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General control line discussion => Open Forum => Topic started by: pipemakermike on January 04, 2014, 01:56:19 AM

Title: The JCT propeller making team
Post by: pipemakermike on January 04, 2014, 01:56:19 AM: A force to be feared when the new props are finished

(http://stunthanger.com/smf/index.php?action=dlattach;topic=33791.0;attach=139484)
Title: Re: The JCT propeller making team
Post by: Peter Ferguson on January 04, 2014, 08:15:37 AM: thats my facebook photo , has been for years. I'm the good looking one.
Title: Re: The JCT propeller making team
Post by: Jim Kraft on January 04, 2014, 11:01:04 AM: It's pretty simple really, you just carve away everything that is not a prop. If the JCT can do it, anybody can.
Title: Re: The JCT propeller making team
Post by: Howard Rush on January 04, 2014, 11:14:02 AM: Yes, the JCT hired Lilliputians to make our props, but lately we're outsourcing the props to Canada.
Title: Re: The JCT propeller making team
Post by: Dave_Trible on January 04, 2014, 11:26:47 AM: ...
Title: Re: The JCT propeller making team
Post by: Larry Wong on January 04, 2014, 03:40:50 PM: Look's like the Canadian's got it right. now for 2014 New Top Guns. <= #^ n~
Title: Re: The JCT propeller making team
Post by: Peter Grabenstein on January 05, 2014, 12:18:02 AM: Quote from: Howard Rush on January 04, 2014, 11:14:02 AM
Yes, the JCT hired Lilliputians to make our props, but lately we're outsourcing the props to Canada.

Yep, just cut em down to 11.5 or 12.0 size and repitch them under hot watersteam to 4.5 .
Then you good to go y1.
Not to forget the bushing for crankshaft at the hub and balancing n1.

Impacts zijn oranje y1,
Noblers zijn blauw :##,
Wooden props zijn brown %^@,
JCT props wont let you down ;D.

LL~ LL~ LL~ LL~ LL~ LL~ LL~ LL~
Title: Re: The JCT propeller making team
Post by: Douglas Ames on January 05, 2014, 01:45:18 PM: Looks like the little blocks are clamping shims as each layer is glued & clamped separately. Interesting.
Title: Re: The JCT propeller making team
Post by: RknRusty on January 05, 2014, 04:53:53 PM: I had no idea that is how a prop is built up. Thanks for posting.

Rusty
Title: Re: The JCT propeller making team
Post by: Steve Helmick on January 05, 2014, 09:49:32 PM: It appears that the boys are making LH & RH props, maybe. Like the Canadian Propeller Works (CPW).

I'm thinking that the boys (couldn't be the Wrights?) bandsawed out the laminations, and made the little blocks to index the laminations one to another, not clamping them (?). The blocks would probably have been made on a table saw. Looks like the guy on the right is knocking the blocks off, while the guy on the left is planing the laminations into a RevUp. ;) Steve
Title: Re: The JCT propeller making team
Post by: Douglas Ames on January 06, 2014, 09:50:48 AM: Quote from: Steve Helmick on January 05, 2014, 09:49:32 PM
It appears that the boys are making LH & RH props, maybe. Like the Canadian Propeller Works (CPW).

I'm thinking that the boys (couldn't be the Wrights?) bandsawed out the laminations, and made the little blocks to index the laminations one to another, not clamping them (?). The blocks would probably have been made on a table saw. Looks like the guy on the right is knocking the blocks off, while the guy on the left is planing the laminations into a RevUp. ;) Steve

Could be. The layers can move around while being clamped, had that happen on some profile engine doublers in the past.
Title: Re: The JCT propeller making team
Post by: john e. holliday on January 06, 2014, 12:00:58 PM: I can't find it now, but there was a video on making those old wooden props on You Tube at one time.