Hi every one,
This 1.5'' WTC is make from me， I will explain as follow:
1. This just a project sample, so I do it by acryl tube, and I will produce it by lexan when finalize the design.
2. The final edition will be extensible, and you can get right length for your sub
3. The ballast tank interface piece will be knock-down, and easy to maintenance
4. I make the brushless motor waterproof, beacuse I do some waterproof disposals to the winding, don't worry about rust and mar
So please wait for the final edition on CASWELL