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Old 05-16-2019, 08:34 PM   #1
Join Date: Mar 2019
Posts: 147
Lightened flywheel

as soon as I rev it +2-3Amps so charge rate is good.
That equates to less than 40 watts. It'll take a long time to recharge after each startup.

Last edited by steveSLO; 05-17-2019 at 07:34 AM.
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Old 05-17-2019, 02:20 AM   #2
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Re: Lightened flywheel

In the 70s, Suzuki had several differently-weighted cranks for different tracks for the TR750 racers, which had engines developed from the GT750 road bike.

They were torque monsters (peak power was 115 - 120bhp but at just 8,500rpm) but they always ran the heavyweight crank at circuits like Daytona. In testing, the team found the bikes with lightened cranks wouldn't pull up the banking off the infield unless the rider abused the clutch, which would have killed the clutch well before the end of the race.

The Yam TZ700s had a similar weak clutch problem at the time, which is why Kenny Roberts and others retired from the 1975 Daytona 200 that Gene Romero won. Romero nursed his bike a little in the first half of the race to take care of the clutch while others retired or crashed out. He died last week, RIP Gene, a proper hard-man racer of the old school.
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