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1. 02:55 AM - Re: Fw: Engines (Graham Brighton)
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Limp mode with the early Subaru models has been sussed ... but with the
newer models with say variable valve timing and with suspension control
and brakes and and .. well no body can be totally certain about what the
ecu can do if this and that is faked out etc ..
Yep amazing what those early aviation guys got up too ... haven't read
the book but will look out for it ....
Would be great if some new interest was brought to the TR1 wing .. but
haven't u just build a lite wing ..!?
Graham
.
----- Original Message -----
From: Scott Stearns
To: kis-list@matronics.com
Sent: Sunday, January 23, 2011 6:25 AM
Subject: Re: Fw: KIS-List: Engines
I thought there was a simple fix for the limp home mode problem.
I'm using P-mags for ignition which have spark advance, but it's
not as good as you can do with a knock sensor and digital fuel
injection.
With light winds and fully cleaned up my plane just might be
able to do make it to Hawaii. After you make Hawaii then getting down
to Australia is "easy". Reminds me of the book called The Sky Beyond by
an Australian named Gordon Taylor. It's about the flying in Australia
and the south pacific in the 20s and 30s. Imagine landing a Catalina on
the lagoon in Bora Bora in the 1930s. Great book.
Scott
--- On Wed, 1/19/11, Graham Brighton <gbrighton@skymesh.com.au>
wrote:
From: Graham Brighton <gbrighton@skymesh.com.au>
Subject: Fw: KIS-List: Engines
To: kis-list@matronics.com
Date: Wednesday, January 19, 2011, 3:39 AM
Subject: Re: KIS-List: Engines
G'Day back Scott,
And i reckon u could just
about make it to Australia with all that fuel .... of course u'd have to
'super-size' .er ..that Bottle ...!!
I looked at my Subaru engine weights again ... 2.5 sti engine
running non turbo .. ( turbo 270 hp ... but looking for derated at close
to 200 hp )
Engine long block 80kg
Engine exhaust x2 4kg
Alternator 70amp 5kg
Engine mounts 3kg
Intake/coil/leads/TB 7kg
Redrive 1:1.82 ratio 26kg
Total .......... 125kg (275 lbs
Belly Scoop Radiator ... ?kg
Plumbing ........................ ?kg
Water coolant...................?kg
So pretty line ball with the IO 360 by the looks ..?!
Cost well ..... Auto conversions can cost anything ...cost
Larry his plane ... sob ...cost me a forced landing and some busted
parts ... has cost others much more hey ..? BUT .... If u find the
rite engine builder (finally i think i have ) who specializes in only my
engine (subaru) type and is fair dinkum ( not blowing smoke) ... well
not much money ... I'v managed to track down bout the best subaru man in
Melbourne ...$ 2-3 K for engine preparation (blue printing crank
clearances,forged pistons ,line boring ,s/s x-rayed valves , etc etc ..
i supplied the block and core heads and Delta cams .. His short block
(factory new) price $1600 .. ( bugger i already paid $2000 for the same
factory block grr ..!?)
Haven't settled on engine management ... has to be not subaru
though (limp mode etc etc ..) The engine builder is looking at SDS and
Tracy Cook etc ...
Running knock sensors allows timing rite up to Peck Power ..
and without it the engine is just missing out on available power ...!
Redrives ... are a real headache i think .... Harmonics vary
with each individual engine type combo ... so danger there ...
Electric's ...well i didn't build the plane so there is gaps
in my knowledge how some things are set up .. i have two 17 amp hr (34
amp hrs)Batteries and two Buss's ..engine runs on either or both !! ..
and will run on the Alternator alone ..!!! ...not as good as running
Mags ...but ur Mag timing is set off for detonation safety ... so
loosing power hey !!
Anyway ...blowed if i know ... i specially DON'T like getting
milked by the certified engine so and so's ...!!!
Engine guy thinks i'm a little conservative ... ! but a turbo
is a possibility in the future ..far off though ...( car turbo rotors
are not suitable for aero use though )
So ..as Bill says ...not for everybody ..!!
Cheers
Graham
Ps Have friends coming to CA in 3 wks time ..wish it was me
..sob ..!
.
.
----- Original Message -----
From: Scott Stearns
To: kis-list@matronics.com
Sent: Tuesday, January 18, 2011 7:26 PM
Subject: Re: KIS-List: Engines
Hi Graham,
I don't mind using a relief bottle. Also going
multiple legs without refueling can be useful. For instance I was
flying down in the Bahamas over the summer and it would have saved a
good amount of money to have been able to fill up with $4 gallon gas in
the US and not have to buy the $6+/gallon gas in the Bahamas.
Basically I can do two 3 hour legs and land with full
main tanks (40 gallons), but I would have to do it solo. For instance
I'll flying from California to Florida at some point. Right now there
are some airports in texas that are selling 100LL for $3.50/gallon. I
could fly from Texas to Florida and half way back with the cheap gas
even if I wanted to stop a couple times.
Good luck with the subaru engine. What kind of power
are you expecting and at what cost? What kind of electical system are
you running to have backup power for the engine computer?
Scott
--- On Mon, 1/17/11, Graham Brighton
<gbrighton@skymesh.com.au> wrote:
From: Graham Brighton <gbrighton@skymesh.com.au>
Subject: Re: KIS-List: Engines
To: kis-list@matronics.com
Date: Monday, January 17, 2011, 3:30 AM
Scott,
My Internet has been interrupted lately
(flooding up north) ..so couldn't get back straight away .. Good
thinking on being able to hold HP up high ..have to wonder about
'watering the horse' though with all that fuel endurance .... My
'endurance' due bladder ..!!! is only a couple of hrs though ..!!!
On my engine build ... well the engine is in some
ways the easy part and i do like water for head cooling etc ...but the
Redrive with an auto conversion is much more problematic .. !!! Should
come in under 300lbs ... will re total the weights this week ..
Hey ..Bill Schertz ...how bout chiming in with some
back up with ur Cruiser .... it has a Rotary rite ..or ..or ..?
Cheers
Graham
(TR1 #80)
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