The Buck worked out so well I got a Red Rider to play with too. With the same power spring and 7/64 ID drilled out air tube it is at 365FPS at the muzzle. It may be faster because of the longer barrel. The buttstock is an adult length one I made from scrap wood and the front stock is a refinished one that came on the gun.
I was messing around with a RedRider I picked up used and abused for 5 bucks.
Quote from: jmoronic on April 02, 2021, 02:59:24 PMI was messing around with a RedRider I picked up used and abused for 5 bucks.Unless I miss my guess, you have a version that was made for about one year- 2001. The LOT. NO. will likely read xx01 xxxxx. The first 2 x's are the month, "01" is the year, 2001, and the last five are the production sequence. What I am calling a 'version' is really just a running change that was made. What makes your gun unusual is that it has a flat steel "staple" that the saddle ring attaches to, and the holes in the receiver for the staple are verticle. Before this, the holes were horizontal and these guns did not have an anti-beartrap mechanism. Your gun has the anti-beartrap. After your version, the staple became a round plastic piece, and it is still used to this day.
I'm not just blowing smoke here- that stock looks outstanding! You must have some woodworking in your background.
I first tried shimming the spring with a 5/8'' piece of aluminum tube with a washer behind it and drilled the air tube out to 7/64" to bring up the power as I saw on one thread. It worked close to the power of a custom spring but was not as smooth cocking as I wanted. The Cobalt spring was much smoother. Also removed the saw tooth anti beartrap bar, for less cocking noise, and made the spring compressing fork shown below that you push through the back of the receiver to relieve pressure on the spring retainer bar so it can be removed. The metal forks are from square shaped kabab skewers.
That's a good tool, Van. Would you happen to know the dimensions of the legs?