09 Electric Varadero motor mount holes

[SirTragain]

Im not criticizing; I also wish to give helpful input too others doing DIY instead of paying a machine shop.

The internet is a great tool for understanding geometry, so is making a template which you later did but could have been off center the way you did it and the aid of a Bow Compass and a Protractor are helpful but not necessarily required. The 40mm hole should have been your last step.

[SirTragain]

A piece of paper board (Pizza Box) makes for a great template and is easy to handle. The quick and dirty cheat is to cut a cross hair (Plus Sign) through it and slide it over the shaft of the motor then use a nail and poke the holes were your bolts go.

[SirTragain]

If you measure the distance between two opposing motor mounting bolt holes you would have their diameter apart, divide that number in half for its radius which would also be the center of the motors shaft. By using a Bow Compass you could have drawn the circumferences (Circles) of both your center shaft and plotted the cross point for the bolts.

[SirTragain]

Think of a Donut; the inner edge being the 40mm hole you want for your shaft and the out edge would be where your bolt holes would fall. By drawing a cross hair (North to South and East to West) at the shafts center point location you will get corresponding 0, 90, 180 and 270 degrees points going clockwise.

Pivoting at the center mark for your shaft using the compass would have given you proper motor alignment intersecting at the outer circles edge with the trailing ends of your cross hair.

[SirTragain]

As was stated these tools are not necessarily required; a straight edged ruler works fine it just takes a few different steps and some extra math.

Now for a nice easy trick: Take a piece of wood and two pencils. Drill two holes the thickness of the pencils in the wood that are the radii distance you desire. Stick the pencils in to the wood with their points facing the same direction. Next use one of the pencils as your fulcrum (Pivot Point) and draw your circle Instant Compass

[SirTragain]

I use to do this with an old flat wooden school ruler; it was quick because it already had the measurement marks on it and yes I took mechanical drafting and made blueprints but Im a retired mechanic now. Sorry for it being so long but hope it is helpful to others.

[AlamoCityCello]

Are you really trying to help people, or just showing off ur toys?

[evmotorcycle]

Well, that is for you to decide! It is my choice to take the time to put this information into the public domain to show what is possible with a little creativity and motivation.

[dromseciba74]

Very nice work....I'm watching with intrest in your progress.....(wassup Frodus17 funny seeing you here LOL) Keep up the good work...it'll payoff

[frodus17]

yeah, I am pretty knee deep in the EM stuff eh?

[frodus17]

when you mount the motor, Try and isolate it so that its not bolted to the frame....It'l be more noisy. If you can, try and support with some very strong rubber engine mounts. I put 2 on the top of my mount, and have a Delrin shaft mount on the bottom. It floats freely front to back, but not side to side. That mount is looking great... nice machinework.

[evmotorcycle]

Good thinking man! I will look at getting rubbers for the mount. Makes perfect sense.

[tgamber]

Good work! I also used a hole saw to drill the holes required for my front and rear motor mounts...

[beppino1985]

italy wach you

[coreymon77]

good stuff