Some time back I purchased an old Spyder TL from 440COMMANDO. I originally bought it for the BM regulator, but was intrigued by his goal of a low pressure Spyder. I couldn’t let his ambitions go to waste, so to bypass cycling problems I decided to pump it. 
Above is the sales pic and the way it came to me. Now to the cutting and stuff.
Above is the disaster in infancy and a trade pitch picture for a gent who was selling a Karnivor. He refused, his loss... Begin list!
1) Trilogy pump kit found on eBay
2) Delrin to make sled and pump arm riser
3) Valve stem or just use JB Weld.
4) Cutting wheels for rotary tool
5) Bolt and bits
6) Files, saws, vice, and other tools to make life easier.
7) Whatever else I missed.
Above is some raw material I ordered to make a sled and riser. You can see the finished riser and roughed out sled. I used a crappy Forstner bit sized 45/64” to cut the hole for the bolt. Purchased off Amazon, that size was the closest to the bolt diameter. If you use this method, the bit will need to be sharpened.
Whoopsies!
One of those cases where I measured once and cut twice. The bolt rested too far forward, potentially causing a gas transfer problem. I cut an o-ring and glued into place for now. I may make a new sled later to fix this mess. So don’t make my mistake, learn from this moment, people will laugh at you...
HAMMER TIME!
Arguably the “worst” part, if you don’t anneal the hammer first. You can do this with a MAP gas torch and fire brick, I treated this thing in my fireplace since the weather was cold and my wood stove was fired up and toasty. Placed the hammer in a bed of coals, increased airflow and waited till orange hot. Pulled from the heat and let slowly cool then repeated another time until a file would cut through the surface. Once cold and soft, I filed a flat then drilled 1/4” holes to reduce cutting time. After drilling, I used my rotary tool with reinforced cutoff wheels to cut the groove. I finished with small stones and a file to break any sharp edges. Test for fit and travel, valve stem compresses far enough, toss hammer back into inferno till orange hot and quench in room temp water or oil (water worked best for me). Once the scale is removed, a file should skate over the surface, if not, then repeat. This method will save you time, grief and money in worn out cutters and stones. If you have a local machinist, anneal the hammer before sending out. Some guys won’t cut hardened steel or will charge extra.
Above is the sales pic and the way it came to me. Now to the cutting and stuff.
Above is the disaster in infancy and a trade pitch picture for a gent who was selling a Karnivor. He refused, his loss... Begin list!
1) Trilogy pump kit found on eBay
2) Delrin to make sled and pump arm riser
3) Valve stem or just use JB Weld.
4) Cutting wheels for rotary tool
5) Bolt and bits
6) Files, saws, vice, and other tools to make life easier.
7) Whatever else I missed.
Above is some raw material I ordered to make a sled and riser. You can see the finished riser and roughed out sled. I used a crappy Forstner bit sized 45/64” to cut the hole for the bolt. Purchased off Amazon, that size was the closest to the bolt diameter. If you use this method, the bit will need to be sharpened.
Whoopsies!
One of those cases where I measured once and cut twice. The bolt rested too far forward, potentially causing a gas transfer problem. I cut an o-ring and glued into place for now. I may make a new sled later to fix this mess. So don’t make my mistake, learn from this moment, people will laugh at you...
HAMMER TIME!
Arguably the “worst” part, if you don’t anneal the hammer first. You can do this with a MAP gas torch and fire brick, I treated this thing in my fireplace since the weather was cold and my wood stove was fired up and toasty. Placed the hammer in a bed of coals, increased airflow and waited till orange hot. Pulled from the heat and let slowly cool then repeated another time until a file would cut through the surface. Once cold and soft, I filed a flat then drilled 1/4” holes to reduce cutting time. After drilling, I used my rotary tool with reinforced cutoff wheels to cut the groove. I finished with small stones and a file to break any sharp edges. Test for fit and travel, valve stem compresses far enough, toss hammer back into inferno till orange hot and quench in room temp water or oil (water worked best for me). Once the scale is removed, a file should skate over the surface, if not, then repeat. This method will save you time, grief and money in worn out cutters and stones. If you have a local machinist, anneal the hammer before sending out. Some guys won’t cut hardened steel or will charge extra.
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