Vibration Isolators

[veggie]

Hi guys,

Where can vibration isolators be purchased?
Anyone using such a thing?
In this video of a listeroid with isolators, it seems that most of the vibration is retained within the unit and not transmitted to the ground.

http://www.youtube.com/watch?v=WqxvqwMDQPA

I wonder if this would be a good solution for the prevention of the "thumping" being transmitted into a garage floor.

Veggie

[veggie]

Here's a twin with the same isolators.

http://www.youtube.com/watch?v=VHQlALIcMkE&feature=related

They look like rubber blocks floating in a metal housing.

Veggie

[mobile_bob]

which engine are you wanting to isolate?

the listeroid or changfa?

as for isolation, those little dock bumper they put on the back of trucks
do an excellent job of isolation, and they are dirt cheap.

bob g

[veggie]

which engine are you wanting to isolate?

the listeroid or changfa?

bob g

Good point. Both engines have completely different frequencies.
I don't seem to get any ground thumping from the Changfa's. They are mounted on wheels and for some reason, everything is smooth.
(Counter balanced engine helps the cause)

In this case, I was inquiring about the Listeroid. Thanks for the idea on the dock bumpers.
Bolt them directly to my steel channel base and then let the system sit loose on the concrete floor?

Veggie

[mobile_bob]

yup, i would just let it sit there, the rubber friction is so high
it will be like a dry squeegie, damn near impossible to move.

or if you are pouring a concrete floor, leave some pocket where the rubbers are located
and then drop the unit down into the pockets about an inch and fill with grout
that way you have nice fitted sockets in the floor so you know it ain't moveing anywhere.

bob g

[lowspeedlife]

Veg, the "other forum" has pages & pages of guys expressing thier opinions on the vibration isolator VS static concrete mounting of the lister type engines. got to be a good 10 to 15 hours of reading on this subject.

   Scott R.

[cujet]

I used some helicopter elastomeric dampers on a Lister 20/2 with very good results. They are simply 3 inch dia, 2 inch high "biscuits" with a flange on one side and a bolt hole on the other.

[akghound]

I have mine set up on a "Dolly" sort of trailer affair. Here is the best picture I currently have. This was taken last winter when it lived outside. A testamony to just how tough these engines can be.

Just got it into a shed, it lived outside since the winter of 2006. No vibration transmitted to the shed floor with this setup. Found the frame with the tires at our local dump.
Ken Gardner

[veggie]

Where can vibration isolators be purchased?

I have a whole mess of them here but you have to pop over to pick them up ..... I have 4 of them with your name on them ..... price is right too .... free. Brand spanking new too !

Jens

Did you get a chance to try any of them on your 20/2 ?
Just wondering how well they did.

Veggie

[veggie]

akghound,

Looks like a VERY rugged environment for a Listeroid.
I noticed the belt is removed. Is she still alive and running ?

Is that a gasoline "pony engine" for starting purposes?

Veggie

[veggie]

I did notice on the video (opening post on this thread) that the machine was somewhat free to shake without the vibration being transmitted to the ground. For that reason, it would be very important to mount all other accessories off the skid and use flexible hoses.

How long do you think the rad lasted on the machine in this video ? (Scary !!!)

http://www.youtube.com/watch?v=y2dvZ-bBhWs&feature=channel

Cheers,
Veggie

[akghound]

akghound,

Looks like a VERY rugged environment for a Listeroid.
I noticed the belt is removed. Is she still alive and running ?

Is that a gasoline "pony engine" for starting purposes?

Veggie

Rugged engine for the environment. 
At the time of the picture it was down. Can't remember for sure but think the cam gear broke.
Yes, that is the pony motor. Salvaged from an old "Pop Corn" generator. You know, the kind that will blow up at any time. You just never really know when.
Things are better for the outfit now that it is in a shed.
Installed a thermostat on it yesterday, that made her a lot happyer as well.
Ken Gardner