Has anyone tried one of these?
30 October 2002, 09:59 AM
#1
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30 October 2002, 10:56 AM
#3
As it uses the exhaust gas on a direct drive it can only marginally add back pressure as a result of the small amount of energy required to drive it. Unless someone has invented perpetual motion then it is more snake oil but with minor modification it could be used to produce variable pitched whistle subject to engine revs. Might be the next craze after illuminated screen washers to hit the Nova community.
30 October 2002, 11:23 AM
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Have to admit I think the theory is bullmud (especially if the car still has a cat) but I *do* like the look of the endpiece 
Let's face it, there's a bit of a Max Power boy in all of us ... or is it just me?
Let's face it, there's a bit of a Max Power boy in all of us ... or is it just me?
30 October 2002, 11:36 AM
#6
OK Moray. So the gas is made to spin and that takes energy and adds a slight back pressure. Do not see how self induced lateral momentum (spin to you and me) can result in an extraction of exhaust gas although a carefully designed cone might.
30 October 2002, 01:45 PM
#7
If it's so good and cheap, why don't the manfacturers use it or any race teams? Never seen it in F1 either....
You could always buy it Moray, as an experiment and give us the results.
Have you tried Broquet?
F
You could always buy it Moray, as an experiment and give us the results.
Have you tried Broquet?
F
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30 October 2002, 04:49 PM
#8
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Surely its just a restriction.
There would be some advantage to having back pressure at very low revs, but the opposite at higher revs.
As rpm increased, so would the back pressure created by this restriction.
There would be some advantage to having back pressure at very low revs, but the opposite at higher revs.
As rpm increased, so would the back pressure created by this restriction.
30 October 2002, 05:53 PM
#10
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Conceivably, with the twirly-motion, the exhaust should be more 'organised' in its leaving the system, and therefore be able to get out quicker (as long as it's not supersonic flow the motion will pass upstream & therefore aid in extraction). Normal fluid dynamics.
However, it's far enough down the system that the flow should have sorted itself by then anyway, and if it hasn't, I think you're going to get better gains by removing the hamster/squirrel/sparrow jammed in there anyway.
the motion will pass upstream & therefore aid in extraction). Normal fluid dynamics.However, it's far enough down the system that the flow should have sorted itself by then anyway, and if it hasn't, I think you're going to get better gains by removing the hamster/squirrel/sparrow jammed in there anyway.
30 October 2002, 08:16 PM
#11
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Bobbins absolute bobbins!
I'm an engineer for a large chemical company and if such a theory worked, we could save a fortune on booster pumps as we could stick one of those in a pipeline to increase the fluid velocity!!
As someone has already said, it acts as a restriction to the flow.
Steve
I'm an engineer for a large chemical company and if such a theory worked, we could save a fortune on booster pumps as we could stick one of those in a pipeline to increase the fluid velocity!!
As someone has already said, it acts as a restriction to the flow.
Steve
30 October 2002, 09:05 PM
#12
I rolling road tested one of these on my Fiat 126
Before:
I managed to move the rollers in the first two gears, but car bogged changing to third and run was aborted!
After(turbo twister fitted):
The car pulled hard and with new inthusiasm, got into fourth and the massive torgue increase lifted the car off the rollers and it ploughed through the back wall of the rolling road garage!
Needles to say haven't tested it on the road as my car's now wedged under the reception desk of the adjoined plumbing fixing centre!
James
Before:
I managed to move the rollers in the first two gears, but car bogged changing to third and run was aborted!
After(turbo twister fitted):
The car pulled hard and with new inthusiasm, got into fourth and the massive torgue increase lifted the car off the rollers and it ploughed through the back wall of the rolling road garage!
Needles to say haven't tested it on the road as my car's now wedged under the reception desk of the adjoined plumbing fixing centre!
James
30 October 2002, 09:38 PM
#14
ROTFLMAO?????????
Floyd is one to presume you are dyslexic and your Flymo is decomposing?
If so may I reccomend the use of a Billy goat for the reduction of excess pasture on your land?
Please note the use of Billy goat as extra shadow will be cast on the lawn in 'direct sunlight' by the 'genital sack' thus reducing hosepipe use during dry spells.
James
Floyd is one to presume you are dyslexic and your Flymo is decomposing?
If so may I reccomend the use of a Billy goat for the reduction of excess pasture on your land?
Please note the use of Billy goat as extra shadow will be cast on the lawn in 'direct sunlight' by the 'genital sack' thus reducing hosepipe use during dry spells.
James
30 October 2002, 11:29 PM
#15
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TFF jameswrx.
I too have suffered at the hands of exhaust mods, having fitted a 'replacement tail pipe' to a 1.4 escort because "it's cone shape would increase the velocity of the exhaust gas, giving increased bhp and mpg"
All it did was look w@nky and catch on speedhumps.
It did make a sound like the mating call of the GNU under hard accelertion, though...probably hence all the sh1te on my car every morning.
Oh no, sorry, that was the ford badges.
I too have suffered at the hands of exhaust mods, having fitted a 'replacement tail pipe' to a 1.4 escort because "it's cone shape would increase the velocity of the exhaust gas, giving increased bhp and mpg"
All it did was look w@nky and catch on speedhumps.
It did make a sound like the mating call of the GNU under hard accelertion, though...probably hence all the sh1te on my car every morning.
Oh no, sorry, that was the ford badges.
31 October 2002, 01:02 PM
#17
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I still don't understand what the agression is towards Broquet 
- the people who are in a position to measure how well they work say that they do, those who can't measure the results say that they don't... so... the result is that they don't?
Can't follow that one myself. It's probably the drawback of thinking
- the people who are in a position to measure how well they work say that they do, those who can't measure the results say that they don't... so... the result is that they don't?Can't follow that one myself. It's probably the drawback of thinking
31 October 2002, 02:30 PM
#18
Nom: I tried to measure any improvement and concluded there was none. I think I am better placed than many to be able to identify any benefit if one existed. Bob Rawle admitted to me last week that even if there was a benefit it would be nulified by the use of octane booster which I think most of us use anyway.
Not aggression on my part at this time just I do not like being taken for a mug along with lots of others on unsubstantiated claims by the vendor of Broquettes.
Not aggression on my part at this time just I do not like being taken for a mug along with lots of others on unsubstantiated claims by the vendor of Broquettes.
