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Topics - adhall

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Everything else / Injector Line Tachometer
« on: December 01, 2008, 08:18:47 PM »
Here is an interesting device that measures engine speed using a transducer that clamps onto an injector line. Don't see why it wouldn't work on a slow speed engine--it's supposed to work on any diesel regardless of the number of cylinders. Also serve as a run time meter and has a couple of programmable timers built in for service reminders. Price is a little high, though.

Best regards,
Andy Hall

Generators / Belt Length Calculations
« on: February 08, 2007, 11:30:55 PM »
So I'm working on the CAD layout for my gen-set frame and I got to the point where I wanted to know how long the drive belt should be. The CAD program I'm using can spit out a belt length after I draw it in to scale, and it turns out I would have been OK with this, but I thought I had better double-check it. I didn't want to buy a belt and then have to pitch it.

A quick web search located a couple of Gates design guides that applied to micro-v belts, so it looks like my problem is solved. But, unfortunately, the formulas in them did not generate values that agreed with what AutoCAD came up with. So I did some more web searching and found even more belt length formulas and all of them give out their own different belt length values. And none of them agreed with eachother. So now I'm like the guy with two clocks who never really knows what time it is.

More web searching located a web site with a very useful belt parameter calculator, and it gives exactly the same belt length numbers as the CAD program. Then I found yet another Gates engineering guide (apparently from Britain, based on the spellings) with another formula in it and this formula gives exactly the same numbers as the web based calculator and the CAD program. So now I've got three different techniques all giving the same number. I'm starting to feel sure of myself again.

For the benefit of the forum here is the link to the web calculator:

If you want to see the formula in the Gates manual, here is the link to that:

Best regards,
Andy Hall

Listeroid Engines / 6/1 Footprint
« on: January 30, 2007, 05:49:14 AM »
Could one you fine gentlemen tell me the width of the base of a 6/1 at the outside edges of the mounting mounting bolt tabs ? (This would be the widest point of the engine base measuring along a line parallel to the crankshaft.)

If you can't measure this, could you tell me the distance from the center of the mounting holes to the outside edge of the mounting tab? Even a rough measurement would be appreciated.

I have a drawing which gives the front to back distance across the base as 18-1/2", but it doesn't tell me how wide the base of the engine is.

Thanking you in advance.

Best regards,
Andy Hall

Generators / ST Heads in the Pacific NW
« on: January 20, 2007, 05:43:36 PM »
I am looking for an ST head in operation and powered by a Lister(oid) engine anywhere near by. I live about 50 miles West of Olympia, WA.

My purpose is to make some electrical and mechanical measurements in order to help further the development of an automatic voltage regulator.

If you would like to help me out, please PM me.

Best regards,
Andy Hall

Straight Vegetable Oil / Direct Injection and Vegetable Oil
« on: December 23, 2006, 07:30:58 AM »
I see that some of the Listeroids have direct injection.

Any opinions and/or experience to share regarding operating direct injection engines on vegetable oil?

Best regards,
Andy Hall

Generators / Direct Drive Genset
« on: December 14, 2006, 09:33:05 PM »
Has anybody looked into building a direct drive generator with a slow speed diesel?

One possibility is an 8-pole generator head coupled to a 1000 RPM rated engine running at 900 RPM. I have to admit I've had no luck finding an 8-pole generator yet.

Best regards,
Andy Hall

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