Bil Baxter,
The plans came from the January 1972 issue of RCModeler. My attempts to contact the fellow who designed it (JIM PYNER ) have not been successful also, I have not found anyone else who built the model to find out how it worked out.
There was another JU52 plan published by RCMagazine some years later that used three .25 glow engines but it was smaller.
I built the model just as it was designed however it wasn't quite finished ,radio and engines were not installed ,but for family reasons it was put aside for quite some time.
Now that I am attempting to finish the model I am having second thoughts about the power.
I thought that maybe with the changes in our hobby since 1972 there would be better choices for the power plants. I looked for models in this weight range and could not find any that recomended a .61 for power.
I didn't think to relate weight and sq.in of area in my search, maybe I should have searched more. I am also going by advice of some of my club members
I've so far gotten advice that ranges from three .25 glow engines to all electric, all seeming to come from people who know what they are talking about, but I'm getting is more confused.
Scale flight for a WW11 transport with reliable power plants is all I'm looking for.
Certainly the .61 in the nose is the easiest and most practical way for me to go, I wish I had more confidence that it would be ok.
Thanks for your help Bud