Re: question for MR.HTP

Single cylinder is done on engine late because its much faster process then
set up on milling machine. When using this type procedure opposite side of
the exhaust has to be balanced. Fixture is made to fit cylinder base bolts I
use  face plate instead of chuck,  fixture has clearance for moving center
line of cylinder to establish center line of a bore. Twins and triples are
done on vertical milling machine. After indicating each bore for center
line,dimensions are recorded using digital read out with 0.0005" accuracy.
Rough boring of cylinder is done first to each hole leaving about 0.003"
stock per side for finish cut. After finish cut is done cylinder is honed
with in +/- 0.0002 "accuracy. I also rework nikasile cylinders. Regardless
what carpenter imagines I'm equipped to do 100 % machining in my shop or
should I say in my trailer. LOL
PS. Boring job on milling machine requires solid boring head and feeding is
done by saddle not a spindle. One peace twin and triple cylinder heads are
also machined on vertical mill, after establishing center lines saddle is
used to come  up to a work peace with in 0.0000" accuracy using precision
indicator. Avery head has same volume automatically. Replaceable domes are
cut on manual late using tracer fixture which I made believe it or not in my
trailer shop. LOL
 Flywheels are also machined on late, triple cylinder wheel requires
additional milling between trigger magnets which is done using rotary table
on milling machine.
Cranks are inspected on late using front bearing support and rear bearing is
resting in the chuck. After crank is reworked it under goes final inspection
for indexing and TIR deflection, if front spindle is running out more then
0.0005" TIR it under go grinding procedure which removes less then 0.001"
stock, again graining  fixture is also home made by this tool maker in his
trailer shop.

When dealing with hard to find parts I make or rework them. For example if
cases are not available I will clean up parting line, and line bore crank
journals, again using in house vertical mill.made in China, how about that?
I began tool making training program back  in  70's, sense that time many
people benefited from my one on one training program. Two Stroke Engine
design and basic machining procedures in this industries I began in 1985,
sense that time number of HPT graduate students became proficient engine
designers builders, and tuners.

In 1992 I was approached by PWCI to do couple technical documents, I done 38
of them, again many people benefited from my basic program. Unfortunately
some of the so call expert tuners did not like my program which cut thru
secret bull shit which was flooding around at that time. Hence war began
which is lingering to this day.

Best way to find out what HPT Sport USA is all about is to attend my basic
or advance engine design  and machine shop program.
For the price of one blown engine, many students became excellent  engine
builders and shop owners.
For references call George
at HPT Sport USA
www.hpt-sport.com
270-898-2617




"simpleton" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> hey george, do you really do your honing on a bridgeport?
> what are you using to bore cylinders?  a boring head on a mill or do you
do
> it on a lathe?
> i have always been curious about this.
> simpleton
>
>