compressor motor power

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antique diver
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Joined: Sun Dec 10, 2006 12:50 pm
Location: North-Central Texas

Re: compressor motor power

Fri Jun 04, 2010 9:41 am

Bryan wrote:
rogerrabbitt wrote:Bill
it's fantastic pumping our own air at last,
dawn and i got very drunk last night celebrating our new
found independance,all thanks to you guys for the help.
roger and dawn.



We need a trip to Bulgaria.. Compressor building, diving , drinking! Good times for everyone!


Yeah, and diving with Roger's wooden helmets!

rogerrabbitt
 

Re: compressor motor power

Fri Jun 04, 2010 2:18 pm

well guys here it is
umm it's fibreglass shell
but the neck dam is wood (casting pattern)
i've just found a caster here who can do the whole hat in bronze
so i may well be having talks with him next week
it's been a off and on project for about six years
i did the initial build in portugal then some more in the UK
and now it's taken a spot in our hallway.
lss is scubapro with a dial a breath set-up.
i would like to get this finished this year
work,house and finances permitting.
i've also got a heavily modified kmb mk 18 bandmask
i've been working on
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spectrum
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Location: The Atlantic Northeast (Maine)

Re: compressor motor power

Fri Jun 04, 2010 8:33 pm

The motor by nature is going to have a high starting current. In your application it also has a heavy load. It sounds like the power distribution is marginal and you are probably suffering from voltage drop. The voltage drop will exacerbate the starting challenge of that loaded motor and you probably never get off the starting winding before the circuit trips.

Going to a smaller pulley may gibe it some advantage. If you can add a clutching idler to the drive belt you can get the motor up to speed before applying the load.

Since you seem to be on the correct voltage a boost transformer probably won't help since you seem to be having trouble pulling enough wattage through the line.

Does the motor have a starting capacitor? An old Maytag washer repair trick was to add a capacitor to the starting winding when the motor when it was showing its age. That will boost the phase shift between the windings sets and with that the starting torque.

Pete

Pete
Vintage stuff:
Phoenix RAM # 128
Assorted horse collars
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antique diver
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Joined: Sun Dec 10, 2006 12:50 pm
Location: North-Central Texas

Re: compressor motor power

Sat Jun 05, 2010 8:15 am

Wow Roger, that is way more sophisticated than I imagined. We have seen old diving helmets made from water tanks and even wood (really!), but you will have a beautiful helmet! Keep us posted on your progress.

rogerrabbitt
 

Re: compressor motor power

Sat Jun 05, 2010 12:05 pm

thanks for the positive comments
i must say i'm a lazy git and most of my projects take forever
but i get there in the end,currently putting a pool in the back yard
well it saves a long drive if i get an attack of the "jaques cousteaus"
looking forward to a bit more vintage diving this year.waiting for an old horse collar
to arrive.hopefully post pics of some nice bulgarian dive sites.
this country is very beautifull and very laid back.sometime i'll post the tale of getting my italian tank tested that was an adventure.
again kind regards roger and dawn.

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