Test of ce's GY6 Cooling Shroud/Scoop By Bashan (Read 11,036 times)

[ce]

A scientific approach determines not what is true, but what is not true. Then it eliminates all possibilities but the truth.

The objective of the test is to prove the scoop doesn't work.

Anyone can build an air conditioned Space Shuttle Lunar Module Martian Rover with parts he bought at Home Depot and The Dollar Store, and when no one can prove it won't work, they'll send it up.

Godspeed, you brave astronauts on the Space Scooter, bring us back some rocks.

[gross392]

Mass flow rate is density x velocity x area which gives you an amount in mass/time unit. usually lbm/s or kg/s. Assuming that the density and velocity aren't changingby any huge amount and the area is shrinking the mass flow rate must go down as well.

The only part that is throwing off my calculation is the "ram air" that the scoop provides. It is actually catching air at roughly the velocity the scooter it travelling. However at a stand still it is hindering the fans ability to suck in air from all angles.

The ram air might help if you had air holes drilled around the fan so the excess air can be blown around the fan. The fan is already blowing as much air as it can when operating at the engines rpm. Blowing ~45mph air into a scoop and around the bend will not provide enough force to increase the fan's rpms.

The scoop is a good idea, but i think it should be directing air into a stagnant spot though. Maybe direct the air onto the bottom where the oil drain plug is, but that would require a lot of modification to the scoop.

[ce]

Ok, ok, ok, but you can't slow a fan down that has 8 horsepower from the Mighty Mighty GY6 crankin' it faster, rollin' it harder, humpin' and pumpin' like a big bass drum!

That's like a team of 8 horses, and not no faerie tale horses like Lippanzers all prancing and high stepping, real badass horses like Clydesdales and Percherons, 18 hand horses, with a hoof as big as yer head, that's what I'm talkin' about!

GY6, learn it, live it, love it.

[gross392]

Earthman that's why I said 45 mph INTO the scoop and THEN around the bend. We all know there is friction and turbulence, (also why you can't just bolt on an air filter without a "velocity stack") I just didn't feel the need to spell it all out.

[ce]

What about wind chill?

Is the air introduced at 45 miles an hour cooler than stationary air?

[Alleyoop]

Whew!! Man all these air induction experts really boggles the mind. Lot of hot air is being blown around to cool a little 4 stroke engine.

Just to clarify, the air coming in will not speed up the fan, the fan is being turned by the crank so it will only turn as fast as the rpms. It is not a free wheeling fan moved by the air.

EM wrote:
Ally opp, jet intakes are not working with a air source that is a "pressure flow" meaning their source is suction with a single fan in and pressure out the back with heat e

So are you saying the fans on the stator are not sucking in air and pressureing it out over the engine under the shroud. Maybe a little guy is under there with a fan moveing the air under and OUT over the engine.
Alleyoop

[Bong]

Well, It does Look cooler So when are ya going into mass production CE? I want one for my 50cc and for a 150

[sprocket]

>>Maybe a little guy is under there with a fan moveing the air under and OUT over the engine.

That part is hard to find in the scooter manuals Alley, but I got a picture of the guy the other day... ;-)

Attachments:

[Alleyoop]

What a bunch of B.S what do you do make this up as you go along or do you get this stuff from readers digest(HAHA).
Of course we are still friends we are just having some good discussions.
But Think Hard about this:
Alleyoop

[sprocket]

Love the scooter helmet in that picture Alley...circa 1910?

I'm the one...hehehehhehe

[Alleyoop]

HEHEHE!! Funny Funny Funny, I mispelled the word "Garnered" and it came out as "gardened"
nothing to do with your garden JR. enjoy and eat hearty.

Who started this anyway,
Ce I guess it was you and then the NAY sayers and air experts came out of the woodwork to criticize your work before it is even tested (NICE).
Alleyoop

[Alleyoop]

Well you know where the scoots come from, do you think they have a Technology and Design department trying to improve the engine designs that have been around for decades. Just look at some that are water cooled and where they put the radiators and fans. They could design the scoots body and or frame to really accomadate the radiators where they will do the job. But they are just building the engines as they were built decades ago. Leave good enough alone as they say and don't rock the boat.
Alleyoop

[gross392]

A ramjet? get real. a ramjet needs fuel for be ignited to the incoming air which increases the temperature between the inlet and outlet. and since PV=mRT if temperature goes up so must pressure if all other variables are the same. this pressure increase is our the back which produces thrust.
Without the gas being ignited it is simply a nozzle

[ce]

It's a psychedelic pscooter form outer pspace.

I guess the most I was hoping for was to draw in cooler air from outside the engine compartment since I had already read about fans and small holes and all the principles laid out by JR's experience. If you stick your hand in the scoop while it's running, you definitely feel much cooler air moving into it.

Now I'm thinking of an evaporative cooling pad with a water drip system for the scoop.

There's water on Mars, you know, maybe if we got some of that it would cool the scooter even better.

[Hammerspur]

May 18, 2011 7:56:24 GMT -6 ce said:

There's water on Mars, you know, maybe if we got some of that it would cool the scooter even better.

That would work, it's real cold there isn't it?! ;D