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Hondas EXP-2 1993 2 stroke Dakar bike even though it wasnt efi
they were already on the way and dropped the ball.
http://www.motorcycle.com/manufacturer/honda/honda-exp2-14293.html
You're missing the point of the actual benefits of DI, and why it is so much better than FI or carb for a 2-stroke.
Sound's kinda similar to what Lotus and others are doing:
Lotus Omnivore
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I fully understand the true benefits of DI and welcome them. I think it is you who are missing the point. DI can offer so much more than good fuel economy and low emissions and longer engine life. DI is the key to a 100% tunable engine. You can have whatever you want with DI when taken to it's full advantage. You can have fire breathing tire spinning rocket ship power or you can have nice tractable stump pulling power all with the same engine. That was all I was getting at.
You should check out the future of two strokes web site when you get a chance. I don't have the link handy but I will find it for you.
http://www.dirt-bike-tips-and-pics.com/future-of-two-strokes.html
At the bottom of the page it will direct you to the next installments.
This is a great read.
Champagne tastes on a beer budget. Dumb.
eye opening
I had never heard of a "mechanical fuel injection" system like what he had on that bike....but whatever he did.....it would be something you would have to see in person to believe it.
The rider's name is Max Harris. He has also won TWICE at the Las vegas US Open! I think it was before he hooked up with FIRE 1.
His website is small , and not very informative......but i'm telling you guys , this dude knows how to build a motor! >>>> http://www.fire1racing.com .
I also know he did some work on some bigger 250's and 450's.....so it's not just the 2 strokes he works on.
DI is just now hitting all of the (4 stroke) cars. BMW got it in 2011. Nissan got it in 2008. Porsche 2009. But it is the future.
DI does in fact create a dramatically wider powerband.
KTM has publicly stated that they have good running prototypes w/ DI but due to the additional cost and weight that they won't due it until Euro III requires them too.
Honestly, I'd rather KTM just build a 350cc 2 stroke w/ a non tuned expansion chamber that creates less peak hp but a very wide powerband using a carb. It would not have to weigh any more than a 2011 250SX and w/ 350cc available it would not be hard to create close to a 450F type of powerband all around.
2 strokes are peaky because they are tuned for max power. They don't have to be that way.
Suzuki is the only one not using DI or a version of it.
Polaris uses a normal throttle bottle injector, and one in the transfer port.
HP and Size 2 vs 4, the 2 stroke is cleaner burning with less emissions.
The boat industry has proved this over and over.
DI means the injector is straight into the combustion chamber. Not transfer port or any other port or any other motor part or area. You know, that space between the top of the piston and the cylinder head? Show us where Honda, Kawi, Yami, Suzuki, KTM, or anyone aside from BRP or one of its companies is using that - and not in a prototype.
http://www.google.com/url?sa=t&source=web&cd=1&ved=0CBkQFjAA&url=http%3…
Too cool.
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Any current EFI sled passes CARB standards.
Pit Row
is a company, right now, that offers fuel injection for 2 strokes...I don't know if their F.I. is programmable or not, but it could be, easy, if they wanted, and there was a market that demanded it...
BMan-
Also with electric bikes coming along, it could be a case of too little, too late.
Would be a good simple alternative to DI, you can still run a carb or starndard FI
So even 4 strokes will be more restricted.
No reason to complicate what works good with a carb.....waste of money.
Only real reason to do DI is EPA compliance.
Boats did it for that.
Snowmobiles mainly due to cold weather and high altitude and big changes in both on the same ride.
Somewhere there is a KTM inteview where the guys says they have a DI bike on the shelf, but see no reason to put it out as it will cost more, be more complicated and break easier and a carb does quite well on a 2T motorbike.
So until the EPA bans carbed 2 strokes, don't get your hopes up.
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