Subject: Re: Stupid newbie question #1, petcocks

Author: ranjan

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Makes me wonder what the reserve is.
----- Original Message -----
From: Steve Farris
To: Loopfram-@topica.com
Sent: Wednesday, January 26, 2005 12:39 PM
Subject: Re: Stupid newbie question #1, petcocks

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ssssh! I was sure no one else would see this :)
----- Original Message -----
From: Greg Bender
To: Loopfram-@topica.com
Sent: Wednesday, January 26, 2005 11:36 AM
Subject: RE: Stupid newbie question #1, petcocks

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Just saw this on ebay...are those the petcocks to which you are
referring?

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=4522819523&category=35558

Greg Bender wrote:
>
> Hi Randy,
>
> I'd love to see pictures of these, if you have 'em. If not, don't
> bother. Thanks!
>
> greg @ thisoldtractor . com
>
> ranjan wrote:
> >
> > AJ
> > I have a 67 V700 with original tamedicks, (petcocks) that do not have
> > any
> > perforated tubes on either side. These petcocks have flip levers
> > mounted
> > horizontally that have only 2 positions, on or off.
> > As Greg stated you use the left one as main tank, and the right as the
> > reserve, acct. of the tank tunnel acting as a separate reserve tank
> > area.
> >
> > I think that Greg's left petcock tube with higher perforations could
> > possibly give you a 2nd reserve if there actually was a reserve position
> >
> > on
> > the petcock, similar to BMWs of the time. If I run my
> > R90/6 like my 700, I get 3 reserves. First I run the LH cock on main,
> > 2nd
> > the RH cock on main, then back to the LH for reserve and finally the RH
> > reserve hoping the gas station is in sight.
> > I've never ran out yet, with this much low fuel warnings and a 6.8
> > gallon
> > tank. Oh! my aching butt!!
> >
> > Randy Wilson
> > SE SoDak
> > 67 V700
> > 97 R1100RT
> > 75 R90/6
> > 68 Shovelhead I'm getting tired of
> > 'renching!
> > too many, but not for sale
> > 51 Panhead
> > 72 CL 350
> > 79 DT 80 (street legal)
> > 82 XT 550 (not running yet)
> > ----- Original Message -----
> > From: "Greg Bender" <gr-@thisoldtractor.com>
> > To: <Loopfram-@topica.com>
> > Sent: Tuesday, January 25, 2005 5:16 PM
> > Subject: RE: Stupid newbie question #1, petcocks
> >
> >
> > Your free subscription is supported by today's sponsor:
> > -------------------------------------------------------------------
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> > computer! It has a $1299.99 value but can be yours Free!
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> > -------------------------------------------------------------------
> >
> > If you are lucky, AJ, you have either one of the two common petcocks
> > that Guzzi used. One type is chrome plated, and the other type is
> > alluminum. Both have square bodies and with a little handle/lever that
> > turns. Now, on to how most of them operate...
> >
> > When functioning properly (that is, no leaks), the petcocks I described
> > above are either "on" or "off". There is no "reserve" position (more on
> > reserve, later). If all is right with the world, the 6 o'clock position
> > should have the fuel moving through either petcock. Either the 3 o'clock
> > or the 6 o'clock positions will close the fuel supply.
> >
> > About reserve...later models (starting with the 850T, I think) used
> > petcocks with three handle positions "on", "off", and "reserve". Moto
> > Guzzi used a different technique with the loop frames. Essentially,
> > there is a tube that is affixed to the top of each petcock (stuck up
> > into the tank). The tube is perferated with holes so that the fuel can
> > flow. On the left petcock (in the stock configuration), the holes in the
> > tube did not start until part way up the tube. On the right petcock (in
> > the stock configuration), the holes in the tube go clear to the bottom.
> > The idea being that you turn the left petcock on and run the bike. Once
> > the fuel level goes below the perforations on the tube, you turn the
> > right side petcock on and beeline for the nearest petrol station.
> >
> > This design requires that you have a "cross" installed between the fuel
> > lines so that one petcock feeds both carburetors. As Patrick mentions,
> > there are many aftermarket varieties that have been installed on a lot
> > of the loops, so you really don't know what you have until you take a
> > look.
> >
> > To the best of my knowledge, the above information is correct. However,
> > the wise members on this list will certainly correct my errors. Good
> > luck!
> >
> > Patrick Hayes wrote:
> > >
> > >
> > >
> > > AJ Huff wrote:
> > >
> > > > not. Please bear with my ignorance, they are three position, left
> > > > (9:00), down (6:00), right (3:00). Which direction is open, which is
> > > > shut? I can get the bike to start in all three positions, but cannot get
> > > >
> > > > it to idle for more than a few minutes so that doesn't really tell me
> > > > much. Also should both sides be in the same position?
> > >
> > > Guzzi used several types of petcocks and some owners also changed to
> > > aftermarket versions. So, it is really difficult for anyone to answer
> > > this precisely for you. You'll really have to drain the tanks down to
> > > analyze what you have.
> > >
> > > Some petcocks have two internal stems. One sits higher than the other.
> > > When fuel level gets below the higher stem it stops flowing. Turning
> > > the valve opens the lower stem for an additional or reserve supply.
> > >
> > > Some petcocks only have one flow level. You drive the bike on one until
> > >
> > > it runs dry. Due to the internal shape of the tank there is always an
> > > extra supply captured on the non-opened side. Open the second valve and
> > >
> > > you use that supply as a reserve.
> > >
> > > Pull your petcocks, disassemble and learn what you have on your bike.
> > >
> > > Generally, the bikes will run just fine on only one petcock opening
> > > unless you have some other fuel flow restriction.
> > >
> > > Patrick Hayes
> > > Fremont CA
> >
> >
> >
> > Regards,
> >
> > Greg Bender
> > 1971 Ambassador
> > 2000 Quota
> >http://www.thisoldtractorcom/gtbender
> >
> > Your free subscription is supported by today's sponsor:
> > -------------------------------------------------------------------
> > Like music? Get a CD player on us. Click here.
> >http://click.topica.com/caac48Rb1dfltb6364mf/PermissionData
> > -------------------------------------------------------------------
> >
> >
>
>
>
> Regards,
>
> Greg Bender
> 1971 Ambassador
> 2000 Quota
>http://www.thisoldtractorcom/gtbender

Regards,

Greg Bender
1971 Ambassador
2000 Quota
http://www.thisoldtractorcom/gtbender

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<DIV>Makes me wonder what the reserve is.</DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black">From:
<A title=n-@msn.com href="mailto:nmwi-@msn.com">Steve Farris</A>
</DIV>
<DIV style="FONT: 10pt arial">To: <A title=Loopf-@topica.com
href="mailto:Loopfram-@topica.com">Loopfram-@topica.com</A> </DIV>
<DIV style="FONT: 10pt arial">Sent: Wednesday, January 26, 2005 12:39
PM</DIV>
<DIV style="FONT: 10pt arial">Subject: Re: Stupid newbie question #1,
petcocks</DIV>
<DIV> </DIV><PRE>Your free subscription is supported by today's sponsor:
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<DIV>
<DIV>ssssh! I was sure no one else would see this :)</DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV style="FONT: 10pt arial">From: <A
href="mailto:gr-@thisoldtractor.com">Greg Bender</A> </DIV>
<DIV style="FONT: 10pt arial">To: <A
href="mailto:Loopfram-@topica.com">Loopfram-@topica.com</A>
</DIV>
<DIV style="FONT: 10pt arial">Sent: Wednesday, January 26, 2005 11:36
AM</DIV>
<DIV style="FONT: 10pt arial">Subject: RE: Stupid newbie question #1,
petcocks</DIV>
<DIV> </DIV>Your free subscription is supported by today's
sponsor: ------------------------------------------------------------------- Click
here and get your free* stock car racing gift. <A
href="http://click.topica.com/caac2NQb1dfltbN3z84a/PermissionData">http://click.topica.com/caac2NQb1dfltbN3z84a/PermissionData</A> ------------------------------------------------------------------- Just
saw this on ebay...are those the petcocks to which you are
 referring? <A
href="http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=4522819523&category=35558">http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=4522819523&category=35558</A> Greg
Bender wrote: > > Hi Randy, > > I'd love to see
pictures of these, if you have 'em. If not, don't > bother.
Thanks! > > greg @ thisoldtractor . com > > ranjan
wrote: > > > > AJ > > I have a 67 V700 with
original tamedicks, (petcocks) that do not have > > any >
> perforated tubes on either side. These petcocks have flip
levers > > mounted > > horizontally that have only 2
positions, on or off. > > As Greg stated you use the left one as
main tank, and the right as the > > reserve, acct. of the tank
tunnel acting as a separate reserve tank > > area. > >
 > > I think that Greg's left petcock tube with higher perforations
could > > possibly give you a 2nd reserve if there actually was a
reserve position > > > > on > > the petcock,
similar to BMWs of the time. If I run my > > R90/6 like my
700, I get 3 reserves. First I run the LH cock on main, > >
2nd > > the RH cock on main, then back to the LH for reserve and
finally the RH > > reserve hoping the gas station is in
sight. > > I've never ran out yet, with this much low fuel warnings
and a 6.8 > > gallon > > tank. Oh! my aching
butt!! > > > > Randy Wilson > > SE SoDak >
> 67 V700 > > 97 R1100RT > > 75 R90/6 > > 68
Shovelhead
I'm getting tired of > > 'renching! > > too
many, but not for sale > > 51 Panhead > > 72 CL
350 > > 79 DT 80 (street legal) > > 82 XT 550 (not running
yet) > > ----- Original Message ----- > > From: "Greg
Bender" <<A
href="mailto:gr-@thisoldtractor.com">gr-@thisoldtractor.com</A>> >
> To: <<A
href="mailto:Loopfram-@topica.com">Loopfram-@topica.com</A>> >
> Sent: Tuesday, January 25, 2005 5:16 PM > > Subject: RE:
Stupid newbie question #1, petcocks > > > > > >
Your free subscription is supported by today's sponsor: > >
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> Find out how you can get a Free Gateway M320X Series Laptop >
> computer! It has a $1299.99 value but can be yours Free! > >
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>
------------------------------------------------------------------- >
> > > If you are lucky, AJ, you have either one of the two
common petcocks > > that Guzzi used. One type is chrome plated, and
the other type is > > alluminum. Both have square bodies and with a
little handle/lever that > > turns. Now, on to how most of them
operate... > > > > When functioning properly (that is, no
leaks), the petcocks I described > > above are either "on" or
"off". There is no "reserve" position (more on > > reserve, later).
If all is right with the world, the 6 o'clock position > > should
have the fuel moving through either petcock. Either the 3 o'clock >
> or the 6 o'clock positions will close the fuel supply. > >
 > > About reserve...later models (starting with the 850T, I think)
used > > petcocks with three handle positions "on", "off", and
"reserve". Moto > > Guzzi used a different technique with the loop
frames. Essentially, > > there is a tube that is affixed to the top
of each petcock (stuck up > > into the tank). The tube is
perferated with holes so that the fuel can > > flow. On the left
petcock (in the stock configuration), the holes in the > > tube did
not start until part way up the tube. On the right petcock (in > >
the stock configuration), the holes in the tube go clear to the
bottom. > > The idea being that you turn the left petcock on and
run the bike. Once > > the fuel level goes below the perforations
on the tube, you turn the > > right side petcock on and beeline for
the nearest petrol station. > > > > This design requires
that you have a "cross" installed between the fuel > > lines so
that one petcock feeds both carburetors. As Patrick mentions, > >
there are many aftermarket varieties that have been installed on a
lot > > of the loops, so you really don't know what you have until
you take a > > look. > > > > To the best of my
knowledge, the above information is correct. However, > > the wise
members on this list will certainly correct my errors. Good > >
luck! > > > > Patrick Hayes wrote: > >
> > > > > > > > > > AJ Huff
wrote: > > > > > > > not. Please bear with my
ignorance, they are three position, left > > > > (9:00), down
(6:00), right (3:00). Which direction is open, which is > > >
> shut? I can get the bike to start in all three positions, but cannot
get > > > > > > > > it to idle for more than a
few minutes so that doesn't really tell me > > > > much. Also
should both sides be in the same position? > > > > >
> Guzzi used several types of petcocks and some owners also changed
to > > > aftermarket versions. So, it is really difficult
for anyone to answer > > > this precisely for you. You'll
really have to drain the tanks down to > > > analyze what you
have. > > > > > > Some petcocks have two internal
stems. One sits higher than the other. > > >
When fuel level gets below the higher stem it stops flowing.
Turning > > > the valve opens the lower stem for an additional
or reserve supply. > > > > > > Some petcocks only
have one flow level. You drive the bike on one until > >
> > > > it runs dry. Due to the internal shape of the
tank there is always an > > > extra supply captured on the
non-opened side. Open the second valve and > > > >
> > you use that supply as a reserve. > > > > >
> Pull your petcocks, disassemble and learn what you have on your
bike. > > > > > > Generally, the bikes will run just
fine on only one petcock opening > > > unless you have some
other fuel flow restriction. > > > > > > Patrick
Hayes > > > Fremont CA > > > > > >
 > > Regards, > > > > Greg Bender > >
1971 Ambassador > > 2000 Quota > > <A
href="http://www.thisoldtractor.com/gtbender">http://www.thisoldtractorcom/gtbender</A> >
> > > Your free subscription is supported by today's
sponsor: > >
------------------------------------------------------------------- >
> Like music? Get a CD player on us. Click here. > > <A
href="http://click.topica.com/caac48Rb1dfltb6364mf/PermissionData">http://click.topica.com/caac48Rb1dfltb6364mf/PermissionData</A> >
>
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> > > > > > > Regards, >
 > Greg Bender > 1971 Ambassador > 2000 Quota > <A
href="http://www.thisoldtractor.com/gtbender">http://www.thisoldtractorcom/gtbender</A> Regards, Greg
Bender 1971 Ambassador 2000 Quota <A
href="http://www.thisoldtractor.com/gtbender">http://www.thisoldtractorcom/gtbender</A> Your
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Subject: Re: Stupid newbie question #1, petcocks

Author: ranjan

Date: Jan 27, 2005, 5:55 PM

Post ID: 1718288871

Entire thread: