Dalhousie - Air Powered Go Kart

[Mrengineerwannabe1]

Representing halifax!

I'm going there.

Q.

What course is this?

[MrPayton24]

how long can this go kart go for before u have to refill !!!

[dany080]

how big should the engine be if u want to put it in car?Should it be 4X4-rotary engines?And how much air should it be in the tanks and how many tanks?Total weight of car=4tons top speed=30-60km/h range=20km? And what about torque?0-?=? And noise? Sry i didnt watch all videos so i dont know why did u rebuild this engine...But good work anyway..

[door2doorman]

great presentation!

[ufoengines]

Really nice job!

If you want a real HOOT check our my "Tesla Turbine Go Kart" and my "Leaf Blower Powered Go Kart" videos.

What do you guys thing of using a turbine in and air car power train with and multi speed trans. or and electro mechanical trans. ?

[07hottie0]

whare is the indoor track??????? (what city)

[NikolayTrotsenko]

Hi.

Question why you are using only the standard ports of the intake and output.

It is sensible to make in the stator, two more windows, with a rotation of 180 degrees.

Considering the video did not saw any

[davespencer001]

Were not actually using the standard ports. We made a new exhaust port and are using the ignition and suction chambers for forward thrust. The compression chamber is now the exhaust. We could have optimized the chamber positions however we didn't have the budget to fully rework the engine.

[localdu]

looks like a wankel rotary. cool.

[RevanantGod]

it is

[superfunnyman123]

That is Great!!! very nice job!

[oldtilter]

Nice Job!..Alternative vehicles are allways interesting

[tayb0987]

very coll great job1!!!!

[spark300c]

what is the range on that thing?

[fizzguts]

Maximum of 3.5 miles if the numbers in the comments and intro are correct

[ORIF9]

I have 2 oddball questions...What's the decibel rating on the engine and how long does it last?

Mega thanx ahead of time for your response.

^_^

P.S. Keep up the awesome work!!!

[davespencer001]

We do not have the decibel rating however it would be similar to a small motorcycle. We could easily reduce this and increase the power of the engine as well. We used an old snowmobile engine for the project with one rotor. If we used a multi-stage step down with increasing rotor sizes. We could extract much more power per air vol. This multi-stage step down technology is used in steam engines in the late 1800's. It was purely budget that kept us from doing this. We currently get about 5 min.

[ORIF9]

Still, either way...I think you did an AWESOME JOB!!!! ^_^

[davespencer001]

Thanks!

[fizzguts]

Quote "If we used a multi-stage step down with increasing rotor sizes. We could extract much more power per air vol. This multi-stage step down technology is used in steam engines in the late 1800's"

Nope

You misunderstand compound, triple expansion etc steam engines. Multi expansion steam engines work due to superheat and exhausting to a vacuum and the efficiency increase is in the 20 to 40% range over single expansion. Does not apply to air expansion.

[davespencer001]

Nope. It does apply. The rate of expansion effects the energy absorption of the air. That is why a pressurized vessel gets cold when you open it quickly.

[fizzguts]

Only if the rate of expansion allows your heat source in your case the atmoshere to transfer sufficient energy to counter the cooling due to expansion. At the rate you are using the supply this is minimal as the cylinder are where the cooling occurs even multi staging does not give you sufficient heat transfer area to make a, your words "major difference". Even in the theoretical idea case you are looking at maybe 40% better performance which is still just an interesting toy exercise

[sh3lbot]

air powered rotary :D i love you guys! can you build a air powered 4 rotor ;)

[rentoz]

Nice one! What's the name of the track used at beginning of the video?

BTW did you notify Guy Negre? I am sure he' ll love this.

[davespencer001]

Its not quite that easy to get air back in the tanks. The air would have to be at higher pressure then the tanks in order to get it back in. The tanks start at 3000 psi and we run air through the engine at 145psi. This means that the exhaust can be no more then 145psi. We would have to pump the exhaust air back up to pressure. Therefore it is of no benefit to put the exhaust back in the tanks. We do use a recirculation loop. We reworked the engine to use two of the three chambers for power.

[IceDragon387]

interesting.. though i still beleive theres away to get it back in at the proper psi, my mind keeps going back to the high powered hydraulic brake systems that use a storage tank and an accumulator to store i beleive about 5000psi of pressure. i will have to consult my old teacher on the system and compressed air with it. though i dont see why its not possible since mercedes was doing it with vaccum on their old 300D deisel cars.

[IceDragon387]

i was thinking about this all today. if you ran a line from the exhaust to a pressure regulator with a one way check valve, when the exhaust air gets to a certain psi you could push it back into the bottle. then you would have a never ending supply of presurized air....if not then you may need to throw an accumulator into the mix. but being as the engine shouldnt remove to much psi you should be able to reuse the exhaust

[IceDragon387]

And i didnt ask abour the recirculation because of power, unlike most ricers thats not the only thing on my mind. i was thinking of longevity, you can only last so long on 2 tanks, so if it can effectivly pump the air back into the tanks you could esentially have an engine that never runs out of "fuel". and since all engines are esentially airpumps, with a little R&D time i dont see why you cant make this engine run forever with just those two tanks constantly recirculating the air

[IceDragon387]

2 things...what are you using to lubricate the seals? and how long does it last running on the 2 tanks of gas or did you figure out a way to recirculate the air for reuse?

[2gbc]

who cares wat the fukin seals are lubbed with an i think recirculating the air would take away from the already poor horse power.. but that shit was pretty smart

i see some hybrid rotary motors in the near future

[IceDragon387]

u stupid? or just naive? if you dont lube the seals they will seize up, then the motor will not function properly and air will rush past the seals therefore losing even greater power, why not read up on the rotary engine. the apex seals need lubrication to function properly. which is why my rx7 and every other rotor has an oil injection system. and on top of that I CARE WHAT THE FUCKING SEALS ARE LUBBED WITH

[landon303]

fukin seals fuk em who cares