Pedersoli Trade Gun Lott Lock Question

I have a new Lott lock replacement for an old Pedersoli trade gun. The forward end of the lock where you would think the lock bolt threads in is actually not threaded at all and appears to be countersunk for a coned screw head coming in from the front side of the lockplate. I have never seen such a design except maybe in some double barrel hookups. Anyone know how this is supposed to work? I need a lock bolt coming in from the backside thru the serpent into the front end of the lock. Any solution ideas other than returning the lock?

The screw hole you mention is for just that on the Pedersoli Trade gun, a small wood screw at the front right side of the lock. The Pedersoli Trade gun has only one screw/bolt holding the lock in, and it is the rear left screw/bolt. The front left screw is just a wood screw, about 1/2 to 3/4 in long.

I don't think you can put another long lock retaining screw/bolt thru the stock from the left front, as it would hit the BBL, or ram rod. At least I can't on my Pedersoli Trade gun. The only way to find out would be to drill the hole all the way thru, with the BBL, and ram rod removed, then reinstall BBL, and rod, and try a long screw/bolt. I tried measuring it once, and found it was really close. I don't think the front holes line up either. My gun is a 2021 manufacture, from a kit, I built.

How old is your Trade gun,?? What happened to the original lock,??.
My lock is held nice and secure with just the one long lock screw/bolt.
I'll admit it is a weird setup.

Dave

RedJohn said:

I have a new Lott lock replacement for an old Pedersoli trade gun. The forward end of the lock where you would think the lock bolt threads in is actually not threaded at all and appears to be countersunk for a coned screw head coming in from the front side of the lockplate. I have never seen such a design except maybe in some double barrel hookups. Anyone know how this is supposed to work? I need a lock bolt coming in from the backside thru the serpent into the front end of the lock. Any solution ideas other than returning the lock?
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Thanks. I bought the gun sight unseen and can just tell it's been around for awhile. Whoever built it attempted to use a long bolt in the front but misdrilled the hole off on some angle but never pierced the lockplate. They used a small woodscrew to secure the front of the dragon instead. They did, however,
drill thru the rear dragon bolt ring and drill and tap the very tip of the lockplate rear to secure that connection. The frizzen needs replacing, a second face was welded on but not professionally. The price of a new lockplate and the price of a new frizzen were quite high so I opted to go with a new lock, and it actually fit the mortice perfectly. I have never seen a Pedersoli trade gun before so didn't know how all the attachment points worked. We will figure it out, just looking for workaround ideas.

I know I'm late to this but where did you get your replacement lock? The Davis lock has been out of production for a while.
I have a pretty nice trade gun that won't shoot reliably because of the terrible lock. The mainspring doesn't seem to have the snort to get the lock speed up. Sparks unreliably no matter what I do.

Sounds like you just need new springs, mainspring and frizzen springs. Check Tracking of the Wolf

The problem is knowing what spring to buy. It's a big lock...
Track doesn't have any specific mention of the spring on their site. When the Davis lock was available they mentioned it as a replacement for the Lott but now that its discontinued it doesn't show up on their site unless you find a reference in the old catalog.

I found a Pedersoli Lott replacement lock after a long internet search from a dealer in FL, I can't remember the exact source. It was about a lot cheaper than getting one from Pedersoli directly, then I sent it to Cabin Creek for their tune up. It fit the mortice exactly, and the touch hole location was perfect. It works as it should, hope this helps.

curtludwig said:

The problem is knowing what spring to buy. It's a big lock...
Track doesn't have any specific mention of the spring on their site. When the Davis lock was available they mentioned it as a replacement for the Lott but now that its discontinued it doesn't show up on their site unless you find a reference in the old catalog.

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Call Track of the Wolf, they have some excellent customer service people.

RedJohn said:

I have a new Lott lock replacement for an old Pedersoli trade gun. The forward end of the lock where you would think the lock bolt threads in is actually not threaded at all and appears to be countersunk for a coned screw head coming in from the front side of the lockplate. I have never seen such a design except maybe in some double barrel hookups. Anyone know how this is supposed to work? I need a lock bolt coming in from the backside thru the serpent into the front end of the lock. Any solution ideas other than returning the lock?
View attachment 334354

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Pedersoli designed their trade gun with one lock bolt and a wood screw in the front. I’m not sure about the newer pattern, per the parts list they still just use one lock bolt.

So you don’t need a new lock, furthermore Pedersoli locks are not exactly ‘drop in’ replacements, they often require fitting.

A forward lock bolt will not work because it will be obstructed by the Ramrod and barrel.

You can always put a threaded insert in the screw hole and use a countersunk machine screw if you don’t want to use a wood screw.

RedJohn said:

I found a Pedersoli Lott replacement lock after a long internet search from a dealer in FL, I can't remember the exact source. It was about a lot cheaper than getting one from Pedersoli directly, then I sent it to Cabin Creek for their tune up. It fit the mortice exactly, and the touch hole location was perfect. It works as it should, hope this helps.

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The first generations of Lott Locks from Navy Arms and Dixie Gun Works in the 1970’s used hand made springs, the current Pedersoli spring will not fit, its not even closely the same dimensions. I’m not sure what track of the wolf is selling but i have had some people complain about their replacement Pedersoli mainspring as being too weak.

If you need a new mainspring i would suggest having someone hand make one or have the plate welded up with a new spring fit to the plate. Special attention will need to be made with the stock to ensure the spring isn’t too large for the mortise.

I sent my Lott to cabin creek. It is a big improvement.