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Tool recommendation needed

Posted on 4/30/25 at 11:20 am
Posted by SBGRosco
Member since Apr 2023
65 posts
Posted on 4/30/25 at 11:20 am
I’ve got a boat house to refurbish & I want to do all of the work myself. I need to know if any of y’all have experience using any kind of gas-powered or maybe air-powered 4x4 post drivers. There’s a few brands on the web but none that I can vouch for the quality of. Anybody got a solid recommendation for this?
Posted by wickowick
Head of Island
Member since Dec 2006
46125 posts
Posted on 4/30/25 at 11:30 am to
What type of ground? My FIL used to talk about jetting down post in the sand
Posted by SBGRosco
Member since Apr 2023
65 posts
Posted on 4/30/25 at 12:28 pm to
Sandy mud.
Posted by cgrand
HAMMOND
Member since Oct 2009
43086 posts
Posted on 4/30/25 at 12:54 pm to
quote:

Sandy mud.
pressure washer and a joint of PVC
Posted by MrBobDobalina
BRo.LA
Member since Oct 2011
3153 posts
Posted on 5/1/25 at 9:37 am to
Its expensive, but we have a Rhino PD-140. It runs off of compressed air and weighs 140 lbs on its own. It needs a water separator/oiler attachment to keep it from seizing up. I used it last fall to drive 20 new metal pier pilings in one day. The last time our pier was rebuilt before that (1970s), they drove them by hand and it took nearly 3 weeks.

They are awesome. If you can find one for rent, you could probably use one that was half the weight. But its what we had in our tool room so we welded up a frame with a chain hoist to support it.

It worked so well that the 4 of us out there were actively considering leaving our job to build piers full time. We drove 3" SCH 40 Metal pipes through a submerged tire and another one went through a buried tree. I doubt a lighter driver would've had the stroke to do that but it was awesome watching it punch through anything and everything.

This was in silty/sand mixture. I will vouch 10/10 for any Rhino products.
This post was edited on 5/1/25 at 9:39 am
Posted by WhiskeyThrottle
Weatherford Tx
Member since Nov 2017
6441 posts
Posted on 5/1/25 at 2:42 pm to
quote:


Its expensive, but we have a Rhino PD-140. It runs off of compressed air and weighs 140 lbs on its own. It needs a water separator/oiler attachment to keep it from seizing up. I used it last fall to drive 20 new metal pier pilings in one day. The last time our pier was rebuilt before that (1970s), they drove them by hand and it took nearly 3 weeks.

They are awesome. If you can find one for rent, you could probably use one that was half the weight. But its what we had in our tool room so we welded up a frame with a chain hoist to support it.

It worked so well that the 4 of us out there were actively considering leaving our job to build piers full time. We drove 3" SCH 40 Metal pipes through a submerged tire and another one went through a buried tree. I doubt a lighter driver would've had the stroke to do that but it was awesome watching it punch through anything and everything.

This was in silty/sand mixture. I will vouch 10/10 for any Rhino products.


Where are you located? Louisiana?

I couldn't imagine hand banging 30 piers for a dock. I set 3 at our lake house and it was incredibly difficult with a huge hammer.

Did the Rhino have to have a engine generator compressor? The ones I've looked at, the CFM requirements were insane. More than even a large compressor could provide.
Posted by MrBobDobalina
BRo.LA
Member since Oct 2011
3153 posts
Posted on 5/2/25 at 12:54 am to
quote:

hand banging 30 piers for a dock


Yep a few of these vises:



One or two of these mankillers in 4":


A decent welder and a couple 4 foot levels. They would drive them 5 feet at a time and weld a new piece on top. We did the same with 10 foot pieces and let the hammer do the hard work.


Yes in Louisiana this was in Pointe Coupee.

We have a diesel air compressor we use for jackhammering that ran it easily. I think the PD ran around 60-65 cfm and the air compressor was around 110-120 cfm. In hindsight I guess it was somewhat of an operation but for what it is, there was no easier way to do it. Other than paying somebody 10-15k to get a barge out there for something we did for peanuts. The tools were all sitting around collecting dust since Katrina, just had to figure out how to use them over open water.

The compressor you would need is towable and turns diesel into one kind of loud noise or another.
Posted by OYB
LAPLACE
Member since Dec 2018
355 posts
Posted on 5/2/25 at 6:26 am to
Cando Mofo Bob right here
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