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Posted: Fri May 13, 2011 4:12 am
by jamie e
Ur latest slingshot rifle has made on to the philip defranko show.

Shooting circular sawblades with the slingshot

Posted: Sun May 29, 2011 11:18 am
by JoergS
Circular sawblades are about as dangerous to be shot from a slingshot as it gets. Heavy. Sharp. Unpredictable in flight.

Seems like the perfect challenge for us here at The Slingshot Channel!

It turned out quickly that rotational speed is needed in order to stabilize the flight of the blade. Otherwise it will tumble and loose speed quickly, as shown in two slow motion scenes. So a special weapon was devised that adds this rotation to the saw blade, and the effect is quite impressive.

A shot of the blade into a watermelon demonstrates the destructional potential of this slingshot invention.


Posted: Sun May 29, 2011 11:23 am
by al-xg
Haha, this gets better every time ! Amazing.

I'd be nervous about the lack of hand guard though ;)

I'm guessing you investigated ways of making the dowels detach after launch ?

Posted: Mon May 30, 2011 6:58 pm
by Fnord
Ha! I knew you wouldn't be able to resist that one! I see the video already has 18k views in one day.

Edit: some one flagged your video as "inappropriate". Must have been a been a watermelon browsing :)

Posted: Mon Jun 13, 2011 2:01 pm
by JoergS
I have made many slingshot crossbows, but all have been long and narrow - more like a modern rifle.

But this time I wanted to make a slingshot crossbow that resembles a medieval style model! Of course with rubber instead of a steel prod, and shooting balls instead of bolts. But regarding the look and lock/trigger mechanics, I wanted to follow the ancient design.

It came out very good!


Here is the video:

It shoots great, and as you can see in the slomos, the bands never touch anything - they will last a long time.

The weapon is really accurate.


Posted: Tue Jun 14, 2011 6:36 am
by JoergS
John "Gamekeeper" Webb has been selling his slingshots for quite some time now, and his designs kept improving. Therefore, it is high time that The Slingshot Channel reviews the products.

The excellent catapults are made from high grade multiplex wood, well polished and sealed with polyurethane. The bands are top notch hunting bands, capable of very hard shots.

The very affordable weapons (20 British pounds including worldwide shipping) have passed all tests with flying colors.

You can win one of these slingshots! John will directly ship the model of the winner's choice. Details in the video!


Posted: Tue Jun 14, 2011 7:22 am
by inonickname
I'm sure you know this, but having the fork closer together on the crossbow would improve performance with parallel power vectors. Two pulleys/bearings closer in would have the same effect. Nice otherwise :wink:

Posted: Sun Jun 19, 2011 12:45 am
by JoergS
Ordered some speargun rubber.

Got 16, 18 and 20 mm thickness, a meter each.

The stuff is beastly! I decided to test the "weakest" one first. 6,5mm walls, compared to 3mm walls on the already tough Thera Tube silver. Here you see TB black, silver and the 16mm speargun rubber in comparison.


Did a bandset for the medieval crossbow. The center hole is too small and the rubber is too tough for the knot in hole method, so I attached the rubber to the outside. Works fine.


Draw weight of this exceeds the 40 kg my scales can measure. I estimate it at 45 kg (about 100 lbs).

I reinforced the nut and tickler with steel because I did not trust the wood on wood method for this off the scale power. It holds fine.

It is surprisingly easy to cock the crossbow, the stirrup method rocks. Ancient weapon makers clearly knew their stuff.

It shoots absolutely frighteningly fast. My most powerful sling-x-bow for sure.

But there is room for improvement - see the 18 and 20 mm beasts in comparison... stay tuned.



Posted: Sun Jun 19, 2011 1:21 pm
by JoergS

Posted: Sun Jun 19, 2011 11:28 pm
by JoergS
Attaching a flashlight to a slingshot is not new, see Trumark's "Bat" model. But these days, a whole new kind of flashlights is available! The video shows a Fenix TK35, which throws a powerful 820 lumen beam with just eight ounces of weight. This video shows a specifically designed slingshot with a hand made mount for the TK35.


The video:

It is easy to light up your target. This video shows the destruction of yet another sparkling wine bottle in total darkness.

You can win this "one of a kind" combo! Simply go to "" and check out the official giveaway details.

You can read more about the Fenix TK35 here:


Machete Parody: German TV Trailer About Me

Posted: Mon Jun 20, 2011 8:14 am
by JoergS
A few weeks ago, a German TV team ( made a piece about me. The challenge: To build a plunger shooting slingshot! It will be aired next month, in a German science magazine called "Galileo". They will do a whole episode about plungers, and I am a part of that one.

The guys are great, we had a good time to say the least. They wanted to do a fun trailer, much like Robert Rodriguez's "Machete" with the gresat Danny Trejo as the protagonist. It came out great. Best is: They allowed me to upload the trailer to my channel, even put in English subtitles for me!

Here it is:

My wife says my bearing is more upright and I drive faster ever since I saw the piece... :)


Posted: Mon Jun 20, 2011 8:23 am
by LeMaudit
Wow! :shock:
I want to see this movie in a theater!!! I don't mind the subtitles! :D

Posted: Mon Jun 20, 2011 8:53 am
by inonickname
It's great! :lol:

Have you thought about another crack at a target slingshot?

Maybe a stabilizer? Fiber optic sights?


I'm pretty sure there's a commercial slingshot which has a stabilizer of some kind.

Some kind of device to balance the forces so the sling isn't torquing your wrist... A stabilizer would help with this also.

Posted: Mon Jun 20, 2011 10:29 am
by CpTn_lAw
That trailer is awesome :D

Posted: Mon Jun 20, 2011 10:44 am
by LeMaudit
I wonder if a slingshot could shoot a MiniBoy :scratch: hmmm... :twisted: