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| Another Paddleducks build log |
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| bogstandard:
By making this engine Tim, it will shorten your learning curve by copious amounts, because you are using techniques not normally encountered by someone fairly new to machining. You are finding that the techniques have no fear in them, when you actually get shown how to do it. There is no black magic about it, just logical thinking. After this, you will be able to tackle a lot more complex items without having any fears about the operations needed. Bogs |
| CrewCab:
--- Quote from: spuddevans on October 10, 2009, 01:24:32 PM --- oh well, everybody has to learn --- End quote --- Tim, don't fret, that's why we are all here :thumbup: --- Quote from: spuddevans on October 10, 2009, 01:24:32 PM ---there have been some frustrating moments that make you want to chew your own foot off, all in all I am absolutely loving this!! And being able to share it all with the rest of the forum and benefit from the collective wisdom and advice is great too. --- End quote --- Same answer as above :beer: If it wasn't fun .............. why bother :dremel: CC |
| Stefan Pynappels:
I have to say Tim is a lot calmer in the face of (drill bit) adversity than I would be, he just gets on and thinks of a fix. And don't be fooled by the modesty, he has a much more technical and analytical head on his shoulders than he gives himself credit for. I reckon he is a natural engineer... |
| spuddevans:
--- Quote from: spynappels on October 11, 2009, 03:32:27 AM ---I have to say Tim is a lot calmer in the face of (drill bit) adversity than I would be, he just gets on and thinks of a fix. --- End quote --- Dont believe a word of it!! Underneath all this dirt, grease, oil and swarf there is something else...... More dirt!!! :lol: But underneath that there beats a heart of a little wannabe model engineer. :dremel: Anyway, now that my head has swelled enough for this year, having some time off the mundane drudgery work I got a little more progress made this morning, starting with the blocks. I started out by cutting off a chunk off the same 4mm thick sheet (well, hardly a sheet, more like half a hankichief) of brass that I made the eccentric straps from. and then mounted it the mill-vice to make the cut edge flat and parallel. Then after a little cutting to size and milling I ended up with these Then after a little drilling they were done, here they are in place ready for silver soldering. ( I plan on doing a few practice joints before attempting to SS any of the parts for the engine, just to be on the safe side.) Just on the subject of Silver Soldering, and especially to those who have built the Paddleducks engine, how did you stop the silver solder from blocking up the oil hole on the eccentric straps? The oil hole is only about 1mm from the soldered joint for the con rod. Any hints or tips? Anyway, getting back to the build. After this I had a bit more time, so I made a start on the Forks ( "use the forks, Luke" (said in best Obi-Wan impression) :lol: ) Not having any 6mm square brass stock I sliced off a 8mm chunk of the 19mm square bar I have, flycut it on both sides to 6mm thick, then cut it down and milled it to 11mm on one side, then cut the other side ( the remaining 19mm side ) down and milled it to give me 2, 6mm x 6mm x 11mm blocks for the forks. So next time I will be drilling, tapping and milling the forks into shape, then it'll be on to the valve packing glands ( which I already have made the nuts for thanks to Kvom :thumbup: :thumbup: for telling me that they were the same as the piston packing gland nuts, so I made extra when I made them.) Tim |
| Darren:
Tim just caught up on your progress, had a quick flick through all the posts .... !!! Coming on well .. :clap: Regarding all the snapped drill bits .... I too have been exactly there with the same parts :doh: Did you use plate brass by any chance? Alli bronze .... I could not drill that stuff for the want of trying , snap, snap, snap, and so on about 10 drill bits in all. Then I used a bit of free machining brass ................ no problemo .... |
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