2.25 mile conversion?

[Kevin McAfee]

How do you convert MPH on a 3/4 mile track? Been doing a little searching but thought sombody might know off the top of there head.

[JBM]

After 4 laps it's 3 miles?

[kampenracing]

We run 3 laps in NBRA

[ZUL8TR]

How do you convert MPH on a 3/4 mile track? Been doing a little searching but thought sombody might know off the top of there head.

Measure the time in seconds around the 3/4 mile track then:

Average speed for the 3/4 mile lap = 2700 divided by time in seconds for the 1 lap

If you want average speed for the 3 laps (2.25 miles) measure time for the 3 laps then:

Average speed for the 3 laps (2,25 miles) = 8100 divided by time in seconds for the 3 laps

[Mrs blueskyracer]

One of these will do the trick for you! Click on the link . http://www.calculatoredge.com/civil%...nce%20Time.htm

[Dave M]

Kev, we might have to take our shoes off to calculate this one ! LOL

[rumleyfips]

I liked to see the times from the nationals posted when Mrs. Blue Sky Racer was allowed to see them. I got some of the missing times from the video Jeff Brewster posted on Youtube. Thanks all. What I would like to know now is the length of the Moses Lake course. Someone must have the GPS info. With that I could use all my fingers and toes ( plus the formulae ) to have some fun.

The times are interesting. ASH, AXH down to 200modR were within 9 seconds. Makes you wonder about parity committees and ACH.
CSH, BSH , 350modR, 20ssH, 25ssH,CSR and BSR were within 17 seconds in that order

J's were slow and D's were fast. Quelle surprise. The DSH and 500 mod H were 4 seconds apart.

There were ( negating the J's ) 3 speed ranges where a bunch of classes ran the same. I know it all depends on water , wind and starts, but I don't think things change much from these figures.

Now , if I just knew how long the course was.

[Mrs blueskyracer]

according to the sanction : an approximate 1 mile coursean approx 1 mile - Course Elevation: 1,047 feet

[HydroKyle93R]

According to an onboard GPS device, the closed course at Moses Lake was somewhere near 4850 ft in length.

[Mrs blueskyracer]

To answer the next question before it comes up one mile is 5280 feet!

[Kevin McAfee]

Thanks for all the input, after checking that site I found an app for my phone(imagine that) that I think will work. It's called Speed Distance Calculator if anybody else wants to use it.

[Guest]

How do you convert MPH on a 3/4 mile track? Been doing a little searching but thought sombody might know off the top of there head.

Hi Kevin,
As an old BSR driver I have a few Mercury 20-H conversions that still run well. If you like to use one of the conversion we can bring one to the next race.

Alan

[rumleyfips]

With the help of some of the people here, I have been able to calculate speeds from the nationals.
In the A groups , speeds were from 47.4 to 49.6. Paritity without even trying ?
A mid group , B's & C's ran from 53 to 59.
DSH and 500 modH ran 63.5 and 63.3.
As expected J's were slower ( 42.2 ) and 750modH were quick ( 69.4).
Hopefully, videos of 850, 45, 200, 350modH and JSR will appear.
Can I put my socks back on now?

John

[rumleyfips]

Forgot. The course was .918 miles.