I had to replace my strut a couple of years ago. It was bent when by the lifting strap when the boat yard put the boat back in the water. I wasn't there to supervise; they were ahead of schedule and splashed the boat a couple of hours early.
There is no source for the original equipment strut; the manufacturer when out of business long ago. I talked to a bunch of helpful people at
J/Boats, TPI, and even the last owner of the company that built the original struts.
I had a strut fabricated through the Prop Doctor in Key West. Dan Ross (Proptologist) does a great job on props and shafts in the Keys. His email is
propdrkw@gmail.com. Dan used a shop in Miami to fabricate the strut. I have J-30 hull #363 - 3/4 inch shaft on a Yanmar 2GM. The Machine Works part number 19064 was used as the baseline strut. We used the strut info on the J-30 spec info as reference.
Strut: Cast bronze installed in molded recess in hull. Pertinent I.O.R. dimensions as follows: ST 1 = 18mm, ST 2 = 70mm, ST 3 = 79mm
Other: I.O.R. dimensions:
ESC = 201mm
ESL = 670mm
PRD = 356mm
Reference:
J/30 Class Rules and I.O.R Mark III
I also replace the shaft at the same time—I stayed with the ¾ inch rather than add more difficultly to the job.
