Engineering is awesome: Doing Lat G vs Tire vs Camber test for credit, need help.

[iamsam]

I am jealous, Chris. Because of your insane driving skills, you now get to race around HPR for free.

[Bimmerman325i]

Bumpdate.

We have chosen March 6th for experiments, with March 12th being backup day #1 if weather is bad. We've chosen to measure max lateral G per corner per lap per camber/compression setting combination. It's going to be wicked fun.

Who wants to come out? The testing will be priority 1, but we need a minimum of 10 drivers to ensure the day actually happens (HPR's rule). Cost is $100/day in winter.....

[monkeytaco]

Bumpdate.

We have chosen March 6th for experiments, with March 12th being backup day #1 if weather is bad. We've chosen to measure max lateral G per corner per lap per camber/compression setting combination. It's going to be wicked fun.

Who wants to come out? The testing will be priority 1, but we need a minimum of 10 drivers to ensure the day actually happens (HPR's rule). Cost is $100/day in winter.....

Can I drive my honda van?

[Roland H]

will it pass tech?

[blefevre]

I will be there and put around with the Ti or E30 if one of the cars is ready. I need to find a helmet too. I dont think hpr has rentals. If there are 10 people then I might just watch too.

[Bimmerman325i]

And again, another update: tire width vs compression, on brand new sets of 245 and 255/40/17 star specs. Two tire widths vs three compression settings at 5ish laps per combo. It's going to be a wicked day.

Still on for March 6th!

[blefevre]

I highly doubt I can drive that day, but I will probably be there!

[Brew]

Sounds like a cool project.
You're going to have to readjust your front toe after changing the camber though, keep that in mind.

[Bimmerman325i]

So I apparently can't tell February from March on a calendar. March 6th is a Motorcycle day, March 5th and 13th are winter pricing Car days. Unsure which day our group is going to the track, probably the 13th.

Sorry all.

Sounds like a cool project.
You're going to have to readjust your front toe after changing the camber though, keep that in mind.

Thanks! We're no longer doing camber vs tire vs lat G though-- we're doing compression vs tire width vs lat G.

[fsmtnbiker]

Compression won't make much difference in overall grip.. Actually it will probably be within the noise of the data acquired. Tire width may make a big enough difference to measure... But you need tires that are either all new or identically heat cycled and worn to have a useable data set.

[Bimmerman325i]

Compression won't make much difference in overall grip.. Actually it will probably be within the noise of the data acquired. Tire width may make a big enough difference to measure... But you need tires that are either all new or identically heat cycled and worn to have a useable data set.

That's our thought as well. We have a new set of 255 and 245 star specs though, neither of which have seen any road miles yet.

[blefevre]

Doesn't the expeirment need to be a 3-factor problem? Or do you only have to do two?

[Bimmerman325i]

Doesn't the expeirment need to be a 3-factor problem? Or do you only have to do two?

Two factor. Our response variable is the peak lateral G per lap, and our factors are compression setting (soft/mid/hard) and tire width (245/255)

[Bimmerman325i]

Chris, any chance you would be able to drive my car march 13th or 19th?

[blefevre]

Two factor. Our response variable is the peak lateral G per lap, and our factors are compression setting (soft/mid/hard) and tire width (245/255)

Man we had to do three factors with three levels each. This is still a sweet way to do senior lab!