All
Finished the drive of a Front PTO and since members have been helpful I thought I should post some photos and results.
The pump was attached to a 3 phase motor and was recovered from a scrapyard.
Splines from a Renault Megane were used instead of the OEM drive. I did not even contact Kobuta agents. The original drives are probably not available and if so would cost a fortune.
The driver plate which I used is 1.2 mm Stainless Steel. If anyone has the original Kobuta drive plates I am interested in the material type and plate thickness?? Please advise.
Lack of a clutch or quick method of disengaging this drive is a disadvantage as advised by other members. The pump manufacturer give a max of 3 mins for running the pump without a water supply and also a rated speed of 1400 RPM.
I have run the pump at all speeds up to 2500 RPM. The pressure form the hose nozzle is great and blows leaves and debris well clear of my yard.
The gauge shown in photo is temporary and I intend to remove it after the next cleaning session which will be before Christmas.
Inconclusion the front drive (Renault) and my SS plate have been a success. My attachment and coupling to the pump is not successful and I am going to put in a proper universal joint.
If anyone wants details of the pump or other info I can provide.
Cheers.
What is a Renault Megane? What is the spline count and size?
What is the problem that you need a Ujoint? Vibration?
Look to a 'rag coupler' to solve that problem......you do not have the length of shaft for a ujoint.......further you will need two ujoints........one will not work.
Rags or Lovejoys are the answer.
Look to a long splined section with a sliding splined collar for a disconnect, all you need is about 1" to 1.5" of movement. Drill two pin holes, one to lock the collar in the drive position and one when the collar is slid back to lock it out of drive........something like that.......anyway.....