Robin 4 stroke Mark, You probably presumed that the Robin that I use is a 2 stroke because they make so many million of them and that is what...
Motor choice Mark, I have some experience with the 50 CC Honda. It was initially sold to me by my Honda distributor as being omni oiling when...
Prop Mark, The pictured prop is cast bronze. I am using it because it is inexpensive. I'm really not for sure on either the reduction ratio...
reduction for 1.6 HP Robin This is my solution to this problem of high RPM and low engine weight. The first picture shows the 1.6 HP 8,000rpm...
UJ power loss All mechanical systems consume power. I think that "V" belts are particularly bad in this regard. Short shaft systems use some...
engine oiling I have used both Kohler and Robin engines on my motors. Both the Kohler and Robin co.s sent people to my facility to see how I...
Thank you gentlemen. However, I am not as comfortable with the computer as I am with a lathe. You're talking to a diansore [spelling] here. I...
rifraf, I finally bit the bullet and had a J profile micro groove 4" pully made from glass filled nylon for the driveshaft side and am useing a 1...
plastic lumber I build with "trex" all of the time. It is way heavier and has no tensil strength. It has great compression strength. There...
Mark Wo., Just a brief up date. I finally, heavy on the finally, have assembled the parts for an affordable and light reduction for these...
progress, Mark W. I have purchased 3 motors for this project: a honda 4 cycle, 2.5 HP, and 2 Robin 1.6 HP 4 cycle motors. I spent $1,000 on...
drive tub material Drawn over a mandrel, DOM, seamless material is made to very close tolerances in either steel or aluminum. Both of the ID and...
