Islander Posted February 22, 2012 Share Posted February 22, 2012 Some fine work here: http://www.wimp.com/tiniestengine/ Quote Link to comment Share on other sites More sharing options...
JerolW Posted February 22, 2012 Share Posted February 22, 2012 Very cool. jerol Quote Link to comment Share on other sites More sharing options...
Moderators dtel Posted February 22, 2012 Moderators Share Posted February 22, 2012 Unbelievable Quote Link to comment Share on other sites More sharing options...
Guest " " Posted February 22, 2012 Share Posted February 22, 2012 1200 hrs in the making. Great admiration for his work. Just wondering if the engine ran using fuel or was it just turning via an electric motor. didn't see any exhaust smoke or blow by from the 12 pistons that did not have any piston rings. Since he didn't use lock tight on any of the screws, makes me think the motor was just a functional model powered by an electric motor. If it was running off fuel, would love to see that motor on an RC boat, train, etc. Quote Link to comment Share on other sites More sharing options...
Islander Posted February 22, 2012 Author Share Posted February 22, 2012 I was wondering about that, too. No sign of a fuel tank, no piston rings, no head gaskets. Also, I wonder if it's his own design, or is it based on an existing full-sized engine? Quote Link to comment Share on other sites More sharing options...
DizRotus Posted February 22, 2012 Share Posted February 22, 2012 http://www.gizmag.com/spanish-engineer-crafts-the-worlds-smallest-v-12-engine/20636/ “Anyone who appreciates the precision art of engine design ought to get a kick out of this offering from a Spanish engineer named Patelo. Starting with hunks of aluminum, bronze and stainless steel, he spent over 1200 hours designing, milling, turning and drilling what he claims is "probably" the world's smallest V12 engine. Powered by compressed air injection (0.1kg/sq cm), this little marvel boasts a total displacement of 12 cubic centimeters from its twelve 11.3 mm diameter pistons and works like a charm. Best of all, you can see it come together in the detailed video that follows.” Emphasis added. Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted February 22, 2012 Share Posted February 22, 2012 that is very cool. Quote Link to comment Share on other sites More sharing options...
DizRotus Posted February 22, 2012 Share Posted February 22, 2012 This one appears to be smaller. They're both extremely interesting. Quote Link to comment Share on other sites More sharing options...
JJkizak Posted February 23, 2012 Share Posted February 23, 2012 Actual real engines do not use loctite on bolt threads. They use precision machined bosses, machined spacers, no lockwashers, and specified torques. They do use anti sieze compound on bolts into aluminum castings. Loctite will prevent disassembly and snap off the bolt heads. There are also different grades of loctite. I personally use Helicoils on aluminum bolt holes. Aircraft engines use safety wires through the bolt heads. Some engines with aluminum blocks are already Helicoiled from the factory on the mains and rocker studs. He didn't construct a complex oiling system but I wonder how he came up with the geometry of the camshafts and crankshafts. JJK Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted February 23, 2012 Share Posted February 23, 2012 Actual real engines do not use loctite on bolt threads. They do on flywheel bolts. Quote Link to comment Share on other sites More sharing options...
Groomlakearea51 Posted February 23, 2012 Share Posted February 23, 2012 Loctite brand no-seize compounds are used in many race engines (NHRA, etc.). They are designed to "lock", but the compound is brittle and will release on torwue. Heli-coils are a really good idea for aluminum blocks unless studs are used. Even with studs, heli's are often used as an extra prcaustion as aluminum block alloys can become "friable" or lose their temper and become brittle around the threads after repeated heating and cooling (as in running at power). The machining key to proper torque on cylinder heads is that the "bosses" must be perfectly flat and exactly perpendicular to the axis of the both/ stud. Use of precision blanchard ground washers between the bolt head or stud nut is strongly recommended in those applications. Quote Link to comment Share on other sites More sharing options...
runninshine Posted February 23, 2012 Share Posted February 23, 2012 Amazing video, thanks for sharing. I loved the milling of the crankshaft. Quote Link to comment Share on other sites More sharing options...
JJkizak Posted February 23, 2012 Share Posted February 23, 2012 CECAA850: Most of the OEM flywheel/faceplate bolts had those non-removable gougy star lock washers. The Nascar use of Loctite on the flywheel bolts is interesting. Wonder if that was because one bolt came loose because of the wrong torque? Threads stripped? Bolt broke? Cross threaded? Wrong size bolt? Out of spec threads? Flywheel broke? Improper balance and at what rpm? An 8000 RPM power shift on a 454 Chevy does twist t the block for an instant. Machined shoulder bolts on a machined surface just don't come loose, well they are not supposed too but if it was my race car I would probably tac weld them in place. But then again the weld would probably destroy the integrety of the bolt. JJK Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted February 23, 2012 Share Posted February 23, 2012 Most of the OEM flywheel/faceplate bolts had those non-removable gougy star lock washers. I guess that Dodge, Chrysler, Jeep, Ram is in the minority then. I can't speak for other manufacturers but everything we take apart has locktite and no washers. Some of the older stuff had washers however. Quote Link to comment Share on other sites More sharing options...
mike stehr Posted February 23, 2012 Share Posted February 23, 2012 Cool vid. The music is a little enthusiastic for the video, IMO... I like the blown mini V8 video. I thought I had found a webpage regarding the construction of this mini V8, but I can't find it. I couldn't tell ya if it's real...but the butterflies open up, it belches gas out the pipes, and sounds like a little nitro burner. I think those are cooling fans on the back of the engine. Perfect for a Smurf restoring a '63 split-window, but he may need to fab an injection box... Quote Link to comment Share on other sites More sharing options...
DrWho Posted February 23, 2012 Share Posted February 23, 2012 http://www.gizmag.com/spanish-engineer-crafts-the-worlds-smallest-v-12-engine/20636/ “Anyone who appreciates the precision art of engine design ought to get a kick out of this offering from a Spanish engineer named Patelo. Starting with hunks of aluminum, bronze and stainless steel, he spent over 1200 hours designing, milling, turning and drilling what he claims is "probably" the world's smallest V12 engine. Powered by compressed air injection (0.1kg/sq cm), this little marvel boasts a total displacement of 12 cubic centimeters from its twelve 11.3 mm diameter pistons and works like a charm. Best of all, you can see it come together in the detailed video that follows.” Emphasis added. Ah, that would explain the plastic tube then. Thanks for pointing that out. That looks like something that would be fun to do during retirement. Quote Link to comment Share on other sites More sharing options...
runninshine Posted February 23, 2012 Share Posted February 23, 2012 Most of the OEM flywheel/faceplate bolts had those non-removable gougy star lock washers. I guess that Dodge, Chrysler, Jeep, Ram is in the minority then. I can't speak for other manufacturers but everything we take apart has locktite and no washers. Some of the older stuff had washers however. I was a VW tech for many years.......loctite was always used on flywheel bolts. (if anyone cares) Quote Link to comment Share on other sites More sharing options...
JJkizak Posted February 25, 2012 Share Posted February 25, 2012 I'm imagining a Nascar Race like Taladega when a car has a broken flywheel and the race is half over and the mechanics are zipping out the flywheel screws and installing a new flywheel. Do they bother to re-tap the holes to remove the old neversieze so the new bolts will torque properly/ Or do they ram them babies home and get the car back on the track where seconds count. I gotta know. I gotta know. I gotta know. JJK Quote Link to comment Share on other sites More sharing options...
mustang guy Posted February 25, 2012 Share Posted February 25, 2012 and now for something completely different . . . Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted February 25, 2012 Share Posted February 25, 2012 and now for something completely different . . . THAT was funny. Quote Link to comment Share on other sites More sharing options...
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