Hiboost

iTrader: (9)

Just in case not everyone here wanders into the Evo X areas of the website:

https://www.evolutionm.net/forums/ev...p-america.html

I'll keep the above thread updated with details as they come forth!

JeffDOZ

We've run 5 One Laps, In a BMW twice, then my old Impreza 2.5 RS, then my evo 5 (1999), then a 996 Turbo. Always had fun.

You know your on the One Lap when you see a sign that says 200 miles to your destination, and your happy with that!

Hiboost

iTrader: (9)

Wow you are a veteran then! I may pick your brain on some pointers and things to avoid. It helps that my friends went last year but since we are in the same class they aren't necessarily going to give away ALL the secrets!

It's going to be a ton of mileage but I already drove to Florida and back so I know how to survive long trips reasonably well. If anyone has any previous experience feel free to chime in. I'm going to have a ton of prep work to do even if the car is mostly ready to go right now. There always seems to be a few things that crop up out of the blue or changes that you want to make in the 11th hour which I'm trying to avoid at all costs.

JeffDOZ

Always happy to help. And guide, although nothing prepares you for doing the one lap, but it keeps dragging you back. The greatest things Ive ever seen in my life happened on the One Lap: A plane landing on the highway and taxiing into the service station behind us at 2am in NM somewhere.

A 3-car police escort for ten of us running through OK - at 120mph to the exit for a hotel just up from the track.

A hang over that lasted two days after the event - we won class and got 2nd overall that year. One of my best friend Mark Davia has since gone on to win it 5 times in the same car - but with 300lbs less weight and 200 more HP, wider body etc. HE's done well, but he wont be back for a while.

I did enjoy running his 996 turbo on the clay oval that year, getting 2nd overal time.

Seeing the regulars is always good, Roy Hopkins, Yates Jnr, etc. The mad guys from Europe.

Im happy to help if I have anything worth sharing for you.

JeffDOZ

Remember, I think your go from being a LAP PUPPY, to a LAP DAWG on the third year.

Hiboost

iTrader: (9)

I've also done some updating on the website recently in addition to the VR4 and Evo X logos being updated.

Updated details on car setup and specs:

http://onelap.rochesterdsm.org/therides/


Updated driver profiles, namely Sean Caron and myself:

http://onelap.rochesterdsm.org/about/




Updated event map that includes links to all track websites, track maps, and a sample video of Evo's running all the tracks!

http://onelap.rochesterdsm.org/the-event/




Stephen is working on finalizing the sponsor pdf but any vendors that wish to consider sponsoring us in some form are more than welcome to contact us before that is completed. With the event 12 weeks away we are going full bore even if most people are still in winter hibernation mode.

Hiboost

iTrader: (9)

I finally found the formula for calculating Lateral G's and located a site for a decent 100' diameter skidpad, now it's just a matter of the snow melting! If I can do 6 laps consistantly and then measure total time with a stopwatch, the error should be minimized enough to get a consistant reading and a feel for how the car is handling.

Lateral G-Force = (1.22) * (Radius) / (Lap time * Lap time)

With a 100' Diameter skidpad (50' Radius) these are a sample of the times I would be looking at:

.90g = 8.23 sec * 6 = 49.38 sec
.95g = 8.01 sec * 6 = 48.06 sec
1.00g = 7.81 sec * 6 = 46.86 sec
1.05g = 7.62 sec * 6 = 45.72 sec
1.10g = 7.45 sec * 6 = 44.70 sec

Going with a 200' Diameter skidpad (100' Radius) like the Tirerack has would be more accurate but then we are talking higher speeds and a larger site that is harder to measure out.

I'm likely going to test the BC Racing Coilovers with the 10k/10k combo as well as the 10k/12k combo with different rear bar settigns and various tire pressures. This will be on the current Pirelli P-zero Nero and then just before I install the AD08's I'll test and compare.

Hiboost

iTrader: (9)

Darkside Engineering is now an official sponsor of the Evo X for this years 2010 One Lap of America event!

Many thanks to Logan for working with us for this years event, I'm sure the car will react well to the suspension improvements. You can read all the details for what is in store for the suspension at our main site!

http://onelap.rochesterdsm.org/

spdracerut

iTrader: (2)

One lap has been a dream of mine!!!! I'm very envious of your endevour. Best of luck!

As for calculating G force.... centripetal acceleration (Gs) = velocity^2 / radius.

Calculate your velocity in ft/second. So velocity squared = ft^2/s^2. That divided by your radius in ft gives you your acceleration in ft/s^2. 1 G = 32.2 ft/s^2 IIRC. Or just do everything metric where 1 G = 9.81 m/s^2. Working in metric is so much easier

Hiboost

iTrader: (9)

I managed to get some more seat time on the BC Racing ER series Coilovers today while it was 60*F outside, powering out of some favorite turns I was getting that sick slight oversteer feel that the car wanted to go faster and turn harder all while being very stable... what a rush, I can't wait to get this car on the track now especially since this is only on the 10k/10k springs and just a baseline 10 out of 30 for Compression and Rebound settings at all four corners!

You can read more about it here at:

http://onelap.rochesterdsm.org/

More news to follow after our corner weighting session this Saturday and I'll likely get some Dyno numbers for the latest round of engine changes.

goofygrin

iTrader: (5)

Hallett: Bring brake pads. All the braking zones are downhill.

There's one corner that they are calling "Evo corner." Its not much of a corner but is a slight bend over a right by the "2" on your map. It seems that Evos without wings like to take flight and end up off the track there.

Fun track though

Hiboost

iTrader: (9)

Ah thanks for the tips! In fact anyone that has tips for the tracks we are hitting, we can use all the help se can get to avoid falling victim to the trouble spots.

I plan on having a fresh set of rotors that were properly bedded in with new Raybestos ST43 pads, although I heard there are some ST45 and ST47 compounds now available but not sure of their differences. Either way with good 3" brake ducts on the car we should be able to haul this beast down from speed at the traction limits of the tires.

Here are the Raybestos comparisons:

Raybestoshas been making brake pads for over 100 years. They have proventhemselves as a top brake pad manufacturer for both street and racingbrake pads. Their street pads have been readily available for years,and now so are their race pads.

Raybestos ST38
"B" slightly lower mu than ST-42. Wear still not as good as ST41. Goodperformance over broad temperature range with minimal rotor wear.Successful in a broad range of racing series. Use in dirt where youwant less bite than ST-41/ST-43.

Raybestos ST41
"A" the best high energy input racing material available. Extremelysuccessful in all the top three NASCAR series Raced by the 2002 NASCARChampion Tony Stewart. Maintains high mu level at extremely hightemperatures without sacrificing good wear - both pad and rotor. Needssome heat to work well.

Raybestos ST42
"J" lower mu than ST-41 and ST-43. Extremely stable average and in stopoutput over a wide temperature range. Has been very successful whenused on the rear brakes in conjunction with the ST41 on the front. Besthigh-temperature wear of all their materials.

Raybestos ST43
Friction level and wear rate between ST-41 and ST-42. Stability is notquite as good as 42 but better than 41. Excellent open wheel formula.

Raybestos ST44
High friction material, slightly less aggressive than ST-41

Raybestos ST45
Lower friction level than the ST-47. Could be used as a great rear to compliment the ST-47 compound.

Raybestos ST47
Has the highest friction and torque available to date. It has been engineered for long-lasting extreme heat situations and maximum rotor life. If you are looking for the most advanced-performing road race brake pad, that will simply out perform all the rest, this is it.

Hiboost

iTrader: (9)

So we had some corner weighting madess at Street Tuned Motorsports on Saturday and got the car a bit better balanced. You can read more about the numbers we got here:

Onelap.RochesterDSM.org

A big thanks goes out to Emery for offering use of his scales to get the car closer to being dialed in for the event. I'll have the car's Toe aligned to zero and start mapping out what settings work best depending on road conditions. I don't know about other parts of the country but this winter has left the local streets in shambles!

drewgray

iTrader: (2)

That would be "the *****". It's a blind crest with a slight turn after into a hard braking zone. Fastest way through is as you are coming up the hill into it look for a billboard in the distance, point the car that direction and keep the gas pinned til you are through then hard on the brakes.

Hiboost

iTrader: (9)

In preperation for the mix of street driving between all the road courses and then actually going all out on the tracks, the Evo X hit the dyno to make sure all was healthy. Read more about it here:

http://onelap.rochesterdsm.org/2010/...mivec-madness/