I have seen you know the ums 7.70. I have just bought a new one but I have some problems. At the first beginning I installed the electronic ignition suggested by Seidel ( Herbert Holze) but practicallyit remains always inserted discharging rapidly the lipo battery. i have disconnected it and started with the standard 2v pb battery. The current is regulated to 3 A per glow.
But I have problems anyway. If I disconnect the power at any RPM rate the engine stops!!. I wrote to Seidel assistance in swisse and they suggested me to open the jet nozzle more( 3 or 4 turns) but I have the same problem. Can anybody help me? Have I perhaps done something wrong?

I have followed all the builder instructions!!
Thanks to all
Fabrizio<br type="_moz" />