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I think a big part of the Cummins having favor is the availability of parts and know-how. Can't say the same for my Perkins.

I might just be over concerned. If the bronze ones don't fail then I can just disassemble, clean, reaseal and use new bronze bolts when it's hauled next. But - that assumes they don't suffer from crevice corrosion or other nastiness. The current one looks tough - like if I backed into a...

Wow - that looks really nice. Ideal to have no fasteners to worry about. I'm thinking in a new direction now.

I have a 1978 Mainship with what appears to be a bronze thru-hull for the exhaust. It's 4" diameter and I'd like to replace it during the next haul-out. It looks old and it's such a critical part I don't want to mess around. It looks like it's a straight flange with no angle. The bronze...

Nice! I have a '78. I put some ventilation holes with aluminum louver caps in the underside. Hardly noticeable and lets the core dry out - especially when the hot sun is pounding on it. You never hope or intend for moisture to eventually get in...but it does. Although probably not in the...

(when I saw this a minute ago there was a GIF showing the arneson drive. I guess it was an advertisement and is no longer showing. Sorry for the off-topic) Interesting about the Arneson drive GIF. He used to launch his dual turbine-powered catamarans at the same marina where I kept my boat...

I was holding the cylinder. There is a normal vibration in the hull from the engine. The cylinder has a nylon ball joint where it mounts to the hull. Unfortunately it's an outdated teleflex sytten version with no available parts. There is a slightly excessive drip from the packing that I've...

Everything feels tight, although it could just be corroded tight. I dove under and inspected everything a few months ago when I first discovered this and everything looked normal, very little play in the rudder. Is there a specification for how much lateral movement there should be at the...

Yeah, it could work. I keep a small outboard on-board for my dingy, and have bracket I can attach to my swim step to mount the outboard in case I need to use the outboard to move my mainship if my single diesel were to fail. Only works in the mildest of conditions. Of course you're talking...

While letting my cousin drive the '78 Mainship 34 at 2200 RPMs (10knots) I opened the lazarette and discovered a horrifically loud rattling of the steering piston. When I firmly grab the piston the noise stops. Any ideas what's causing this, and how to fix? It's a major contributor to the...

Panhandler, thank you x1000 for the link. This is a perfect system to integrate. I posted on their forum about this project. Stu, There are two pins on the Arduino that talk serial. These are connected to the GPIO pins on the RPI. I made up a sentence that has all the sensor readings and...

At this point the easiest and most flexible way to get the Arduino on the network is to hang the RPI on it. The arduino wifi sheild uses several pins, is not cheap, and is pretty limited with it what it can do. The Arduino has no networking ability built in.

Djones44, How are you with ios apps? Initially I was thinking this would just display engine data, but the RPI puts media, reference data, and all kinds of capability right out there. Do you have an app for your enclosure, or is just for keeping it dry?. Are you planning on having it join an...

Thanks for the link, I've never seen prices that low. I'll sent them business soon. I'm having a technical problem and need some help. Since the RPi is a Linux OS it can't just be turned off like the Arduino. In version 1 the power switch is on the side of the LCD enclosure and you can turn it...

Could somebody please explain the theory behind the angle iron on the aft edge of the rudder? This seems like it would cause significant drag and violates much of I thought I knew about hydrodynamics. Thanks, RR

Great idea!

Gabe_N_Em, and djones44, Thanks for the offers, when everything is up and running on the RPI I'll take you up on them. I was thinking about the web server on the RPi and thought there might be some additional uses. Maybe have a web page with the rules of the road, tide table, fish in season...

I've been looking at the low cost TFT displays, but I think with all the iPads out there it seems redundant. The tach on my boat runs off the alternator and it's totally inaccurate, which is why I've added the hall sensor. I think I've seen some amperage sensors that clamp around a wire to...

The WiFi-enabled version 2.0 wiring diagram and notes are published at https://bitbucket.org/R_P_Ryan/enginemonitor/wiki/Version_2_0, however version 2.0 is still work in progress. There are some cool javascript gauges that the Raspberry Pi can serve up. I took a close look at SignalK and it...

It's a toy sitting in the box with no project in mind. Once I got the basics of the Arduino figured out I thought I'd need these relays for something. Nothing yet to actually control at this point, just monitor. The sailing folks have done a ton with this sort of stuff, even setting up an...

It's very simple to add on a high-voltage, high-amp relay to the Arduino. There is also a high-power PWM motor controller shield. These two shields are sitting in my electronics box looking for a project.

WiFi has arrived Version 2 was much simpler than I thought. The Arduino connects three pins to three pins on the Raspberry Pi. There's a voltage shifter to adjust the Arduino 5v to the RPi 3.3v, but that was already in place for version 1. So it was really just a matter of loading some...

Are there any decent SignalK apps for the iPad/Android? From what I've read about SignalK it uses JSON over HTTP, which would be easy to publish from an embedded web server. The only issue I see is the need for an onboard wifi router as the Arduino wifi shield does not work as an access point...

Should be able to get those at McMaster too. I would consider using a dab of Hylomar on the threads.

Maybe I'm missing something, but the crankcase breather line goes to the intake side of the turbo on my T6.354. This is a similar setup as I've seen on lots of cars too. Why not just do that to eliminate the oily mist in the engine room?