John; Turbo compounding in this case means having a turbine in the exhaust
system that is geared to the crank shaft. The exhaust pressure is used to
develop force to the crankshaft instead of driving the supercharger. In the
late 40s it was thought the engine would just serve as a gas generator and
the turbine would drive the prop. Than they realized that a compressor was a
better gas generator than a piston engine. In 66 they closed the piston
engine shop where I worked and I moved to the Jet Shop. Rich Fox
-----Original Message-----
From: John Beckett <landspeedracer@email.msn.com>
To: Richard Fox <v4gr@rcn.com>; Mike Jenkins
<MikeJ@speedrecordclub.softnet.co.uk>; LSR List <land-speed@autox.team.net>
Date: Tuesday, October 10, 2000 02:26 PM
Subject: compounding
>I'm definitely missing something here. I was thinking that turbo
compounding
>was using two or more turbos to forces more air in the engine. Thought the
>F-1 cars did this in the 80's.
>
>John Beckett
>----- Original Message -----
>From: "Richard Fox" <v4gr@rcn.com>
>To: "Mike Jenkins" <MikeJ@speedrecordclub.softnet.co.uk>; "LSR List"
><land-speed@autox.team.net>
>Sent: Tuesday, October 10, 2000 4:41 PM
>Subject: Re: cooling
>
>
>> Dan Warriner; This sounds good. What do you think the board will say?
Rich
>> PS will this be legal in Vintage categories?
>> -----Original Message-----
>> From: Mike Jenkins <MikeJ@speedrecordclub.softnet.co.uk>
>> To: LSR List <land-speed@autox.team.net>
>> Date: Tuesday, October 10, 2000 12:59 PM
>> Subject: Re: cooling
>>
>>
>> >Hmm, a turbo-compound LSR vehicle! Don't think I've ever heard of one
>being
>> >mooted before. Would it run as blown or as a turbine, or both? The only
>> >proposed motor sport application that I've ever heard of was back in the
>> mid
>> >'80s when AustinRover were considering developing one for their Metro
6R4
>> >Rally car for its Group 'S' life but the class was banned before it
>began.
>> >
>> >There was a development programme in the '50s on a marine turbo-compound
>> >engine over here in Britain based on the Napier Deltic engine. Not only
>did
>> >it almost double the power output of the engine but it also had a system
>of
>> >'afterburning' for short-periods where very high power was required.
This
>> >worked by squirting more fuel and air into the exhaust system upstream
of
>> >the turbine, and gave an almost unbelievable increase in power - from
>> memory
>> >it was another 60 or 70 percent! Now that would be difficult to
legislate
>> >for in the rules!!
>> >
>> >Mike Jenkins
>> >
>> >----- Original Message -----
>> >From: Richard Fox <v4gr@rcn.com>
>> >To: Joe Amo <jkamo@rapidnet.com>
>> >Cc: <land-speed@autox.team.net>
>> >Sent: Tuesday, October 10, 2000 3:52 PM
>> >Subject: Re: cooling
>> >
>> >
>> >> Joe; well that's a concern, although I have worked on lots of twin
>> >ignition
>> >> engines of large size with plugs on opposite sides of cylinders. Even
>> >flown
>> >> long distances over water using such a system. I also liked the
>> >> Turbo-compound feature of the 3350 Wright Cyclone. Dan is that legal?.
>> >Rich
>> >> Fox
>> >> -----Original Message-----
>> >> From: Joe Amo <jkamo@rapidnet.com>
>> >> To: Richard Fox <v4gr@rcn.com>
>> >> Cc: land-speed@autox.team.net <land-speed@autox.team.net>
>> >> Date: Monday, October 09, 2000 08:57 PM
>> >> Subject: Re: cooling
>> >>
>> >>
>> >> >Are you trying to create detonation ? Just curious,
>sounds
>> >> >dangerous to me
>> >> >Joe ( I can show you how to bend rods) Amo :)
>> >> >
>> >> >Richard Fox wrote:
>> >> >
>> >> >> I have been trying to send this for awhile, maybe it will work this
>> >time.
>> >> >> I'm making chips doing a billet aluminum head for my 32 Plymouth.
>> >> Converting
>> >> >> back to "L" head. I plan no water jacket mostly because its easier
>> that
>> >> way.
>> >> >> My thought is there is no exhaust passage in the head and it will
>have
>> >16
>> >> >> fins 1/8 thick by 3/4 tall with 3/8 gaps between them. Any input on
>> >this
>> >> >> plan, informed or otherwise, is encouraged. Also I will be using
two
>> 10
>> >> mm
>> >> >> sparkplugs one in the normal place next to the exhaust valve and
one
>> >over
>> >> >> the bore. Thought it would be interesting to vary the timing
between
>> >them
>> >> to
>> >> >> see what happens. I am sure all of this was done 50 years ago but
it
>> >> keeps
>> >> >> me busy. Rich Fox
>> >> >> -----Original MessageCc: land-speed@autox.team.net
>> >> >> <land-speed@autox.team.net>
>> >> >> Date: Monday, October 09, 2000 05:18 AM
>> >> >> Subject: Re: cooling
>> >> >>
>> >> >> >I don't often weigh in on the tech stuff, but we had Ed Pink give
>us
>> >> some
>> >> >> >input to this cooling deal. Ed states that you can't have too
much
>> >> water,
>> >> >> >all nooks and cranies must be filled to avoid any chance of hot
>spots
>> >> which
>> >> >> >can lead to detonation. We currently use two 12 volt pumps at the
>> >water
>> >> >> >tank. The ouput of these pumps feed into a sprint car centrifugal
>> pump
>> >> >> >driven off the crank. There is a thermostat in the line also to
aid
>> in
>> >> >> >keeping the temp constant.
>> >> >> >
>> >> >> >Dan (real cool) Warner
>> >> >> >
>> >> >> >----- Original Message -----
>> >> >> >From: John Beckett <landspeedracer@email.msn.com>
>> >> >> >To: Keith Turk <kturk@ala.net>; Land Speed List
>> >> <land-speed@autox.team.net>
>> >> >> >Sent: Friday, October 06, 2000 3:13 PM
>> >> >> >Subject: Re: cooling
>> >> >> >
>> >> >> >
>> >> >> >> Now here is an interesting bit of info: A good standard water
>pump
>> >> flows
>> >> >> >> about 100 gpm, a NASCAR pump flows 180 gpm. The best electric
>pump
>> I
>> >> have
>> >> >> >> found flows only about 30 gpm.
>> >> >> >> So now if your flow starts off at thirty gpm it ain't gonna be
>> >> anywhere
>> >> >> >near
>> >> >> >> close to the 35 gpm needed at the exit point.
>> >> >> >>
>> >> >> >> John Beckett, LSR #79,
>> >> >> >> ----- Original Message -----
>> >> >> >> From: "Keith Turk" <kturk@ala.net>
>> >> >> >> To: "John Beckett" <landspeedracer@email.msn.com>; "Land Speed
>> List"
>> >> >> >> <land-speed@autox.team.net>
>> >> >> >> Sent: Friday, October 06, 2000 9:12 AM
>> >> >> >> Subject: Re: cooling
>> >> >> >>
>> >> >> >>
>> >> >> >> > On your Recommendation I spent an hour on the phone yesterday
>> with
>> >> Carl
>> >> >> >> > Adams... of Adams Pumps..
>> >> >> >> >
>> >> >> >> > Carl is a LSR fan... and a Nascar Cooling specialist... it was
>a
>> >> >> >> fascinating
>> >> >> >> > conversation and I look forward to hanging out with him on the
>> >> 28th....
>> >> >> >> >
>> >> >> >> > He was saying what we needed was a Minimum of 35 gallons of
>Flow
>> >per
>> >> >> >> Minute
>> >> >> >> > and that the Water Must in fact Flow through all the Block..
>not
>> >> just
>> >> >> >the
>> >> >> >> > Front... Back cylinders are often stagnant.... He was a BIG
>FAN
>> >of
>> >> >> >> > Thermostats.... saying they need to be VERY HIGH.... like 190
>or
>> >> so....
>> >> >> >he
>> >> >> >> > wanted the Water Temp to be in the 210 range to Make Power...
>> >saying
>> >> >> >there
>> >> >> >> > was 80hp difference in one of his applications between 160 and
>> 210
>> >> >> >> > degrees...
>> >> >> >> >
>> >> >> >> > His other Big Comment was that the Pump needed to be Measured
>not
>> >at
>> >> >> the
>> >> >> >> > Pump but through the Block.... at the outlet.... anything else
>is
>> >> just
>> >> >> >> > guessing at what the actual flow through the restrictions
>really
>> >> is...
>> >> >> >> >
>> >> >> >> > I can't remember all the conversation but like you John... I
>was
>> >> very
>> >> >> >> > impressed with the guys knowledge of Cooling.
>> >> >> >> >
>> >> >> >> > Keith
>> >> >> >> > ----- Original Message -----
>> >> >> >> > From: "John Beckett" <landspeedracer@email.msn.com>
>> >> >> >> > To: "Land Speed List" <land-speed@autox.team.net>
>> >> >> >> > Sent: Friday, October 06, 2000 8:14 AM
>> >> >> >> > Subject: cooling
>> >> >> >> >
>> >> >> >> >
>> >> >> >> > > OK, thought I would give Keith a break and start a new
>thread.
>> >> >> >> > >
>> >> >> >> > > My big question is how important is the cooling system to
HP?
>> >and
>> >> >> >> > longevity?
>> >> >> >> > >
>> >> >> >> > > Have had several problems with melted pistons over the
years.
>> >And
>> >> I
>> >> >> >> > thought
>> >> >> >> > > they were due to none cooling related problems (probably
>were).
>> >> But
>> >> >> >now
>> >> >> >> I
>> >> >> >> > > wonder if the cooling system was of a better design whether
>the
>> >> >> >pistons
>> >> >> >> > > would have ultimately melted (or at least melted as
quickly).
>> >> >> >> > >
>> >> >> >> > > So (on a SB Chevy) how much water flow (gpm) is required for
>> >> proper
>> >> >> >> > cooling?
>> >> >> >> > > Can you have to much flow?
>> >> >> >> > >
>> >> >> >> > > What's the preferred pump: belt driven or electric? How much
>HP
>> >> does
>> >> >> a
>> >> >> >> > belt
>> >> >> >> > > driven pump use vs. an alternator to drive all the
electrical
>> >> >> >> accessories.
>> >> >> >> > >
>> >> >> >> > > Should you run a thermostat? and at what temp? or just a
>> >> restrictor?
>> >> >> >> > >
>> >> >> >> > > Is it better to design a LSR cooling system based on Drag
>> Racing
>> >> or
>> >> >> >> > NASCAR?
>> >> >> >> > >
>> >> >> >> > > What's up with reverse flow systems? don't see many in grass
>> >roots
>> >> >> >> racing.
>> >> >> >> > >
>> >> >> >> > > John Beckett
>> >> >> >> > >
>> >> >> >> > >
>> >> >> >> > >
>> >> >> >> > >
>> >> >> >> > >
>> >> >> >> > >
>> >> >> >> > >
>> >> >> >> >
>> >> >> >>
>> >> >> >>
>> >> >> >>
>> >> >> >
>> >> >> >
>> >> >
>> >> >
>> >> >
>> >>
>> >>
>> >
>>
>
>
>
|