Ignorant question about blue presses

[freonr22]

Is the leverage different on a 650/550 vs a lnl ap to require a "strong mount"? I have only ever used a Hornady lnlap press, and it it mounted to a 1" cut from an office desk top, and i dont see flex whatsover.

are some people trying to mount a press to a 1/2" pc of plywood and need a "strong mount?" or is the fulcrum different? its not a red vs blue thread, just an informative one for me... thank you for your input...

[HighLander51]

Resistance to the load applied by the moment arm can be made greater by increasing the section thickness of the mount surface or by increasing the length of the mount. For example, a 2" base on a 3" thick mount (assumes a solid ground) versus a 1/8" designed mount with a 10" long base on a .5" plywood. At the end of the day, both provide the same resistance. If your press is flexing, no matter what the mount, it needs to be stiffer.

[anyracoon]

My reloading benches are very solid with no flex at all. I added the strong mounts for my Dillons because I stand when I reload and the extra press/handle height works/feels better for me.

[BigBronco]

The strong mount as I understand is only to change the height for standing.

[rsrocket1]

Doesn't the strong mount move the center of resistance from the edge of the table (if it were mounted on the surface) closer toward the inside of the table? That would be an advantage for a table that is not massively heavy or secured to a floor or wall.

In my garage, I mounted my presses to a 2x6 and ran it the width of the table and anchored it to the studs of the wall with angle brackets. Very sturdy and no flex while resizing rifle cases.

[joelogic]

It's really just a height thing and you can mount it further back. Without it you can only mount the press to an edge of a table. I have my work bench higher so I can stand without the strong mount.

[GeoffLinder]

Yep, strong mount is all about height. The higher handle moment arm with a strong mount also makes any give in the mounting base (bench) more apparent (think length of lever here).

I use the strong mount strictly because I stand when I reload and I don't want a 38 inch high bench top

[LGB Loader]

I have a 550b with out the strong mount and I have both 650's on strong mounts. I used stong mounts for the handle to be higher when I stand or sit on one of my stools. I guess it would create less flex on a thinner bench because the footprint is much larger with a strong mount than just a press. but this sentence below has all the ingredients of a red versus blue troll type overtone even if it isn't meant to be. This is why I am addressing this so that it is out in the open and crushed.

Is the leverage different on a 650/550 vs a lnl ap to require a "strong mount"

However, I have seen many posts from Freonr22 over some time and I am 100% certain that this is not the OP's style and he is a genuine Cal-gunner. Freonr22, you are a cool cat.

To further express my opinion, I have seen the Dillon strong mount used with even single stage presses. I think at remember seeing a Redding T7 mounted on a Dillon strong mount at Field Time Sports & guns in Westminister CA so the leverage has nothing to do with it.

Freonr22, I have owned both the Hornady LNL AP and 650 and both are great presses with amazing strong points and the thought of a Hornady LNL AP on a Dillon Strong Mount could be very cool.

Peace Brother...

LGB

[rsrocket1]

I thought this had to do with leverage and brand of press has nothing to do with it.

Mounting a press to the edge of a table is the worst possible place in terms of potential flex and unbalanced load on the legs of a table. That being said, a table with enough stiffness and enough weight to offset 25-50 foot pounds of torque at the top edge of the table is adequate for a press to be mounted on the edge.

Why do I say that? A resizing stroke can take 25-50 pounds of force and the handle is 17" long. The greatest effort is at the top of the ram stroke when the lever is beyond 90 degrees so I guess maybe only 12" of force at right angles to the top edge. If your bench cannot take that torque, you will either get flex, lift the legs of the opposite side, or you must hold onto the press with your other hand to steady it.

How do you counteract this?
1. A heavier table
2. Outriggers on the press side of the table
3. Anchoring the table to the floor or wall on the opposite side of the table to the press
4. Move the press toward the center of the bench.

The strong mount does #4. Any press mounted on a strong mount can gain this advantage. As most reloaders know, #1 and #3 are also very do-able solutions.

So to the OP, yes the fulcrum is different and you do get the added benefit of being able to use a less sturdy setup than if you mounted it on the edge, but most people probably mount their presses on a strong mount because of the height convenience.

[mycrstuff]

I bought a 650 last summer. I put it on my Sears work bench where I had a Lee press previously. This was because two of the holes lined up and I would only have to drill two more holes into my bench. I get it all set up and find out I can't pull the handle lever as it is hitting the side of the bench. My bench is straight sided and the Dillion needs an overhang for the handle to swing under the top of the bench. The strong mount gives you the room for the parts to move underneath.

[anyracoon]

My reloading benches are all anchored to the wall and reinforced under the areas where my presses are bolted, plus I have strong mounts on all of my Dillons. No flex what-so-ever!

[bruceflinch]

For Me,Strong mounts offer more leverage by elevating. YMMV. I prefer to sit at my machines. ( I stood for 7 years)

[freonr22]

Thank you LGBloader, it definitenely was not meant as a troll sentence, I just was unaware of the function of the strong mount.

I cannot see mounting any press on a thinner type of top, I have only had one press, mounted two different places, and they were both a substantive top.

Reagrdless of brand/color, I would think even a rockchucker should be mounted properly, 1-3" of top.

So the "strong mount" is an elevated base... cool! my counter is currently 2 2x6 thick and a 1" desktop on top... press is mounted with alltread rods through all three. about 36-38" high.

Hi barstool fits, not a std chair height