Motor support racks

[Chuck4741444]

Im needing to build a rach to hold (2) johnson 150 and (1) 200. How wide and how far apart should the wheels be to support these three motors

 

[roscoe]

Depends what you are building the rack out of.
A welded steel rack, may only need a wheel in each corner.
Something out of 2x6's on end, maybe 6 wheels.
Something out of 2x4's, gonna need a lot of support.

Why one rack instead of 3 separate racks???

 

[Mc Tool]

Im needing to build a rach to hold (2) johnson 150 and (1) 200. How wide and how far apart should the wheels be to support these three motors

As wide as you need to fit the 3 motors ,I mean its not like they are going to fall over sideways with the 3 side by side on the same rack.
And yeah , why one rack for all three ? Make them harder to move and need a bigger single area .

 

[Scott Danforth]

with wheels, the rack has to be big enough in both directions to keep the load from falling over when you move it and hit a crack, or a pebble, or a change in elevation.

if this is for storage, use the cherry picker, pick the motor up and move it over to the rack.

 

[Bugzilla46310]

If the combined center of gravity stay within the perimeter of the base, an item will not fall over.

 

[dwco5051]

If the combined center of gravity stay within the perimeter of the base, an item will not fall over.

Don't even have to figure metacentric heights, righting moments, etc.

 

[Scott Danforth]

If the combined center of gravity stay within the perimeter of the base, an item will not fall over.

As long as it doesn't move. Once it moves (wheels), you have to take velocity and mass into it to see if coming to an instant stop topples it over (tipping moments)

Having 1500# of motor and rack moving will require a much wider base to ensure it doesn't tip as compared to a static rack

No difference than rolling a fully dressed big block on a cherry picker and hitting a pebble in the driveway..... There will be tears and blood and possible broken bones and words that make Navy men cringe

It's a little more involved than just a bit wider than the combined CG

 

[dwco5051]

As long as it doesn't move. Once it moves (wheels), you have to take velocity and mass into it to see if coming to an instant stop topples it over (tipping moments)

Having 1500# of motor and rack moving will require a much wider base to ensure it doesn't tip as compared to a static rack

No difference than rolling a fully dressed big block on a cherry picker and hitting a pebble in the driveway..... There will be tears and blood and possible broken bones and words that make Navy men cringe

It's a little more involved than just a bit wider than the combined CG

Now you have advanced from statics to dynamics and the math has got harder by a function of 3. I remember years ago in the Navy being able to figure moments of inertia for flooded compartments out from the center line with y K&E slide rule. No way today, I have 3 pairs of reading glasses in the house and still can't find a pair when I need them.

 

[Scott Danforth]

Now you have advanced from statics to dynamics

An object in motion wants to stay in motion

Have seen too many loads tip not to be cautious. And no, I do not recommend a 3 motor cart with wheels