"Doug Younker" <[EMAIL PROTECTED]> wrote: > Daryl, > > You have me pondering this screw powered splitter. Would you arrange it > so the screw is under tension or compression on the splitting stroke? What > style of thread would you use, would you use a single or double helix? IMO > Greg probably has the simple method of taking up the slack. > Doug, N0LKK > [EMAIL PROTECTED]
Not ignoring anyone, just catching up after falling behind. I have a couple of thoughts on this. First, is to use a double-screw axle jack. These are common (or were) for 3/4 and 1-ton trucks here. Put this on its side (so it pushes horizontally instead of vertically, and turn the crank, possibly with a geared-down electric motor. Retract the ram by reversing the motor. Slow, but rated at 3 tons, so should have lots of drive to split wood. Normally hand powered, so not a lot of power consumption. About 12 inches of drive action. Second is to use an automotive scissors jack. I have encountered these primarily in Japanese and French cars. I would put the jack on its side, so the part that was normally on the ground would be against the log, and the part that lifted the car would be against the splitter frame, attached in some manner. Then, a motor would drive the screw in the jack. I have visions of attaching the motor to the jack screw somehow, so it will travel with the screw, which will move relative to the frame in operation. I have seen these jacks with up to 15 inches of travel, and rated for about a ton, typically. Again, designed to be operated by hand, so power consumption should be low. So far, I think I prefer option 1. Building up a short hand crank shouldn't be hard. So I would have the option of using hand power (like an old brace and bit hand drill) or a geared down electric motor on the same unit. Decisions, decisions. Multiple jacks, mechanical and hydraulic, and axes and mauls. Or should I just collect sawdust and woodchips and make briquettes? Darryl > > ----- Original Message ----- > From: "Darryl McMahon" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Sunday, October 24, 2004 11:33 AM > Subject: Re: [Biofuel] Electric Yard Tools (was Trees and power companies) > > > : Responding to several recent e-mails - thanks to all. > : > : Fritz, I've heard that it's easier to split wood when frozen. However, I > don't > : plan to be where the wood is this winter - other commitments. Next winter > could be > : another story. > : > : Greg, the spring has potential, but I would have to work against it while > doing the > : spliiting. I'm thinking more of a rope and lever to reduce the muscle > work > : overall. I had also thought about making the head-end adjustable (say 2" > slot > : spacing) to take up the slack, but mostly to deal with various length > pieces. > : > : Hoagie, thanks for the link to Harbor Freight. I have heard there are > issues with > : getting to ship cross-border. On the other hand, a Canadian company may > have a > : similar product (e.g. Princess Auto). I'll have to look into that. > However, the > : illustrations may help if I still elect to build my own. > : > : I expect if I build something to work with the hydraulic (jack) cylinder I > have > : now, I can always convert it later to a screw jack or electrically-driven > : hydraulics. > : > : Mel, I have not looked at the HP page you cited yet, but I definitely > will. Must > : be from an issue I missed before my subscription started. > : > : Thanks again to all. For starters though, I'm going to get a new handle > for the > : old double-edged axe. Always had a nice heft, and although originally > made for > : felling, has always done a nice job of splitting hardwood. > : > : Darryl McMahon > > > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.779 / Virus Database: 526 - Release Date: 10/19/2004 > > _______________________________________________ > Biofuel mailing list > [EMAIL PROTECTED] > http://wwia.org/mailman/listinfo.cgi/biofuel > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Biofuel archives at Infoarchive.net (searchable): > http://infoarchive.net/sgroup/biofuel/ > -- Darryl McMahon http://www.econogics.com/ It's your planet. If you won't look after it, who will? _______________________________________________ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo.cgi/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/
