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| a nine cylinder radial engine, plans by "ageless engines" |
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| crankshafter:
Hi Jack Only one thing to say: I'm not surprised :clap: :thumbup: Regards Crankshafter |
| Bernd:
Very nice Jack. :ddb: I'm impressed with your mas production work there with them rods. Nice job. :thumbup: Bernd |
| Rob.Wilson:
Hi M.J Just read through this post from the beginning ,,,,,,,great read :clap: :clap: :clap: outstanding workmanship :bow: :bow: :bow: , one day i will grow some balls and have ago at an aero engine :lol: Regards Rob |
| madjackghengis:
To all my friends and onlookers, sometimes work seems to insist on inserting its self into the day, and interfere with important things like model engineering. I have this frame I'm making, which needs some machine work to match up the pieces for welding, especially where the backbone meets the front main tubes, so I measured the angle, clamped the main frame tubes to a tilting table, and set up the boring head to bore at the right angle, to the size of the backbone the angle plate setup with the main frame tubes clamped to it setting up the boring head. guestimating the diameter touching off the cutter at the tube, rotating the boring head 180, and putting a rule between the touch-off point, and the cutter tip taking the first cuts and adjusting positioning for proper centering more cuts, everything in good position now. main tubes finished, testing the fit with frame in a jig nice tight fit, no unseamly gaps, looks good view from the front looks good too. with the backbone in the vise, set at the right angle, preparing to fish-mouth the end to fit closely to the seatpost tube boring done, everything aligned ready to fit on the frame with the just cut end sitting on a C clamp, a perfect fit on the seat post tube checking to ensure the fit is still good with main frame tubes, after second operation, everything is just right. Now, back to the important things. the parts for the oil pump, steel drive gear, two brass driven gears, and two pair of smaller gears to pump the oil in, and then collect it and pump it back out. The plans call for the aluminum blank to be turned round, the machine work done, and then the pump cut out to its proper shape when all the details have been machined. I didn't want to waste a perfectly good piece of stock so the piece I'm using will be less than round, but have all the area where details are machined in, just pretend its round when you see it in the chuck and later in the mill vise. the blank, mostly octagonal centering the blank with a rod and an indicator first side faced and turned down to 3.374, drilling before boring to a tight fit on the main bearing first cuts boring to fit the main bearing more boring final cut, blank flipped and centered, o.d. turned to match first side at 3.374 second side, ready to be faced down to final thickness of .468 blank set up in the mill vise with parallels which are removed, for drilling and tapping mounting holes for the rear main bearing rear main bearing bolted in place for line drilling and reaming oil pump shaft holes through bearing and pump body each of four holes is center drilled, drilled and reamed to ensure accuracy reaming through the main bearing and the pump body to ensure alignment pre-boring one of the gear cavities with an end mill another cavity pre-bored. final fit will be half a thousandth over the gear size finish boring the scavenge pump gear cavity finish boring one of the pressure pump gear cavities finish boring the second pressure pump gear cavity rear main bearing with all the oil pump shaft holes line reamed in place. what is left is drilling the pump body for its passages, cutting it to profile, drilling the crankcase with the main bearing and pump in place to fit the pump to the crankcase and ensure free movement of the oil. |
| Rob.Wilson:
Hi MJ What's the frame for ? how dose the head stock fit to it ? is them Suzuki rims you have there ? Those are well fitting joints ,, you will get a nice clean weld on em :thumbup: The oil pump is looking great :bow: :bow: :bow: :bow: :bow: Regards Rob |
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