New Hub for Lawn Edger- Metalworking

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I work at the scrap metal drive at our church and also shop there for repairable items. This year it was a Legend Force 9" 46cc 4-stroke lawn edger. It had a really nice little motor on it and I got it running right away. But when I kicked in the clutch, it made this horrible noise and quit.
I took the covers off the  drive housing and this is what I found:

This is what is left of the bearing housing. It was literally melted  from the friction and the person must have  tried to use it while making a horrible noise for quite awhile. The retainer screws that held the bearing retainer were dangling out into the air. I found that Legend Force is like Worx products...no repair parts available at all and no diagrams. So I had to recreate the position of the parts and make a hub to load the bearings, pulley and clutch drum into. I first made one out of wood and found I needed to make a few dimensional changes before turning the aluminum one. The hub is made from two pieces with the smaller one screwed and doweled to the bigger one. The clutch drum was a little loose on the shaft and it had 2 small cracks at the center , so I brazed up the center  of the drum to fix both problems. The 2 screw that held the bearing retainer had to be put into the housing and then the shaft had to be pressed into the bearings. In order to press the bearing on the shaft first, I drilled  two holes in the clutch drum so I could put the  retainer screws in after it was all assembled. Much easier assembly.


I got this all done and mounted in the edger and then went to install the belt. This belt was so short, there was no way it was going over  that pulley. I can't imaging how it was assembled in the first place because all the centers are the same as original.

I looked every where and called all the belt suppliers I ever used and no one had small 3/8" serpentine belts but then a friend told me about Motion Industries and the guy there did  not have any but did some research and found 2. One was 3/8" longer and the other one was   over 1 1/2" longer. So I bought the 3/8" longer one and thought I could force it on. NO WAY would it go on. I could not find a belt to fit those centers...so I changed the centers. I relocated the spindle for the blade 7/16" closer to the drive pulley and the belt went on easily and it cuts really good. I did not have the camera in the barn for the new hole locations and the new clearance in the mounting plate.



Cheers, Jim




Cheers, Jim ........................ Variety is the spice of life...............Learn something new every day

14 Comments

damn jim , what cant you do ? 😁

working with my hands is a joy,it gives me a sense of fulfillment,somthing so many seek and so few find.-SAM MALOOF.

Impressive!

Ryan/// ~sigh~ I blew up another bowl. Moke told me "I made the inside bigger than the outside".

you do it all impressed GR8 JOB 😍😎👍

*TONY ** Reinholds* ALWAYS REMEMBER TO HAVE FUN

Super job Jim I am glad you diligence payed of, you did some impressive engineering. 

-- Soli Deo gloria! ( To God alone be the Glory)

You're a talented man!

Darrel

Reverse engineering ftw! Nice repair.

Steven- Random Orbital Nailer

Thank you all for the nice comments. I like challenges like this- especially when they are a success!! I needed one of these because I have to use 2 100 ft cords with the electric trimmer I got at the scrap metal drive last year.

Cheers, Jim

Cheers, Jim ........................ Variety is the spice of life...............Learn something new every day

NIce work Jim....Great Engineering!!!!

Regards......Cliff.
Nice fix Jim. Now all you need to do is pop in a 20 horse engine. :-)
Thanks Cliff and George !

Cheers, Jim ........................ Variety is the spice of life...............Learn something new every day

You can make any part thats out there Jim
I try, Danny. I'm still using that can of tapping fluid you sent me. Thanks !!

Cheers, Jim ........................ Variety is the spice of life...............Learn something new every day