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07-03-2021, 07:45 PM | #166 |
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Re: Double Roller Trigger for Pathos handle, Ermes Sub
A roller contact diagram.
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07-04-2021, 02:08 AM | #167 |
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Re: Double Roller Trigger for Pathos handle, Ermes Sub
Unfortunately it does seem that you have one of the bad triggers. These 8mm shaft sears were cut with laser ... at 8mm lasers just don't cut straight through metal and will tend to taper a tiny bit. This tiny bit is not straight enough to ensure the tolerances required with a double roller trigger IMHO. With EDM you get 10x better precision as well as absolute straight cut. The maximum good cut with laser is maybe 6mm, but even then I would want to make the hole smaller and then ream it with a reamer to ensure perfect hole tolerance. You can improve the tolerance by simply reaming the hole to the next larger diameter hole size you can easily find a pin for. My guess is your laser cut holes are 4mm so maybe next size up would be 5mm. This would straighten out things quite a bit.
I think after your trigger batch was where Mario ditched laser cutting altogether and switched all his cuts to EDM. This allowed thicker shaft sears (10mm) and of course bigger front roller, with a 10x tighter tolerance. The latest triggers have gone one step further and are now MIM (metal injection molded) for the shaft sear and the trigger sear as well as the line release (rounded edges with to avoid shooting line damage). Also on the latest version of the trigger Mario has finally invested in custom molds that allow the mechanism box to have lateral holes punched as the mechanism is held in place in a mold. This ensures that the box left and right holes are perfectly lateral. I guess everything evolves and improves with incremental minor changes. I will see if I can put some pix of the latest version. The design is basically the same but the materials and tolerances are finally high enough for perfect function without having to tinker with the trigger. |
07-04-2021, 05:37 PM | #168 |
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Re: Double Roller Trigger for Pathos handle, Ermes Sub
Even loaded up the sear lever does not align longitudinally and rocking it laterally does not straighten it up either, so I doubt a tapered bore is responsible for the misalignment created by the pivot hole. If these holes had been drilled using a jig then they would be perpendicular. I am really surprised these were offered for sale as offsetting the nose roller's pivot pin to avoid it scraping the housing wall shows they knew that something was not right. There must be a lot more like mine.
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07-07-2021, 01:40 AM | #169 | |
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Re: Double Roller Trigger for Pathos handle, Ermes Sub
Quote:
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07-07-2021, 02:00 AM | #170 | |
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Re: Double Roller Trigger for Pathos handle, Ermes Sub
Quote:
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07-09-2021, 12:47 AM | #171 |
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Re: Double Roller Trigger for Pathos handle, Ermes Sub
I agree 100% with that! The double roller design is actually excellent, but it needs higher manufacturing tolerances for things to work as designed. To do that would mean you have to invest quite a lot of money to improve your manufacturing and tooling ... or otherwise hand tune every single trigger. I have yet to see a problematic double roller trigger that I was not able to get to work perfectly ... and the solution was always to tighten the tolerances and get it to within the design drawings (more than 100 triggers). With the old DR Long triggers it is usually about 5 minutes work to get it to work perfectly and I am disappointed and I think he should have added that extra step before shipping out any of those triggers. Fortunately Mario (owner of Ermessub) did finally invest quite a lot of money to tighten things up and the latest generation of the DR trigger is up to specs. and works perfectly without any tinkering. I would still stay away from the Pathos versions of the DR triggers as those still need to be tinkered with to get them to work perfectly.
Last edited by spearq8; 07-09-2021 at 01:01 AM. |
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