46fx Pumped???
 

Can and os 46 fx be pumped?, and.. it is woth?

RE: 46fx Pumped???
 

Yeah Daniel...


Putting a $37 pump on an engine that cost about $110 and (being peeling ABN) should be worth about $40, or less...
As a replacement to proper 'plumbing' of the fuel system.

...And put a $50,000 stereo sound system in your $2,000 used car, while you are at it...


I guess you understand what I mean.
Don't take this as a personal insult.

RE: 46fx Pumped???
 

suposing that the cost is not an issue... have someone done it?

RE: 46fx Pumped???
 

Explain what you mean by pumped. Do you want to know if it can be supercharged or equipped with an aftermarket pump to assist in getting fuel to the carb, if supercharging is what you've got in mind that is very difficult on a glow two stroke.

RE: 46fx Pumped???
 

Dan:

I have to agree with Dar on this one. A pump on a 46FX is like putting a Balenciaga dress on Miss Piggy. She looks no better, just costs more money that way.

Properly set up no common glow engine is going to run any better on a normal sport plane with a pump or pressure (Cline/Iron Bay) system.

There are special cases, a scale plane that just will not allow a large enough tank right behind the engine for example. Or a sport twin with small nacelles, using a single tank in the fuselage.

Even flying 3D with the nose straight up can be made to work well without anything more than muffler pressure.

All this being said, if you want a pump to play with, get one and enjoy it.

Bill.

RE: 46fx Pumped???
 

Using a pump allows you to put a larger carb on the engine for more power where it makes up for lower fuel draw. Check out the carb throat size on the pumped OS 61 compared to the unpumped version and the difference in power. There's nothing the matter with the 46 FX. The peeling problem is old history.

RE: 46fx Pumped???
 

Gord:

When you start going for maximum power "Conventional rules" go out the window.

You mentioned carb size. The K&B Q40 engine comes with a carb bore larger than most 0.90 engines. It absxolutely will not run without a pump or some form of elevated pressure system.

Bill.

RE: 46fx Pumped???
 

Yes, something about cramming as much air,fuel mix through the engine in one revolution. Sometimes they need a little help:)