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Engine basics => Four strokes only => Topic started by: Air Ministry . on October 29, 2015, 08:53:28 PM

Title: Timing Slipped .
Post by: Air Ministry . on October 29, 2015, 08:53:28 PM

I think My Timings Slipped . Can anyone tell me which was these gears go .  ;D S?P

(http://www.petealbrecht.com/blog/bristol%20Hercules2.jpg)

( SORRY !  %^@ )

Title: Re: Timing Slipped .
Post by: Gordon Tarbell on October 30, 2015, 09:05:55 PM

Love to give that one a go! Looks like some sort of twin row 14cyl. unit.  All the cam gears appear to be inplace waiting for the follower housing and cover to be installed.  Always wanted to work on a large radial.

Title: Re: Timing Slipped .
Post by: Terry Caron on December 20, 2015, 01:15:54 PM

Looks to me like one of those big ones is upside down Matt.  ;D

Terry

Title: Re: Timing Slipped .
Post by: rustler on December 20, 2015, 01:45:26 PM

Looks like something Lauri built.  ???

Title: Re: Timing Slipped .
Post by: Tim Wescott on December 20, 2015, 03:32:50 PM

Bristol?  Sleeve valve?

I'm pretty sure that US radial engines used a single cam ring rotating at some magic fraction of the crankshaft speed with some magic number of bumps, but I don't know what the magic numbers are.

Title: Re: Timing Slipped .
Post by: Richard Logston on March 05, 2016, 12:57:39 PM

It appears the negator gear is miss timed to the central pivital mesher that can cause erratic timing. I am no expert on this subject so do some research before ordering any parts. Richard

Title: Re: Timing Slipped .
Post by: Robert Zambelli on March 07, 2016, 08:31:31 PM

Matt: I think you've discovered the secret of the turbo encabulator!

  https://www.youtube.com/watch?v=rLDgQg6bq7o

Title: Re: Timing Slipped .
Post by: Jim Kraft on March 08, 2016, 04:19:39 PM

I think I have one of those in my Buick Encore. Mine does not have that last modification though. Maybe I can get it updated. Ya think?