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Showing results 1 to 25 of 364
Search took 0.01 seconds. Search: Posts Made By: FPNC
Forum: Engines and Propulsion Systems 23-04-2024, 06:11
Replies: 35
Views: 2,562
Posted By FPNC
Re: Twin Disk SP60 Sail Drive Clutch Problems

Making 53.9 hp @2700 RPM, your Sole Mini 60 exceeds the maximum Hp rating of the TMC60A. If you continue to use it, you will continue to have failures.

Short of submerging the transmission, I'm...
Forum: Engines and Propulsion Systems 15-04-2024, 07:19
Replies: 16
Views: 1,002
Posted By FPNC
Re: Repowering from a Westerbeke W46

The 45T is a low pressure turbo and does not create a lot of extra heat. Particularly at cruise rpm's. You may need to add a ventilation fan. Properly placed, it should work fine. You will need to...
Forum: Construction, Maintenance & Refit 15-04-2024, 06:49
Replies: 36
Views: 2,716
Posted By FPNC
Re: Fiberglass spider cracks

Cracks in gelcoat mean you have cracks in the fiberglass substrate that is immediately below the gelcoat. Normally, this substrate is a layer of resin rich fiberglass chop strand mat used as the...
Forum: Engines and Propulsion Systems 11-04-2024, 06:39
Replies: 13
Views: 448
Posted By FPNC
Re: Overheating cylinder, mercruiser 7.4L

It can also spray too much fuel and cause the oil around the piston rings to washout and increase friction. Eventually damaging the cylinder and piston. I've seen injectors so bad that gasoline was...
Forum: Engines and Propulsion Systems 11-04-2024, 05:30
Replies: 13
Views: 448
Posted By FPNC
Re: Overheating cylinder, mercruiser 7.4L

Check coolant ratio. If 50/50 is exceeded, your engine may over heat.

Most marine applications can use 40/60. Which will provide better heat transfer and cool the engine better. I believe 40/60...
Forum: Engines and Propulsion Systems 09-04-2024, 07:49
Replies: 13
Views: 16,479
Posted By FPNC
Re: opinion on perkins 4-236

It depends on the ratio of the Velvet Drive.

For any CCW rotation flywheel:

A 72c 1.91:1 will turn a RH prop
A 72c 2.10:1 will turn a LH prop
A 72c 2.57:1 will turn a LH prop
A 72c 2.91:1...
Forum: Engines and Propulsion Systems 09-04-2024, 05:04
Replies: 13
Views: 16,479
Posted By FPNC
Re: a minor consideration...

The majority of diesel engines have a crank that turns with a left hand rotation. ( CCW when looking at the flywheel )

Propeller rotation is dictated by the transmission design. Some...
Forum: Engines and Propulsion Systems 08-04-2024, 05:24
Replies: 1
Views: 252
Posted By FPNC
Re: 2002 C & C 121 repower

Your Volvo was a 38-40 hp engine and has 3 cylinders. Most replacement engines of that Hp rating will be a 4 cylinder engine and to tight of a fight. The good news is that your vessel is over...
Forum: Propellers & Drive Systems 04-04-2024, 05:43
Replies: 11
Views: 719
Posted By FPNC
Re: Water in saildrive - bad luck or?

Do not overlook the o-ring around the drain plug at the bottom of the drive.
It is cheap insurance to replace the o-ring every time the plug is removed. Most people do not do this.
Forum: Engines and Propulsion Systems 27-03-2024, 06:07
Replies: 14
Views: 565
Posted By FPNC
Re: Engine oil analysis

With a 45 year old engine that runs well, all you are looking for is salt water or anti freeze or diesel fuel in the oil.
Forum: Electrical: Batteries, Generators & Solar 26-03-2024, 12:39
Replies: 167
Views: 12,493
Posted By FPNC
Re: Open Source Arduino Alternator Regulator

A stator tach signal that will maintain stability and not cut out.
Forum: Engines and Propulsion Systems 22-03-2024, 07:31
Replies: 6
Views: 748
Posted By FPNC
Re: Alternative for Volvo Penta MD22 Torsion Vibration Damper

Call PYI, in Lynnwood, WA, USA (425) 355-3669 They distribute R&D drive plates and will be able to supply a plate that does not use springs and is a reasonable price.
Forum: Engines and Propulsion Systems 19-03-2024, 08:34
Replies: 5
Views: 537
Posted By FPNC
Re: Import Beta engine from UK to USA

You need to call Beta USA or Beta UK. There are restrictions to importing the Beta 90, (which is not an EPA, Tier 4 engine) into the USA. If the engine is going into a yacht that is being exported...
Forum: General Sailing Forum 15-03-2024, 12:32
Replies: 137
Views: 12,755
Posted By FPNC
Re: Diesel RPM?

Kubota engines are used in generator applications where the engine runs at 1800 rpm (60 hz) or 1500 rpm (50 hz,Europe) continuously, for the life of the engine. Which is a long time.

The best...
Forum: Propellers & Drive Systems 15-03-2024, 05:07
Replies: 3
Views: 371
Posted By FPNC
Re: ZF68IV / ZF63 IV no oil pressure

Kudos to you for letting us know how it worked out. The final solution is always more important and more interesting than the pontification and prognostication.
Forum: Propellers & Drive Systems 14-03-2024, 06:39
Replies: 3
Views: 371
Posted By FPNC
Re: ZF68IV / ZF63 IV no oil pressure

I am assuming that it is a mechanical shift. You my have broken the segment rings when you uninstalled and reinstalled the pump.
Forum: Engines and Propulsion Systems 14-03-2024, 06:29
Replies: 5
Views: 428
Posted By FPNC
Re: Velvet Drive Identification

Provide a photo. Provide the Length of the transmission. Measure the gear reduction using a photo tach for the engine crank RPM and prop shaft RPM and dividing the crank speed by the prop shaft RPM....
Forum: Electrical: Batteries, Generators & Solar 04-03-2024, 10:46
Replies: 5
Views: 376
Posted By FPNC
Re: Balmar regulator behaviour

Regulators vary field voltage in order to maintain a preset charge/system voltage. The Balmar unit can even shut off field voltage if it detects an over voltage.

Make sure that you do not have a...
Forum: Construction, Maintenance & Refit 29-02-2024, 12:17
Replies: 29
Views: 2,557
Posted By FPNC
Re: Putting a slight bend in 1" SS Tubing

If your handy, you can borrow a 1" conduit hicky from an electrician and work a gentle bend into the pipe.
Forum: Electrical: Batteries, Generators & Solar 05-02-2024, 13:18
Replies: 50
Views: 4,693
Posted By FPNC
Re: Teeny Tiny Wire - Big Headache

Use an non-insulated parallel butt splice with a single crimp and then cover with heat shrink which has heat sealing glue on the inside wall.
Forum: Engines and Propulsion Systems 01-02-2024, 12:24
Replies: 35
Views: 2,562
Posted By FPNC
Re: Twin Disk SP60 Sail Drive Clutch Problems

There is a clutch/shift adjustment that can be made in situ. It may or may not solve the problem.

If the mechanics you are using don't know about this adjustment, you need to get better...
Forum: Construction, Maintenance & Refit 30-01-2024, 05:00
Replies: 15
Views: 2,010
Posted By FPNC
Re: Polyester V' Resin V' Gelcoat. Can I use together ?

They make vinylester gelcoat.
Forum: Propellers & Drive Systems 24-01-2024, 06:38
Replies: 82
Views: 45,967
Posted By FPNC
Re: Excessive Wear on SD40 Yanmar Cone Clutch

I was there when Mercury started to offer the Bravo drives with diesels back in the 80's. The diesel engine torque and harmonics tore the clutches and the gears up. They then started using special...
Forum: Propellers & Drive Systems 23-01-2024, 09:34
Replies: 82
Views: 45,967
Posted By FPNC
Re: Excessive Wear on SD40 Yanmar Cone Clutch

The SD50 drive has a cone clutch. Yanmar recommends the clutch cone be 'Inspected and replaced or lapped every 500 hours'. This is considered normal maintenance and does not require any further...
Forum: Engines and Propulsion Systems 22-01-2024, 06:05
Replies: 39
Views: 13,864
Posted By FPNC
Re: ZF SD10 Sail Drive Replacement

You will find it in the work shop manual for the drive or on a TwinDisc work shop bulletin.
Showing results 1 to 25 of 364
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