17 September 2009, 16:14
Philip A.Extractor's protrusion?
How much should the extractor(s) protrude from the barrels' face?
On my Heym 88 (with ejectors deactivated), they only stick out about 4mm, and I really have to catch the rim with my nails to get the rounds out.
I noticed that the cam engages the extractors quite late on opening. If it engaged almost upon opening, then the extractors would push the rounds far enough.
Any way to overcome that, short of changing the extractors?
Thanks.
18 September 2009, 19:29
MacD37quote:
Originally posted by Philip A.:
How much should the extractor(s) protrude from the barrels' face?
On my Heym 88 (with ejectors deactivated), they only stick out about 4mm, and I really have to catch the rim with my nails to get the rounds out.
I noticed that the cam engages the extractors quite late on opening. If it engaged almost upon opening, then the extractors would push the rounds far enough.
Any way to overcome that, short of changing the extractors?
Thanks.
Philip, if you have access to a tig welder you can build up the cam surface slightly,with hard surface rod, then grind it down till it lifts the extractors the amount you want, and will still opperate properly when the ejectors are enguaged!
18 September 2009, 23:34
Philip A.Mac,
Thanks. Thought of it, but was not sure if it was advisable. I'll look for a TIG welder and get to it.
Will do a couple of tries on a scrap rod first, to see if I can build up without bending things more than strictly needed!
I assume that there is such a long delay in the cam's engagement because the gun is designed as an ejector rifle, and the extractor is only supposed to move the unfired rounds just enough for you to pick them if you really want to.
19 September 2009, 03:08
MacD37quote:
Originally posted by Philip A.:
Mac,
Thanks. Thought of it, but was not sure if it was advisable. I'll look for a TIG welder and get to it.
Will do a couple of tries on a scrap rod first, to see if I can build up without bending things more than strictly needed!
I assume that there is such a long delay in the cam's engagement because the gun is designed as an ejector rifle, and the extractor is only supposed to move the unfired rounds just enough for you to pick them if you really want to.
Actually you are right that is the reason they are that way, and actually the rounds will jus slide out if you tip the rifle muzzles up with the action open with loaded rounds in the chambers. with empties you can flipp it back sharply and they will eject as well. I like the selector feature on the Heyms, and I used mine when shooting paper, and the ejectors when hunting! Check to see how close the cam is when the ejectors are selected, there may not be enough difference to allow the build up, but it is a close timing thing! The tig shouldn't heat the steel too much, They weld about as cool as is possible, and it shouldn't take too much.
19 September 2009, 10:03
Philip A.No problem with the ejector's timing, the ejector's "kickers" (no idea what's the critters' real name...) act on the end of the stem, while the extractor's cam acts on a ledge farther down the stem, so there is no interference between the two.
You have the disconnect switch, can you tell me if you think that this could be retrofitted on an existing forearm?
Thanks
19 September 2009, 19:41
MacD37quote:
Originally posted by Philip A.:
You have the disconnect switch, can you tell me if you think that this could be retrofitted on an existing forearm?
Thanks
Philip I no longr have the Heym, and it has been years since I've owned one, so I have nothing to look at to see how they are made. All my opinions are based on memory only. You might contact New GUY he is the American importer of Heym rifles, and has examples in his position that he can look at first hand. I'd also get his advice on the welding build up as well. The more info you have the better!