In a message dated 6/29/2006 7:51:57 PM Pacific Daylight Time,
owner-fot-digest@autox.team.net writes:
> Date: Wed, 28 Jun 2006 15:41:49 -0400
> From: "John Herrera" <jrherrera90@hotmail.com>
> Subject: Re: [FOT] TR-6 for Sale
>
> >OK - I'll bite. Explain prop syncro on a Ford Tri-motor.
>
> Modern planes have automatic synchronizers that adjust the RPM of the slave
> engine(s) to the master engine to eliminate the beat frequency, but the old
> Ford didn't. The pilot would have to fiddle with the RPMs and listen.
>
> John H.
The first aircaft that I ever flew on was a, (then 50+ year old), 1930's
deHavilland dH.89A Dragon Rapide bi-plane with a pair of Gypsy Queen engines
that
most certainly were not synchronised!
The fabric and dope covered wings appeared to be held together with bits of
wire.
The approach to landing facing the north downs scarp slope/cliff face at RAF
Biggin Hill was most exciting, as the wavering gauges showed the engines were
both at or near stalling speed! (I remember the ill fated A26 Invader that had
crashed into that same cliff face a couple of years later), I was riding my
motorcycle along the valley floor, at the end of the airshow, and witnessed
the
fireball a little too close for comfort!
Regards
Lion
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