O ring size for prop saver ?

[alan0043]

Hi Everyone,

I know this is a rookie question. But what size O rings to use for a prop saver ? The motor that I am using is a Sunnysky X2305-15 Kv 1620. The motor that I have did not have an O ring. This is my first 3D foamie. I also know that you can buy O rings at the big box stores. You can get sizes like 15,16,17,etc. So what size do you guys think ?

All input is welcomed,

 

[Bricks]

Me personally hate prop savers and refuse to use them, saying that easiest is get some of the round tubing used for rehab and make your own . A 12 inch piece will make more then you will use in a year. If your close to a hospital that does rehab stop in and ask for a piece, or order it off of Ebay or similar.

 

[Foamforce]

I have gotten some at Home Depot before, but the basic plumbing o-rings that I got were thicker, making it harder to get them to stay on. Value Hobby has better ones for cheap, although you have to pay shipping.

O-Ring for Prop Savers (20*15*2.5mm) (10pcs)

valuehobby.com