Originally Posted by Scorpio9999
Just divide size in mm on 25.4. You will get inches. Size I mentioned is internal diameter of adapter. Just take sliding caliper with you to shop and find what is better for you. Small external diameter should be as default motor - 26mm ~ 1inch.
Bigger external diameter should be as size of "X" mount plate of YOUR motor. Then you need to cut unneccessary length from bigger side. Be ready that CG will be moved backward. I put almost all washers back in nose as I haven't extra electronics even with 2200mah battery.
P.S. Sorry for my ugly English. I'm Russian.
Thanks for the additional info, and your English is just fine
. Do you happen to know if this PVC adapter is for plumbing, electrical conduit, or something else?