[darthp]

elementpb, on 31 October 2012 - 12:43 AM, said:

darthp, on 30 October 2012 - 06:46 PM, said:

Maybe the material used for the stock bolt was cheaper, but they still found that it worked. In a $400 marker, they aren't going to put the best of the best materials into it, even if it is a reputable company like Eclipse. Hence the composite parts. Although they're still strong, it's still cheaper than aluminum. There will always be room for improvement.

Nope.
The stock bolt is titanium. It was used because its the right weight. The cost to make a bolt out of titanium is somewhere around 6-10 times as much as aluminum. Its more expensive raw material that is MUCH harder to machine.

I've been testing bolts for about 6 months now and have yet to find a better solution than the stock bolt.
I've got various bolt designs I've made with different materials (aluminum, brass, steel, etc) with weights from 20 grams up to 40 grams.

Currently my most successful design is an aluminum bolt with a brass core. the brass makes it slide like warm butter, but the trade off is a reduction in how well the antichop works.
Unless TechT has done something I just can't wrap my head around, a light etha bolt = more chops due to greater bolt speed.

Have you also used a different spring? The Techt bolt comes with a spring designed for this bolt. And Andrew's right, if you're running with your eyes on, chopping shouln't be an issue.

[Karnokr]

elementpb, on 31 October 2012 - 12:43 AM, said:

darthp, on 30 October 2012 - 06:46 PM, said:

Maybe the material used for the stock bolt was cheaper, but they still found that it worked. In a $400 marker, they aren't going to put the best of the best materials into it, even if it is a reputable company like Eclipse. Hence the composite parts. Although they're still strong, it's still cheaper than aluminum. There will always be room for improvement.

Nope.
The stock bolt is titanium. It was used because its the right weight. The cost to make a bolt out of titanium is somewhere around 6-10 times as much as aluminum. Its more expensive raw material that is MUCH harder to machine.

I've been testing bolts for about 6 months now and have yet to find a better solution than the stock bolt.
I've got various bolt designs I've made with different materials (aluminum, brass, steel, etc) with weights from 20 grams up to 40 grams.

Currently my most successful design is an aluminum bolt with a brass core. the brass makes it slide like warm butter, but the trade off is a reduction in how well the antichop works.
Unless TechT has done something I just can't wrap my head around, a light etha bolt = more chops due to greater bolt speed.

I was dumbfounded by you saying the stock bolt is titanium. I assumed it was stainless. However after doing some research, that appears to be a believable statement once you compare the weights of the 3 metals. A stainless bolt would weigh approximately 45 grams by my rough calculations. Sound about right?

In regards to the whole 'chopping' thing. I would have to think 'chopping' is not actually what's happening but more of the high bolt speed deforming and demolishing the paintball, essentially a breach break. In theory, wouldn't you need to offset the lighter bolt with a heavier spring to keep the bolt speed down? But then would the bolt guide pressure be enough to overcome the spring force? Or, maybe make the bolt guide a different length changing the bolt activation characteristics. Who knows, it's 4:30 AM and I'm tired as shit. As pretty much no one but PE, TechT and you it seems (I was following your thread over on the other forum) have done any Etha bolt research, it will be interesting to see how this bolt ends up working.

This post has been edited by Karnokr: 31 October 2012 - 03:29 AM

[darthp]

Just got my bolt the other day, I'll test it once I get some paint and a chrono.

[darthp]

For anyone interested, the MRT bolt for the Etha is pretty nice. No more vibration, shoots pretty smooth, and definitely quieter. I let my cousin use it and he was shooting from about 15 feet behind me and it just sounded like puffs of air. Can pretty much guarantee the other side of the field could barely hear it, if at all.