MadModder
Gallery, Projects and General => Project Logs => Topic started by: doubleboost on July 22, 2012, 05:16:39 PM
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Hi
Lads
Made a start machining the engine base cast yesterday
I cant do much untill i get the cylinder cast & machined
This bit was just plain hard work ,eventually i had a nice flat face to work from
(http://i261.photobucket.com/albums/ii63/john970s0/P7220002.jpg)
(http://i261.photobucket.com/albums/ii63/john970s0/P7220004.jpg)
It is a decent size when you see it on the mill:slaphead::slaphead:
(http://i261.photobucket.com/albums/ii63/john970s0/P7220006.jpg)
(http://i261.photobucket.com/albums/ii63/john970s0/P7220016.jpg)
(http://i261.photobucket.com/albums/ii63/john970s0/P7220028.jpg)
(http://i261.photobucket.com/albums/ii63/john970s0/P7220021.jpg)
John
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It just fits on the 626 MILL John :lol: :lol: :lol:
Rob
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yep he got the lenth right
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Jesus ... it's a monster! :bugeye:
Are you just machining things to fit around this as you go then John?
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Very nice, but I have to ask, how big is this monster :lol: :lol: :lol:
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Jesus ... it's a monster! :bugeye:
Are you just machining things to fit around this as you go then John?
I have modified the patern i used for the marine engine once i have a cylinder things will just start to appear
John
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:jaw:
That thing is a monster!
Eric
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Sure is a big un :clap:
:beer:
DaveH
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Hi
Lads
Not much progress to report
I was hoping to get the cylinder cast today
I painted the modified patern yesterday and the paint reacted (it looked like it had the pox)
Paint stripper and start again is the only way
(http://i261.photobucket.com/albums/ii63/john970s0/IMG_3905.jpg)
(http://i261.photobucket.com/albums/ii63/john970s0/IMG_3904.jpg)
(http://i261.photobucket.com/albums/ii63/john970s0/IMG_3900.jpg)
(http://i261.photobucket.com/albums/ii63/john970s0/IMG_3898.jpg)
(http://i261.photobucket.com/albums/ii63/john970s0/IMG_3906.jpg)
John
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By 'ek John!
That's just a bit awesome...... :bugeye:
Good luck with the build! :thumbup:
David D
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Didnt realise the size of it John, Now you have put in perspective :bugeye: wow
John
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well pefecshon can not be rusht john keep it up
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John
Are you going to pour the cylinder in brass? That is a first class act. Looking good.
Nelson C
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Hi John , looking good :clap: :thumbup: :clap: :thumbup: , dont know how but just noticed the posts now , will be watching as you go.
:beer: Mick.
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John
What happened to the Big Mill Engine? Looks like you staled out. How come.
Nelson Collar
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Too busy, making videos? :thumbup:
David D
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Will be interesting to see how big you can get the flywheel machined ?
Jeff
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How many pounds of aluminium goes into that thing? Or Volume.. didnt know you hade the capacity for such big pours. =)
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Will be interesting to see how big you can get the flywheel machined ?
Jeff
Should be able to machine quite a large flywheel horizontally on his 626 vertical mill with ingenuity - could even mount an outrigger for the hub to increase maximum diameter. (That's actually an advantage of the Bridgeport style in that you can swing the ram and head a long way left or right for this sort of thing)
Andrew
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You can also just make up a temporary "lathe" for something like that. A couple of pillow blocks for an arbor, etc.
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You can also just make up a temporary "lathe" for something like that. A couple of pillow blocks for an arbor, etc.
I've done stuff like this for wood but how would you go about the toolrest for metal?
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The base casting is just "maturing" I will get to it one day
John
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You can also just make up a temporary "lathe" for something like that. A couple of pillow blocks for an arbor, etc.
I've done stuff like this for wood but how would you go about the toolrest for metal?
Steve, two possibilities.
1.) A simple woodturning style tool rest and a hand graver -- this is how the original metal lathes worked, and for something like a flywheel, I think it would be quite workable -- particularly for aluminum, which I'm guessing would be cast for this engine.
2.) I could easily temporarily remove the cross slide from my Gingery lathe and run it onto a bar of cold rolled steel as ways -- since that's what the ways are composed of in the first place.
It may be possible to do the same thing by removing the cross slide from another type lathe fastening it down on the temporary setup, and just using the top slide for motion. The range of motion needed to finish the rim of a flywheel is quite small, and this is a one time job, equivalent to faceplate work, so a little ingenuity would see it accomplished with minimal materials, I think.
Probably my first choice would be # 1 above, as a flywheel rim isn't required to fit anything, but must only be made concentric to the bore and smooth.
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Picture is as good as a thousand words
(http://www.blackcountrysteam.co.uk/images/steve_ws/SW586.jpg)
(http://www.blackcountrysteam.co.uk/images/steve_ws/SW587.jpg)
J
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Picture is as good as a thousand words
J
So true! :bugeye:
What a crackin' setup! For a "bodge job". :clap: :clap:
Takes me back to my early days, with my oppo, Harry. Together, we were devastating........ :thumbup:
David D
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Steve, two possibilities.
Ah, thanks. I was thinking of using it to clean up cast banjo rims which wouldn't have to be extremely accurate. Might see if I can luck out on a cheap drill press at this weekends car boot sale (if they're still running it. It's getting late in the year). Seems like a drill press would be a good start for a wood lathe.