OS MAX .10 FP Stock engine

Here we have a very new, OS MAX .10 FP that we are breaking in for another experiment. Small engines like the .049 suffer from a unique malady. They typically have a glow head instead of a glow plug. When your glow filament burns out, one strategy has been to drill and tap the head to take a stock glow plug. It looks like a neat solution but the result is a loss of some 1,000 to 1,500 RPM out of a top end of 18,000. Not good.

It appears that because of the relatively small combustion chamber, the threads themselves, somehow interfere with and hinder good combustion.

The solution is to drill and tap for turbo plugs. These seal by way of a tapered seat at the tip of the plug. This isolates the threads and allows for a clean, combustion chamber. The result is no loss and even a gain in power. This is illustrated here.

http://www.rcuniverse.com/forum/m_4533758/anchors_4533758/mpage_1/key_/anchor...

Looking at the cylinder head of the OS, revealed a similarly small combustion chamber. Naturally, it occurred to me, what if you installed a turbo plug. could you "recover" 1,000 rpm as with an .049?

Well, we're going to find out.

As illustrated here, http://www.youtube.com/watch?v=qHQhD1PpJUQ a stock engine can be tinkered with to good effect. The Brodak .049 was taken from 12,000 RPM up to 13,500 RPM just with the addition of a turbo plug head button. From there, we installed the necessary components to convert this great little engine from a steel/iron engine into a modern, AAN engine and also turned it into an .06

The result of that was MUCH more power with an actual reduction in weight. From 12,000 to 19,900 a whopping 65% increase.

That translates into about triple the HP and triple the thrust.

We will be doing the same to this OS .10 engine and hopefully, getting similar results.

Stay tuned.

Category:

Howto & Style

Tags:

• OS
• Engine
• RC
• Airplane
• Glow
• Nitro
• Diesel

[lothar2048]

I'm owning the same engine, and i'm searching for a nice kit for this engine. The only one i founded was on towerhobbies, and it was a self buid kit... Does someone knows a balsa wood made kit for such kind of engine? I also have the same problem for a Norvel Big Mig Motor Sport .061 with throtle... The only one i founded was on the same site, and was the P51 Mustang kit... Any idea please ? !!!!

[hopeso]

Go to Sigmfg(*)com and find their kits from Herr Engineering. They appear to have the best kits for small engines such as the .061 and the .074.

About .10 engines, there are none that I know of. I normally take an ARF (self built?) electric model and adapt it to use an engine instead of an electric motor.

[SnackPimper]

I don't think you'll ever get that wooden bench to fly. It looks way too heavy.

[lvsupertech]

LOL a bit larger engine might move the bench on wheels.

[dallasrichar26]

This video went viral on Djibouti

[Chris40679]

So how do you start it?

[mfsxlover]

ANYONE KNOWS HOW TO FIRE FOR THE FIRST TIME THE OS MAX 10 FP STOCK ENGINE. I AM NEW TO THIS. MANY THANKS

[suvyMan2007]

What sort of fuel consumption do you get out if that?

[Zzsmile]

interesting experiment,Thanks for sharing.

[Sunflyer70]

Nice Engine! I have the same one too. What propeller do you use?

[hasanjohnh]

Just close the engine air intake! :)

[pow0006]

how do you stop it?