Author Topic: Arbor clearance  (Read 120 times)

Offline Navy Six

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Arbor clearance
« on: July 08, 2020, 06:07:17 PM »
In the last few years I have installed Kirst cylinders in a couple of Uberti 60 Armies and one Pietta 44 Navy. The Pietta installation went a little easier as there is a clearance cut in the arbor right where the hand comes out of the frame to engage the cylinder ratchet. The two Ubertis didn't have that clearance cut and I found that when cocking the gun, the hand would contact the arbor and be pushed slightly away from engaging the cylinder. I feel this was one of the issues I encountered in trying to get the Ubertis timed correctly. Has anyone else run into this or am I mistaken? All three guns were of recent--within last five years--manufacture.

Offline Captainkirk

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Re: Arbor clearance
« Reply #1 on: July 08, 2020, 08:12:38 PM »
Check with Mike Brackett (45 Dragoon on here) who has probably set up more conversions than all of us here combined
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Offline ShotgunDave

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Re: Arbor clearance
« Reply #2 on: July 08, 2020, 09:30:29 PM »
I've heard this problem talked about before. I believe you just need to relieve the arbor a bit and all is well.
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Offline Navy Six

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Re: Arbor clearance
« Reply #3 on: July 09, 2020, 05:14:32 PM »
Shotgun Dave, I have attempted to relieve the arbor as you suggested. However that area is difficult to reach as the recoil shield partially covers it. I have worked with small files and barely scratched the arbor. As I don't want to remove the arbor to clearance that spot, my latest idea would be to use a flex shaft on a Dremel tool and see if I can grind that area using one of their small sanding drums. Off to Home Depot for more tools! :) For now, the guns are working correctly and I may use them this weekend at our Cowboy shoot.

Offline ShotgunDave

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Re: Arbor clearance
« Reply #4 on: July 10, 2020, 11:18:43 AM »
I sympathize with you Navy Six. Taking the arbor out is a pain, but not that hard. I wouldn't want to do it if I didn't have to either.

Maybe a small diameter grinding stone? I have some for my Dremel that are not much bigger around than the shaft they're mounted on. Maybe something like that would work.
"Never trust quotes from the internet"
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