Negatory. Do not engage synchronizer until both motors are well up to speed or the master will be doing most of the pulling with the slave lagging. You want them both churning. I work the throttles up in sort of a wrist twisting motion. But that's just a personal thing. No reason to disengage sync slowing down; it'll come off plane straighter synced.
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Thread: Planing off with Detroits
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Re: Planing off with Detroits
Semper Siesta
Robert Clarkson
ASLAN, 1983 55C #343
Charleston, SC
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Re: Planing off with Detroits
Haven't been on here in a while. I have owned my old 1972 43' DCFB, since 1997, which I view as very reliable. They are non-turbo 6-71N's, 310hp and original, with full 50#'s oil pressure above 900 rpm, as a function of the lift off valve; right engine in -framed in 1995 and they have 2,400 hrs.
My suggestion/policy is to allow them to run at 11-1,400 rpm, until their temperatures come up, i.e. at hull speed. Any internal combustion engine should near full temperature, before heavy loading, to ensure internal clearances are stable. Once temps are up, don't slam the throttles to wide open, but bring up rpm's to allow 10-15 secs to reach full throttle. When on-plane, set the trim tabs to level out. Finally, engage syncros.
My 2cw.50 Years on the Great Lakes...
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Re: Planing off with Detroits
Jonathan Brein
1982 43' DCFB #550
"Paragon"
Chesapeake, Virginia