Over the course of my last two dives, I lost two propellers!!! ((I have a ‘very low mileage’ OpenROV 2.8))
First, I lost the vertical prop, because (I think) the motor bell was not properly seated in the mount when I built the ROV. When I went to descend, the motor popped out, wedged in the chassis, and the motor unscrewed the propeller. So, I ordered a prop kit from OpenROV. I also got a temporary R/C boat propeller from the local hobby shop that’s sold as a replacement for the “Aquacraft Reef Racer”, to hold me over until the real ones came. Unfortunately, the temporary propeller is way too small, generating barely enough force to push the ROV under the surface .
I lost the second propeller while driving my ROV around on the surface and testing the small vertical propeller. I really don’t know what happened–it just unscrewed itself while I was playing with it on speed ‘4’. Has anyone else had this problem? From now on, I’m tightening the crap outta those props before every dive. Alternatively, I’m thinking of using some locktite on the replacement props to keep this from happening again–Good idea?
And as luck would have it, OpenROV is waiting on a backorder of prop sets before they can ship me my replacements . Things are warming up here, the water is clearing up, the fish are starting to spawn, and I am extremely anxious to get my ROV up and running again! ASAP. Has anyone found any suitable alternatives to the Graupner props that OpenROV re-threads and sells? I’ve scoured the web, and can’t find anybody in the USA that sells anything similar to these propellers. Amazon has a lot of options, but very few details on them. The R/C boat prop that I got came with drive dogs that fit the M3 shafts, so I’d imagine that opens up some options…