I am new to 4 stroke. I am going to invert a 4 stroke in my new plane. I thought i wanted a saito 100. Should I stick with this and get a cline regulator? This set up seem complicated with refueling and finding a mounting for the cline. Should I consider a different 4 stroke that already has some regulator built in? Please give me some opinions on engines and why.

thanks

You may want to give more consideration to where you mount the fuel tank first. I run a inverted 100 on a P-51 with out a regulator. What kind of plane will it be on?

There is no good answer for that question.

If you go to my gallery you can see my DC-3 which has Inverted Saito 100s running from a central tank in the fuselage through Iron Bay regulators.

The Thunderbird is an Inverted OS fourstroke using a Dubro fueler and no glo heat.

The best way for me has been to start out with the least complicated combination and then add components until it performs to my expectations.

I am running a Saito 100 inverted in an H9 P51 with no reg or on board glow heat. It does not suffer any related fueling problems. It has been fairly reliable and mostly trouble free. Only 2 flame-outs in its 10-12 hour life so far.

The OS .91 Surpass 2 Pump is an extremely reliable performer in an inverted mounting at any orientation relative to the tank. Mine (inverted) has never had a surprise dead stick in 80 or so engine hours.

The YS FZ line is very good inverted too. Again, no need for regulators as they are part of the deal.

Iron Bays regulator will solve that problem. It has been a problem on a lot of U Can Do's and the regulator prevents the engine from flooding. The diaphragm stays closed until the carburator opens it with vacuum. Will not allow the engine to flood, no matter how much higher the tank is than the engine. Also allows you to put the tank anywhere in the plane you want.