7 replies to this topic

[Revtor]

Hey guys, I'm laying out some parts in CAD, and don't have a loose motor here to measure from.. Does anyone know or have the prints for a typical motor mounting hole pattern?  Screw hole size, spacing and center hole size.  Typical sealed/Hawk style motor..  I'll take one out from a car, but figured I'd ask here first.  Perhaps someone has the info or link to a print. .?

 

Will of course share my project here once I have something to share!

 

Thanks in advance.

[old & gray]

I'm uncertain of the provenance of this.

 

 

 

[Revtor]

Perfecto!!

Its a start at least Ill double check it before anything moved forward

[Bill from NH]

Steve, that drawing came from Mabuchi. They have made millions of these motors over the years. It won't need and double-checking,    

 

I like to think in inches & fractions there of. I mark the center of where I want the bearing/ bushing hole & drill it out to 1/4". I also mark 1/4" .left & right from the bearing/bushing hole center. These two marks are the center or your horizontal motor mounting screws. I drill these two marks 3/32". The three holes are several thousands larger than the metric dimensions  shown above. But some people will like to use 2-56 machine screws rather than M2.0 metric screws for mounting the motor. The 2-56 screw requires a larger clearance hole than the M2.0/ I would suggest you make a motor mounting template from clear plastic using either the metric dimensions, those i gave in inches. or try both to see what you like. An ultra fine Sharpie or other permanent marker is good for marking the hole centers.

[Revtor]

Bill, I'm not as well versed in the world of Mabuchi as some..   It does make 1000% sense that the fk/hawk/etc motors are clones of one of the most prolific patterns made.  Ill bet on that.

 

But still, I'll layout according to the numbers above then do a print out and give a visual check.  that should get me there.

 

This is for a summercamp STEM workshop idea that hopefully I can pull off this summer. . .

~Steve

[Ramcatlarry]

and vertical hole pattern will follow that the lower center hole can be mirrored on the upper part of the pattern.  Screw sizes used are either 2mm or #4-40..either way at least a 3/32" clearance for either screw.

[Revtor]

👍 rcLarry

[Alchemist]

Hi Steve,

 

 

 

This is for a summercamp STEM workshop idea that hopefully I can pull off this summer. . .

 

Sounds like fun - please let us know how it goes!

 

Ernie