Got any drawings

[Double D]

George,

I went through Gibbons again.  No reference to camber on the axle. 

What I did notice was Gibbons only refers to two patterens of Carriage for the Mountain howitzer.

The Pack and the Prairie. AOP  refers to two models of the Prairie. Gibbons only mentions one. He does make reference to the carria ge being a special design as it was prone to over turning.  The plans you have, which model and what year?  Gibbons is 1863.  This could explain the mystery.

[GGaskill]

The only date I can find in AOP No. 25 is 1849-1890 on the cover.  I think the first version of the prairie carriage had a narrow wheel base that had a tendency to overturn on rough roads.

[The Shootist]

George, (I got the MH carrage drawings....Thanks)

My reference to gather in the gun carriage was intended to mean the camber would become gather when the trail is lifted. We all tend to see the carriage as it sits to fire, not in the travel position.

Grant

(I'll be scaling the MH carriage to 1/2 for my project.)

[Double D]

Could maybe the angled in wheels be a way that they were try to controll the recoil of the gun.  Gibbons does mention that there was a real issue with that?

The problem with Gibbons is that he only goes to 1863.  The Mountain Howitzeter real use came after that.

[Cat Whisperer]

I think the dishing of the wheels is for strength.

When the cannon is moving it will sway to one side or the other, especially in turns.

The wheel on the inside of the turn is going to catch most of the side-ways forces.

If the wheel is dished, the hub tries to move out, pushing more on the spokes - tightening the whole wheel assembly.

With a straight (non-dished) wheel the sideways force will only cause the hub to pull away and loosen the assembly.

JMHBAO

[GGaskill]

I agree 100%.  Now if the wheel is mounted with its plane vertical, gravitational forces will be pulling the spokes outward, again loosening the wheel; while if the spokes are vertical, there is no lever arm for that kind of action.

[gary michie]

 ;DHI:
  First of all THANK YOU FOR THE DRAWINGS I think they will be a great help that is if I can figure
   out if a M.H. carriage will be correct for a 1862 gatling.
   Now for the angle of the wheeles and the dish of the wheels.

   I hope I can remember this right.

1  you determine the size of axle you need to carry the load .
2  you tapper the ends so that neither the nut or colllar receives a preasure from the wheels
    knowing the hub length .
3  The hub length is deterrmined by drawing a perpendicular line from the inside of the tire up
    through  the axle then tipping the axle to the extreme  angle of the terrain you plan traversing
    that's one end of the hub then do the same on the outside that's the other end. All of this you
    do with a Dished wheel.
4  First the center line of the hub and the outside serface of the felloes(rim) and tire are parallel
    then the rule of thumb I use is 3/4 to 1 tire width of dish the dish works on the arch princible of
    carring a load. Now you set the axle angle so that the spoke that is pointing at the ground is
    straight up and down.
5 Now when you go around a corner the out side wheel trys to get bigger and the steel tire holds
   it to size this tension makes the wheel stronger.

[GGaskill]

If you're already ready to build wheels, I better get the wheel drawings finished.  The full dimensions of the hub and other wheel parts will be in the drawing.

[GGaskill]

Wheels were perhaps the greatest problem. As early as the 1500's carpenters and wheelwrights were debating whether dished wheels were best. "They say," reported Collado, "that the [dished] wheel will never twist when the artillery is on the march. Others say that a wheel with spokes angled beyond the cask cannot carry the weight of the piece without twisting the spoke, so the wheel does not last long. I am of the same opinion, for it is certain that a perpendicular wheel will suffer more weight than the other. The defect of twisting under the pieces when on the march will be remedied by making the cart a little wider than usual." However, advocates of the dished wheel finally won.

The above is from Artillery Through the Ages, The Characteristics of Cannon, by Albert Manucy.   The dished wheel was mounted, however, such that the load bearing spokes were vertical.  Both camps were right about the points they considered.

[gary michie]

  HI:
SO after a week or so of no input on my initial questions of who made,and what kind of carriage is the carriage the 1862 gatling gun is on, at the Springfeild Armory Museum ; you can see a drawing of it on my web. site,I'm guess there's no help comeing?I do wish to thank you all for at least looking and the friendly conflab we have had.

[GGaskill]

So far as I can tell, the carriage shown on your website is unique to the Gatling gun.  The front of the trail in no way resembles that of a mountain howitzer pack carriage.  And its airyness seems inappropriate for a cannon.

[GGaskill]

Another drawing is on its way.

[Frank46]

Gary, what is the name of the music and where can I get a copy of it thats on your web page. Thanks, Frank

[GGaskill]

You might risk $15 and get the No. 38 folio from AOP.  It's for a .50 cal Gatling carriage.

[gary michie]

  Hey You Guys:
I was looking at my stuff and in the book written by Paul Wahl & Don Toppel  they talk about the 1865 ,and there is a letter written by a Lt. describing its test and the gun. In the discription the carriage is said to be a type of 6 pound field carriage only liighter. Soooo, I looked at my patents a there it is , with no dish in the wheels and I assume small. On one of the next pages is a picture of 1" gatling on a carriages just like the .58 carriage only larger. I'm excited.

[Double D]

Gary,

I split the build post of into a new topic called Building a Gatling gun