Thread: what do you think, are these BS ?

Originally Posted by RonMcGr

There are possibilities
First, fit a battery, then an alternator to charge the battery, then fit the dynamic electric supercharger. !!!

The drain on the lawn mover engine, trying to power an alternator which is trying to run an electric motor plus charging a battery.....
Better still, put the "Blower" on the side, it may help to keep the struggling motor cool

well have put a lot of thought into this and i might just get a 12 volt converter and run one big extension lead from the house so i dont have to drain power from the mower .

Forced induction



I've since added a snorkel adapter - sorry no pics yet

If I need a little more boost I just reach out the window and rev it a bit.

Cheers
Simon

Originally Posted by abaddonxi

Forced induction



I've since added a snorkel adapter - sorry no pics yet

If I need a little more boost I just reach out the window and rev it a bit.

Cheers
Simon

ROTFLMAO

^^ That made me laugh a LOT

Oh man that is some funny stuff ... got a sore gut now .

First.
I think it has a huge flaw in that it doesn't seem to have any form of speed control to match it's boost to engine revs or acceleration. It seems to just be "on". I have thought about this idea many times, electric motors can be controlled to the nth degree buy a cars onboard computer and done properly I see this as the future. A turbo restricts exhaust flow. This wouldn't.

Second.
To say that an electric motor can't produce enough air flow is bunkum. An electric motor works at approx 95% efficiency turning electrical energy into rotational energy. This is WAY ABOVE any internal combustion engine. So it would be possible to do this properly, I don't think this unit is doing it properly though, it would need a bigger motor for a start plus see first point.

Third.
It is not possible to directly compare output gas flow to input gas flow because the whole reason an engine works is that when the air/fuel mix is ignited it leads to rapid expansion of the gas forcing the piston down. Therefore the exhaust gasses are going to be flowing at a much higher rate than the inlet gasses.

Fourth.
I'm going out to buy a petrol leaf blower, I love that!!

Steve.

Originally Posted by Stephen Price

Third.
It is not possible to directly compare output gas flow to input gas flow because the whole reason an engine works is that when the air/fuel mix is ignited it leads to rapid expansion of the gas forcing the piston down. Therefore the exhaust gasses are going to be flowing at a much higher rate than the inlet gasses.

Steve.

But doesn't the volume of the air coming in have to equal the volume of the air going out? I can see that the air might be going faster on the way out, but the engine is not adding in additional volume from the ignition process is it?

Nice one abaddonxi

Wouldn't the exhaust gas be at a higher temperature and therefore have a larger volume? (Same mass, but larger volume?)