Post Knocker

[Ian150482]

Nothing to do with the thread about building post knockers, but seen some horrible accidents with them, some bloke, typical farmer, held a post with his hand, the guy in cab on the controls released it and it hit the blokes hand, ripping the skin off his hand. was sick.

 

Always hate using them.

[porky]

There's a lot of good info on -

 

http://www.tractorbynet.com/forums/index.php

[stoxs]

I would use a rope and pulleys instead of chains, if you go to a good agri supplier you can buy a conversion kit . In the kit you would get the rope and pulleys.

 

The difficult part of building one would be the sliding weight but not a massive task if you have access to a good steal supplier and a bit of machining.

[garth mc garth]

my old knocker was real basic, 2.4m steel rsj with a plate welded in to. single acting ram with small diameter inner stancion, large diameter hydraulic hose and expansion spring to really pull the weight down, 300kg hammer weight really knocked them in well. also helps if you put a free flow return back into back axle or hydraulic tank coz if u go thru spool block it wont let fluid move quick enough

[PeteB]

Try the mark one sledge - 10 or 14lb variety!

 

Puts muscle on yer back.

[Tommy_B]

This is what you need!!!

[Quickthorn]

I would use a rope and pulleys instead of chains,

 

Agree. the one I was using kept kicking the chain off the sprockets.

[madmatt]

This is what you need!!!

 

 

er no its not niether is a sledge hammer or fencing maul!!! not when he has nearly 1000 posts to put in!

[josharb87]

used one for livestock fencing, quarrane was mounted on the front loader, brilliant, and easy to use being loader mounted-had the front/rear tilt from the loader, and a ram on the knocker to tilt if tractor was on a gradient-that had 3strand not chains.

simmilar to this:

 

 

although this looks like a home made jobby, ours would knock sleepers in!

[PeteB]

Seen a Parmetor for sale at about £700 in a dealers yard in Wilts. PM me if required.

Cheers