HI all. Ive been using 2 large Buhler motors in an Imara Tug for over 15 years. I purchased them from a model show selling bits and pieces. The can size is 51mm dia x 89mm long. 6mm shaft, and the only info on the end is "313 4 230 A". They run at around 3500RPM. After all this time they are still running fine, and the boat gets a lot of use, plus I have 2 spares. I was wondering if anyone has specification information on them filed away anywhere. I always get asked what's powering the boat, but can't tell them. See picture.
I have contacted the makers, but as they are so old they may not know or as in many cases not even reply.
Here's hoping. 😊