DIY SCOPE REPAIR PART I
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- Опубліковано 27 тра 2024
- DIY SCOPE REPAIR is a 3 part video in which I demonstrate the disassembly, repair and adjustment of a variable magnification rifle scope. The video covers the entire scope including how to disassemble the erector as well as pointing out problems that may affect accuracy. I also describe how to make the specialized tools needed from materials that you may already have in the shop or garage. While it’s impossible to cover every scope design this video will give you a general knowledge of the inner workings of a scope and how it is assembled. Like me you may have to learn some things through trial and error. Part I covers disassembly. Thanks for watching!
• DIY SCOPE REPAIR PART II
• DIY SCOPE REPAIR PART III
• Osprey 3 - 9 X 42 Rifl...
I installed this optic on a crossman 760 air rifle.I have now shot the riffle around 500 times during target/plinking practice, and the ua-cam.com/users/postUgkxc4K63Fd5LglDMObu7-Bgapxp_ef0W8hE scope has done well.With this optic, I have neutralized around 30 pigeons that were invading one of my buildings.For my short range air rifle, I will continue to use this scope, but will be upgrading to a more powerful scope, when I buy a more powerful air rifle, in order to shoot at longer distance.For the money I have spent, this scope has truly been a great buy.
Thanks. Good to know.
This man can do it ALL! The one true Jack of All Trades
Very clear disassembly and explanation of an average scope. Thank you sir. You are a gentleman and a scholar.
You're quite welcome. Thanks for watching.
Thank you for taking the time to make these videos, they are very clear, helpful and informative. I don't know if I have the patience to carry out such a repair but I have a few broken scopes that I've nothing to lose giving it a try.
Good luck to you!
Great video!!! Thanks for the knowledge.
Thanks and you're welcome.
Very informative video.
Thanks so much for sharing your knowledge 👍
Thanks
Very informative. Thank you.
Thanks
Thanks for the great videos, Kenneth. Yesterday my BSA 3-12×50 took a turn for the worse. It is only crystal clear when I'm on 6 power, but nothing else. Every other power is blurry when I adjust the magnification ring. Do you have any idea how I can remedy this? Thanks again
Thanks for watching! I've never experienced the failure you describe but I will venture a guess. Possibly one of the screws with the bushings that moves the lens in the erector has fallen out. Sounds like only one lens is moving causing the out of focus issue. If you shake the scope you may hear it rattle. Again just an educated guess from a diy guy.
@Kenneth Dellinger Thank you very much for your reply. I haven't shaken it yet to see if I hear a rattle, but I will give that a try. I think you nailed it with it being just one lens moving. It was very wet and freezing when I tried adjusting it. There wasn't any obvious give at any point leading me to think that I sheared anything, but it seemed much stiffer than usual when trying to adjust the power ring. I think I'll give it until after my hunt and just use my 6 power for the time being so I don't have to resight in my rifle. I have a great place to start looking now after I harvest my deer. Thanks again for your expertise even if you say it's just an educated guess from what I'd consider a VERY knowledgeable DIY guy.
@@badgthom You're welcome. Good luck!
I have a cheap tasco I had got for a air rifle and the thing... seemingly for no reason, has become real blurry. I noticed that if i tapped the scope against something solid it would sometimes resolve it but as soon as I take another shot, it was blurred again. So seemingly something is reacting to like the physical force of being jerked around and going out of focus somehow
Sounds like something has come loose inside. Nothing to lose in tearing apart an inexpensive scope. Give it a try.
I'm impressed with your diy knowledge and know how with working on these scopes. I have a question for you, I have a cheap BSA 4 x 16 power scope with the illuminated reticle, when you turn the magnification knob all the way from 4 power to 16 power the crosshairs go from + to make an x when the magnification hits the stop, and when you turn the magnification from 16 power to 4 power the magnification again comes to the stop the crosshair will move backwards and the crosshairs make another x. So when I want to straighten the crosshair from x to + I rotate the magnification ring either from 4 to 16 power or back to where the ring almost reaches the stop then I proceed gently turning the ring a little at a time enough to get the x to move till it looks like the + again .. I'm thinking the erector screws might be loose or something else causing the problem, do you have any thoughts other than throwing the scope in the garbage.
That should be repairable. Does the magnification change as it should?
@@kennethdellinger2037 Yes the magnification works, everything seems to work fine just when i come to the end of the magnification the knob feels like it snags a tiny bit then if it's continued the crosshair will cock sideways like an x just before it stops then I have to run the magnification back the other way till I feel it catch and then carefully I try to inch the magnification knob ever so lightly to nudge the crosshair back straight up and down where I leave it, I usually try not to turn the magnification knob all the way to the max powers. The scope is a cheap BSA not really worth much, I've even tried to get in contact with the company but I never get any replies. I've had worked on other scopes but this one has the illuminated battery on the eye piece and I'm Leary of getting in over my head. I also have a 24 power BSA scope that needs work but that's another story in itself.
@@69easyrider Possibly the locator pin or screw that keeps the erector from turning as you rotate the power ring is loose. I have disassembled BSA scopes before and most use the ball and socket method of mounting the erector. The reticles were installed by threading into the erector so I think that if the reticle was rotating it would likely remain in one position. You may remove the screw from the magnification ring and slide it back to see if there is a screw or pin to locate the erector and if so is it tight. You can also use a pen light to look through the ocular lens as you rotate the power ring and maybe see what is rotating. If you have the fast focus feature BSA normally uses a very small screw on the underside of the bell as a stop. If you remove the screw you can remove the lens only and take a look inside without disturbing anything else.
@@kennethdellinger2037 Thanks I'll have to check it out in the daylight I've got eyes over 70 they don't focus very good at the end of the day. Thanks again, John
Happy New Year, sorry it took me so long to get back with you, I finally got enough time to look at the scope the other day, I used my rework station to heat the screw in the magnification ring, I removed the screw and slid it back and didn't see any screw or pin other than the hole where the magnification screw is. There are three tiny jeweler screws holding the other part of the Magnification which I couldn't remove after using my rework station to heat those mini screws. I didn't want to damage the fragile screw heads so that's as far as I got.
Hello sir!
Have you disassembled a DDR Zeiss DF 4/N?
I have not.
Do you repair scopes for a price and if you do please let me know where I can send it. It’s on a old 22 rifle and has become cloudy is there anything that can be done for it
I do not. Make sure the exterior lenses are clean. Use alcohol or glass cleaner to be sure. If that's not the problem there may be moisture internally or less likely something on the internal lenses.
I'm struggling with the turrets on a new Chinese scope. They aren't adjusting and giving me the audible clicking. I have them off and disassembled as far as i can see, but it seems like i need to go further to loosen something up.
Not sure by your description what you may have. Not all turrets give audible clicks. I have an old Simmons built that way. The turret I describe in the video is the most common one though. Normally you can remove the clip and screw the adjuster out. Will they change point of impact on the target when you adjust them?
@@kennethdellinger2037 nope, no adjustment. I was hoping they had a clip like yours, I think they may be press fit together
Maybe. Sorry, I'm not familiar with what you have.
@@kennethdellinger2037 Had nothing to lose and cranked on it with a pair of pliers. Lo and behold, it came loose and started to click! Someone at the factory must still be giggling, they really had it torqued together.
Can eye relief be adjusted my moving the objective lens?
No. Scope eye relief, that is the distance your eye is from the ocular lens when you have a full field of view, is fixed. You can move the scope forward or back in the mounting rings for a more comfortable shooting position but the the actual eye relief can't be changed.
@@kennethdellinger2037 Good to know. I was looking for ways to make this scope work other than changing my stock length. Mounts won't allow it to come back far enough.
I'll just upgrade and maybe practice tearing this pos apart...lol
I can't figure out how to remove the reticule. It looked like you just unscrewed it but when I try it I just keep going around in circles
All the reticles I have personally removed have been either threaded or mounted with small screws as the one I repaired in the video was. If you are trying to remove it with the erector in the scope you may have to completely disassemble it to understand why it's not backing out. Wish I had a better answer for you but without having eyes on it I just don't know.
@@kennethdellinger2037 what is an erector in this context? I don’t mind breaking it beyond repair as I only care about the lenses inside. There were three screws in the general area that I have removed. I think it’s attached to a cylinder inside the scope itself (I don’t know my terminologies sadly) since I can spin the reticule and a piece inside (both just spin endlessly)
@@finaladvance5085 The erector is the cylinder inside the scope. It will be held in by a nut installed from the rear (as the one in the video is) or it will have screws under the magnification ring. Once you remove those you can push it out to the rear.
Vocês se esquecem que estamos no Brasil.
Sir l have a simple discovery scope and once while l was under the rain a drops of water gets inside, so l open only the objective lens and wipe out those few drops but after l put them back all the power changed which means like 20yrds power shrink down to 10yrds going further if l turn it 50yrds and beyond l can't see a thing, it's completely blur, l don't how to fix this,, please help
If I understand you correctly the scope has an adjustable objective lense. Does it have markings for yardage on the front?
@@kennethdellinger2037 yes of course it does have a marking like 10, 15, 20yrds and so on, and that's the way how l check its ranges, so how do l fix those blurry?
@@felixv2432 Sounds like your parallax adjustment is incorrect. I describe the adjustment procedure in part 3 of the video. If you didn't install the objective lense with the same number of rotations the scope won't be in focus. Get on a steady rest and rotate the lense until the scope is in focus at a longer distance like 100 yards. Don't be concerned about the yardage references when you do this. You should be able to get the scope in focus that way. You could be a full rotation or more off. I always count my rotations when I remove the lense to simplify the process. Hope this helps.
@@kennethdellinger2037 As of now l fit it on my rifle and l can use it till 50yrds ranges by turning the objective lens but to use 50yrds and beyond l have to zoom out to the last number, l don't know it's a parallax problem. Like how l mention before while cleaning l did not remove or touch any of the other section except the objective lens.
Assuming you removed the objective bell as an assembly I don't have an answer for you. Did remove the lens from the bell?
Weaver K3...I cannot for the life of me unscrew the ocular. It unscrews about 3/8" and then locks up TIGHT.
Are you removing the entire bell or the outer lens?
@@kennethdellinger2037 I want to get the entire ocular bell off as there are fine brass shavings on the inside of the interior ocular lens. Figure once I get that off I can gently blow off the shavings and then determine where they came from ( I assume from some interior threads). Everything else on the scope is really nice. It is the K3-1 model. And THANK YOU for the quick response.
@@dannyh8288 There will probably be an internal nut that acts as a stop for the bell. I looked at a photo of a K3 and it appears you can remove the lens from the bell and then access the internal nut. There appear to be slots for removal in the nut that holds the lens. You can make a tool from thin metal to use. If you look through the lens with a light you will be able to see if that's the case. You'll need a light that's not too bright to prevent glare.
@@kennethdellinger2037 Yes thats exactly it, but I cannot remove the lenses. I tried a heat gun today with a firm grip on the incredibly thin lens retainer...it didnt budge. I will make a spanning wrench tomorrow or Monday and try reheating the retainer, then twisting it off. I hope I do not break the lenses or ruin the cemented aspect of the lenses. They used to use balsam cement which heat would ruin.
@@dannyh8288 It's always risky! Sounds like you're on the right track though. I've never disassembled any of the vintage stuff but the lenses on the scopes I've repaired are held by the retainers only no glue at all. Be careful and good luck!