I need to clear a grove of 100ft pine trees and it just ain't
happenning. My sling shot is only making it to a height of about 70ft.
Way short.

I've built a canon from sched 40 PVC with a 4" section reduced to a to
1" section which is about 4ft long. I'm using lighter fluid and a spark
ignition. A 1" dowel weighted with 2oz of lead fits in the 2" PVC with
a close fit. This still doesn't get over the grove of trees. It seems
the lighter fluid just doesn't have enough power. Maybe I'm putting in
too much or not enough fluid. How do you know if you have the right
fuel air mix? I've heard that some use butane or propane in these.

Thanks
Bob Brunius

AC7PN wrote:
I need to clear a grove of 100ft pine trees and it just ain't
happenning. My sling shot is only making it to a height of about 70ft.
Way short.

I've built a canon from sched 40 PVC with a 4" section reduced to a to
1" section which is about 4ft long. I'm using lighter fluid and a spark
ignition. A 1" dowel weighted with 2oz of lead fits in the 2" PVC with
a close fit. This still doesn't get over the grove of trees. It seems
the lighter fluid just doesn't have enough power. Maybe I'm putting in
too much or not enough fluid. How do you know if you have the right
fuel air mix? I've heard that some use butane or propane in these.

Thanks
Bob Brunius


Is this April 1 and my calendar is incorrect--you are kidding, right?
shock-and-awe!

chuckle
Regards,
JS

chuckle
Regards,
JS
Do you need a picture?

i used a "surf rod", a fishing rod built for fishing from the beach, big and
strong. i tied about 4-5 old wheelnuts (or anything heavy), worked really
good. make sure the spool is full of fishing line first, and that its strong
line. and you may snap the line trying so you want to start small and build
up the weight.

This is presuming there is nothing/no one nearby that can be
damaged/injured.

Good luck.

Gary

"AC7PN" wrote in message
oups.com...
chuckle
Regards,
JS
Do you need a picture?

In message , Gary Smith
writes
i used a "surf rod", a fishing rod built for fishing from the beach, big and
strong. i tied about 4-5 old wheelnuts (or anything heavy), worked really
good. make sure the spool is full of fishing line first, and that its strong
line. and you may snap the line trying so you want to start small and build
up the weight.

This is presuming there is nothing/no one nearby that can be
damaged/injured.

Good luck.

Gary

"AC7PN" wrote in message
roups.com...
chuckle
Regards,
JS
Do you need a picture?



In the past (1961) I have used a bow and arrow (borrowed from an archery
enthusiast), and also a rocket (fireworks type) launched 'mortar style'
from a cardboard tube. Both pulled up linen thread (carefully coiled up
on the ground), which I then used to pull up nylon twine, then thicker
nylon etc.
Ian.
--

"AC7PN" wrote in message
oups.com...
I need to clear a grove of 100ft pine trees and it just ain't
happenning. My sling shot is only making it to a height of about 70ft.
Way short.

I've built a canon from sched 40 PVC with a 4" section reduced to a to
1" section which is about 4ft long. I'm using lighter fluid and a spark
ignition. A 1" dowel weighted with 2oz of lead fits in the 2" PVC with
a close fit. This still doesn't get over the grove of trees. It seems
the lighter fluid just doesn't have enough power. Maybe I'm putting in
too much or not enough fluid. How do you know if you have the right
fuel air mix? I've heard that some use butane or propane in these.

Thanks
Bob Brunius

Based on my last experience, I suggest that you borrow a compound hunting
cross bow
and no-point fishing arrows (they are substantially heavier) with at least a
50 lb pull.
Use a fishing reel with fishing line that is light but strong. If the line
is too light it will
probably break. Use the fishing line to pull over twine or something heavier
and
then a multicore Dacron rope. Allow for enough line to go over the "grove"
by about 3 times

I use the end ropes to support pulleys and lines through the pulleys to
support the
antennas. One pulley rope is tied off. The other has 5 8-gallon containers
of
anti-freeze that serve as the balancing counterweight for the 220 foot
antenna
of #10 copperweld that is centerfed with 600 ohm ladder line.

Regards,
Ed, N5EI

Your in the right area, but you might want to use a POTATO CANON - like the
fisherman due at the beach to get the line out a couple hundred yards.

They use a metal pipe or heavy duty plastic pipe, with 1 end buried in the
sand and a small pinhole to light it off (for safety, you could use some
kind of fuse in the hole)..

Most of them use hairspray and a piece of POTATO with the hook embedded in
it.. abt 4-5 squirts of the hairspray and the potato.

My $00.02
73's

"Edward Feustel" wrote in message
...

"AC7PN" wrote in message
oups.com...
I need to clear a grove of 100ft pine trees and it just ain't
happenning. My sling shot is only making it to a height of about 70ft.
Way short.

I've built a canon from sched 40 PVC with a 4" section reduced to a to
1" section which is about 4ft long. I'm using lighter fluid and a spark
ignition. A 1" dowel weighted with 2oz of lead fits in the 2" PVC with
a close fit. This still doesn't get over the grove of trees. It seems
the lighter fluid just doesn't have enough power. Maybe I'm putting in
too much or not enough fluid. How do you know if you have the right
fuel air mix? I've heard that some use butane or propane in these.

Thanks
Bob Brunius

Based on my last experience, I suggest that you borrow a compound hunting
cross bow
and no-point fishing arrows (they are substantially heavier) with at least
a 50 lb pull.
Use a fishing reel with fishing line that is light but strong. If the line
is too light it will
probably break. Use the fishing line to pull over twine or something
heavier and
then a multicore Dacron rope. Allow for enough line to go over the "grove"
by about 3 times

I use the end ropes to support pulleys and lines through the pulleys to
support the
antennas. One pulley rope is tied off. The other has 5 8-gallon
containers of
anti-freeze that serve as the balancing counterweight for the 220 foot
antenna
of #10 copperweld that is centerfed with 600 ohm ladder line.

Regards,
Ed, N5EI

AC7PN wrote:
chuckle
Regards,
JS
Do you need a picture?


AC7PN:

I fear for your safety. If you really are going to fire that "potato
gun", please do use the proper safety equipment and especially safety
glasses.

Frankly, any gun made out of pvc sched 40 pipe stands the hair on the
back of my head up ...

It is a free country, use caution and proceed at your own peril.

Warmest regards,
JS

local ham here with lots of trees similar found an archer in his group.

He told him what he wanted and the archer even asked what branch and
which side. Hit them all with perfect precision. Using heavy test
they then pulled small rope then larger and larger rope back and forth.

Last heavy duty rope loop had a pulley with pull rope already strung
through.

Find an archer rather than try it yourself.


Scotty W7PSK

"AC7PN" wrote in message
oups.com...
I need to clear a grove of 100ft pine trees and it just ain't
happenning. My sling shot is only making it to a height of about 70ft.
Way short.

I've built a canon from sched 40 PVC with a 4" section reduced to a to
1" section which is about 4ft long. I'm using lighter fluid and a spark
ignition. A 1" dowel weighted with 2oz of lead fits in the 2" PVC with
a close fit. This still doesn't get over the grove of trees. It seems
the lighter fluid just doesn't have enough power. Maybe I'm putting in
too much or not enough fluid. How do you know if you have the right
fuel air mix? I've heard that some use butane or propane in these.

Thanks
Bob Brunius


Bob,
When I was a kid I had a "Big Bang" cannon that used powdered carbide and
water. It used about 1/10 a teaspoon of carbide and about a half a cup of
water as soon as it quit fizzing you ignited it with a flint striker.
Ace - WH2T