by palbietz » Fri Oct 24, 2014 9:04 pm
I recently finished building an old Dumas SK Daddle Too that my father had started building in the mid 80s (image attached). At the time he had also bought for it a K&B 3.5cc marine engine, #5464. I don't have the manual for it and while it does run, I have some questions. 1) Is it OK to run fuel blends that use synthetic oils, or should I use the fuels which only use castor oil, 2) I was planning on using 20 to 30% Nitro, is that OK, 3) Does anyone know how well this engine runs, is it a dog or does it compare well with current day engines of a similar size? 4) I had recently tried running the boat in a local lake and every time I launched it, the engine died. If I submerge the prop in water while holding it, it seemed to be OK. I have seen other forum posts that state sometimes it is best to give the boat a little toss into the water while upping the revs. I haven't tried this launch technique, so does anyone know if that is necessary for this engine. Any suggestions would be appreciated.
- Attachments
-
![SK Daddle Too.JPG](./download/file.php?id=40)
- SK Daddle Too.JPG (44.11 KiB) Viewed 9780 times