Reading a Glendenny?????????????????

[Gina Marie]

Today I was in heaven, I took my 45C fishing and Yesterday I had my bottom scrapped and new zincs put on. The diver nice guy Rich indicated that my bottom was clean but my running gear had build up. It came out of the yard in Feburary with a new Bottom paint. I came out of the inlet an began to power her up and once she was planning I pulled the knob for the sync's which is the glendenny( I not sure if I am spelling it right.) I pushed my Starboard throttle WOT and inched up my port which is the master. The boat climbed and the turbo's kicked in at asbout 1600 RPM. My GPS was reading 15Kt's and climbing once she settled at 18/1900RPM I was cruising at 19.5 to 20.9KTS. That was fantastic. Is their question??????????????????????????

My port tach was reading 18 to 19 hundred which was my master that was were I was cruising. My slave the starboard was reading 20 to 2200 RPM. Could someone explain to me is the port RPM right or is the starboard RPM right. Sync was engaged. I don't want to push the engines at cruise above 1900RPM. I love the fact I am hitting 19 KTS. Clean burn and nice fish tail.

Thnaks for advice. Gina Marie/Tom

 

[SKYCHENEY]

Were they in sync? You can tell by the sound. I never had a syncronizer until I bought my 53. I always went by sound. If they don't purr to the same rythm then your Glendenning is not working.

 

[Gina Marie]

In the open sea on the bridge they sounded as though they were in sync. But how does the slave read more than the master??????????????????

 

[hattitude]

I have a glendinning synchronizer on my 46C. It is the second boat I've owned with one.

Once it is engaged, the slave throttle should be pushed all the way forward to relieve stress on the cable. When you do this, it should have less resistance than when it operates the throttle. Most important, when you do this, the slave engine should stay at the same RPM that the master engine is set to. As the master engine throttle is moved, both engines should read the same RPM

Once in awhile, I will engage the synchro, but when I push the slave forward, the slave engine rpm increases. I will have to turn off the synchro, throttle both back and start again. Either a bad power switch or not enough RPM seperation for the unit to engage. The master needs to be at a higher RPM than the slave for the unit to engage.

If it is engaged properly, and the engine rpms are not the same (and it is not a tach issue) then the tach senders on the synchro unit could have a problem and/or the clutches that move the slave engine cable shaft are worn.

I had a problem with the synchro on my last boat. I contacted the company and they were extremely helpful. Turned out my clutches were worn out. I sent them my old unit and they sent me a new one for about 50% the cost of a new one. Pretty impressive considering the old unit was about six years old.

Give Glendinning a call at (843)399-6146 or check out their website www.glendinningprods.com

When they're working they are great.

 

[SKYCHENEY]

If they sounded as though they were syncronized then they probably were in sync. That means that your tachs are off. This is not uncommon. Do you have dual stations? If so, check your other set of tachs to see if they read the same.

 

[Captcoop]

Your syncronizer is mechanical, it doesn't need input from the tach to work. I would determine which tach is correct and adjuct the other to match. First check your connections to the ground and the pulse generator if they are good you can adjust the rpm on the bottom of the tach. There is a screw that will change the reading to show the correct rpm to match the other tach. Good Luck

 

[Nonchalant1]

Engines out of synch make a pulsating "thrumming" sound. Normally, as you accelerate the master engine, you can hear the thrumming pulses get longer and longer as the synch brings the slave engine up to speed, and then the pulsating disappear when the engines are running at the same RPM. If your synch is working, it will not operate with non-synchronized speeds for long. It tries to bring the slave engine up to speed for less than one minute. If it can't reach synchronization by then, it shuts off the slave engine control.

Do you happen to have Flo-Scans? If so, read the RPM on them since it's digital and REALLY accurate (like to 1 RPM or so). When I read my regular tachs, it looks like the starboard engine is low by 100 RPM or so, but when I read the Flo-Scans, the Glendinning is keeping them within 2 RPM of each other at all speeds.

Ditto on the need to advance the slave throttle after engaging the synchronizer.

Doug Shuman
1978 53MY