...My 135 honks pretty bad, even with little quarter-cockings. I can literally feel the piston seal dragging along the receiver wall, creating a bit of chatter. Seems my Hatty is bone dry inside. Never been inside a 135, but I've torn down, tuned and reassembled a bunch of other makes' models. ...
Food for thought you have there, Mikey!I can tell my 135 behaves really nice so far: it isn't loud, it doesn't kick or shake - if anything, I'm surprised how smooth the gun is. Would this be the case if the piston seal wasn't sealing properly?Having a faulty piston seal seems the expected condition of these 135's, all the way from the later 2000's when they first appeared on the European market. I don't have extra piston seals for the 135 at hand, and they are not available locally. So, tearing the gun down now would mean at least a two-week fallow period, with regards to breaking the gun in. At the same time, I would lose the opportunity to get chrono data off the gun as bought. I reckon you would not recommend shooting the gun at all with the potentially leaky piston seal.
Quote from: mikeyb on February 16, 2021, 10:51:05 PM….The Mod135 also had a freakishly long "pinggggg" after each shot....I've got a pair of the Hatsan 125 Vortex QE. 22 cal, and 25 cal. The 22 is a solid thump, and quiet. The 25 is a solid thump, and that long piiiiing.Maybe I'll try something to dampen vibration on the cocking arm.
….The Mod135 also had a freakishly long "pinggggg" after each shot....
Quote from: MontanaMarine on February 16, 2021, 11:16:27 PMQuote from: mikeyb on February 16, 2021, 10:51:05 PM….The Mod135 also had a freakishly long "pinggggg" after each shot....I've got a pair of the Hatsan 125 Vortex QE. 22 cal, and 25 cal. The 22 is a solid thump, and quiet. The 25 is a solid thump, and that long piiiiing.Maybe I'll try something to dampen vibration on the cocking arm.If my ping had persisted I was thinking a layer of electrical tape wrapped around the link might be enough to dampen the vibration without interfering with the cocking stroke. I have NOT tested that so it may not have any affect. If you do find a good dampening solution, please let us know! Thanks
Ya, I'd like to know why of it was me. Maybe some guys just like to covert. It's not like you can't go back if you had the itch to do so.Anyway in the end spring or ram as long as it works as expected and a solid shooter is all I hard required, right?
Mike? Take a look at both listings on the Vortek site. If I'm reading right, both are supposed to be exact copies of the Hatsan OEM springs and from counting coils on the one listed for the 135, it matches the 44 you counted on your in-hand spring. I came up with a 29 count for the one listed for the 125 so the random lame guess is while ID/OD may be the same, coil length is the difference???Link to get there easier: http://vortekproducts.com/ourstore/airgun_springs?product_id=256The brain is also still stuck on the idea that you have a long, hollow metal piston that just got smacked by a piston shaft with something to the tune of almost 1900 psi. Would seem at least one of them is going to make some kind of ringing noise. I've done lube tunes and still get the ping even with a layer of poly epoxy between the end of that cocking arm and the piston and likely why that idea is stuck in the noggin.
Couple years old but one guy's thoughts on what might cause the ping and some other things he did. Rifle he was working on was a Turkish built Webley Patriot but it's the same thing as the Hatty 135 and maybe more food for thought:http://anotherairgunblog.blogspot.com/search/label/Hatsanhttp://anotherairgunblog.blogspot.com/search/label/webley
...I understand Hatsan MAY be assigning secondary part numbers specific to a rifle and its caliber, but some of these parts ARE the same in both rifles.I can confirm by measurement that parts 488,489,490,499 are identical in both my Mod125 and Mod135 spring rifles. ...