There is very little I enjoy more than learning something new. A traditional aerospace project is an effort involving thousands of specialties. This offers the opportunity to learn thousands of specialties. I have received my Peroxide compatible pump, fuel pump, and motor. I’m in the process of assembling a gear box. I’ve never built a gear box before so one gets to learn new terms like pressure angle and involute. As well as use new tools.. I’m continuously impressed with the variety of free tools available on the web. I’d gathered all the shafts, bearings, gears, parts and etc in to a big pile on my desk. I spent the better part of yesterday laying out the gear box.
I have a fully 3d capable cad system, but I usually do my layouts as 2D line drawings. I find this easier than making a 3D model. My gear box sketch is below as I have been using it (Labels added for your viewing pleasure)
I’ve machined the top base plate, the adaptor that joins the peroxide pump to the base plate and the curved offset spacers. (Only shown in top view the semi circular arcs with screw holes ). Today I’m going to try and build the complicated shaft that connects the two pumps to each other and to the gear drive. I’m also going to finish bore the gears and lighten them. If all goes really well I may even get to a full trial assembly.
This shows the peroxide pump and the aluminum adaptor connecting it to the main plate. It also shows the curved spacers.
Monday Morning update. I machined the shaft and couplers for the pump side , I also lightened he commercial gears and bored the one that needed bored.