That o-ring could last even longer than 20k rounds, I don't know. The cylinders out there only became available last August, so for us, I don't know how many people have that many rounds through them from then until now. I know for a fact that Viton would be a poorer o-ring to use there, but all their new cylinders and rebuild kits come with the polyurethane anyway.
Quote:
Originally Posted by m102404
Too bad they left one of the circuit boards exposed (blue horizontal one), I guess there just wasn't enough space.
The optical counter mech is neat, but won't grease, flung off the gear, land smack on the board? Maybe I should use less grease....
|
That blue circuit board looks like the heatsink for the FETs. A solid aliminum heatsink would be more mass than a cast alloy mechbox shell, and it eliminates the problem of opening the mechbox and having to disturb the FETs.
The sensor problem with grease contamination is not a new problem for the PTW. Even Gen 1 guns had this problem. Currently in the M4, you can remove the EL-001 board and clean then sensors in about 5 minutes (if you're slow), as well as clean out the holes in the sector gear. Being sealed up in the mechbox shell does not make this job easy.