You may want to try cooling the shaft as much as possible while heating the coupling.
If the coupling is cast iron or similar the coefficient of expansion is different from 304 SS. https://amesweb.info/Materials/Linear-Thermal-Expansion-Coefficient-Metals.aspx While it isn't much heating both equally looks like it might make them bind more. Michael Brown Windburn C&C 30-1 From: Doug Mountjoy <svrebeccal...@gmail.com> To: "cnc-list@cnc-list.com" <cnc-list@cnc-list.com> Sent: 6/1/2020 11:50 AM Subject: Re: Stus-List Shaft coupler removal I would give it a try. I have never used Mapp gas. You will want to use as hot of flame as possible. On Mon, Jun 1, 2020 at 8:21 AM Josh Muckley via CnC-List <cnc-list@cnc-list.com> wrote: You think Map gas will be good enough? On Mon, Jun 1, 2020, 11:17 Doug Mountjoy via CnC-List <cnc-list@cnc-list.com> wrote: Josh, I used to work in a machine shop where I had to remove gears off of shafts. We used an acetylene torch to heat the gear fast, so the shaft didn't expand as fast. Using a slow heat source will heat the coupling and shaft at about the same rate. You want to expand the coupling faster than the shaft expands. Doug Mountjoy sv Rebecca Leah C&C Landfall 39 Port Orchard yacht club_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray -- Douglas Mountjoy 253-208-1412 Port Orchard YC, WA Rebecca Leah C&C LandFall 39
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
