Windage top design

Vern

Vern

Morethan1waytoskinacat
Maybe I have not looked hard enough. But I cant seem to find a windage top that does not use springs on one side.
I would like to find one that works completely off of the windage screw without having springs on only one side.
Any advice?
Or is the design concept flawed in my thinking?
 
Some time ago Dave Tooley made me a rail gun, where the base had windage thread he somehow "formed." No springs needed. I don't remember how he did it, maybe under-threading the hole in the aluminum, then using the steel to finalize the thread. It did (& still does) work. Whatever he did would also work for a windage top.
 
I would not

Vern said:
Maybe I have not looked hard enough. But I cant seem to find a windage top that does not use springs on one side.
I would like to find one that works completely off of the windage screw without having springs on only one side.
Any advice?
Or is the design concept flawed in my thinking?
Click to expand...

say your thinking is flawed. That said, what do you have against springs? Screws, or wrapped incline planes, male and female, matched by the best of designs, all have to have some lash tolerance in them. Otherwise, they would be a "0" fit and would be unmovable. Add a spring into the system and the inherent lash would be gone. The drive side of the screw would always be the same, no matter which direction you are turning. The secret to the whole thing would be to have VERY close tolerance screws and nuts and to use a long throw, minimal pressure spring to take up any lash in the system.

IMHO
 
Vern said:
Maybe I have not looked hard enough. But I cant seem to find a windage top that does not use springs on one side.
I would like to find one that works completely off of the windage screw without having springs on only one side.
Any advice?
Or is the design concept flawed in my thinking?
Click to expand...
=================================
I have one top with a single return spring that is not strong enough,
when fully extended, to hold the top against the adjustment screw.
However, I have one with two return springs that works well if I
keep every thing clean and lightly lubed. I think a worm drive shaft
would probably work well but I haven't seen any. Keep looking
there are a lot of Mad Scientists out there and they are always
coming up with new front rests. :D
 
I made one for myself and it uses a spring return, but instead of a friction slide like most use, I used a linear bearing for the movement. It will return very easily with a heavy load and little spring pressure. If you are building your own I would recommend it.

I also agree that with out a spring backlash is an issue.

Gary
 
The scopes we use all have return springs against the turrets. This
is very similiar to how windage tops work, but without clicks.
Most of the windage tops use a rather course thread, and this
IMO is not good. You can feel the springs loading and unloading.
A finer thread, near 36TPI gives great sensitivity without the
spring feel. I use 40TPI on my windage top and 4 springs, you would hardly
know it.
 
Now that is

Bob Kingsbury said:
The scopes we use all have return springs against the turrets. This
is very similiar to how windage tops work, but without clicks.
Most of the windage tops use a rather course thread, and this
IMO is not good. You can feel the springs loading and unloading.
A finer thread, near 36TPI gives great sensitivity without the
spring feel. I use 40TPI on my windage top and 4 springs, you would hardly
know it.
Click to expand...

a design that would make many "think" there is no springs. And the linear bearings previously mentioned add to that "sweetness". As I stated "not flawed", just not fully thought through.
 
Worm Gears?

We use worm gears and the like in lathes that mill down to .0001 or less.
No springs there.
The problem is I dont like the tension turning one direction and none in the other.
Some rests may also not return fully.
I was shooting on one yesterday that had creep (Though I do sincerely appreciate the loan of that rest). That is it would move ever so much after you quit turning the knob and slowly at that.
Easy way for me to use it was to turn and then turn back for the tension but thats not the point.

Scopes? Yes scope are the same and have the same problems. Thats why many have scope "fixes" with the nylon or delrin screws.
And why Jackie and others have gone to frozen scopes.

Hmm maybe thats why they created the joy stick, but i would rather twiddle :D at least for now.
 
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