Re: how "tight" should the crankshaft be with new bearings?
 

"Refinish King" <noneofyourbusiness@neveryoumind.nospam.com> wrote in
message news:%zNac.8164$Hs1.2774@fe03.usenetserver.com...
> If they did that:
>
> They're asking for a crack to happen. Read the manual, for every crank,
> there is a specified fillet radius!
>
> Refinish King

A radiused fillet is less likely to crack than a sharply ground one, re the
stress raiser
phenomenon we have discussed before.. I think that more often than not, the
fillet
is not intented to be left overly large...it is probably a result of less
than precise machining.

It can interfere with the edge of the bearing, just as "c" said.

I never heard of anyone using narrower bearings, but they do 'relieve' the
edge of the
bearing where it might contact the fillet.

Seems I have seen a special tool to do this, but don't have one myself.

Re: how "tight" should the crankshaft be with new bearings?
 

"Refinish King" <noneofyourbusiness@neveryoumind.nospam.com> wrote in
message news:%zNac.8164$Hs1.2774@fe03.usenetserver.com...
> If they did that:
>
> They're asking for a crack to happen. Read the manual, for every crank,
> there is a specified fillet radius!
>
> Refinish King

A radiused fillet is less likely to crack than a sharply ground one, re the
stress raiser
phenomenon we have discussed before.. I think that more often than not, the
fillet
is not intented to be left overly large...it is probably a result of less
than precise machining.

It can interfere with the edge of the bearing, just as "c" said.

I never heard of anyone using narrower bearings, but they do 'relieve' the
edge of the
bearing where it might contact the fillet.

Seems I have seen a special tool to do this, but don't have one myself.

Re: how "tight" should the crankshaft be with new bearings?
 

"Refinish King" <noneofyourbusiness@neveryoumind.nospam.com> wrote in
message news:%zNac.8164$Hs1.2774@fe03.usenetserver.com...
> If they did that:
>
> They're asking for a crack to happen. Read the manual, for every crank,
> there is a specified fillet radius!
>
> Refinish King

A radiused fillet is less likely to crack than a sharply ground one, re the
stress raiser
phenomenon we have discussed before.. I think that more often than not, the
fillet
is not intented to be left overly large...it is probably a result of less
than precise machining.

It can interfere with the edge of the bearing, just as "c" said.

I never heard of anyone using narrower bearings, but they do 'relieve' the
edge of the
bearing where it might contact the fillet.

Seems I have seen a special tool to do this, but don't have one myself.

Re: how "tight" should the crankshaft be with new bearings?
 

It's called a bearing knife or bearing scraper:

But, if you have an excessively large fillet radius, especially in a cast
iron crankshaft. that is the perfect place for a radial crack to begin.

The fillet radius should be ground with the stone dressed to the propper
radius for the crankshaft in the machine.

Refinish King


"HLS" <Sorry@nospam> wrote in message
news:10719qskrk8ad4f@corp.supernews.com...
>
> "Refinish King" <noneofyourbusiness@neveryoumind.nospam.com> wrote in
> message news:%zNac.8164$Hs1.2774@fe03.usenetserver.com...
> > If they did that:
> >
> > They're asking for a crack to happen. Read the manual, for every crank,
> > there is a specified fillet radius!
> >
> > Refinish King
>
> A radiused fillet is less likely to crack than a sharply ground one, re
the
> stress raiser
> phenomenon we have discussed before.. I think that more often than not,
the
> fillet
> is not intented to be left overly large...it is probably a result of less
> than precise machining.
>
> It can interfere with the edge of the bearing, just as "c" said.
>
> I never heard of anyone using narrower bearings, but they do 'relieve' the
> edge of the
> bearing where it might contact the fillet.
>
> Seems I have seen a special tool to do this, but don't have one myself.
>
>

Re: how "tight" should the crankshaft be with new bearings?
 

It's called a bearing knife or bearing scraper:

But, if you have an excessively large fillet radius, especially in a cast
iron crankshaft. that is the perfect place for a radial crack to begin.

The fillet radius should be ground with the stone dressed to the propper
radius for the crankshaft in the machine.

Refinish King


"HLS" <Sorry@nospam> wrote in message
news:10719qskrk8ad4f@corp.supernews.com...
>
> "Refinish King" <noneofyourbusiness@neveryoumind.nospam.com> wrote in
> message news:%zNac.8164$Hs1.2774@fe03.usenetserver.com...
> > If they did that:
> >
> > They're asking for a crack to happen. Read the manual, for every crank,
> > there is a specified fillet radius!
> >
> > Refinish King
>
> A radiused fillet is less likely to crack than a sharply ground one, re
the
> stress raiser
> phenomenon we have discussed before.. I think that more often than not,
the
> fillet
> is not intented to be left overly large...it is probably a result of less
> than precise machining.
>
> It can interfere with the edge of the bearing, just as "c" said.
>
> I never heard of anyone using narrower bearings, but they do 'relieve' the
> edge of the
> bearing where it might contact the fillet.
>
> Seems I have seen a special tool to do this, but don't have one myself.
>
>

Re: how "tight" should the crankshaft be with new bearings?
 

It's called a bearing knife or bearing scraper:

But, if you have an excessively large fillet radius, especially in a cast
iron crankshaft. that is the perfect place for a radial crack to begin.

The fillet radius should be ground with the stone dressed to the propper
radius for the crankshaft in the machine.

Refinish King


"HLS" <Sorry@nospam> wrote in message
news:10719qskrk8ad4f@corp.supernews.com...
>
> "Refinish King" <noneofyourbusiness@neveryoumind.nospam.com> wrote in
> message news:%zNac.8164$Hs1.2774@fe03.usenetserver.com...
> > If they did that:
> >
> > They're asking for a crack to happen. Read the manual, for every crank,
> > there is a specified fillet radius!
> >
> > Refinish King
>
> A radiused fillet is less likely to crack than a sharply ground one, re
the
> stress raiser
> phenomenon we have discussed before.. I think that more often than not,
the
> fillet
> is not intented to be left overly large...it is probably a result of less
> than precise machining.
>
> It can interfere with the edge of the bearing, just as "c" said.
>
> I never heard of anyone using narrower bearings, but they do 'relieve' the
> edge of the
> bearing where it might contact the fillet.
>
> Seems I have seen a special tool to do this, but don't have one myself.
>
>

Re: how "tight" should the crankshaft be with new bearings?
 

It's called a bearing knife or bearing scraper:

But, if you have an excessively large fillet radius, especially in a cast
iron crankshaft. that is the perfect place for a radial crack to begin.

The fillet radius should be ground with the stone dressed to the propper
radius for the crankshaft in the machine.

Refinish King


"HLS" <Sorry@nospam> wrote in message
news:10719qskrk8ad4f@corp.supernews.com...
>
> "Refinish King" <noneofyourbusiness@neveryoumind.nospam.com> wrote in
> message news:%zNac.8164$Hs1.2774@fe03.usenetserver.com...
> > If they did that:
> >
> > They're asking for a crack to happen. Read the manual, for every crank,
> > there is a specified fillet radius!
> >
> > Refinish King
>
> A radiused fillet is less likely to crack than a sharply ground one, re
the
> stress raiser
> phenomenon we have discussed before.. I think that more often than not,
the
> fillet
> is not intented to be left overly large...it is probably a result of less
> than precise machining.
>
> It can interfere with the edge of the bearing, just as "c" said.
>
> I never heard of anyone using narrower bearings, but they do 'relieve' the
> edge of the
> bearing where it might contact the fillet.
>
> Seems I have seen a special tool to do this, but don't have one myself.
>
>

Re: how "tight" should the crankshaft be with new bearings?
 

I guess Lunati and all of the other aftermarket crank manufacturers have
been doing it wrong all these years.

http://www.holley.com/HiOctn/ProdLin...CSGenInfo.html

It is common knowledge that a radius reduces the chance for a stress crack
by ditributing the stresses evenly across the radius. The bigger the radius,
the more area to absorbs stresses.

Chris


"Refinish King" <noneofyourbusiness@neveryoumind.nospam.com> wrote in
message news:SK4cc.4262$Em4.2316@fe03.usenetserver.com...
> It's called a bearing knife or bearing scraper:
>
> But, if you have an excessively large fillet radius, especially in a cast
> iron crankshaft. that is the perfect place for a radial crack to begin.
>
> The fillet radius should be ground with the stone dressed to the propper
> radius for the crankshaft in the machine.
>
> Refinish King
>
>
> "HLS" <Sorry@nospam> wrote in message
> news:10719qskrk8ad4f@corp.supernews.com...
> >
> > "Refinish King" <noneofyourbusiness@neveryoumind.nospam.com> wrote in
> > message news:%zNac.8164$Hs1.2774@fe03.usenetserver.com...
> > > If they did that:
> > >
> > > They're asking for a crack to happen. Read the manual, for every
crank,
> > > there is a specified fillet radius!
> > >
> > > Refinish King
> >
> > A radiused fillet is less likely to crack than a sharply ground one, re
> the
> > stress raiser
> > phenomenon we have discussed before.. I think that more often than not,
> the
> > fillet
> > is not intented to be left overly large...it is probably a result of
less
> > than precise machining.
> >
> > It can interfere with the edge of the bearing, just as "c" said.
> >
> > I never heard of anyone using narrower bearings, but they do 'relieve'
the
> > edge of the
> > bearing where it might contact the fillet.
> >
> > Seems I have seen a special tool to do this, but don't have one myself.
> >
> >
>
>
>

Re: how "tight" should the crankshaft be with new bearings?
 

I guess Lunati and all of the other aftermarket crank manufacturers have
been doing it wrong all these years.

http://www.holley.com/HiOctn/ProdLin...CSGenInfo.html

It is common knowledge that a radius reduces the chance for a stress crack
by ditributing the stresses evenly across the radius. The bigger the radius,
the more area to absorbs stresses.

Chris


"Refinish King" <noneofyourbusiness@neveryoumind.nospam.com> wrote in
message news:SK4cc.4262$Em4.2316@fe03.usenetserver.com...
> It's called a bearing knife or bearing scraper:
>
> But, if you have an excessively large fillet radius, especially in a cast
> iron crankshaft. that is the perfect place for a radial crack to begin.
>
> The fillet radius should be ground with the stone dressed to the propper
> radius for the crankshaft in the machine.
>
> Refinish King
>
>
> "HLS" <Sorry@nospam> wrote in message
> news:10719qskrk8ad4f@corp.supernews.com...
> >
> > "Refinish King" <noneofyourbusiness@neveryoumind.nospam.com> wrote in
> > message news:%zNac.8164$Hs1.2774@fe03.usenetserver.com...
> > > If they did that:
> > >
> > > They're asking for a crack to happen. Read the manual, for every
crank,
> > > there is a specified fillet radius!
> > >
> > > Refinish King
> >
> > A radiused fillet is less likely to crack than a sharply ground one, re
> the
> > stress raiser
> > phenomenon we have discussed before.. I think that more often than not,
> the
> > fillet
> > is not intented to be left overly large...it is probably a result of
less
> > than precise machining.
> >
> > It can interfere with the edge of the bearing, just as "c" said.
> >
> > I never heard of anyone using narrower bearings, but they do 'relieve'
the
> > edge of the
> > bearing where it might contact the fillet.
> >
> > Seems I have seen a special tool to do this, but don't have one myself.
> >
> >
>
>
>

Re: how "tight" should the crankshaft be with new bearings?
 

I guess Lunati and all of the other aftermarket crank manufacturers have
been doing it wrong all these years.

http://www.holley.com/HiOctn/ProdLin...CSGenInfo.html

It is common knowledge that a radius reduces the chance for a stress crack
by ditributing the stresses evenly across the radius. The bigger the radius,
the more area to absorbs stresses.

Chris


"Refinish King" <noneofyourbusiness@neveryoumind.nospam.com> wrote in
message news:SK4cc.4262$Em4.2316@fe03.usenetserver.com...
> It's called a bearing knife or bearing scraper:
>
> But, if you have an excessively large fillet radius, especially in a cast
> iron crankshaft. that is the perfect place for a radial crack to begin.
>
> The fillet radius should be ground with the stone dressed to the propper
> radius for the crankshaft in the machine.
>
> Refinish King
>
>
> "HLS" <Sorry@nospam> wrote in message
> news:10719qskrk8ad4f@corp.supernews.com...
> >
> > "Refinish King" <noneofyourbusiness@neveryoumind.nospam.com> wrote in
> > message news:%zNac.8164$Hs1.2774@fe03.usenetserver.com...
> > > If they did that:
> > >
> > > They're asking for a crack to happen. Read the manual, for every
crank,
> > > there is a specified fillet radius!
> > >
> > > Refinish King
> >
> > A radiused fillet is less likely to crack than a sharply ground one, re
> the
> > stress raiser
> > phenomenon we have discussed before.. I think that more often than not,
> the
> > fillet
> > is not intented to be left overly large...it is probably a result of
less
> > than precise machining.
> >
> > It can interfere with the edge of the bearing, just as "c" said.
> >
> > I never heard of anyone using narrower bearings, but they do 'relieve'
the
> > edge of the
> > bearing where it might contact the fillet.
> >
> > Seems I have seen a special tool to do this, but don't have one myself.
> >
> >
>
>
>