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Message |
    
Ian
Member
Username: the_bigfella
Post Number: 10
Registered: 10-2008
| | Posted on Wednesday, November 05, 2008 - 07:45 am: | 
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I recently bought my first, second and third Aussie marine two strokes. The first was a Penguin twin that came with a boat - but its too big for the boat - so I'll put it aside for the moment.
The second was a Blaxland Pup (advertised in the Old Machinery mag) - and the third, just for the fun of it was the seized Master Pup on ebay today - for spare parts / possible restoration.
I've picked up the Penguin, Blaxland & Lucas magneto "manuals" from Old Rally Badges too.
BUT - there is a real dearth of published info on these engines. Dimensions, etc. I rebuilt a BMW motorsport (M5) engine a couple of years ago - something supposedly the domain of super-trained factory technicians - but with the info I could source off the web - nothing was too hard and that engine is as good as the day it left the factory.
Blaxlands, however.... specs? Yer kidding.
I pulled down the Pup today - because it has some severe corrosion on the water pump eccentric. My engineer mate will whack it in the lathe and we will sleeve the eccentric - probably with a bit of stainless. He'll obviously work backwards from the two pieces we have - the water pump bearing and the corroded eccentric - but it really would be nice to just look it up and go ahh 2 1/8" or whatever it is....
He said to me today "while we've got it apart, I'll draw up the crank in case we ever need to make one"
Which brings me to the point of the thread. Does anyone have any of the dimensions / specs - so that we can put them up here for the benefit of all?
Obviously - if people are making a living from having proprietary information - I can understand them not doing it - but ... anyone else got any data sheets? |
Ian
Member
Username: the_bigfella
Post Number: 12
Registered: 10-2008
| | Posted on Saturday, November 08, 2008 - 01:34 am: |
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Here's the engine housing
and the problem eccentric - with obvious rust.
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Bruce Findlay
Advanced Member
Username: bruce_findlay
Post Number: 47
Registered: 03-2006
| | Posted on Saturday, November 08, 2008 - 01:51 am: |
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Ian, I can't answer your question in regard to dimensions, indeed I would like to know myself. Just out of interest, how has the engine housing been finished? It looks from the photo that it has been electroplated. Bruce. |
Ian
Member
Username: the_bigfella
Post Number: 13
Registered: 10-2008
| | Posted on Saturday, November 08, 2008 - 02:09 am: |
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Bruce - the engine housing is solid bronze - apparently they only made 20 in bronze - back in the 1930's. The electroplated look is just the lacquer on the polished bronze and the flash on the camera. Next time I take the housing off the base I'll take some shots up her skirt - it is very impressive!
The original Wright Bros Flyer aircraft engine had bronze cylinders too - and replica castings are available. Bronze handles extreme temps better than cast iron apparently. |
Garry Edwards
Member
Username: garry_edwards
Post Number: 11
Registered: 03-2005
| | Posted on Monday, November 10, 2008 - 12:35 am: |
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Ian, send me your email address and I will forward some info to you. |
Ian
Member
Username: the_bigfella
Post Number: 14
Registered: 10-2008
| | Posted on Monday, November 10, 2008 - 01:02 am: |
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email sent.
Thanks Garry |
