Harley engine special

I don't care how well the engine performs in the bike,
putting it in an airplane is just plane(?) dumb.

I amd NOT going to bolt a prop on THAT crank.

It wasn't designed for anything like prop loads.

And, I doubt any assembled crankshaft COULD survive such service.


But other than that, Mrs. Lincoln, how was the play?



Richard

"Richard Lamb" wrote in message
...

I don't care how well the engine performs in the bike,
putting it in an airplane is just plane(?) dumb.

I amd NOT going to bolt a prop on THAT crank.

It wasn't designed for anything like prop loads.

And, I doubt any assembled crankshaft COULD survive such service.


But other than that, Mrs. Lincoln, how was the play?



Richard

Well, I went and looked at the site, Dick, and the engine looks to have a
redrive, in which case your argument is all wet. Mrs. Lincoln advises you
put your thinking cap on if you have one.

jls wrote:

"Richard Lamb" wrote in message
...

I don't care how well the engine performs in the bike,
putting it in an airplane is just plane(?) dumb.

I amd NOT going to bolt a prop on THAT crank.

It wasn't designed for anything like prop loads.

And, I doubt any assembled crankshaft COULD survive such service.


But other than that, Mrs. Lincoln, how was the play?



Richard

Well, I went and looked at the site, Dick, and the engine looks to have a
redrive, in which case your argument is all wet. Mrs. Lincoln advises you
put your thinking cap on if you have one.


Oh, pardon me for not chasing every link on the net.

It's still a pinned crankshaft.

But, hey, I'm just some nut that don't know nothing.

Best of luck.

Richard

(a post from the past - brought to you in person
since I couldn't figure out how to reference a single
message from the archives...)

refering to a skin vibration issue on an amphibian project.
(12/18/2001)

================================================== =========

The structure is built but has serious vibration problems?

If it's not something out of balance, then it's probably
(oh no!) resonant harmonics.

Something I learned here...

"brute force works fine, but you have to use enough of it".


All things have a natural vibration frequency.
When tapped, that's the note they "ring" at.
The natural resonant frequency of that thing.

Tapping on a tuning fork makes a single clear note.

Tapping on a bridge, say a column of soldiers marching
across in step, can destroy the bridge.

Two very different examples of harmonic resonance.

No way to offer specific corrections. But something to
think about?

You can't _see_ vibration. (unless it gets bad enough
that you can, but that's way too late)

But you can feel it. Fingertips and backs of the knuckles.

Generally, I'd immediately suspect long slender structures.
Especially highly stressed long slender things (like engine
pylons?)

Start her up and get her buzzing just a litle bit, and just
feel her up. Touch all her parts, and in different places.
See if you can find what's making her shake, and where she's
really excited.

(whew!)
Anyway...

That's where you'll want to stiffen it up...

The LyCon flat air cooled engines belong in museums and restored
MM-era bug smashers, nowhere else. I saw a composite biplane built to
very detailed skin perfection in one of the crappy "popular science"
magazines-it was built by some guy who works for Rutan- and I actually
started laughing out loud when I saw that stupid 1920's era
construction overgrown lawnmower engine under the cowling.

The Harley engine is obsolete and overpriced, but nowhere nearly as
much as anything nominally out of Williamsport. (I say nominally
because they don't even make anything anymore-they outsource
everything, often to the same companies that make aftermarket H-D and
Chevy parts.)

"Jim-Ed Browne" wrote in message
om...
The LyCon flat air cooled engines belong in museums and restored
MM-era bug smashers, nowhere else. I saw a composite biplane built to
very detailed skin perfection in one of the crappy "popular science"
magazines-it was built by some guy who works for Rutan- and I actually
started laughing out loud when I saw that stupid 1920's era
construction overgrown lawnmower engine under the cowling.

The Harley engine is obsolete and overpriced, but nowhere nearly as
much as anything nominally out of Williamsport. (I say nominally
because they don't even make anything anymore-they outsource
everything, often to the same companies that make aftermarket H-D and
Chevy parts.)

I missed the part where you gave us the link for the engine that is so much
better, that you've designed, built, and tested is being sold.

Rich "Inquiring mind" S.

"Richie-Pooh S." wrote in message
...
[...]
I missed the part where you [WHO?] gave us the link for the engine that is
so much
better, that you've designed, built, and tested is being sold.

Rich "Inquiring mind" S.

Try this: http://www.hog-air.com/motor-pics.htm

Lordy, lordy, I don't care for that nosegear strut. It don't seem right
not to be a taildragger.

"Jim-Ed Browne" wrote in message
om...
The LyCon flat air cooled engines belong in museums and restored
MM-era bug smashers, nowhere else. I saw a composite biplane built to
very detailed skin perfection in one of the crappy "popular science"
magazines-it was built by some guy who works for Rutan- and I actually
started laughing out loud when I saw that stupid 1920's era
construction overgrown lawnmower engine under the cowling.

The Harley engine is obsolete and overpriced, but nowhere nearly as
much as anything nominally out of Williamsport. (I say nominally
because they don't even make anything anymore-they outsource
everything, often to the same companies that make aftermarket H-D and
Chevy parts.)

All of which reminds me. I just installed 6 beautiful Millenium cylinders
by Superior in an O-300 and the pistons were made in Brazil. They were so
stamped in blue letters on their tops. The valves were made in Italy.
I'll let you know how they perform. We're getting ready to fly. I
noticed the exhaust valve guides are completely encased in the aluminum
castings, which Superior says will make them run cooler.

Now don't you go defaming Lycoming and Continental. They don't put you in
the trees like the airsoobs, vw's, gm's and fords do, except that little 65
HP Lycoming, which is better suited as a boat anchor. My own personal
experiences, of course. But I guess I'd fly behind an A-Model engine in a
low and slow Pietenpol. I have a little Continental I rebuilt in a
Taylorcraft and when I bring her in from flying she don't even drip oil.
That engine was tricked to believe it was space age, with special valves,
guides and seats but the stock 6.3 to 1 compression ratio.

I would fly behind one of those Suzuki Sprint 3-cylinders. That's a gem of
an engine in my book. It would need a good redrive, nacherly.

I had a vw nearly put me in a lake. I bounced it on the beach and had 10'
of runway behind us when we stopped, deadsticked all the way to Shiflet
Field and seized up.

Jim-Ed Browne wrote:

The LyCon flat air cooled engines belong in museums and restored
MM-era bug smashers, nowhere else. I saw a composite biplane built to
very detailed skin perfection in one of the crappy "popular science"
magazines-it was built by some guy who works for Rutan- and I actually
started laughing out loud when I saw that stupid 1920's era
construction overgrown lawnmower engine under the cowling.


Sorry JimBob,

Claiming that engines that evolved to turn propellers are obsolete
is clearly incorrect, and will be as long as they are the predominant
engines flying.

Richard Lamb wrote:

Jim-Ed Browne wrote:

The LyCon flat air cooled engines belong in museums and restored
MM-era bug smashers, nowhere else. I saw a composite biplane built to
very detailed skin perfection in one of the crappy "popular science"
magazines-it was built by some guy who works for Rutan- and I actually
started laughing out loud when I saw that stupid 1920's era
construction overgrown lawnmower engine under the cowling.


Sorry JimBob,

Claiming that engines that evolved to turn propellers are obsolete
is clearly incorrect, and will be as long as they are the predominant
engines flying.
+++++++++++++++++++++++++++++++++++++++++


JimBob is a troll...
and not a very bright one.


Barnyard BOb -