In article
,
bildan wrote:

On Mar 5, 3:59*pm, bildan wrote:
On Mar 5, 12:54*pm, Bob Kuykendall wrote:



On Mar 5, 11:31*am, bildan wrote:

'been scratchin' some paper.

It looks like a 2.6L flat opposed 8-cylinder could be made will not
too much difficulty from two Suzuki Hyabusa motorcycle cylinder
blocks...

Interesting. I'd like to see the SolidWorks and FEA on that crank, I
bet the webs and bearings get awful narrow when you go and double the
number of big ends strung along it.

Also, is there any credible evidence that this little motor actyally
does put out 130hp for any appreciable amount of time?

Having developed and raced tiny Formula IV road bikes, I came to
appreciate that the devil is in the details. And the more details you
have, the greater the opportunity for bedevilment.

The more I study airplane engines and their operating environment, the
more I come to appreciate the underrecognized genius of the big,
simple, slow-turning flat fours that came out of the 1930s. Parts you
leave on the ground will never break in flight.

Thanks again, Bob K.www.hpaircraft.com/hp-24

The Hyabusa's 130HP from 1300cc is about the most conservative power
estimate there is. *The bikes will go 180MPH as long as the fuel
lasts. *The engine is considered bulletproof in the motorcycle
application.

Well, yes but the cylinder blocks aren't directly across from each
other being staggered for wider the webs. *Unlike those slow turning
fours, there isn't much torque from each power pulse - just a whole
lot of them.

With a flat 8 you have the choice of a 'boxer' with each rod on its
own crank pin or the alternative with rods from opposing cylinders on
the same crank pin.

I went to check and the 'advertised' HP for the Hyabusa is 191 from
1300cc.

Is it supercharged? It MUST be a high-revving mother!

My 1967 Porsche 911S (normally-aspirated) gets 180 hp at 7500 RPM.

To reduce the displacement by 35% and add 5% power, there are only three
ways to do it:
1. Supercharging
2. High RPM
3. A combination of #1 and #2 above.

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