I was curious where you had posted your questions - - they popped up briefly on FB (It does that sometimes when someone you know makes a post on a group you aren't a member of yet) but I couldn't find them on any forums or FB Case/Ingersoll groups...
Thanks for the update, and looking forward to reading more about your trencher progress...
'68 Case 195, '84 Case 446, '88 Ingersoll 222 - and 1965 Case 530ck (fullsize backhoe)
RoamingGnome wrote: ↑Fri Apr 28, 2023 8:11 am
I was curious where you had posted your questions - - they popped up briefly on FB (It does that sometimes when someone you know makes a post on a group you aren't a member of yet) but I couldn't find them on any forums or FB Case/Ingersoll groups...
Thanks for the update, and looking forward to reading more about your trencher progress...
Thanks Gerry! The group came up on a google search I did for manuals, it's called "Davis (Case) Taskforce 200/300 trencher" and it seems to be the only group for such devices, so people post pictures of all Case/Davis trenchers. It's not a big group, as you can imagine.
Eugen wrote: ↑Fri Apr 28, 2023 11:07 am
The rods are done. Very nice machining, I'd never have been able to get such good finish on them.
039AA02E-C69F-4885-ABA9-45D62BE61245.jpeg
Seeking advice. How would you prepare and weld the eye on the end of the rod? Also, what process, stick or mig? If stick, dc and 7018?
Stick , and protect the chrome with header rap and a pipe over it . I have some rap you can borrow . Grind the end to mirror the tube end to be welded on . Leave a small gap ,about a 1/16th on an inch. Tack in place at each end , you can use your mig for this . First pass at he bottom (root), clean slag and then flip over and then do first pass (root) on other side . The idea is to have the second root pass bite into the bottom of the first . Then start filling in the gap between rod and rod end . Do a pass on each side , clean slag and repeat until the weld is slightly larger than the rod .
As for what rod to use , I would use 7018 because that is what I know . Harry would be able to give better insights on this .
Eugen wrote: ↑Fri Apr 28, 2023 11:07 am
The rods are done. Very nice machining, I'd never have been able to get such good finish on them.
039AA02E-C69F-4885-ABA9-45D62BE61245.jpeg
Seeking advice. How would you prepare and weld the eye on the end of the rod? Also, what process, stick or mig? If stick, dc and 7018?
Stick , and protect the chrome with header rap and a pipe over it . I have some rap you can borrow . Grind the end to mirror the tube end to be welded on . Leave a small gap ,about a 1/16th on an inch. Tack in place at each end , you can use your mig for this . First pass at he bottom (root), clean slag and then flip over and then do first pass (root) on other side . The idea is to have the second root pass bite into the bottom of the first . Then start filling in the gap between rod and rod end . Do a pass on each side , clean slag and repeat until the weld is slightly larger than the rod .
As for what rod to use , I would use 7018 because that is what I know . Harry would be able to give better insights on this .
Eugen wrote: ↑Fri Apr 28, 2023 5:34 pm
Not sure Dave, the original engine was an Onan J60, also called the Onan JB. Probably somewhere between 20 and 30 I'm thinking.
look on page 4-5 https://issuu.com/kmd9isb5nvmk/docs/cum ... ervice_rep
21.6 hp @ 2700 rpm
That 15 @ 3600 rpm is not to far off . If the pump you have on there is a little smaller cid than the original . You can use the extra rpm of that engine to compensate . Just might be a little slower over all , but should work just fine .
- they popped up briefly on FB (It does that sometimes when someone you know makes a post on a group you aren't a member of yet) but I couldn't find them on any forums or FB Case/Ingersoll groups... 
. If that is with 15 hp imagine what would it do with full hp . How much is full hp ?
Harry