Author Topic: New Zealand machining company  (Read 283 times)

Online Brian

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New Zealand machining company
« on: 22.02. 2015 03:59 »
While searching for a con rod for another project I came across these guys in New Zealand. They make all sorts of stuff.

If you go to the "about" section on their website it shows them maching a set of new Norton crankcases.

I dont know anything about them, maybe one of our NZ members know more ?

http://trimacmachining.com/index.html

Online KiwiGF

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Re: New Zealand machining company
« Reply #1 on: 22.02. 2015 09:34 »
I'm a kiwi but I have not heard of them but thats probably not surprising, for machining work I use a bloke who operates out of his shed in Upper Hutt, he does work very cheaply and most regard him as a genius  *bright idea* one has to be very patient as he usually has months of work ahead of yours...I think most of the larger NZ cities have one or two guys like him.

John matched my cases and line bored the main bearing, he has done that many times before, the job I gave him that really got him thinking was to mill the barrel bottom face flat, the problem to be solved was obtaining a reference point given he did not machine the head gasket face flat (so it was not 90 deg to the bore) as I had that done by the same company that honed the barrels and they just took an even amount off all round, John worked it out in the end. I have no idea how a barrel could distort or bend  *bash* but he took over 020 off to get it flat !
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Online RichardL

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Re: New Zealand machining company
« Reply #2 on: 22.02. 2015 13:55 »
So, I'm guessing he created some kind of mandrel that went into the bores? Is that a good guess? I don't really know.

Richard L.
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Online muskrat

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Re: New Zealand machining company
« Reply #3 on: 22.02. 2015 19:10 »
Looks impressive. I watched one of those milling machines make a scale model of a car out of a single billet of steel the size of a shoe box. Every little detail, even the wipers. That was back in '98. Billet barrels would be nice.
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Offline morris

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Re: New Zealand machining company
« Reply #4 on: 22.02. 2015 22:31 »
Don't dispair lads. Soon we'll be making our own parts. Good news for those who like to rev it hard *smile*

http://3dprintingindustry.com/2014/09/23/sub-4000-metal-3d-printer/
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Online KiwiGF

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Re: New Zealand machining company
« Reply #5 on: 23.02. 2015 06:26 »
hi Richard, yes John did make an ally mandral up, of diameter to suit one bore of the cylinder and very slightly tapered to suit the bore (which again he had not machined), the mandral bottom face was accurately machined to be 90 deg to the sides and bolted to the mill bed, the barrel located over it, and then he used a the mill to machine all around the profile of the bottom gasket face.

With that job and the matching of the cases my engjne is pretty much "blue printed"   *respect* *beer*
New Zealand

1956 A10 Golden Flash (1st finished project)

1949 B31 rigid “400cc hot rod” (2nd finished project, + favourite bike)

1949 C11 rigid, but why!!! (cos it was cheap)

1937 B21, project missing parts, mission impossible?

GL1800 Goldwing, well, the wife likes it

KTM 950 ADV, cos it’s 100% nuts

1952 Armstrong Siddeley Whitley for rainy days (with wife