Just a few words concerning my experience as a model submarine builder:
I started with the hobby 9 years ago and I have built 6 models using different types of diving systems. So I think I know quite well advantages and disadvantages of each one.
My first model was the type XXI from Robbe that I have fully upgraded into a static diving .
The last model I have built is Revell Skipjack using a gear pump and rubber bag as diving system.
I am looking forward to share experiences with the fórum members