Thanks Mark for the idea about putting foil over the Tiny Tach sensor
wire where it wraps around the lead. I didn't run a new ground but just
tightened up the wraps and cut a piece of aluminum tape and covered the
wraps and the Tiny Tach is back to normal. This the first time that
either of the
My turtle deck is removable. 24 flat head screws into nut plates in
aluminum angle bent to match the curve and attached to the longerons with
AN3 bolts hold it in place. Removal time is about 10 minutes. Mine is a
slightly modified RR factory part.
If it is running a waste fire spark system, yes it is entirely possible. It
is common and there is nothing wrong with the practice.
The plug will fire at the top of the compression stroke as well as the top
of the exhaust stroke.
-Original Message-
From: KRnet [mailto:krnet-bounces at
My 2700CC Corvair engine built by Roy with his front bearing and set to zero
time by Roy last November. It is still at zero time because it has been
patiently awaiting another plane to fly. However, I need to part with it
and all the goodies that go with it for $10,500.
By all the goodies, I
Back in the '60's when Ho...a's- started exporting , - the squadron I was
on in Malaysia bought a whole bunch of Cubs.
Were a bit hacked off when the plugs started failing after a short time
-our resident engineer reckoned that due to a design fault the ignition was
firing twice in the 4 stroke
I probably should have phrased that better... the V-Twin construction
follows the typical 4 cycle configuration; the mag fires on every revolution
and the power strokes are controlled by cam timing. Take the cover off the
mag and watch the lobe and point actuation - that will tell you if you are
A- not possible, by design mags turn at the rate of the camshaft...one rev. per
four strokes. B- double firing does not cause rapid sparkplug wear. Probably
lead-fouling or improper heat range plugs.
a design fault the ignition wasfiring twice in the 4 stroke cycle -and
burningout the plugs
My '60 Sportster (XLCH) with a Morris mag "fires" on every revolution on
both cylinders, although due to cam timing the front and rear cylinders are
on a 'power' stroke on alternating revolutions. Because of the 45 degree
cylinder separation you get the sweet Harley sound... or as the motor
Its the back half off a Piel Emeraude, but turned around to make it a bit
slicker.
I am at last getting on with it having got the approvals for all my mods and
the Jabiru.
Just done the toe brakes, thanks for the design on your website, Mark.
Just about to start on the firewall forward. I
Thanks Mike for the exceptional tech talk?. this is why I follow this site so
directly?. Thanks again?jw
Joe. E. Wallace
jwallacep51 at gmail.com
> On May 25, 2015, at 00:25, Mike Stirewalt via KRnet
> wrote:
>
> I've had a miss in the secondary ignition for awhile and didn't know
> which
> "Were a bit hacked off when the plugs started failing after a short
time
-our resident engineer reckoned that due to a design fault the ignition
was
firing twice in the 4 stroke cycle -and burning out the plugs -is this
possible?"
Yes, I think most motorcycle ignitions use the "wasted spark"
It's not a design fault, it's called a "wasted spark" ignition. Plug
fires every revolution of the crank, even on the exhaust cycle. It's
common on British bikes as well.
On 5/25/2015 9:55 AM, Mac McConnell-Wood via KRnet wrote:
> Back in the '60's when Ho...a's- started exporting , - the
Back in my early working days I was called to a customer's factory to sell them
a new paper cutter. I thought I would be selling to an in-house printshop. My
jaw dropped when I stepped into a giant room where HP made it's transformers
and coils, and found hundreds of ladies at tables spinning
Hi Paul
I have made a removable turtle deck see www.peterskr2s.co.uk.
It has 6 2024 ally lugs cast in the fibreglass which will have nutplates
on. They are fixed by screws from the outside.
It means that access to the rear of the fuselage is so much easier. Note the
sexy shape of canopy and
Mike Stirewall wrote:
> This other issue that came up regarding the Tiny Tach readouts being
> twice normal is a mystery I feel I should know the answer to but just
> can't think of.
Good luck with that! Those are the most finicky electrical devices I've
ever had to deal with. Mine read
Peter Drake wrote:
>Note the sexy shape of canopy and turtle deck!
Wow! That's a nice one! Is that a Grob canopy, or what? It looks
similar to Willie Wilson's. That's some awesome workmanship. That's
going to be a gorgeous plane. Let us know how the spoiler's work out.
It ought to have
Years ago I raced motorcycles and OEM Japanese coils were notoriously
cheesy, some brands of bikes worse than others. I never raced new bikes
so they all had some time (but in many cases, not much time) on them
when I got them. After some frustrating issues I made it a practice to
replace
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