| Alan, For the price, I consider the Minn-Kotas to be disposable units. That said, many of the units are sold with reversing circuits,so the company must consider them viable for light duty, at least. Mine are replaceable in the water or out and carrying spares is a couple of hundred bucks--not much for peace of mind. Vance -----Original Message----- From: alanjames@xtra.co.nz To: personal_submersibles Sent: Tue, May 3, 2011 4:43 pm Subject: [PSUBS-MAILIST] electric motor bearings Hi,
I asked the question a while back as to whether the
minnkota motors had any
thrust bearings in reverse.
The answer seems to be "NO".
Here is a spare parts link that shows motors with
only a circlip wich spins against washers
when the motor is in reverse.
I guess this would be an argument for oil
compensating rather than air compensation or good shaft seals,
if you were intending to run the engine in
reverse.
So if you had a motor that has an 80 lb thrust, it
would be like spinning an 80 lb weight at X amount of revs
on a couple of dry washers.
I would appreciate any comment if I've got it wrong
or it's not an issue.
Thanks, Alan.
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