Bowman Magnet Motor Open Sourcing Project

Status: Project commenced Dec. 2003 with claim to a working device, which later, after three months, ended up running down due to demagnetization. No replications were accomplished though several were attempted.

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Energy > Inexhaustible > Magnetic Motors > Bowman > Open Sourcing > Instructions > Specs > Bearings

Bearings Considerations

TO DO: We need to distill this info down into something that can be presented concisely on the specs page.

From: Andy Pears

To: PES_BMM@yahoogroups.com

Sent: Saturday, January 10, 2004 8:26 AM

Subject: [PES_BMM] Re: Bearing Specs

Hi all, As reduced friction is a high priority in the motor, may I suggest using the highest ABEC rating possible. I'm a semi pro-inline skater and I use a minimum of ABEC 9 bearings due to cost. There is a very significant difference between high and low ABEC ratings. A rule of thumb is the higher the rating the better but at a cost to being more vulnerable to wear and damage through contamination. I would personally; use fluid bearings once the exact replications have been built and verified. A further modification could be the introduction of shielded magnetic bearings; these could be manufactured so not to interfere with the drive magnets in the wheels. just my thoughts, Andy Pears.

From: Mark

To: PES_BMM@yahoogroups.com

Sent: Saturday, January 10, 2004 8:54 AM

Subject: RE: [PES_BMM] Re: Bearing Specs

And there are also air bearings... at a high price.

From: kenh2k@aol.com

To: PES_BMM@yahoogroups.com

Sent: Saturday, January 10, 2004 11:54 PM

Subject: Re: [PES_BMM] Bearing Specs

Regarding bearings...For this application (in prototype stage) the best choice is ball bearings without seals. This provides the most freewheeling spin. Seals generally cause some friction. I am getting bearings with seals and I will actually remove the seals and the thick grease to get the best unrestricted spin. Obviously in a production model we would need to seal the bearings. Good source for prototype bearings is W. M. Berg (USA) but expensive in low quantity.

Ken Hegemann

Page posted by Sterling D. Allan, Jan. 10, 2004
Last updated January 11, 2004