New/Old Compressor question

[Jordan Baker]

Thanks for the replies, We will take a look for one of those auger engines. That sounds like the best way. I saw those partst listed on the Pincess Auto web site.

Will let my uncle know about it all.

[Paul Singleton]

Hi,

If I recall correctly some of the older Honda gasoline compressors used an electric clutch controlled by a standard pressure switch. The pressure switch also controlled a solonoid to pull the throttle when it was time to build air.

Paul

[Bob Carriere]

We have been using the big 10HP electric 2 stage compressor from Princess tied to a 100 pounds pot also from Princess. Draws around 65 amps on start up.... lights have been seen to dip in the village.

It is rated at 30+ cfm at 125 psi with an 120 gallon tank. The tank is set at 175 cut off..... regulator on the line set at 125...... under full blast ....pressure drops to 100 pounds and the motor runs steady.

On Summer days after 3 to 4 bags with minimal breaks for reloading it ( one bag per load) it over heats and needs resetting......or more time to cool down........ we even use a 24 inch electric fan for extra cooling......

It ran fine when we were using a 3/8 line to the pot..... when we switched to a half inch rubber line directly from the one inch steel line to the pot ...we reached it's limit.

After a typical half day of blasting you can drain over 3 liters of water from the tank.

The best home made set up I have seen was a tractor PTO driving an old rotor type compressor as used for jack hammers... the engine was shot and had been removed and was driven by a large MF diesel tractor... probably over 100cfm at 100 psi and using regular beach sand. They would do antique farm equipment such as an old Cockshutt manure spreader in less than an hour.

The dust was unbelievable.....

My conclusion is that if you are to do a whole vehicle...... get a contractor to come on site and do it quickly..... in the long run it is probably cheaper.

Use a medium size compressor unit to do smaller parts and small sub assemblies....and take breaks after reloading......otherwise most shop compressors are not meant to withstand the tremendous demands
of serious sandblasting.

I have done my C15a piece meal with my compressor....but would not do it again...... the next vehicle or trailer will be done by a large mobile unit.

Just for laughs.... it takes over one bag of 80 pounds white quartz sand at $10.30 a bag to do a pitted CMP rim...... cast iron like tranny cases are easier.... pitted sheet metal is also very consuming... one weekend without pushing ourselves Rob and I went through 20 bags.....$180 with tax.... doing a few rims and the front sheet metal for my cab 11... not the whole cab..just the nose sheet metal. Total time about a full day.....

...but we had fun !!!!

BooBee

[Jordan Baker]

Well my plan was to set it up to run my sandblasting cabinet I got from Prince Auto. So im thinking that what ive got now should be more then fine to use.