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 Post subject: Home made 1377 parts
PostPosted: Thu Jun 04, 2015 6:53 pm 
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Joined: Thu May 07, 2015 8:30 pm
Posts: 1190
Location: Eastern Townships
I'm currently building a trigger system for my 1377 pistol. I'm doing it in stainless steel and bronze. Of course, I have some questions :?: :) .Will I be OK with a stainless steel sear, or should I build it in hardened and tempered steel?


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 Post subject: Re: Home made 1377 parts
PostPosted: Thu Jun 04, 2015 7:32 pm 
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Joined: Thu Oct 13, 2005 4:20 pm
Posts: 1549
Location: sherwood park
Only the sear where it contacts the hammer should be hardened. Even the stock ones are I think. But if you sand and polish them down they will still wear a little.
looks good though!


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 Post subject: Re: Home made 1377 parts
PostPosted: Thu Jun 04, 2015 8:11 pm 
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Joined: Thu May 07, 2015 8:30 pm
Posts: 1190
Location: Eastern Townships
Thanks Killercrow!
I will probably grind the 'hump' on the sear lever I made and replace it with a hardened steel insert. Does anyone knows if a grade 8 bolt has enough carbon in it to harden and temper it? If not, any suggestions?


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 Post subject: Re: Home made 1377 parts
PostPosted: Thu Jun 04, 2015 8:43 pm 
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Joined: Wed Feb 17, 2010 6:04 pm
Posts: 841
Location: Nova Scotia
airmec wrote:
Does anyone knows if a grade 8 bolt has enough carbon in it to harden and temper it? If not, any suggestions?

I don't know about a bolt but a piece of drill rod is designed to be hardened as required.


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 Post subject: Re: Home made 1377 parts
PostPosted: Thu Jun 04, 2015 10:20 pm 
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Joined: Sun Jul 15, 2012 10:49 am
Posts: 6029
Location: Victoria, BC and Clarkston, WA
Looks good. It also applies the 2240!

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Pardini K10
Brocock Concept .22
3 Custom Crosman 2260
Benjamin Discovery .22 w/Joe Hickey stock!
Crosman 150 pistol .22
4 Crosman MK 1 pistol .22
Mrodair CP-1M .22 and .177


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 Post subject: Re: Home made 1377 parts
PostPosted: Thu Jun 04, 2015 10:34 pm 
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Joined: Thu May 07, 2015 8:30 pm
Posts: 1190
Location: Eastern Townships
Thanks Watertown, if the stainless sear doesn't work to my taste, I will try with a piece of drill rod. I just learned the basics of heat treating for steel, that would be a good exercise!

Thanks Rrdstarr! Unfortunately, I don't know much about the 2240, but I know some Crosman air guns share some parts. That trigger will be a ''wannabe'' 2-stages, I have good hope it's gonna be better than the original. I also plan to build an adjuster for the sear spring.


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 Post subject: Re: Home made 1377 parts
PostPosted: Thu Jun 04, 2015 11:18 pm 
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Joined: Mon Feb 11, 2013 12:46 am
Posts: 4176
interesting set up 8)

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 Post subject: Re: Home made 1377 parts
PostPosted: Sat Jun 06, 2015 7:42 am 
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Joined: Thu May 07, 2015 8:30 pm
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Location: Eastern Townships
Thanks Ace, sorry for the delayed reply. I'm still 'young' on the forum, but I guess I can say you know your stuff :) . Have any advice? It would be greatly appreciated!


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 Post subject: Re: Home made 1377 parts
PostPosted: Sat Jun 06, 2015 9:37 am 
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you pretty much answered your own question above...you should be good with the stainless but the hardened steel will definitely last longer and be lot less susceptible to wear throughout the years of use... :wink:
just make sure the sear catch is at the proper angle...

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 Post subject: Re: Home made 1377 parts
PostPosted: Sat Jun 06, 2015 2:07 pm 
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Posts: 1190
Location: Eastern Townships
Well thanks a lot for the recommendation, Ace. This setup is my first try at a better trigger, probably not the last. I plan anyway to build a hardened steel sear in a near future. For now, I'm almost finished with the trigger mods. I installed a softer spring on the sear for testing and put it together; the action is so better, reminds me of my Xisico pistol :D . I kept the ramp angle the same as the original, seems to be the way to go. I also hope to get better grouping.


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 Post subject: Re: Home made 1377 parts
PostPosted: Sat Jun 06, 2015 2:42 pm 
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Location: Victoria, BC and Clarkston, WA
All you need now is a reduced sear spring. Enough to make sure it resets the trigger. Also you could probably make a sear spring guide like this. I make mine of Delrin or brass.
http://scopesandammo.com/storefront/product_info.php/crosman-13xx17xx22xx-adjustable-trigger-spring-p-426

This one is adjustable. I made one similar to it in brass. Finding a lighter spring is the hard part.

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-Rick
Pardini K10
Brocock Concept .22
3 Custom Crosman 2260
Benjamin Discovery .22 w/Joe Hickey stock!
Crosman 150 pistol .22
4 Crosman MK 1 pistol .22
Mrodair CP-1M .22 and .177


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 Post subject: Re: Home made 1377 parts
PostPosted: Sat Jun 06, 2015 8:36 pm 
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Joined: Thu May 07, 2015 8:30 pm
Posts: 1190
Location: Eastern Townships
:D rrdstarr, my adjuster is done! Did it this afternoon. All my parts are done, only a little polishing left. I bought a spring of correct size at my local hardware store (0.95$), about 3/16'' shorter than the original, perfect fit with the adjuster. Can't wait to try it!


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 Post subject: Re: Home made 1377 parts
PostPosted: Sat Jun 06, 2015 8:44 pm 
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Joined: Wed Feb 17, 2010 6:04 pm
Posts: 841
Location: Nova Scotia
airmec wrote:
All my parts are done, only a little polishing left.

Looking good, nice when a plan comes together.


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 Post subject: Re: Home made 1377 parts
PostPosted: Sat Jun 06, 2015 8:54 pm 
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Joined: Thu May 07, 2015 8:30 pm
Posts: 1190
Location: Eastern Townships
It's only the first part of the plan, there's more bronze, stainless and also wood to come... :wink: .


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 Post subject: Re: Home made 1377 parts
PostPosted: Sat Jun 06, 2015 11:20 pm 
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Joined: Mon Feb 11, 2013 12:46 am
Posts: 4176
looking good airmec ...if I can make one recommendation.. you don't need that extra trigger return spring that you made....
the sear return spring is more then enough...and your trigger will feel even better... :wink:
also if you feel you must use the extra trigger spring...is your safety functional ?
if its not and you don't plan on using the safety then you can just place an extra little spring above the trigger...like in the pic....


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