Help! Classic / Emag sear differences.....

[cgrieves]

Just bought an Emag valve with Level 10 to fit my classic 'mag (Thanks Kilauekid!)

Using air and 750psi input pressure the maker won't fire, and the trigger pull seems pretty hard. I suspected the L10 at first so removed it and installed a standard bolt, but exactly the same symptoms so I now suspect the classic sear isn't releasing the bolt....

Can anyone give me an idea what the differences are between a classic and Emag sear, so I can get grinding?

Cheers,
Corin.

[yagrmiestr]

Did you swap on/off assemblies?? If not...

I think you're best bet is to get a retro valve on/off assembly from AGD. It has a longer on/off pin (.750 vs .712) and uses 2 orings instead of the special quad o-ring in the emag. Yeah, it sucks having to shell out $28 for a new on/off, but it's better than screwing up your sear and then having to buy a new on/off and new sear. Maybe you can sell or trade your emag on/off assembly.

Look at these pictures...

Emag On/Off
Retro On/Off
Classic Sear
Emag Sear

[cgrieves]

Thanks for the reply, but I've got the .750 pin (Kilauekid knew I was fitting the valve to a classic mag and kindly included it), but even with the stock bolt the sear doesn't seem to want to release the bolt.....

I also tried several different trigger rod settings, not joy.... any other suggestions? Will the Emag on/off work with the classic mag and a .750 pin?

Should I try grinding off the sear catch or am I barking up the wrong tree?... I have a spare sear (somewhere!)

[yagrmiestr]

You have the correct on/off pin length then, I don't think the quad oring would cause it not to fire. As long as it's not leaking it's probably alright. If Kilauekid picked up a xvalve he probably just swapped the on/offs before he sold it to you. (So you may not even have the quad oring on/off)

The sear I got with my xvalve was the same as the one I had in my 97' minimag (the newer one had some extra material cut out, but was the same in all the contact points).

Have you tried turning up the velocity or input pressure a little?? Does the trigger feel "mushy"? Is the trigger rod the stock length??

I'd shy away from grinding the sear, but if all else fails and you if have a spare one...

Maybe someone else has some ideas.....

[cgrieves]

Interestingly, I tried a normal Automag on/off assembly and the gun fired (albeit with a really hard trigger pull as expected). So I tried the Emag pin with the Emag on/off assembly but using normal "O ring" style automag on/off top o-rings (rather than the quad style).

Result is the gun fired! I guess the Emag pin wasn't coming right out of the Quad o-ring due to it's flat surface: Round Orings let the pin "release" correctly. We tried a few balls but they were inconsistent over the chrony. Tried tuning but we've lost the light for today. I'll fit a spares kit and we'll see how it fares tomorrow morning (at the field!)

Does anyone anticipate any problems using normal on/off o-rings with the Emag assembly?

Also if I were to shorten the pin, am I right in thinking I need to grind the top (larger) portion of the pin?

Thanks for the ideas,
Corin.

[Tunaman]

Originally posted by cgrieves
Interestingly, I tried a normal Automag on/off assembly and the gun fired (albeit with a really hard trigger pull as expected). So I tried the Emag pin with the Emag on/off assembly but using normal "O ring" style automag on/off top o-rings (rather than the quad style).

Result is the gun fired! I guess the Emag pin wasn't coming right out of the Quad o-ring due to it's flat surface: Round Orings let the pin "release" correctly. We tried a few balls but they were inconsistent over the chrony. Tried tuning but we've lost the light for today. I'll fit a spares kit and we'll see how it fares tomorrow morning (at the field!)

Does anyone anticipate any problems using normal on/off o-rings with the Emag assembly?

Also if I were to shorten the pin, am I right in thinking I need to grind the top (larger) portion of the pin?

Thanks for the ideas,
Corin.

Don't grind the fat end of the pin.