New Build (raw engine)

Egor · #1 12-19-2008, 01:23 AM

I started a new build for a friend, (I love to build these things) using a cruiser frame so the motor needs a front mount. I have to invent one! I will keep you posted on the build. I am trying to get the owner to join our group and follow along. Have fun, Dave

PS: A few pics. Do you think the motor mount will work?

Creative Engineering · #2 12-19-2008, 07:42 AM

Egor,

That's not going to fly! Danger Will Robinson.

The concept could be made to work...I'm going to do up something in CAD real quick so that you can buy off-the-shelf items to make this work. Give me an hour and i'll post back.

Jim

Creative Engineering · #3 12-19-2008, 08:46 AM

Egor,

This will work!

Form the bracket as shown...you can use a piece of pipe that is close to the frame size as a mandrel.

I think you can get automotive type muffler clamps as small as 1 1/4"...If not use a cable clamp, Home depot etc. has them.

You'll have to fuss around with it a bit to get it just right, but it will be strong.

Don't worry about forming it perfectly to the frame, just get it close. The clamps will draw it up the rest of the way.

You can use rubber sheet, home depot, between the bracket and frame if you need to correct the spacing.

Have fun,

Jim

Creative Engineering · #4 12-19-2008, 08:49 AM

P.S. while you're at the hardware store, get 2 M6 X 1.0 grade 8 allens to mount the engine.

Jim

hill climber · #5 12-19-2008, 11:28 AM

jim,
wish i lived i florida, i could haang out wit you all the time. great idea, and you could teach a guy a few things. good to have you here.

Egor · #6 12-19-2008, 01:01 PM

I love CAD. Thanks for the help. I am trying an experiment to see if I can isolate the vibrations transmitted into the frame, so far the mount is solid. I got the idea from my Whizzer, I will keep you posted. Have fun Dave

TexasDav · #7 12-19-2008, 01:16 PM

Nice drawing! Good idea, I wish I had asked you before I made mine out of epoxy, It works but not as well as your idea would have.

MyPC8MyBrain · #8 12-19-2008, 02:24 PM

I did something similar to that mount, only I popped in a couple 1/4 20 nutserts into the frame instead of using the water bottle mounts. Pretty solid, but then again I used 1/8 steel stock and bolted to the frame about 1"-2" above the motor mount.

I like those nutserts. They work for a lot of things and are pretty cheap. My frame may snap in half from drilling holes, but I don't think so. I've got several hundred miles on this one with no sign of fatigue.

ebmvegan · #9 12-19-2008, 02:35 PM

Jim,
Your illustration will help many. Thank you.

Creative Engineering · #10 12-19-2008, 08:34 PM

Quote:

Originally Posted by Egor

I love CAD. Thanks for the help. I am trying an experiment to see if I can isolate the vibrations transmitted into the frame, so far the mount is solid. I got the idea from my Whizzer, I will keep you posted. Have fun Dave

What is that white material? It's hard to tell for sure from the photos but it loks like 18Ga. no more than 16 that has been fastened to the frame with self tapping screws?

I've got to know how this will reduce vibration if the rear is mounted firmly to the frame?

I realize you have a Whizzer to use as an engineering comparison, but I'm not getting it. I couldn't find good enough pictures of the Whizzer set-up to say for sure, but it looks thier front mount floats?

Jim