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Author Topic: McBob's big banger at 157cc Super Mac  (Read 1309 times)

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Offline Al Smith

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Re: McBob's big banger at 157cc Super Mac
« Reply #10 on: January 11, 2015, 08:12:37 am »
So what does sorted mean in Oz speak? Now if it means some kind of top secret chit you should know by now many of us could figure it out if we really wanted to . ;)
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Offline mcbob

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Re: McBob's big banger at 157cc Super Mac
« Reply #11 on: January 11, 2015, 03:52:53 pm »
Have fun Al
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Offline mcbob

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Re: McBob's big banger at 157cc Super Mac
« Reply #12 on: January 11, 2015, 09:52:04 pm »
Well the basic counter boring for the crankshaft is done



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Offline mcbob

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Re: McBob's big banger at 157cc Super Mac
« Reply #13 on: January 13, 2015, 04:05:52 pm »
Another picky I forgot to add yesterday



McBob
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Offline mcbob

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Re: McBob's big banger at 157cc Super Mac
« Reply #14 on: January 13, 2015, 08:17:13 pm »
Well it's back in the first machine shop 14-1-2014 I visited now to have a recess cut for the crankshaft throws and rod cap stud clearances cut and a slot milled in the base face for access to the rod bolts

Once these are done I can start setting up the cylinder fit as I have allowed an extra 10 mm on the cylinder face so the stroke clearances and sqwish can be set

McBob
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Offline mcbob

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Re: McBob's big banger at 157cc Super Mac
« Reply #15 on: February 01, 2015, 07:55:38 pm »
I know it seems like its taking forever but the machining will be done either today and part of tomorrow, the delay was caused by the needed crankshaft relief that needed cutting into the block for the crankshaft throws all sorted now and may force the issue into making an open class saw if so it will allow me the chance of fitting one of the following intakes and creating a big bore reed valve engine



Here I could setup for dual BDC's of 35mm or



one of two other manifolds in V-12 configuration





McBob
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Offline Cut4fun .

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Re: McBob's big banger at 157cc Super Mac
« Reply #16 on: February 07, 2015, 08:54:47 am »
Nice pics
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Offline mcbob

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Re: McBob's big banger at 157cc Super Mac
« Reply #17 on: February 07, 2015, 03:37:19 pm »
Gee I'm kinda glad I'm not in a rush bloody machine shops .......... I know its a freebie but believe me I did offer to pay and would have
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Offline mcbob

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Re: McBob's big banger at 157cc Super Mac
« Reply #18 on: March 01, 2015, 09:16:51 pm »
Well the sadness has subsided its on the move again just getting the cylinder decked and the counter bore for the cylinder skirt ... all the holes to mount the oil tank cylinder and points / side cover drilled and tapped





God bless their cotton picking socks I'm as happy as a little pig in ****

McBob
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Offline mcbob

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Re: McBob's big banger at 157cc Super Mac
« Reply #19 on: March 12, 2015, 08:19:00 pm »
Well the happiness continues block all but done except for the counter boring for the cylinder and hopefully that will be done this week coming

McBob
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