Two stroke exhaust...how hot?

[david]

Anyone know, roughly or accurately, how hot is the manifold of a 2 stroke
..50 sized engine likely to run at?


David

[John Hollinshead]

>"david" <david_perry@btconnect.com> wrote in message
news:brfano$5ff$1@hercules.btinternet.com...
> Anyone know, roughly or accurately, how hot is the manifold of a 2 stroke
> .50 sized engine likely to run at


Very, very hot

[david]

"John Hollinshead" <johnyh@chocksaway.fslife.co.uk> wrote in message
news:brfnmh$q9q$1@newsg4.svr.pol.co.uk...
> >"david" <david_perry@btconnect.com> wrote in message
> news:brfano$5ff$1@hercules.btinternet.com...
> > Anyone know, roughly or accurately, how hot is the manifold of a 2
stroke
> > .50 sized engine likely to run at
>
>
> Very, very hot
>


Er, I didnt mean quite *that* roughly!!

david

[John Hollinshead]

>"david" <david_perry@btconnect.com> wrote in message
news:brfano$5ff$1@hercules.btinternet.com...
> Anyone know, roughly or accurately, how hot is the manifold of a 2 stroke
> .50 sized engine likely to run at


Very, very hot

[Beav]

"david" <david_perry@btconnect.com> wrote in message
news:brftub$n44$1@titan.btinternet.com...
>
> "John Hollinshead" <johnyh@chocksaway.fslife.co.uk> wrote in message
> news:brfnmh$q9q$1@newsg4.svr.pol.co.uk...
> > >"david" <david_perry@btconnect.com> wrote in message
> > news:brfano$5ff$1@hercules.btinternet.com...
> > > Anyone know, roughly or accurately, how hot is the manifold of a 2
> stroke
> > > .50 sized engine likely to run at
> >
> >
> > Very, very hot
> >
>
>
> Er, I didnt mean quite *that* roughly!!

It's hot enough to make your hand rough if you grab it :-) Is that rough
enough? :-))


--
Beav


Please note my E-mail address is "beavis dot original at ntlworld dot com"
(with the obvious changes)

Beavisland now lives at
www.beavisoriginal.co.uk

[david]

"John Hollinshead" <johnyh@chocksaway.fslife.co.uk> wrote in message
news:brfnmh$q9q$1@newsg4.svr.pol.co.uk...
> >"david" <david_perry@btconnect.com> wrote in message
> news:brfano$5ff$1@hercules.btinternet.com...
> > Anyone know, roughly or accurately, how hot is the manifold of a 2
stroke
> > .50 sized engine likely to run at
>
>
> Very, very hot
>


Er, I didnt mean quite *that* roughly!!

david

[Paul McIntosh]

Depending on where you take the temps, between 150-250 deg F.

--
Paul McIntosh
Desert Sky Model Aviation
http://fly.mcintoshcentral.com
"david" <david_perry@btconnect.com> wrote in message
news:brfano$5ff$1@hercules.btinternet.com...
> Anyone know, roughly or accurately, how hot is the manifold of a 2 stroke
> .50 sized engine likely to run at?
>
>
> David
>
>

[Beav]

"david" <david_perry@btconnect.com> wrote in message
news:brftub$n44$1@titan.btinternet.com...
>
> "John Hollinshead" <johnyh@chocksaway.fslife.co.uk> wrote in message
> news:brfnmh$q9q$1@newsg4.svr.pol.co.uk...
> > >"david" <david_perry@btconnect.com> wrote in message
> > news:brfano$5ff$1@hercules.btinternet.com...
> > > Anyone know, roughly or accurately, how hot is the manifold of a 2
> stroke
> > > .50 sized engine likely to run at
> >
> >
> > Very, very hot
> >
>
>
> Er, I didnt mean quite *that* roughly!!

It's hot enough to make your hand rough if you grab it :-) Is that rough
enough? :-))


--
Beav


Please note my E-mail address is "beavis dot original at ntlworld dot com"
(with the obvious changes)

Beavisland now lives at
www.beavisoriginal.co.uk

[Paul McIntosh]

Depending on where you take the temps, between 150-250 deg F.

--
Paul McIntosh
Desert Sky Model Aviation
http://fly.mcintoshcentral.com
"david" <david_perry@btconnect.com> wrote in message
news:brfano$5ff$1@hercules.btinternet.com...
> Anyone know, roughly or accurately, how hot is the manifold of a 2 stroke
> .50 sized engine likely to run at?
>
>
> David
>
>

[The Natural Philosopher]

Paul McIntosh wrote:

> Depending on where you take the temps, between 150-250 deg F.
>
>

Very cool that. Ive seen cherry red hot manifolds on most petrol engines
I have had dealings with.

You are suggesting its below the boiling point of water., more or less?

*shrug* well I don't dop glo engines these days, but it seems a bit low
to me...

[The Natural Philosopher]

Paul McIntosh wrote:

> Depending on where you take the temps, between 150-250 deg F.
>
>

Very cool that. Ive seen cherry red hot manifolds on most petrol engines
I have had dealings with.

You are suggesting its below the boiling point of water., more or less?

*shrug* well I don't dop glo engines these days, but it seems a bit low
to me...

[Flierbk]

It depends on where you measure the temperature, right as it comes out the
exhaust port it can be close to 1000 Deg. F. it quickly cools as it moves
along the exhaust system but mufflers can run over 500 Deg. F. a lot depends
on the exhaust system and how large it is and how much back pressure it has
as well as how much cooling it gets.

Bill

"david" <david_perry@btconnect.com> wrote in message
news:brfano$5ff$1@hercules.btinternet.com...
> Anyone know, roughly or accurately, how hot is the manifold of a 2 stroke
> .50 sized engine likely to run at?
>
>
> David
>
>

[Flierbk]

It depends on where you measure the temperature, right as it comes out the
exhaust port it can be close to 1000 Deg. F. it quickly cools as it moves
along the exhaust system but mufflers can run over 500 Deg. F. a lot depends
on the exhaust system and how large it is and how much back pressure it has
as well as how much cooling it gets.

Bill

"david" <david_perry@btconnect.com> wrote in message
news:brfano$5ff$1@hercules.btinternet.com...
> Anyone know, roughly or accurately, how hot is the manifold of a 2 stroke
> .50 sized engine likely to run at?
>
>
> David
>
>

[GuW]

It also depends a lot on how lean you run the engine, how much oil you have
in the fuel (non combusted oil cools the engine) and a lot of other factors.

I use to carry my planes from the runway and to the pit by holding the
muffler, and have yet to burn myself.
On a heli, I would hesitate to grab the muffler though...

[MDJ]

"Paul McIntosh" <paul@mcintoshcentral.com> wrote in message
news:brg6vu$cg7$1@titan.btinternet.com...
> Depending on where you take the temps, between 150-250 deg F.

Much more like 150-250 deg C surely??


> Paul McIntosh
> Desert Sky Model Aviation
> http://fly.mcintoshcentral.com
> "david" <david_perry@btconnect.com> wrote in message
> news:brfano$5ff$1@hercules.btinternet.com...
> > Anyone know, roughly or accurately, how hot is the manifold of a 2
stroke
> > .50 sized engine likely to run at?
> >
> >
> > David
> >
> >
>
>

[Beav]

"Flierbk" <wkrueger1@wi.rr.com> wrote in message
news:crQCb.128518$Vu6.119000@twister.rdc-kc.rr.com...
> It depends on where you measure the temperature, right as it comes out the
> exhaust port it can be close to 1000 Deg. F. it quickly cools as it moves
> along the exhaust system but mufflers can run over 500 Deg. F. a lot
depends
> on the exhaust system and how large it is and how much back pressure it
has
> as well as how much cooling it gets.

We start at 150 - 250F and now we're up to 500F. Any advance on 500? :-)


--
Beav


Please note my E-mail address is "beavis dot original at ntlworld dot com"
(with the obvious changes)

Beavisland now lives at
www.beavisoriginal.co.uk

[Paul McIntosh]

No, they don't run that hot. At 250 C, the aluminum would start to be
getting soft. Temps "feel" a lot hotter than they actually are. Water at
130 F will cause 1st and second degree burns. Contact with metal at 250 C
would cause almost instant third degree burns. Remember, 250 C is almost
500 F. Eutectic solder melts at 183 C. Test your muffler with a piece of
solder and see if it melts.

--
Paul McIntosh
Desert Sky Model Aviation
http://fly.mcintoshcentral.com
"MDJ" <none> wrote in message
news:3fdc7894$0$30640$65c69314@mercury.nildram.net ...
>
> "Paul McIntosh" <paul@mcintoshcentral.com> wrote in message
> news:brg6vu$cg7$1@titan.btinternet.com...
> > Depending on where you take the temps, between 150-250 deg F.
>
> Much more like 150-250 deg C surely??
>
>
> > Paul McIntosh
> > Desert Sky Model Aviation
> > http://fly.mcintoshcentral.com
> > "david" <david_perry@btconnect.com> wrote in message
> > news:brfano$5ff$1@hercules.btinternet.com...
> > > Anyone know, roughly or accurately, how hot is the manifold of a 2
> stroke
> > > .50 sized engine likely to run at?
> > >
> > >
> > > David
> > >
> > >
> >
> >
>
>

[John Hollinshead]

Which is why I originally replied, layman's term, very hot.

[GuW]

It also depends a lot on how lean you run the engine, how much oil you have
in the fuel (non combusted oil cools the engine) and a lot of other factors.

I use to carry my planes from the runway and to the pit by holding the
muffler, and have yet to burn myself.
On a heli, I would hesitate to grab the muffler though...

[MDJ]

"Paul McIntosh" <paul@mcintoshcentral.com> wrote in message
news:brg6vu$cg7$1@titan.btinternet.com...
> Depending on where you take the temps, between 150-250 deg F.

Much more like 150-250 deg C surely??


> Paul McIntosh
> Desert Sky Model Aviation
> http://fly.mcintoshcentral.com
> "david" <david_perry@btconnect.com> wrote in message
> news:brfano$5ff$1@hercules.btinternet.com...
> > Anyone know, roughly or accurately, how hot is the manifold of a 2
stroke
> > .50 sized engine likely to run at?
> >
> >
> > David
> >
> >
>
>

[Beav]

"Flierbk" <wkrueger1@wi.rr.com> wrote in message
news:crQCb.128518$Vu6.119000@twister.rdc-kc.rr.com...
> It depends on where you measure the temperature, right as it comes out the
> exhaust port it can be close to 1000 Deg. F. it quickly cools as it moves
> along the exhaust system but mufflers can run over 500 Deg. F. a lot
depends
> on the exhaust system and how large it is and how much back pressure it
has
> as well as how much cooling it gets.

We start at 150 - 250F and now we're up to 500F. Any advance on 500? :-)


--
Beav


Please note my E-mail address is "beavis dot original at ntlworld dot com"
(with the obvious changes)

Beavisland now lives at
www.beavisoriginal.co.uk

[Paul McIntosh]

No, they don't run that hot. At 250 C, the aluminum would start to be
getting soft. Temps "feel" a lot hotter than they actually are. Water at
130 F will cause 1st and second degree burns. Contact with metal at 250 C
would cause almost instant third degree burns. Remember, 250 C is almost
500 F. Eutectic solder melts at 183 C. Test your muffler with a piece of
solder and see if it melts.

--
Paul McIntosh
Desert Sky Model Aviation
http://fly.mcintoshcentral.com
"MDJ" <none> wrote in message
news:3fdc7894$0$30640$65c69314@mercury.nildram.net ...
>
> "Paul McIntosh" <paul@mcintoshcentral.com> wrote in message
> news:brg6vu$cg7$1@titan.btinternet.com...
> > Depending on where you take the temps, between 150-250 deg F.
>
> Much more like 150-250 deg C surely??
>
>
> > Paul McIntosh
> > Desert Sky Model Aviation
> > http://fly.mcintoshcentral.com
> > "david" <david_perry@btconnect.com> wrote in message
> > news:brfano$5ff$1@hercules.btinternet.com...
> > > Anyone know, roughly or accurately, how hot is the manifold of a 2
> stroke
> > > .50 sized engine likely to run at?
> > >
> > >
> > > David
> > >
> > >
> >
> >
>
>

[John Hollinshead]

Which is why I originally replied, layman's term, very hot.

[MPA]

On Sat, 13 Dec 2003 15:20:24 +0000 (UTC), "david"
<david_perry@btconnect.com> wrote:

>Anyone know, roughly or accurately, how hot is the manifold of a 2 stroke
>.50 sized engine likely to run at?

Ken Hot mate.

Cheers

[MPA]

On Sat, 13 Dec 2003 15:20:24 +0000 (UTC), "david"
<david_perry@btconnect.com> wrote:

>Anyone know, roughly or accurately, how hot is the manifold of a 2 stroke
>.50 sized engine likely to run at?

Ken Hot mate.

Cheers