Hi all,

Calspan upper management has approved our test program. We're getting a price break in the neighborhood of 33-50%. The top 7 tires will be tested at Tire 1. I expect a signed contract by the end of the week.

We need 10" wheels for the tests. If you have an unused set we need to talk, ASAP. Cal Poly Pomona, what bolt pattern and offset are your 10s?

Testing will take place 7/18-7/20 at Calspan in Buffalo, NY. There's always a chance the test will be set back due to mechanical problems at TIRF, but 7/18 is now a firm date.

Contact me if you want to attend the test. There's not a whole lot of space in the control room, but we can accomodate a certain number of visitors. Now that we have a set date and the project is approved you can start planning a visit if you're interested.

Edward

We have some 4x100 10x7(i think) unknown offset wheels. they are the old spun keiser wheels which are pretty flexable. If anyone else has something stiffer I would recommend not using our super soft wheels. However if it comes down to it let us know.

I've updated the registered teams page again:
http://students.washington.edu/dennyt/fsae/tiretesting/TTC_Reg.htm

We've decided to take into account the votes of all teams who have sent us money thus far. We're coming to a final decision this week on the test structure. It looks like we'll get a lot of data on a lot of tires, but I can't say more than that until we finalize the test plan.

Thanks to everyone for joining, and thanks to Edward Kasprzak, Dr. Bob Woods, and Doug Milliken for helping to organize and administer this project!

I can't wait to update my simulations with better data...

Any chance of getting the new Goodyear 20x7x13 on the list? It is a new tire, there was a certain school that placed 3rd with these......

Dr. Woods is going to ask when he calls them up to get tires for the test. When I called last week to ask for the set we won in endurance, Adam Tubbs said they don't have any of the new 7's, but in a couple months they will (after the testing...).

That's all I know about it. I suppose if any teams had a fresh set or two laying around, we could figure out how to get them tested.

Does anyone know if Goodyear plans to keep producing the 6.5 along with the 7.0 (13" rim) next year?

quote:

Originally posted by Denny Trimble:
Does anyone object to substitution of the 7.0 for the 6.5 in our testing?

I'd suggest another option might be substituting the new 7.0 for the 20x8.0, if the 7 is available for testing. There's a few reasons - the 8" has fewer votes, far fewer teams run them and a few teams have tested with them and found better options. Also, the 6.5 v 7.0 data could be very interesting, given that it seems the top 7 tires will get tier-1 testing. Even though we've run 8" Goodyears in the past, we'd do our voting a little differently given another chance...

Do participating teams receive some sort of receipt once the fee is paid?

We are very interested in the tests, however our college requires us to justify expenses with a receipt.

At the bottom of the TTC site under the section about finances and registration is a link to a quote:
http://www.millikenresearch.com/FSAE_TTC_Quote.pdf

This with a bank statement/money order recipt should be enough... at least it was for Drexel.

For most schools, the spreadsheet listing FSAE TTC finances on the web has been sufficient. For schools which have required a receipt or invoice, we have been providing one. When you register, send us an e-mail indicating you require a receipt. We'll get one to you once funds arrive.

Edward

Just out of interest, which tyre models are going to have the data fitted to them? I would guess MRA ND tyre and Pacjeka MF-2005 for ADAMS.

Ben

Ben,

You asked about tire models that will be fit to the data. MRA has stated they will be providing a model of the data in their MRA Nondimensional Tire Model. We are currently in discussion with a second possible model provider...sorry, can't say more than that right now.

The really nice part is that registered teams will get the model AND the raw data. You'll be able to see how well different models fit (and in what regimes their strengths and weaknesses are).

Edward

It's good to hear that the raw data will be sent out with the model fits. Pacejka has some aspects that are often simply inappropriate for certain characteristics that you see in the raw data.

Ben

(Fitting Calspan data today...)

GOOD NEWS!!!

We now have a signed contract with Calspan. They came through with a significant price break as had been discussed. We will be testing 7-8 constructions (eight if time permits), all at Tier 1. The online finances spreadsheet and website will be updated in a day or two.

Testing will take place July 27-29. A DVD with raw data, test video, and at least one model of the data will be distributed to registered teams approximately one week after the test concludes. I will be in touch with all registered teams to arrange for delivery.

Thanks again to everyone who's on-board! If you're not on-board and want to join-in, information and registration instructions can be found at:

http://www.millikenresearch.com/fsaettc.html

Edward

Hi all,

Things are looking good for the FSAE TTC tire tests at Calspan late this week. We'll be testing Wednesday, Thursday and Friday. Registered teams can expect data in one-two weeks afterward.

Edward

So I stopped by calspan after work to check out what was going on. Pretty impressive machine. Met Josh from UIUC. Nice guy. Traded funny stories with Doug Millikan. Watched hoosier and goodyear tires getting 450lb load placed on them. Looked like a fat person sat on a donut. Was funny watching the tires nearly getting ripped off the rims when cambered/steered. The tires after running had melted rubber on them that had the consistancy of really warm duct tape glue that doesnt come off your hands. Also reminded them to weigh the tires as they forgot so that will be provided in the data. Did some quick weighing of my own since we all disagree on what weighs what. This is unoffical because i did it real quick but:

hoosier:

18x6-10 : 8.8lbs
20x6-13: 9.7lbs

goodyear:

20x6-13: 10.5lbs
20x7-13(the really new compound): 10.7lbs

I am pretty sure that is what edward and I read off the scales. Calspan is no joke.

Since you gave the weight of the new goodyear compound, does that imply that it is being tested also?

The "new" goodyear is the 20x7-13 R065 (same compound as the "old" 6.5's), or so I'm told.

So, it's a new construction, not a new compound.

I havent been following this whole post so pardon me if I'm repeating a question. Can a team pay the $500 for the data later on?

Bryan Hise
UMD

I'm glad you remembered to weigh the tires Rob. Your weights seem about inline with what I remember. But did you weigh several tires or just one (maybe you only had one?). Asking because we've seen pretty big variances and it'd be nice to have an average. Also, was it before or after the test.

Yes, teams can join at any point and receive the data. So, if you follow the registration and payment instructions on the official website:
http://www.millikenresearch.com/fsaettc.html

Then you'll get data, and we'll have money to test more tires or look at different parameters next time.