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| Author |
Message |
    
Rob Cook
Visitor
| | Posted on Wednesday, March 16, 2011 - 06:25 pm: | 
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I have come across a large single cylinder Chapman (Blaxland?) engine that has a brass plate describing it as a "Chapman Model KV 6 HP".
Same red paint as the smaller Blaxlands and basic components show the same design.
This engine runs and i have an option to purchase it (if my wife doesn't kill me first). Any ideas about the engine and a reaslistic purchase price?
Rob |
Andrew Munns
Member
Username: johnoxley
Post Number: 19
Registered: 04-2010
| | Posted on Wednesday, March 16, 2011 - 08:49 pm: |
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If you are going to put it in a boat, it will need to be a bigger heavier boat that can absorb the vibration of this larger unit... Will this affect your final decision?? |
neil r jones
Senior Member
Username: senojn
Post Number: 73
Registered: 08-2006
| | Posted on Wednesday, March 16, 2011 - 09:33 pm: |
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Hello Rob ,
Is there any chance of a few photos of this motor to ennable us to shed more light .
Regards
Neil |
Laurie Derwent
Senior Member
Username: laurie_d
Post Number: 92
Registered: 10-2009
| | Posted on Wednesday, March 16, 2011 - 09:34 pm: |
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I have not experienced these motors in a boat. I understand they are known as the 'Super Pup' and I'm sure someone will correct me if I'm wrong. However, from my experience with small petrol and diesel motors the petrol motors have less vibration than the diesels. The flywheel is also fairly large by modern standards (if not as heavy as the very old motors)and tends to take out a lot of the vibration remembering that the Blaxland is only running at a max of around 1000rpm under load (again correct me if I'm wrong). I'd suggest that anything from 14' or 15' upwards would be fine.
Rob, it's hard to suggest a price as few of these motors seem to change hands. I think the formula used to decide these things is:
Take the price of a comparable new motor, deduct 15% compounding depreciation per year (or decade for older motors), add X% (where x represents your interest in that particular motor), deduct 0.25% for the trials and tribulations of transporting and fitting the motor to a boat that has had a differnet type of motor (i.e. it looks very easy but when things don't line up, the engine mounts have to be changed entirely etc it takes time and $ but we ignore these things when we really want that motor) divide the result by the 'wife factor' (this can be useful when determining the real price paid v the price you tell the wife).
The final figure will, as you will tell your friends, be 'a bargain'. |
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