I have aquired a 34 degree 50-90mm clipped head framing nailer made by
Rongpeng in China (yes I know).

My question is about the compressor to feed it. I have a Seeley 50L 8
Bar compressor and it won't knock the nails in all the way.

However I took it to a mates workshop where they have a 200L 10 Bar
compressor and the nailer eats the 90mm nails at a feed pressuer of 6
Bar.

Now to my way of thinking as 6 Bar is enough pressure to knock nails
in whilst my compressor may not keep up with a nail a second or so it
should at least knock the first nail in ok.

Only thing I could think of was there are restrictions in my
compressor somewhere causing pressure drop at the gun (used same hose
etc on my mates rig). Any ideas anyone?

Cheers

Andy

"Andy Barron" wrote in message
om...
I have aquired a 34 degree 50-90mm clipped head framing nailer made by
Rongpeng in China (yes I know).

My question is about the compressor to feed it. I have a Seeley 50L 8
Bar compressor and it won't knock the nails in all the way.

However I took it to a mates workshop where they have a 200L 10 Bar
compressor and the nailer eats the 90mm nails at a feed pressuer of 6
Bar.

Now to my way of thinking as 6 Bar is enough pressure to knock nails
in whilst my compressor may not keep up with a nail a second or so it
should at least knock the first nail in ok.

Only thing I could think of was there are restrictions in my
compressor somewhere causing pressure drop at the gun (used same hose
etc on my mates rig). Any ideas anyone?

Cheers

Andy

Output pressure regulator turned down? Most air tools run at 90PSI IIRC.
With any luck your compressor has an ajustable pressure regulator and an
output pressure guage to see what the current output pressure is.
I have powered my Clarke air nailer from a similar 50l compressor in the
past and it's worked perfectly.

Alan.

On 22 Oct 2004 05:17:48 -0700, (Andy
Barron) wrote:

I have aquired a 34 degree 50-90mm clipped head framing nailer made by
Rongpeng in China (yes I know).

My question is about the compressor to feed it. I have a Seeley 50L 8
Bar compressor and it won't knock the nails in all the way.

However I took it to a mates workshop where they have a 200L 10 Bar
compressor and the nailer eats the 90mm nails at a feed pressuer of 6
Bar.

Now to my way of thinking as 6 Bar is enough pressure to knock nails
in whilst my compressor may not keep up with a nail a second or so it
should at least knock the first nail in ok.

Only thing I could think of was there are restrictions in my
compressor somewhere causing pressure drop at the gun (used same hose
etc on my mates rig). Any ideas anyone?


I would be suspicious of the behaviour of the output regulator on your
compressor.

I have a large Senco framing nailer and originally ran it on a 25
litre SIP compressor with no problems at all. Of course it runs
perfectly happily on a 150litre compressor as well.

The air volume used with a framing nailer is going to be larger than
with a smaller 15-18 gauge nailer but nowhere near as much as with
tools like drills, angle grinders and sprayers.
You can determine this easily with how frequently the motor starts. I
would suspect on your home compressor, even with this problem, it is
not that often.

However, when you squeeze the trigger on a framing nailer there is
certainly a rapid pressure drop.

If the regulator is not maintaining reasonable pressure quickly enough
then you will get the effect you describe.

Also if you think about it logically, at your friend's place, you used
the same tool and hose as at home, and the size of the receiver of the
compressor is not important. It only leaves one thing - the
regulator.


..andy

To email, substitute .nospam with .gl

Thanks for your help, It's kinda what I thought and since the
compressor is new I guess I need to go and get the supplier to sort it
out.

Thanks again.

Andy.

Andy Hall wrote in message

The air volume used with a framing nailer is going to be larger than
with a smaller 15-18 gauge nailer but nowhere near as much as with
tools like drills, angle grinders and sprayers.
You can determine this easily with how frequently the motor starts. I
would suspect on your home compressor, even with this problem, it is
not that often.

However, when you squeeze the trigger on a framing nailer there is
certainly a rapid pressure drop.

If the regulator is not maintaining reasonable pressure quickly enough
then you will get the effect you describe.

Also if you think about it logically, at your friend's place, you used
the same tool and hose as at home, and the size of the receiver of the
compressor is not important. It only leaves one thing - the
regulator.


Now I am really confused, we took the bung out of the end of the tank
and put in a proper regulator (Norgren or something) and still get the
same behaviour. I am not very good at physics but by my reckoning if
you allow 2 litres of air per shot and the 50 litre tank pressure is 8
bar then the drop in pressure in the tank is going to be about 0.3 Bar
per shot so it ought to work.

If any ones got any other ideas I'd really appreciate hearing them.

Cheers Andy

On 19 Nov 2004 09:03:54 -0800, (Andy
Barron) wrote:

Andy Hall wrote in message

The air volume used with a framing nailer is going to be larger than
with a smaller 15-18 gauge nailer but nowhere near as much as with
tools like drills, angle grinders and sprayers.
You can determine this easily with how frequently the motor starts. I
would suspect on your home compressor, even with this problem, it is
not that often.

However, when you squeeze the trigger on a framing nailer there is
certainly a rapid pressure drop.

If the regulator is not maintaining reasonable pressure quickly enough
then you will get the effect you describe.

Also if you think about it logically, at your friend's place, you used
the same tool and hose as at home, and the size of the receiver of the
compressor is not important. It only leaves one thing - the
regulator.


Now I am really confused, we took the bung out of the end of the tank
and put in a proper regulator (Norgren or something) and still get the
same behaviour. I am not very good at physics but by my reckoning if
you allow 2 litres of air per shot and the 50 litre tank pressure is 8
bar then the drop in pressure in the tank is going to be about 0.3 Bar
per shot so it ought to work.

If any ones got any other ideas I'd really appreciate hearing them.

Cheers Andy


Have you tried the nailer and hose back on your friend's compressor?
It's a slim chance that something happened to the nailer in the
meantime. I assume you've oiled it etc. according to the maker's
recommendations??



--

..andy

To email, substitute .nospam with .gl

"Andy Hall" wrote in message


On 19 Nov 2004 09:03:54 -0800, (Andy
Barron) wrote:

Andy Hall wrote in message

The air volume used with a framing nailer is going to be larger than
with a smaller 15-18 gauge nailer but nowhere near as much as with
tools like drills, angle grinders and sprayers.

I am not very good at physics but by my reckoning if
you allow 2 litres of air per shot and the 50 litre tank pressure is 8
bar then the drop in pressure in the tank is going to be about 0.3 Bar
per shot so it ought to work.

Have you tried the nailer and hose back on your friend's compressor?
It's a slim chance that something happened to the nailer in the
meantime. I assume you've oiled it etc. according to the maker's
recommendations??

Lots of things can go wrong with them but I imagine the main reason is
that a compressor with a large tank rated to hold an higher pressure
will never drop to the critical limit. With a smaller tank and a lower
pressure setting, the drop will get critical almost immediately. It
should
knock the first nail home from a full tank though.

That's if your gauge is reading correctly. One of those cheapo
compressors with a small tank and a supplied gun using the correct pins
will not shoot in more that 2 or 3 before jamming. Both machines I used
were of that capacity, I can't remember any details though except that
you could get the same compressor fitted to a series of larger tanks for
little more than a few quid extra.

I might still get one if I can convince myself that a seriously long
hose would not reduce it's potency even more. (And I could use the 240 v
on any site I go to!)

Until then I think Paslode is the way to go. It won't be long for the
Chinese to cotton on there is a market out there for cheap Paslode
immitations.


--
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On Sat, 20 Nov 2004 01:55:14 +0000 (UTC), "Michael Mcneil"
wrote:

"Andy Hall" wrote in message


On 19 Nov 2004 09:03:54 -0800, (Andy
Barron) wrote:

Andy Hall wrote in message

The air volume used with a framing nailer is going to be larger than
with a smaller 15-18 gauge nailer but nowhere near as much as with
tools like drills, angle grinders and sprayers.

I am not very good at physics but by my reckoning if
you allow 2 litres of air per shot and the 50 litre tank pressure is 8
bar then the drop in pressure in the tank is going to be about 0.3 Bar
per shot so it ought to work.

Have you tried the nailer and hose back on your friend's compressor?
It's a slim chance that something happened to the nailer in the
meantime. I assume you've oiled it etc. according to the maker's
recommendations??

Lots of things can go wrong with them but I imagine the main reason is
that a compressor with a large tank rated to hold an higher pressure
will never drop to the critical limit. With a smaller tank and a lower
pressure setting, the drop will get critical almost immediately. It
should
knock the first nail home from a full tank though.

What do you mean by "critical limit"? The point at which the
compressor motor runs because the receiver pressure has dropped?

This should not make any difference. I have a large Senco framing
nailer and when it was run on a 25 litre compressor, the motor would
only run every 20 or so nails.



That's if your gauge is reading correctly. One of those cheapo
compressors with a small tank and a supplied gun using the correct pins
will not shoot in more that 2 or 3 before jamming.

That's likely to be the poor quality of the gun more than anything
else. Regarding the gauge, the OP has replaced the original with a
Norgren regulator - their stuff is good quality.


Both machines I used
were of that capacity, I can't remember any details though except that
you could get the same compressor fitted to a series of larger tanks for
little more than a few quid extra.

I might still get one if I can convince myself that a seriously long
hose would not reduce it's potency even more. (And I could use the 240 v
on any site I go to!)

I've used the Senco one on 50m of hose with no issues at all.


Until then I think Paslode is the way to go. It won't be long for the
Chinese to cotton on there is a market out there for cheap Paslode
immitations.

They are quite noisy and smelly and the consumables quite expensive.



--

..andy

To email, substitute .nospam with .gl

Thanks for all your help, if I had some means to measure the high
speed pressure pulse in the tank when the gun is fired I might be able
to prove this critical limit thing although as I said before I don't
think the instantaneous pressure drop should be more than 0.3 Bar.

I guess I am just going to have to find another compressor,
fortunately I can send the old one back because of the way I specified
what I wanted when I bought it.

Anyone got any recommendations, the SIP Airpower ones look ok, I think
I'd go for a belt drive one this time though.

Thanks again for all your help.


Andy

On 21 Nov 2004 03:20:45 -0800, (Andy) wrote:

Thanks for all your help, if I had some means to measure the high
speed pressure pulse in the tank when the gun is fired I might be able
to prove this critical limit thing although as I said before I don't
think the instantaneous pressure drop should be more than 0.3 Bar.

It should run on a very small compressor, though. Have you checked
the nailer back on your friend's compressor?



I guess I am just going to have to find another compressor,
fortunately I can send the old one back because of the way I specified
what I wanted when I bought it.

Anyone got any recommendations, the SIP Airpower ones look ok, I think
I'd go for a belt drive one this time though.

I previously had a small SIP 25 litre model which worked well for
nailers.

I needed a larger model to provide air for more air-hungry tools and
longer runs at spraying so now have a 150litre SIP Airmate P3/150

Good product. These people (still) seem to have the best pricing

http://www.aircompressors.co.uk/airmatetrade.htm




Thanks again for all your help.


Andy


--

..andy

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