@area_educator: Well, as you note that it could be a significant performance benefit for track-day cars, but could also be employed for efficiency-sake in the smallest passenger cars. Compare the performance and weight of Triumph's 1050cc triple to a Toyota 3zz or 4zz, for example.
Frankly, my two-wheeled tastes are geared toward achieving more mobility and performance with less. Sure, it's fun to see such bizarre contraptions come to life, but primarily as engineering and fabrication excercises. Ultimately, other than on paper - or perhaps the dragstrip, you're not greatly improving the performance (or fun) by adding a big heavy automotive engine to a bike. #subaru
@HammSammich: What will I find if I compare the 1050 Triple with the 3zz? That the 3zz is 20 hp down, but that it makes 22 ft-lb more torque and that it does so probably about halfway to redline while the Triple reaches its peak torque 3/4 of the way to redline?
How well is an engine that's a stonking great engine in a 416 lb streetfighter going to perform in a 2500 lb car? Or even a 2100 lb car? Do you think driveability, NVH, might suffer from having to constantly rev the thing at 8,000 RPM to get anything done?
@area_educator: Indeed, for most bikes, tuning is towards horsepower rather than torque as that's where the performance is needed, but the 1050 triple I referenced, in particular, is well suited to adjustments that increase the torque (I know - while sacrificing horsepower). Additionally, most dyno tests show that torque peaks at 4500-4750 Rpm on that motor (as installed in the Tiger w/ a 10,000 RPM redline), which is somewhat high, but not unacceptable for a commuter car. Reliability and service endurance when pressed into use for a far more demanding duty than designed are certainly issues.
Look, I'm no automotive engineer (and for all I know you might be), and I appreciate that it's not as simple as bolting motorcycle engines directly into every passenger car. But I think it is a far more interesting challange with a much greater potential gain to use motorcycle engines in cars than the reverse. #subaru
@HammSammich: I got the "3/4 of the way to redline" from a graph showing the Speed Triple's torque curve (don't recall where, off the top of my head-- but I probably googled "Triumph 1050 triple torque curve". I will grant that the Triple's torque curve was surprisingly flat for a sporty motorcycle engine.
No, I'm no automotive engineer. I agree that, while amusing, stuffing a car engine into a motorcycle has limited utility (I recall reading that bikes built around VW flat fours were good tourers).
I just think that we (versatile motor enthusiasts) tend to look at a great motorcycle engine with these crazy HP numbers in such a small package, and then put on our rose colored glasses and envision that engine in a car as the best thing ever. Sadly, I think it's an idea with limited utility.
Don't get me wrong-- I often LOVE ideas with limited utility. I've got a 2 and a half door Saturn SC2 coupe which I'd like to convert to a midengine beast with a Northstar V8 where the back seat currently is. It's a terrible idea, clearly.
There are certainly lessons auto engine engineers can learn from motorcycle engines, though. #subaru
Oooh. That'd be a nice alternative to the existing Car engine powered bat guano bike concepts. Like the Tomahawk. *Ironically the Tomahawk would be 4WD.
@High Speed Indeed: Mine has two wheels, a telescoping steering wheel, foot pedals, has an automatic transmission, is fire truck red, has big chrome wheels, and is powered by no-smog airplane engine that runs on unicorn farts.
11/24/09
11/24/09
Autocar just provided the ultimate car review phrase book.
11/24/09
11/24/09
11/03/09
I'd rather see more cars use powerful bike engines... #subaru
11/03/09
11/03/09
Frankly, my two-wheeled tastes are geared toward achieving more mobility and performance with less. Sure, it's fun to see such bizarre contraptions come to life, but primarily as engineering and fabrication excercises. Ultimately, other than on paper - or perhaps the dragstrip, you're not greatly improving the performance (or fun) by adding a big heavy automotive engine to a bike. #subaru
11/03/09
How well is an engine that's a stonking great engine in a 416 lb streetfighter going to perform in a 2500 lb car? Or even a 2100 lb car? Do you think driveability, NVH, might suffer from having to constantly rev the thing at 8,000 RPM to get anything done?
How do service intervals compare? #subaru
11/03/09
Look, I'm no automotive engineer (and for all I know you might be), and I appreciate that it's not as simple as bolting motorcycle engines directly into every passenger car. But I think it is a far more interesting challange with a much greater potential gain to use motorcycle engines in cars than the reverse. #subaru
11/03/09
No, I'm no automotive engineer. I agree that, while amusing, stuffing a car engine into a motorcycle has limited utility (I recall reading that bikes built around VW flat fours were good tourers).
I just think that we (versatile motor enthusiasts) tend to look at a great motorcycle engine with these crazy HP numbers in such a small package, and then put on our rose colored glasses and envision that engine in a car as the best thing ever. Sadly, I think it's an idea with limited utility.
Don't get me wrong-- I often LOVE ideas with limited utility. I've got a 2 and a half door Saturn SC2 coupe which I'd like to convert to a midengine beast with a Northstar V8 where the back seat currently is. It's a terrible idea, clearly.
There are certainly lessons auto engine engineers can learn from motorcycle engines, though. #subaru
11/02/09
11/02/09
11/02/09
11/02/09
Oooh. That'd be a nice alternative to the existing Car engine powered bat guano bike concepts. Like the Tomahawk. *Ironically the Tomahawk would be 4WD.
11/02/09
@Pessimippopotamus: Or the Hemi trike. I'm sure everyone's seen these before, but just in case... #subaru
11/02/09
11/02/09
Here's what a Subaru on three wheels looks like. I guess as they shed wheels they look worse, or better if you like that sort of thing. #subaru
11/02/09
Subaru picture #subaru
11/02/09
11/02/09
11/02/09
11/02/09
11/02/09
@pauljones: Your description made me think of this thing. #subaru
11/02/09
11/02/09
11/02/09
11/02/09
11/02/09