Supercharger???

[will.naylor]

Hi all.
Being a complete technophobe I have no idea about this sort of stuff but does the item below really work? It all seems to cheap. Could someone with a bit more technological knowledge than me please help?

Thanks

Will

http://cgi.ebay.co.uk/SUPERCHARGER-fo

[zumbruk]

Scam.

[oggs]

No mate, doesn't do a thing
Save ya money

[will.naylor]

Thanks. I'll go for some leven shiny bits instead - they'll make my car go just as quick and look better!!

[jellison]

Christ I MUST have one of those.

[griffter]

OK, the advert's poorly worded and laughable, but I don't see why it wouldn't work to some degree. The idea, presumably, is to reduce intake pumping losses by letting the blower do the work of blowing the air in, instead of the engine do the work of sucking it in. According to my A-level physics the consequential load on the alternator ought to cancel out any saving - but in the short term it probably wouldn't as the battery would assist instantaneously and be recharged over a longer period of time. Thus, I don't see why short-term power 'gains' shouldn't be experienced?

Having said that I definitely wouldn't buy one, not even for 99p.

[David H]

griffter said:

OK, the advert's poorly worded and laughable, but I don't see why it wouldn't work to some degree. The idea, presumably, is to reduce intake pumping losses by letting the blower do the work of blowing the air in, instead of the engine do the work of sucking it in. According to my A-level physics the consequential load on the alternator ought to cancel out any saving - but in the short term it probably wouldn't as the battery would assist instantaneously and be recharged over a longer period of time. Thus, I don't see why short-term power 'gains' shouldn't be experienced? Having said that I definitely wouldn't buy one, not even for 99p.

It will not flow anywhere near the amounts the engine requires, hence the impellor will be a massive restriction on the intake. So no, it won't work.

[Podie]

Oi Vixpy, get one of these and do some dyno runs!

[GreenV8S]

It might work on a lawnmower, but an ickle 300W motor isn't going to work on a moderately powerful car engine. It probably isn't even going to be enough to overcome the drag of the fan blades, meaning that even with the fan motor working flat out there will be a net pressure drop across the fan. However, if you fit this you may possibly be able to feel the difference as you turn the fan on. What you are feeling is the engine changing from strangled to mildly restricted.

There is a reason why mechanical superchargers are ing big things that draw several BHP off the crank. It takes that much power to produce any significant pressure rise on the intake air as it screams into the engine at 300 mph. Cute ickle lectric motors really don't stand a chance. The most likely outcome is thet after a few weeks of use the engine is going to suck the blades off the fan ...

[chassis 33]

You disbelieving bunch of wet blanket marshwiggles, ofcourse they'll give huge power increases, I reckon the advert is very conservative in it's power increases. So much so I may well recommend it for this thread www.pistonheads.com/gassing/topic.asp?t=225143&f=66&h=0

Regards
Iain