Need advice on dimensions of 3 pt. receiver hitch

[pharmvet]

Im nearly finished with a 3 pt. receiver hitch. It will have a ball on top to be used for gooseneck trailers. The advice Im seeking is "what distance above the lift arms should the top link be located on my implement. Im supposing it would be best if the implement stayed somewhat level through its up and down cycle. Apparently to do this, one has to follow the trapezoid rule and design the attachment points on the implement to form a trapezoid with the attachment points of the lift arms and top link (where they actually attach to the tractor). Is my thinking correct. If so, My implement will not follow recommended ASAE measurements with reference to vertical distance between attachment points (lift arms and top link) Is this ok? Also, many locals have advised me to "not make the top (where the gooseneck ball is located) too tall" Apparently, many have had to lower the ball as an afterthought after realizing the arms could not be lowered enough to place the ball under a trailer that had just been removed from the bed of a truck.

Any and all advice on this matter welcomed as I would like to finish this project today. thanks,

 

[kennyd]

Here are the ASAE standards: Will an ASAE Standard Quick Hitch Fit? - Equipment | Lawn & Garden | LSU AgCenter That states 15" as the standard. A lot of stuff uses 18"...

My opinion: build to to the ASAE standard in case you ever get a QH.

 

[bcp]

You don't have to settle for only one location. Make several.

Bruce

 

[pharmvet]

I agree that most times sticking with "standard" is best. Also, never thought of making attachment adjustable (good idea) This will be used almost exclusively with cat II and was set up that way regarding pin sizes. It looks like what may actually work best is to use the CAT II horizontal measurements and pin size and use the CAT I vertical distance.

 

[JB4310]

Looks like a very solid design :thumbsup: I see you have a D-ring is that for safety chain? you will also want some attachment point on the back side to put a chain down to your draw bar to limit the 3 pts free travel. Maybe a clevis in the back holes of the tube, if there is enough room with the insert in the front???

I bought one, but should of just made it myself, since mine did not have safety chain loops or the limiter attachment, had to mod it myself.

I like how you pass the insert thru the vertical member, bringing the tongue weight a little closer to the tractor. maybe not a big deal but could come into play with a very heavy trailer.

I hope you made it quick hitch compatible.

JB