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Old 01-10-2019, 04:09 PM   #1 (permalink)
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HELP! Converting an old 98 to use newer sears

Greetings everyone!

I come to you all today with a problem that not only effects me, but also a field owner friend of mine.

I have been planning a build that needed a 98 shell, and my friend gave me a shell for free, as he has probably over 20 of them. The reason why is because they all use the older style sears, the ones with the contraction spring. We have loads of the modern compression spring sears, but we don't have any of the older ones.

So my question to you all is this: Is there any way to convert older shells to use newer sears, and if so how? If we can get these markers going again it would help out the field immensely. And no, we are not planning on ordering from tippmannparts, as our post office is a year behind in parcels and we have loads of new sears

Thanks!
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Old 01-10-2019, 04:26 PM   #2 (permalink)
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why not just have someone make the sears? It may be cheaper in the long run.
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Old 01-10-2019, 04:32 PM   #3 (permalink)
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I guess you could modify the older 98s by installing an "L" bracket for the sear springs to push up against approximately in the location of the newer shells. I would use an L bracket with 2 screws to prevent it from rotating around a pivot point.

You would have to modify the L bracket to cup the spring a little or install a guide pin so the spring doesn't go flying while in use.
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Old 01-10-2019, 08:14 PM   #4 (permalink)
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Trying to think of the simplest way here, maybe some kind of cap to hold the end of the spring jb welded onto the wall

The pins that interact with the sear are all in the same place between old and new?
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Old 01-11-2019, 07:17 PM   #5 (permalink)
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^I agree with them. Some bracket to cup the spring and mount via the existing trigger sear pins. 3D printing would probably work in this situation when the geometry is correct. Can even add a guide pin at the cup base for spring retention.

Last edited by Walking Stick; 01-11-2019 at 07:21 PM.
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Old 01-11-2019, 09:20 PM   #6 (permalink)
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I would try to buy an older sear and spring if you can. They aren't that hard to find and aren't that expensive, and they work better and last much longer than the newer ones.
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Old 01-11-2019, 10:06 PM   #7 (permalink)
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He does have the disadvantage of having stuff shipped out to them in South Africa, shipping stuff to them may be out of the question.
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Old 01-11-2019, 11:17 PM   #8 (permalink)
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I overlooked that. For a single one, then I would probably try to make something work. He does mention his field owner friend is affected as well with 20 bodies, as long as you're dealing with shipping I would see about getting all 20 done and having him help with the cost, but for a single unit modifying might be the better option.
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Old 01-12-2019, 01:35 PM   #9 (permalink)
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Tippmannparts.com has the old style sears in stock, why not just buy one instead of trying to mod the new style to work? The one ones are better anyway.
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Old 01-12-2019, 02:37 PM   #10 (permalink)
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Quote:
Originally Posted by magmoormaster View Post
Tippmannparts.com has the old style sears in stock, why not just buy one instead of trying to mod the new style to work? The one ones are better anyway.
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Originally Posted by Numbskull View Post
And no, we are not planning on ordering from tippmannparts, as our post office is a year behind in parcels and we have loads of new sears
Should sum it up.
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