I don't have one. This only applies to my HL400 with my DX6i. It should work with yours but different txs may have different pulse widths at the zero trim position. You will have to find the trim position for no change in heading hold.

I haven't investigated changes in temperature yet. When I switch to hold mode I now check that the angle of the tail blade is correct, roughly pointing about an inch outside the right skid.

[Mojogoes]

I'll have a go with this next time i get a chance to fly , though having just reset the tail servo after having to adjust the boost for better belt tension going from rate to HH on the switch now the servo doesn't move...........though it has done before so i've desconnected and then reconnected power and its reset to where its good to go but i've put this down to the temp adjustment of the gyro depending how long its been left out side and whether or not i powered it up in the boot of the car or out on the field etc......but again i'm not a 100% either i just know it sometime happens...........though just put it into HH a quick wag of the tail then off usually!

[cjcj1949]

Thanks for the reply. I'm not so sure now what's going on. It's more complicated than I thought. Nobody else has agreed with this post so it's probably too simple a view of what's going on or to use a technical term cr?p. The only thing I know for sure is that my HL400 servo can do a one and a half turn on it's own as soon as it takes off. Nobody experienced thinks that the HL400 is any good. Even the manufacturers say to give it 10 to 15 mins at the field before flying. The distributors J Perkins can't give any technical information or even a manufacturer's name. I'm looking at the Align gyro/servo combination at £69.99 at the moment. I think it looks as though nobody has a good word for this gyro except J Perkins who call it a contest class gyro. Perhaps it's a contest to use it?