vibration dampening *LINK*

Re: vibration dampening

Paul Porter in Phoenix, AZ

>Thanks, John. I'll have to try it. Even though my lathe weighs 850 lbs., I still get vibration sometimes.

Re: vibration dampening

RevDoug

>I'm going to be religated to a ShopSmith before long (until I get my big lathe built). This may be my answer to most of the vibration that I get. Since a ShopSmith is so light, a 50# weight mounted a couple of feet above the spindle might just be the trick. Can't wait to hear of others using this idea and what their results are.

Turn 'em round,

RevDoug

Re: vibration dampening

Ed Thomas, Leaside (Toronto) Ontario

>I haven't tried that solution. At first my lathe was too low so I bolted some 6x6 under the legs. Not much help in the wiggle department. ;)

A couple of years later my buddy at the local restaurant asked if I could make a bo for his 13 yr old daughter's grading present (1st dan). This entailled extending the bed to over 6'. To mount the bed extension I placed an H-beam, made from 2 of 2x6 with spacer blocks, between the lathe and stand. An unintended consequence was a lot less vibration.

The lathe is shown before transfer to the new beam (100#) and bench (300#). Tailstock pressure was causing the H-beam to flex a bit.

Re: vibration dampening *LINK*

Mark Kauder, Phenix City, AL

>Does anyone have experience with the Kelton Vibration balancer?

I have wondered about this thing since I first tried to do some of balance turning.

Mark


http://www.kelton.co.nz/balance.html

Re: vibration dampening

Russ Fairfield

>Mark,

Now that you have a real lathe, you can do the same thing with a 3/4" plywood disc attached between the wood and a faceplate. Attach 2 diving weights to the periphery of the disc with through bolts. Move them around until you get static balance and you will be good to go.

The Kelton balancer is a manufacturered version of the same thing.

Re: vibration dampening *LINK*

Lyn J. Mangiameli

>I have one and like it a lot. I reviewed it for More Woodturning two years ago, the pdf of which can be found at the link below


Kelton Balancer Review

Re: vibration dampening

Lyn J. Mangiameli

>Jerry Glaser developed a working prototype of one of these about 40 years ago. He eventually passed it into my hands, and I always keep it mounted to my large lathe. It is notably effective (as all things designed by Jerry Glaser), especially as it can be tuned to any resonant frequencies that might develop.

I wrote a reveiw on it for More Woodturning a couple of years ago. It's not on my webpage there, but I'll see if I can find the original and ask Fred if he can find time to work it up as a pdf. I'll also try to get the issue number so that subscribers can find it in their back issues.

Re: vibration dampening *LINK*

oubaasjohn

>Well I have been lurking on this site for a while now but since this post involves my antivibration solution I will put in my two cents.

The weight added high up does help more than weight at the base of the lathe but there are some factors to consider:

1 The lathe must be on a stable footing.

2 If the wood is off centre the vibrations seem to find whatever is not dampened and will vibrate that - I ended up mounting two weights overhead since one just allowed another part of the lathe to wiggle.

3 Watch your head! If I did not wear a face shield I would have bumped my head several times as I change belts!

I would love to hear from others who have tried this system.


http://www3.sympatico.ca/3jdw8

Re: Is this the one??

Russ Fairfield

>Lyn,

Is this the arrangement that Jerry used?

Re: vibration dampening

Mark Kauder, Phenix City, AL

>Thanks for the tip, Russ. You got my gears turning on this one.

By the way you own an appology to my Jet Mini, she is over in the corner crying, sobbing over and over that she IS a REAL Lathe. ;)

Mark

Re: this is the one that Jerry...

Lyn J. Mangiameli

>Glaser used to use, mounted to an old Nova 3000 I used to have.

Re: vibration dampening

Robert Cox

>JC Whitney used to sell a gizmo for cars.

It was a plate that mounted behind the wheel with a circular tube filled with oil and lead shot.

The idea was that you then had a dynamic balance going.