[Attachment(s) from John Raynes included below]
OK John
Here is a picture of my motor bracket.
John
On Sun, Jan 16, 2011 at 6:41 AM, John Green <v_2jgree@operamail.com> wrote:
Hi, John,
Any pics that you have would be interesting to see. I am always impressed with pics of electric drives because everything is generally so clean and easy to see. Not so with (used) ICE motors.
My own thinking is to start with a plate, and have maybe two right angled triangles made up of angle iron, that bolt to the 4 bed mounts and to the plate. This will triangulate the support. The hypotenuse angle piece would be removable for access. My actual design as such would be dependent upon the motor(s) and belt arrangement, as I would want belt drives. In my case, I am expecting the electric to be used more for docking only, so it might turn out that I use quite low powered motors, and might have to reduce the gearing on them, and belts are an obvious easy way to do this.
The interesting thing is that it can probably be quite lightly built, if it is considered how overpowered a regular ICE installation seems to be.
George, I asked the same question a while back about the bearing. The example given by a group member, I forget who, was for a flanged industrial style bearing, I believe it was self-centering, with a bore to match the prop shaft diameter. I believe from memory that the specific example given was for one that had some kind of rust resistance, I forget whether it was stainless parts, or plastic coating. My interest at the time was whether the bearing used had thrust capability, like, was it specifically designed for large thrust loads, and the example given was just a regular ball bearing, with nothing added for thrust. What I am trying to convey is that from what I gathered, although obviously the bearing is of critical importance, it is in practice nothing extra-special, just a regular industrial 2, 3, or 4 bolt flange cast iron body self-centering ballrace type bearing, if the rust proof part is ignored.
This actually makes sense when you think of a Minnkota electric outboard having 30 pounds or so of thrust, and being able to move relatively large boats. Most of the load is going to be radial, (due to turning torque loads) just as is the case with an industrial conveyor belt roller. My only concern would be to add a means of greasing after every use, and collection of old expelled grease.
The rust resistance can be easily obtained by selecting a bearing used in the food processing industry, where hosing down is a regular requirement. Either way, these are not 'retail' items, nor are they 'marine' items, so the prices should be fair.
John
Re: Re -Main mounting plate needs.
Posted by: "John Raynes" johncraynes@gmail.com eboatdrives
Date: Sat Jan 15, 2011 6:04 am ((PST))
John,
FYI, I installed a flange thrust bearing attached to a plate and secured to
both sides of the engine beds allowing the motor the single job of turing
the propellor shaft. I can send a picture if you like.
John Raynes
On Sat, Jan 15, 2011 at 8:44 AM, John Green <v_2jgree@operamail.com> wrote:
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Attachment(s) from John Raynes
1 of 1 File(s)
MARKETPLACE
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