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bendb89

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    botany

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  1. Hello, I just had my old car (Nissan Pulsar N15) running out of registration and rather than just sending it to the wreckers, I'm wrecking it myself to give some parts a second life (fixing it to make it roadworthy again would be too expensive.) I was thinking about turning the engine and gearbox into a self propelled hydraulic power pack - compressor - generator (I already have a fair bit of parts coming from tractors and others; pumps, belts, generators, rams, ...) I first thought about welding the diff locked, in the gearbox, connect one drive shaft to a rear axle and the other drive shaft to the generator (inverter technology) and the hydraulic pump on the power steering pulley. The compressor is the engine itself, two cylinders as engine, two cylinders as compressor. Then, I found another rear axle, about same size and reduction. So I thought, why not making it an articulated 4WD rig. It is a 110hp engine so, even running on two cylinders (no other load on the engine when moving,) with the 3.1:1 reduction of the axles, I can tow a trailer without trouble (tell me if I'm dreaming) In order to drive the alternator and hydraulic pump, I'd turn the crank pulley into a PTO, using the power steering pump to actually, well, just steer the rig. Now, comes the actual questions First, how much load can I put on the other end of the engine (the crank pulley side) without stressing it too much? I don't know much about the stress limits in an engine but I guess the crankshaft wouldn't appreciate to have to deliver 50hp thru the pulley end when the flywheel isn't loaded at all. But again, I could be wrong. Secondly, would I be better off using a custom pulley and drive my pump and generator with belts (which would make it easier to correct the rpm's of each) or should I better make a coaxial coupling to avoid lateral stress, eventually using a rubber coupling? Thank you for any other point of view or advice. Ben
  2. Hi there, Sorry, I didn't find an introduction section, so I'll do it here. I just joined the forum, in hope to get some different points of view and/or answers to things I'm working on (sometime on paper, sometime on application.) I'm working in farms and have my own projects. Most of the time, it is question of fixing things that you can't get parts for (not available or not affordable) and sometime, simply some crazy DIY projects... some would call backyard engineering. I don't have any proper qualification or formation in sciences or engineering (started Bio-engineer at the university in Belgium, at the Fusagx, but didn't achieve cause I could simply not stand sitting 8 hours a day) but I did, and still do, read a lot as I love learning. I hope I will enjoy using this forum. And hopefully, I'd be able to help someone too at some point. By the way, I'm originally from Belgium but live in Australia now so my English isn't perfect (my French either but I'm the one to blame for that) Ben
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