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Crosman Challenger CH2021 Windage Problem
Posted: Sun Nov 10, 2024 12:26 pm
by Barry
I have one of these that doesn't have enough windage in the rear sight to center up on target. We've traced the error to the barrel not being timed correctly, so that the flat on the barrel doesn't allow the barrel weight to sit in alignment with the rear sight. It's out past the 1 ring @3:00 with the wind full left. There's not enough bite on the sight dovetails to allow enough shim to move impact to a great enough degree, even shimming the front & rear.
Any ideas how to fix this?
We don't have an extra, so I don't want to send it back to the factory.
Re: Crosman Challenger CH2021 Windage Problem
Posted: Mon Nov 11, 2024 11:30 am
by jhmIII
Can you rotate that bbl weight/sight mount to the right (clockwise)?
This is a fairly common goof from Crosman. (Poor quality control) (Even on the 2009's)
If the flat is too close to the correct position to tighten the grubscrew down, I'd find the correct rotation then just put a touch of 5min eposy to keep it from turning.... you con get it off by slightly heating it to break it down.
Else bite the bullet & send it back
Re: Crosman Challenger CH2021 Windage Problem
Posted: Mon Nov 11, 2024 6:13 pm
by 3DPrintedHandBlocks
This is a known problem on the CH2021. Give them a call and see if anyone picks up. If they do, they will probably send you a mailing label for a repair.
They just sold to Daisy and I do not know where their facility is currently at, but I think they are still offering service in some form right now.
Re: Crosman Challenger CH2021 Windage Problem
Posted: Sun Nov 17, 2024 7:52 pm
by bpurvis
at about 2 1/2 minutes in on this video listed below the guy shows how to adjust the front sight holder to account for the windage issue. This is what i've done to our guns that ran out of windage and it's taken care of the issue.
https://youtu.be/d2PYgW4rS3Q?si=c1vTXwbu8zDg85Cj
Re: Crosman Challenger CH2021 Windage Problem
Posted: Mon Nov 18, 2024 11:10 am
by Barry
bpurvis wrote: ↑Sun Nov 17, 2024 7:52 pm
at about 2 1/2 minutes in on this video listed below the guy shows how to adjust the front sight holder to account for the windage issue. This is what i've done to our guns that ran out of windage and it's taken care of the issue.
https://youtu.be/d2PYgW4rS3Q?si=c1vTXwbu8zDg85Cj
Thank you, i'll give that a try. In the meantime, I used masking tape to build up the left side of the front sight base and the right side of the rear sight. It's pretty close now, but still needs dead left on the rear sight.