Turbo!

[militarymonark]

Has anyone seen this type of turbo on any bikes

http://www.ebay.com/itm/Turbocharge...a&item=290641274170&pt=Race_Car_Parts&vxp=mtr

 

[militarymonark]

or this one, http://www.ebay.com/itm/ELECTRIC-TU...&pt=UK_Motorcycle_Parts&vxp=mtr#ht_1674wt_986

 

[HeadSmess]

the elctric one would be handy as a blower on my forge and nothing else, they cant make pressure.

the real turbo...thats on my wish list now

but please. on a pitbike, not a bicycle.

 

[militarymonark]

I'd like to put it on my whizzer

 

[Deleted member 12676]

Turbos that utilize the exhaust on a two stroke are not a good idea because then it would screw up the effect of any expansion chamber you put on it, and I doubt it would give more power than an expansion chamber. The problem with two strokes is not inability to breath, but inability to retain what it has breathed since 20% of it is lost out the exhaust port before being burned. An expansion chamber stuffs that lost 20% back into the cylinder at top rpms for a power boost there.

 

[HeadSmess]

not only that, it also raises crankcase compression, increasing charge loss through the exhaust port with bad transfer designs, increases strain on crank case seals and still doesnt do a thing for the compression ratio, therefore making no affect on performance, if not a major loss in performance...

ill chaange the pitbike/bicycle statement to

"on a 4 stroke, not a 2stroke, please"

 

[motorpsycho]

yep an expansion chamber (if set up right and tuned) will give you a supercharger effect. a chamber is a lot cheaper, and a lot easier to install....Just bolt it on.
i'm afraid that setting up a turbo to actually work on a 2 stroke would be pretty difficult.
you'd have to beef up the bottom end to handle the boost pressure. as well as install the turbo, make new exhaust, and an intake, plus run an oil line in and an oil line out to the bearings in the turbo. then you'd have to make up some sort of gravity feed oil reservior that woudl not only supply the oil to the turbo bearings, but it woud also have to take in the return oil from the turbo bearings.
to get free horsepower from a 2 stroke, you need to take advantage of the exhaust and put on a good expansion chamber.
if you have never ridden a 2 stroke with a properly tuned expansion chamber, you'll be in for a surprise. when the pipe "comes on" it's the same effect as if it had a turbo or a supercharger.

putting a turbo on a 4 stroke would be easier...such as this:

a test run:
http://s1191.photobucket.com/albums/z462/Isaiah3g/?action=view&current=4892cc42.mp4

 

[HeadSmess]

a two stroke CANNOT be turbocharged.

exhaust port opens, then the transfers open. air starts pumping out from crankcase.

piston has covered up intake port so turbos just trying to blow air down a blocked hole.

any increase in crankcase pressure simply forces charge out and into cylinder faster through transfers.

transfers closed, but exhaust port is still open. any extra air that somehow made its way into the cylinder to raise pressure, wont. the exhaust ports open.

therefore youve added a lot of inneficiency for no gain whatsoever, just a loss.

but **** psycho! that chopped schwinn looks...like it might need rego!

with that fleabay turbo that militiary linked it could be made a lot neater the closer you can mount a turbo to the ports, the better.

 

[MikeJ]

That's one heck of a unique ride. And a unique crew. The bike ought to be as much fun to ride as it will be to watch it be ridden.

So turbo chargers are out? So I'm willing to bet some curious person will next ask, "What about a belt-driven centrifugal supercharger, shaped like the pistol-grip hair dryers of long ago?" I'll bet somebody will ask that....

 

[max350]

a two stroke CANNOT be turbocharged.

exhaust port opens, then the transfers open. air starts pumping out from crankcase.

piston has covered up intake port so turbos just trying to blow air down a blocked hole.

any increase in crankcase pressure simply forces charge out and into cylinder faster through transfers.

transfers closed, but exhaust port is still open. any extra air that somehow made its way into the cylinder to raise pressure, wont. the exhaust ports open.

therefore youve added a lot of inneficiency for no gain whatsoever, just a loss.

but **** psycho! that chopped schwinn looks...like it might need rego!

with that fleabay turbo that militiary linked it could be made a lot neater the closer you can mount a turbo to the ports, the better.

Two stroke engine can be turbo charged - snowmobiles for example http://www.tikka.se/default.asp?ID=80&menu_item=80