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Elevating scope mount

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Elevating scope mount

Unread postAuthor: Procyon » Tue Nov 10, 2009 7:10 am

Below are some pics for a thumb operated self-elevating scope mount. The range is from 0 to 30 degrees. There are notches cut out at 5-10-20-30 degrees that click at those points so you can tell by feel without looking what elevation your at. It's mounted on the top barrel support for the 7 shot semi revolver I'm working on. Made out of 1/2" channel, a scrape of plastic deck lumber a spring and some pins, total cost without the scope is about $2.
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Unread postAuthor: POLAND_SPUD » Tue Nov 10, 2009 9:36 am

now you just have to add a laser range-finder that will measure the distance and a couple of servos that will automatically adjust the aiming point :D
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Unread postAuthor: grock » Tue Nov 10, 2009 12:05 pm

cool design. and nice cat
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Unread postAuthor: dewey-1 » Tue Nov 10, 2009 12:07 pm

The concept is great!

You need to have a more practical angles of elevation of maybe 0 to 6 degrees.
Anymore than that you can't keep the target in field of scope view.

Increments of .5 degrees would be nice.

I will work out the max numbers.
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Unread postAuthor: Tsukiten » Tue Nov 10, 2009 12:17 pm

Purrrrrractical.
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Unread postAuthor: Technician1002 » Tue Nov 10, 2009 12:35 pm

As an FYI, there is no reason the scope has to be mounted on the top of the barrel. A side mount works fine on long morter barrels.. :D
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Unread postAuthor: Procyon » Tue Nov 10, 2009 1:00 pm

This site is fully adjustable at all angles up to 30 degrees including 0-5. there is just a set click at certain angles. My driveway is 600' long and we are already shooting spuds into the neighbor's cornfield across the road from our deck. I am expecting the gun I'm working on now to be a bit more powerful and will be working towards accurate groupings a 100 yards at the range with sabot rounds. Besides it looks cool on the gun.

The cat thanks you for the kind comments.
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Unread postAuthor: Hubb » Tue Nov 10, 2009 1:07 pm

I've proposed a similar devise to be used in paintball. A user on another forum built a homemade adjustable drop forward and I thought it could be applied (with a few changes, of course) into an adjustable raised sight rail.

I haven't taken this any further than just a thought, but here is a pic of this user's homemade drop forward (for those of you who don't know, the drop forward is the metallic part on the bottom of the grip):
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Unread postAuthor: dewey-1 » Tue Nov 10, 2009 1:40 pm

Here are some drawings I made for a similar idea.
It's not complete yet due to still doing thumbscrew type adjustment.
The fist one shows 6 degrees and other at 3 degrees.
Run the elevation numbers in degrees to see your distance changes for your launcher at 1-7 increments.

you understand what I meant about not seeing your target through scope at greater than 6 degrees?
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Unread postAuthor: Procyon » Tue Nov 10, 2009 1:55 pm

I guess I don't know. The centerline of the scope is 4" above the top of the barrel. At 25 degrees the red dot appears where the bead of a shotgun would be.

Nice drawings and that drop forward is pretty slick.
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Unread postAuthor: POLAND_SPUD » Tue Nov 10, 2009 2:23 pm

@dewey
shouldn't it elevate the other way round ??

pilot side it to the right, right ?? :)
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Unread postAuthor: Gippeto » Tue Nov 10, 2009 2:52 pm

Forward slope scope bases aren't a new idea, but they are a good one. :)

The original...and still the best.

http://www.nearmfg.com/
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Unread postAuthor: dewey-1 » Tue Nov 10, 2009 2:55 pm

Here is what mean by field of view. This is a 9 degrees. Line of sight
may be blocked by bottom front of scope.

Poland Spud; I could very well have it bassackwards!
Bow sights, scopes and open sights always get me confused.

Now I have to rethink it!
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Milkor sight

Unread postAuthor: Procyon » Tue Nov 10, 2009 4:18 pm

I get it now. Below is a pic of what I'm going for, just with a different approach. Unlike a rifle, as the elevation is increased the head is raised to keep the line of site on the scope. The soldier in the pic looks like he has his set at around 15 degrees or so.
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Unread postAuthor: POLAND_SPUD » Tue Nov 10, 2009 4:24 pm

Line of sight
may be blocked by bottom front of scope
well yeah but if I understand the idea correctly the sight stays pointed at the target/levelled but you adjust the elevation of the gun

@procyon
It would be a good idea to add a some kind of dial that will show the exact angle

you might as well build a mount that will automatically keep the scope levelled... so no matter how much the barrel is elevated the scope is horizontal

of course that makes sense assuming that you're going to shoot stuff more less on the same level as you are - (i.e. on the ground)
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