Dreaded MEC 75 saw question

http://s208.photobucket.com/albums/b...t=Image006.jpg

Hopefully this link will show a photo of a label that's on my MEC 75 saw.

I know it relates to the centre line of the blade etc to the job, but would
welcome a full interpretation of its meaning.

I don't think my nerves or ears can take much more of these saws and the
awful racket they make. Before its asked, bearings etc are all ok.
Bob

On 8 Aug, 18:38, "Emimec" <emi...@NOSPAMbtinternet.com> wrote:
> http://s208.photobucket.com/albums/b...ction=view¤t=I...
>
> Hopefully this link will show a photo of a label that's on my MEC 75 saw.
>
> I know it relates to the centre line of the blade etc to the job, but would
> welcome a full interpretation of its meaning.
>
> I don't think my nerves or ears can take much more of these saws and the
> awful racket they make. Before its asked, bearings etc are all ok.
> Bob

Bob,I don`t see how it relates to centreline of the blade to the
job.Although it could as the pic is not to clear.It looks to me as
though it is relating to the pitch of the teeth in relation to the
thickness of the cut but that`s not right either as the numbers are
going the wrong way.What is the symbol before the 5 as in up to 4 G
something 5 and what is the symbol at the top between the teeth?
My Mec 75 had a plate rivited on at the side of the slide with arrows
that were to be lined up at 90 deg and 45 deg.
I know that if you bring the blade too far over the centre with these
saws it pulls itself in and breaks the blade.When I bought my first
one many years ago the operators broke a lot of blades before I
figured that one out.I don`t have a Mec anymore,I have a Trennjaeger
which is a cracking saw but when the blade is blunt it makes one hell
of a noise.
Sorry I can`t be more help.

Bob,you could ask this lot.

http://www.pedrazzolisaws.co.uk/

Mark.

<mark@ems-fife.co.uk> wrote in message
news:1186601662.000684.110630@x35g2000prf.googlegr oups.com...
>
> Bob,you could ask this lot.
>
>
>
> http://www.pedrazzolisaws.co.uk/
>
> Mark.
>

Pedrazzoli have now been taken over (about 3 months ago) but the
Mecbrown expert Gerry is still with the new crowd - the number in his
department is 01527-527058

AWEM

<mark@ems-fife.co.uk> wrote in message
news:1186601134.214311.95590@x35g2000prf.googlegro ups.com...
On 8 Aug, 18:38, "Emimec" <emi...@NOSPAMbtinternet.com> wrote:
> http://s208.photobucket.com/albums/b...ction=view¤t=I...
>
> Hopefully this link will show a photo of a label that's on my MEC 75 saw.
>
> I know it relates to the centre line of the blade etc to the job, but
> would
> welcome a full interpretation of its meaning.
>
> I don't think my nerves or ears can take much more of these saws and the
> awful racket they make. Before its asked, bearings etc are all ok.
> Bob

Bob,I don`t see how it relates to centreline of the blade to the
job.Although it could as the pic is not to clear.It looks to me as
though it is relating to the pitch of the teeth in relation to the
thickness of the cut but that`s not right either as the numbers are
going the wrong way.What is the symbol before the 5 as in up to 4 G
something 5 and what is the symbol at the top between the teeth?
My Mec 75 had a plate rivited on at the side of the slide with arrows
that were to be lined up at 90 deg and 45 deg.
I know that if you bring the blade too far over the centre with these
saws it pulls itself in and breaks the blade.When I bought my first
one many years ago the operators broke a lot of blades before I
figured that one out.I don`t have a Mec anymore,I have a Trennjaeger
which is a cracking saw but when the blade is blunt it makes one hell
of a noise.
Sorry I can`t be more help.

Hi Mark
This picture is bad, sorry, took with a mobile phone, and up to close.
The symbol is a "T".
It looks to me that they are saying "T" is the pitch of the tooth ?
The second blurred line says: g 4 divided by 10 space t =8. Makes me think
the pitch is 8mm between each tooth?
I cant get what the "g" is, unless it is if how far over the centre line.
I realise the blade angle is important in relation to the size of material,
and can be adjusted, but how on earth these machines ever sold baffles me as
they all seem as bad noise wise. New blades, bigger blades, smaller blades,
nothing stops them making awful noises.
This has been driving me made for ages I hasten to add !!!
Sadly cant afford a good column type saw for a while, and the big job that's
in will need cutting up on the earsplitter !!
I'll take a better picture tomorrow.
Bob

"Andrew Mawson" <andrew@no_spam_please_mawson.org.uk> wrote in message
news:8LGdnRbqSKDJgSfbnZ2dnUVZ8ternZ2d@bt.com...
>
> <mark@ems-fife.co.uk> wrote in message
> news:1186601662.000684.110630@x35g2000prf.googlegr oups.com...
>>
>> Bob,you could ask this lot.
>>
>>
>>
>> http://www.pedrazzolisaws.co.uk/
>>
>> Mark.
>>
>
> Pedrazzoli have now been taken over (about 3 months ago) but the
> Mecbrown expert Gerry is still with the new crowd - the number in his
> department is 01527-527058
>
> AWEM

I did contact them a while back trying to answer the same question about
noise for my other MEC, but an older bigger Super Brown. They seem to say
the crown gear is muffed, or, the saws are very old, how about a newer one
!!!
The Bronze wheel isnt muffed by the way, I took the other one apart, and its
like new, no sharp edges on the teeth, even looking wear etc.
It must relate to blade chatter or the angle of cut. A piece of 80mm x 6mm
cuts as you would expect, put a bit of 35mm x 19mm or similar, and its
goodbye eardrums !!! Adjusting the fore and aft makes little difference. One
would think if they did this from new not many would sell?
Was the takeover by a company called "Accurate cutting" ? I actually use
them now to cut up some material, eg 5000 off jobs.
Bob
Bob
>
>

..
> Hi Mark
> This picture is bad, sorry, took with a mobile phone, and up to close.
> The symbol is a "T".
> It looks to me that they are saying "T" is the pitch of the tooth ?
> The second blurred line says: g 4 divided by 10 space t =8. Makes me think
> the pitch is 8mm between each tooth?
> I cant get what the "g" is, unless it is if how far over the centre line.
> I realise the blade angle is important in relation to the size of material,
> and can be adjusted, but how on earth these machines ever sold baffles me as
> they all seem as bad noise wise. New blades, bigger blades, smaller blades,
> nothing stops them making awful noises.
> This has been driving me made for ages I hasten to add !!!
> Sadly cant afford a good column type saw for a while, and the big job that's
> in will need cutting up on the earsplitter !!
> I'll take a better picture tomorrow.
> Bob

Bob,G is the gauge of the metal.The first line is ">4 T something 5"
This means tube with a wall thickness up to 4,but we don`t know if
they mean 4mm or 4G.
The second line is tube with a wall thickness of 4 to 10.
The third line is solid bar.
It is the symbol between the T and the 5 we need to know.
As a matter of interest what blade diameter and how many teeth are you
using to cut what?
I`ve always found these saws to cut with a nice crisp sound on solid
bar as long as the blade is good.
Have you checked the pivot bearings for wear?Again on solid bar the
wear at the pivot does not seem to matter much as the blade is pulling
the head forward and takes all the play up.

Adjusting the fore and aft makes little difference.

That statement to me means the blade is blunt,as if you put the blade
centre forward of the metal centre with a sharp blade it will near
enough self feed.If you set it far enough forward it will self feed
with dramatic and costly results as I mentioned earlier.
Are you pushing/pulling hard enough on the handle?

	#1
Emimec	Dreaded MEC 75 saw question http://s208.photobucket.com/albums/b...t=Image006.jpg Hopefully this link will show a photo of a label that's on my MEC 75 saw. I know it relates to the centre line of the blade etc to the job, but would welcome a full interpretation of its meaning. I don't think my nerves or ears can take much more of these saws and the awful racket they make. Before its asked, bearings etc are all ok. Bob

	#2
mark@ems-fife.co.uk	Re: Dreaded MEC 75 saw question On 8 Aug, 18:38, "Emimec" <emi...@NOSPAMbtinternet.com> wrote: > http://s208.photobucket.com/albums/b...ction=view¤t=I... > > Hopefully this link will show a photo of a label that's on my MEC 75 saw. > > I know it relates to the centre line of the blade etc to the job, but would > welcome a full interpretation of its meaning. > > I don't think my nerves or ears can take much more of these saws and the > awful racket they make. Before its asked, bearings etc are all ok. > Bob Bob,I don`t see how it relates to centreline of the blade to the job.Although it could as the pic is not to clear.It looks to me as though it is relating to the pitch of the teeth in relation to the thickness of the cut but that`s not right either as the numbers are going the wrong way.What is the symbol before the 5 as in up to 4 G something 5 and what is the symbol at the top between the teeth? My Mec 75 had a plate rivited on at the side of the slide with arrows that were to be lined up at 90 deg and 45 deg. I know that if you bring the blade too far over the centre with these saws it pulls itself in and breaks the blade.When I bought my first one many years ago the operators broke a lot of blades before I figured that one out.I don`t have a Mec anymore,I have a Trennjaeger which is a cracking saw but when the blade is blunt it makes one hell of a noise. Sorry I can`t be more help.

	#3
mark@ems-fife.co.uk	Re: Dreaded MEC 75 saw question Bob,you could ask this lot. http://www.pedrazzolisaws.co.uk/ Mark.

	#4
Andrew Mawson	Re: Dreaded MEC 75 saw question <mark@ems-fife.co.uk> wrote in message news:1186601662.000684.110630@x35g2000prf.googlegr oups.com... > > Bob,you could ask this lot. > > > > http://www.pedrazzolisaws.co.uk/ > > Mark. > Pedrazzoli have now been taken over (about 3 months ago) but the Mecbrown expert Gerry is still with the new crowd - the number in his department is 01527-527058 AWEM

	#6
Emimec	Re: Dreaded MEC 75 saw question "Andrew Mawson" <andrew@no_spam_please_mawson.org.uk> wrote in message news:8LGdnRbqSKDJgSfbnZ2dnUVZ8ternZ2d@bt.com... > > <mark@ems-fife.co.uk> wrote in message > news:1186601662.000684.110630@x35g2000prf.googlegr oups.com... >> >> Bob,you could ask this lot. >> >> >> >> http://www.pedrazzolisaws.co.uk/ >> >> Mark. >> > > Pedrazzoli have now been taken over (about 3 months ago) but the > Mecbrown expert Gerry is still with the new crowd - the number in his > department is 01527-527058 > > AWEM I did contact them a while back trying to answer the same question about noise for my other MEC, but an older bigger Super Brown. They seem to say the crown gear is muffed, or, the saws are very old, how about a newer one !!! The Bronze wheel isnt muffed by the way, I took the other one apart, and its like new, no sharp edges on the teeth, even looking wear etc. It must relate to blade chatter or the angle of cut. A piece of 80mm x 6mm cuts as you would expect, put a bit of 35mm x 19mm or similar, and its goodbye eardrums !!! Adjusting the fore and aft makes little difference. One would think if they did this from new not many would sell? Was the takeover by a company called "Accurate cutting" ? I actually use them now to cut up some material, eg 5000 off jobs. Bob Bob > >

	#7
mark@ems-fife.co.uk	Re: Dreaded MEC 75 saw question .. > Hi Mark > This picture is bad, sorry, took with a mobile phone, and up to close. > The symbol is a "T". > It looks to me that they are saying "T" is the pitch of the tooth ? > The second blurred line says: g 4 divided by 10 space t =8. Makes me think > the pitch is 8mm between each tooth? > I cant get what the "g" is, unless it is if how far over the centre line. > I realise the blade angle is important in relation to the size of material, > and can be adjusted, but how on earth these machines ever sold baffles me as > they all seem as bad noise wise. New blades, bigger blades, smaller blades, > nothing stops them making awful noises. > This has been driving me made for ages I hasten to add !!! > Sadly cant afford a good column type saw for a while, and the big job that's > in will need cutting up on the earsplitter !! > I'll take a better picture tomorrow. > Bob Bob,G is the gauge of the metal.The first line is ">4 T something 5" This means tube with a wall thickness up to 4,but we don`t know if they mean 4mm or 4G. The second line is tube with a wall thickness of 4 to 10. The third line is solid bar. It is the symbol between the T and the 5 we need to know. As a matter of interest what blade diameter and how many teeth are you using to cut what? I`ve always found these saws to cut with a nice crisp sound on solid bar as long as the blade is good. Have you checked the pivot bearings for wear?Again on solid bar the wear at the pivot does not seem to matter much as the blade is pulling the head forward and takes all the play up.

	#8
mark@ems-fife.co.uk	Re: Dreaded MEC 75 saw question Adjusting the fore and aft makes little difference. That statement to me means the blade is blunt,as if you put the blade centre forward of the metal centre with a sharp blade it will near enough self feed.If you set it far enough forward it will self feed with dramatic and costly results as I mentioned earlier. Are you pushing/pulling hard enough on the handle?