[Hurri]

Any body with some good ideas - I have an 84 " Dornier twin eng; bomber with 2 OS -40-4/s model is a 23G with fixed gear , circa 1935 .
Both engs run great on their own , but taxi out & the port [left] one always quits , lucky before I get off . Been told it is vibration /harmonics . There is very little room in the cowls for engs , have foam rubber around tanks . If I had lots of bread I'd have had electric in , but this was a cple of years ago I built it . Have read of putting the 2 cylinders at different angle , but the engs are upright & no other way for it to be scale .

[michel gravelle]

Hi

Have you tryed switching engine from either side ? I read about this in RCU . I read a lot about twins now- adays . Check youre fuel lines very carefully . Make sure that youre props are ballanced , this includes the prop and the hub of the prop ( that means twice ) This might take care of the vibes . These are only thoughts

I always balance my prop , than I balance the hub of the prop , It really helps a lot


Mike

[Hurri]

Thanks Michel , Good points . Actually i took them out of the twin & been using them in a small biplane to run in some more , so have mixed which was where . Balance prop ok , but the hub is only 3/4 " diam , so a bit difficult . Thanks Hurri

[michel gravelle]

Hi Hurri

Go to ....downonthedeck.com and check out the instuctional videos ,prop balanceing .

Close all the windows It works that well . make sure you turn off the cieling fan .

Have fun

Mike