Porschemaniac
Member
- Messages
- 305
Firstly, I hang my head in shame. Been looking for a new compressor lately and found myself in my local MM yesterday (VAT free day). Much against my better judgement, I ended up buying a compressor there - Clarke Hunter 55. 8.7CFM 2.5 HP motor and a 50 Litre tank.
For the stuff that I do, this should be fine - and much more up to the job than my old 1.5 hp 24 Litre jobby. The only problem is that when I tried my new compressor with an air drill - rated at 4CFM - (again, a Clarke......yes.....I know!!) yesterday, it starts with great enthusiasm and then suddenly reduces the speed to about half that of the starting speed. It settles down to this reduced speed and will run happily all day - but I am sure that there is something wrong.
In my current setup, I has attached a PCL connector to the exisitng (quite small bore) outlet on the compressor. This connects to a 10M flexible airline, which I have coiled on the wall by the compressor (with about 3M fed out to the workbench). The drill connects with a standard PCL quick coupler.
I think that what may be happening is that I am losing some pressure through the hose (which is much wider than the current outlet on the compressor). I guess that pressure builds in the hose and then gets released quickly when you hit the trigger on the drill, but then, I guess, some of the delivery pressure is absorbed in filling the space in the hose before it can feed the drill.
Assuming this to be correct, I have purchased a CAT 41 filter regulator. I guess that the much wider bore that this accomodates will feed the hose and, conseqeuntly the drill, a lot faster. The fitting instructions with this are pretty bad, but I guess that I'll be OK unscrewing the blank from one end of the pressure vessel and connecting this in directly? I guess, also, that I'll look to cap-off the factory fitted outlet on top of the tank, by the pressure switch.
Any light that anyone can throw on this for me will be greatly appreciated.
Thanks,
Ian.
For the stuff that I do, this should be fine - and much more up to the job than my old 1.5 hp 24 Litre jobby. The only problem is that when I tried my new compressor with an air drill - rated at 4CFM - (again, a Clarke......yes.....I know!!) yesterday, it starts with great enthusiasm and then suddenly reduces the speed to about half that of the starting speed. It settles down to this reduced speed and will run happily all day - but I am sure that there is something wrong.
In my current setup, I has attached a PCL connector to the exisitng (quite small bore) outlet on the compressor. This connects to a 10M flexible airline, which I have coiled on the wall by the compressor (with about 3M fed out to the workbench). The drill connects with a standard PCL quick coupler.
I think that what may be happening is that I am losing some pressure through the hose (which is much wider than the current outlet on the compressor). I guess that pressure builds in the hose and then gets released quickly when you hit the trigger on the drill, but then, I guess, some of the delivery pressure is absorbed in filling the space in the hose before it can feed the drill.
Assuming this to be correct, I have purchased a CAT 41 filter regulator. I guess that the much wider bore that this accomodates will feed the hose and, conseqeuntly the drill, a lot faster. The fitting instructions with this are pretty bad, but I guess that I'll be OK unscrewing the blank from one end of the pressure vessel and connecting this in directly? I guess, also, that I'll look to cap-off the factory fitted outlet on top of the tank, by the pressure switch.
Any light that anyone can throw on this for me will be greatly appreciated.
Thanks,
Ian.