Bryan;
That's also why the BRM 16-cylinder Grand Prix car wasn't successful-its
power curve was WAY too peaky.
Regards, Neil Tucson, AZ
-----Original Message-----
From: Dick J [mailto:lsr_man@yahoo.com]
Sent: Tuesday, March 09, 2004 2:51 PM
To: Bryan Savage; Albaugh, Neil
Cc: land-speed@autox.team.net
Subject: Dyno Race
Bryan Savage <basavage@earthlink.net> wrote:.. the only race peak HP
You said it all there, Bryan. It took me many years - - -well into my
thirties, way back in the "olden days" as my kids say, for me to learn
that lesson. I remember racing a 500cc BSA single at Sebring at the
time. At the urging of one of my fellow racers, I had bought a new
RD-350 Yamaha to replace it. Alas, I had to have one last ride one the
old Bizzer before I turned it in.
Some of my memories from that day. The BSA had about 25 HP. The RD
350, though smaller, had about 48HP. No question as to which should be
quicker. The BSA was like a friendly old farm tractor. Put it in gear,
chug away, and start racing. I think the track on that bike was
something like fourteen turns and eleven gear changes. I took it for
it's last ride, put it on the truck, and fired up the awsome Yamaha in
it's brilliant yellow and black paint. Fourteen turns and fifty one
gear changes later, I was way off the BSA's time. I parked the Yamaha,
pulled the old BSA back off the truck, and went back to racing.
Yeah, that Yamaha had 48 HP aqlright, at something like 7600 RPM. It
was only seven HP up to seven thousand RPM, then jumped to 35 HP from
7000 to 7200, and then to 48 HP by 7600 - - - something real close to
that. If it accidentally slipped below 7000 at any point, you lost
everything except the base seven HP and it took a quarter mile to get
back up "on the pipe" again. That's when I learned that no matter what
the dyno says, or what published HP is - - what really matters is how
that HP and tourque come together out on the race track.
DIck J
In East Texas
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