|
Dear Subscriber:
|
Hey MotoMan !
Your newsletter is the absolute best ! I look forward to every
issue.
Had a bit of a problem this month (Aug), I think I missed it.
Turns out those evil-doers at Hotmail re-configured their system and I think this may have caused the Power newsletter to be filtered out as, gasp !!!, junkmail. Have you heard from anyone else about this problem? Anyway, I've changed the settings so this can't happen again. If you could resend the August letter to me I would really appreciate it.
Keep up the good work Pat !
~ Rob
Hi Rob !
Thanks for the good words !! Actually, my e - mailbox has been filled with
similar tales of Power News
withdrawal !!
... And...
I plead guilty !!
I've been busy with silly problems like moving to
another house and doing motor work. Lame excuses, I agree....
Don't worry my friend, I'll make sure the next issue of
Power News really kicks
it back into gear !!
Thanx Rob !!!
~MotoMan
In The 2 Past Issues...
We've seen that 2 of the factory superbikes have got some serious
problems !!
Both of these bikes have aerodynamic problems caused by the direction their
exhaust is pointing. The Harley points it's exhaust up, and the
Kawasaki is it
pointing up and to the right...
What's the best way to point the
exhaust ?? Here's an interesting photo of the correct 5 degree pipe angle
(Featuring
Schmidtastic's famous passenger.... )
|
|
The Idea In the last issue we learned that this affects the This issue is all about: "The Closely
Related Problem" I've been asking about ... !! |
More "Invisible" Power Loss
!!
Q: Where does the
energy that's being used to enlarge & deform
the Harley's aerodynamic form come from ??
A: The Engine !!
Just as the exhaust is disrupting the bike's aerodynamics, the aerodynamics
problem is costing the engine real horsepower !!!
Since the engine is an air pump, it's using an amazing amount of energy to
de-form the aerodynamic wake behind it. The piston has to push the exhaust
out against the natural flow of air behind the moving bike.
This is Another Example of Why Speed
Isn't Directly Connected to Dyno Readings
The Harley & Kawasaki
superbikes may make "X" amount of power on a dyno, yet their actual
Dynamic Power is
progressively reduced as they reach top speed on the racetrack.
In the real world, Dynamic Power is all that matters... (unless you're
just "bench racing"...) :)
Another Way of Thinking About It ...
Ram Air Induction helps an engine make more horsepower as it increases it's
speed, by forcing positive air pressure into the engine.
At the back of the bike, when the exhaust
is pointing the wrong direction, the engine will make less power as
it increases speed !!
It's a type of "Reverse Ram Air"
Taking It One Step Further:
By purposely pointing the exhaust gasses exactly
into the center of the aerodynamic draft created by the bike, the exhaust
will be sucked out, and the engine doesn't have to work as hard.
It's "free" power.
That's Right .... Now even Britney Spears
All she has to do is; ...about 10 degrees !!! Ouch ...
|
Breaking News: Harley's
Quitting Superbike Racing in 2002 ???
Harley Engineers:
Don't Give Up !!
Just Take A Little Break, Keep Reading Power News, and Before
Long, You'll Be Ready To Go For It !!
All the horsepower secrets
you'll need to easily win are contained in the upcoming issues !!
Future Power News Topics:
How Does a Four Stroke Engine Really
Work ?? Power Curves for Motorcycles MotoMan's Toolbox Intake and Exhaust Porting Valves & Valve Jobs Milling & Compression Degreeing Cams Loose Bolts & Other Mistakes Cylinder Boring & Honing Piston Rings and Installation Dyno Testing Jetting Fuel Injection Connecting Rods, Bearings and
Clearances Piston to Valve & Head Clearances Cryogenics Camshaft Designs Wrenching Without a Manual Troubleshooting Snake Oils Ignition Timing Fork Setup Shocks Ceramics Anti Friction Tricks Crank Lightening & Flywheel Effect Valve Clearances & Adjustments Wheel Bearings Chains & Sprockets Gearing Freshen up Chassis set up Fuels Clutches Air Filters |
MotoMan Says:
Open an B u d w e i e
" |
Learn How to Do it Yourself:
Smaller Intake Ports Gain 7 % More Power
|