Fun Weekend Project
This Ultra-light crossbow turned out to be
quit nimble, producing over 1000fps.
with a 150grn bolt.
Specs
Total weight..................................aprox. 1-3/4 lbs
Bow.................. 35 lbs draw weight @ 36" width
Trigger pull....................................................8 lbs.
Velocity.............................................over 1200fps
Bolts...3/8" dowel 18" long @ 150Grn./10grams
Max Range....................... straight up over 300ft.
Max effective killing range....................... 100ft
This is the second bow in a project that began as an attempt to reproduce and enhance a Filipino Crossbow
I purchased from a shop in Alongapo City.
I purchased from a shop in Alongapo City.
(To see the complete process click photo)
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While the first crossbow was drying it's finial coat of finish
I had the time to cut out and begin shaping the new stock.
This one I wanted something similar to a Dragunov style.
Stock Dimensions
When cutting the butt stop short in order to leave enough
for the grip. I used the band-saw for all the basic shaping
and a hand router to hollow out the butt.
Unlike the Dragunov I wanted a pistol grip just a bit more trim
so "I modeled it after an M-16 grip I had laying around.
It was really taking shape.
(I got photo bombed by the dog toy)
Fire control system
Detail
(Disregard this stock detail when making Ultra light model)
In setting up the the Fire control system I opted to reinforce
the pin holes with flared copper tubing which also
improved the trigger pull.
(note the rough cut trigger and pins)
It takes some minor tweaking of the wire to make it
rise and fall smoothly.
(Used 1/8" welding rod)
(Used 1/8" welding rod)
Trying out a combo bolt stay and rear sight while setting
the pin height to allow plenty of room for string clearance.
The bow was made from a 1"x 2" Red Oak
and cut out on the band saw, here are the rough cut dimensions.
Using a wood rasp, hand files and power sander the bow was
shaped, to these final dimensions.
Instead of spinning my own bow string I decided to
test out the retractable dog leash.
It was a great improvement but it still stretched a little bit.
test out the retractable dog leash.
It was a great improvement but it still stretched a little bit.
This is what happened when I decided to exchange
bows with out adjusting the string tension.
The bow was done-for but I was able to repair the stock
with some glue and screws.
(Clink Link below for Video)
After several hundred rounds fired the string has
stretch a little and the bow relaxed some, yet
it still fires over 1200fps.
