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Question to roller gun users and other smart people . . . .

Thread Status: Hello , There was no answer in this thread for more than 60 days.
It can take a long time to get an up-to-date response or contact with relevant users.

parker

Well-Known Member
Jan 23, 2006
7
3
88
I'm wanting to convert my railgun to a roller, but I'm not clear in my mind how it will all work. For simple numbers sake, let's say the barrel is 40" long. Leaving space enough for a reel, I figure the longest band stretch I could get is 40" on top, plus 30" beneath, equals 70" total. Dividing 70" by 3.5 (max stretch factor) yields 20" bands (right and left.)

To load the gun, my guess is that I start with the bottom portion of the bands slack against the muzzle -- then load from the top of the gun as if it were a "normal" railgun -- then turn the gun upside down and somehow grab the cord between the right and left bands (that is now stretched tight against the muzzle) and pull it back to the fully loaded position. Does that sound about right?

Will I need to wrap the shooting line any special way? BTW my gun (Aimrite) has a side release for the shooting line - and remember I use a reel, if that matters.

Oh, and is it okay to continue to use notched spearshafts, or will I need to get fin tabbed shafts? With a notched shaft, I'm wondering whether when the gun is fired and the wishbone stops tight against the muzzle guard (or whatever it's called) will that tweak the travel of the spear shaft slightly as the wishbone slides out from the spear notch? I think that would not be a concern with a tabbed shaft. Am I overthinking this?

Thanks in advance for your insights and taking time to explain to me.
 
Ive tried converting a rail gun into a rollergun but it was such a hassle. I got lots of help from Alemanni & Seawulf but the gun never performed the way it should have. Rollerguns should be heavy to absorb most of the recoil. Rollerguns also tend to have a low trajectory as the gun will lift and hit the rear of the shaft causing it to go downwards. But, all that being said I love rollerguns but it takes a lot of tinkering and frustrating tests. Ive even used slow motion recordings of my gun to see what is going wrong.

If you're going for mono, use at least a 7mm shaft and 16mm bands at 350-380 band stretch (natural latex bands).
If you're using a double setup, 14mm bands will be the best choice.

If you need any help PM me, ill assist you as much as I can from my previous experiences.

Good luck


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