Posted by GillesQT on June 6, 2010, 1:38 am
Here is a photo of my first compressed air motorcycle...
It does work... with some help!
Posted by vaughn on June 16, 2010, 12:11 pm
Actually, virtually all steam engines have that feature, but it is unusual for
it to be a separate turbine. If you notice, a steam turbine is wedge shaped.
The first stages are relatively tiny, the last stages are relatively huge, yet
the turbine is typically designed so that each stage produces about the same HP
as the steam expands. The last stage exhausts into the vacuum of the condenser.
That vacuum improves the efficiency of the steam (Rankine) cycle far more than
intuition would suggest. The condenser saves the boiler feed water for reuse,
but this increase in efficiency is just as important.
In the case of triple expansion engines, the low pressure piston is many times
larger than the high pressure piston, yet probably produces about the same HP.
The LP stage is probably designed to exhaust into a vacuum, which greatly
increases the efficiency of the system.
For the curious: http://en.wikipedia.org/wiki/Rankine_cycle
Posted by vaughn on June 18, 2010, 12:15 pm
I know you can't see it, but I am holding up my coffee cup in salute to you!
Actually, our washing machine, our drier, and our 'frig are all well over 10
years old and have all been home repaired multiple times (much to my wife's
disgust, she wants new) Fortunately for us, the things that go bad (so far) are
common parts that are marketed by third parties.
Posted by vaughn on June 18, 2010, 6:24 pm
That reminds me of my ancient Briggs-powered edger of indeterminate age &
ancestry. When the 2 HP flathead engine stops smoking, you know it is time to
add oil, but it always starts and it keeps right on edging. I think I am the
only guy in the neighborhood that still uses a push-type edger. Why change
something that works?
Posted by Josepi on June 19, 2010, 1:24 am
You wouldn't own a Chev or Ford that long in this climate. When a N.AM
design is 10 years it is scrap.
I have owned two Camrys since 1994 and have spent less on maintenance and
repairs on the two of them than my 2001 Chev pickup truck I have owned for
three years. After my first Toyota, I made amistake and bought another
N.American design POS. Same mistake from 1969 - 1994 scrapping a Dodge, Chev
Blazer, Ford Van (scrapped at 4 years old, fell apart) and Oldsmobile wagon.
Won't happen again.
Oh... I had a Toyota battery crack once and replaced under partial warranty
I have had a Toyota from new for 12 years. Same exhaust, all original
rubber hoses, rear brakes, does not consume oil, etc. NOTHING has gone wrong
in 110,000 miles, apart from a battery change. It still purrs down the road
at 80mph. I used fully synthetic oil from new.