On Thu, 20 Sep 2007 22:46:19 -0400, clare at snyder.on.ca wrote:

On Thu, 20 Sep 2007 15:42:35 -0700, wrote:

On Sep 20, 6:37 pm, wrote:
On Sep 20, 6:35 pm, wrote:



On Sep 20, 6:33 pm, wrote:

On Sep 20, 5:51 pm, Steve Walker wrote:

Newshound wrote:

SNIP

For racing, they had a five cylinder 125 back in the '60s

Got any links or confirmed info? G

This was beat to death about a year or two ago.

I'm still interested in reading about one.

--
Steve Walker
(remove wallet to reply)

Well, using wiki as a starting point (its at least good for that):http://en.wikipedia.org/wiki/Straight-5
"The smallest straight-5 was found on the Honda racing motorcycle, the
125cc RC149, raced in 1966"

OK, google that model#, that gets us staright to honda:

http://world.honda.com/goodwood/machines/rc149/

A modified version of the RC148, the world's first 5-cylinder 125cc
road racer won the 1966 Manufacturers' and Riders' Championships.
East German GP winner. Rider: No.177 Luigi Taveri
Engine Air-Cooled 4-st. Inline-5 DOHC 4-Valve Gear Train
Displacement 124.42 cm3
Max.output over 34 PS / 20,500 rpm
Max.speed. over 210 km/h
Weight 85kg
Magneto Ignition 8-Speed Transmission

Dave

A little more info:

http://www.vf750fd.com/Joep_Kortekaas/1966.html

Dave

And there was even a 9-speed all-magnesium version.

Mein Gott!

http://www.cyclechaos.com/wiki/Honda_RC149

Dave


Nice video here

http://www.nexialquest.com/westcoastcbx/rc149.html

Dave


A friend who has raced all kinds of classes claims to have seen and
competed againt a Honda Six in the 90CC class. It was apparently
sleeved to a smaller bore for the 90cc class - this was a boardtrack
"speedway" bike.
Look ma - NO BRAKES!!!!

This is extremely hard to believe. The rc166 six had cylinders of 41mm
bore. If it had been sleeved to a displacement of 90cc the bore would be
about 25mm. If you look at the pictures of the engine internals you can
see valve pockets in the piston domes; without complete redesign of the
cylinder head the valves would interfere with such a sleeve; and I suspect
that the conrods would also have to be different to fit the pistons
required.

What other stories has your friend told you?