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Race Prep Miata race-only chat. 949 Racing - Rim & tires

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Old 10-05-2016, 10:27 PM   #21
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But wait, if you call in the next 15 minutes we will double the offer and include another version of the trunk lid and a splitter delete for SPM days!
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Old 10-05-2016, 10:33 PM   #22
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2 fronts
3 tails
4 roofs
5 speeds
6... uh...
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Old 10-05-2016, 10:42 PM   #23
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Speeds are are actually 6, but the diff is almost 5 (4.77)!
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Old 10-08-2016, 12:23 AM   #24
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What is the point of having such a loud exhaust system and only 140whp? Isn't the car just for fun?

I don't mean to be disrespectful, but imo a car shouldn't be loud unless its fast. EWG dump in your face for example.
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Old 10-08-2016, 02:00 AM   #25
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Quote:
Originally Posted by thumpetto007 View Post
What is the point of having such a loud exhaust system and only 140whp? Isn't the car just for fun?

I don't mean to be disrespectful, but imo a car shouldn't be loud unless its fast. EWG dump in your face for example.

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Old 10-08-2016, 02:18 AM   #26
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unless 140whp is in a shifter cart, I don't consider that fast. The car was just obnoxious. With all the fabrication prowess, how hard would adding a proper muffler be? but I'm probably just jealous he could drive a car at mmrls.
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Old 10-08-2016, 02:27 AM   #27
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Originally Posted by thumpetto007 View Post
...but I'm probably just jealous he could drive a car at mmrls.
Now we're getting somewhere.
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Old 10-08-2016, 04:11 AM   #28
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there's fast and then there's fast
two completely different things
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Old 10-09-2016, 12:05 AM   #29
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How did the GT-1000 feel? I'm planning on ordering one once my engine swap is done. What was your AOA?
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Old 10-09-2016, 07:11 PM   #30
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The grip levels with that swan neck GT-1000 are simply unreal.
I ran it at 20 degrees at MRLS because, well, that's the angle we bolted it the first time at the shop and didn't bother touching it throughout the event...
At BRP I backed it down to 10 degrees to get the car to wiggle, which worked better for suspension setup purposes.

Friday afternoon rolled around and it dawned on me that I should run Buttonwillow in the 13CW config before I attempt to run it at Super Lap Battle to get some suspension tuning done.
I am also very rusty from not driving in the last couple of years.
Quick check on the calendar and I found out that the only weekend I can actually run 13CW is this weekend with SpeedVentures.
Not a great setup for a test and tune, especially since it was the S2K challenge and Sat was pretty much booked full (couldn't do Sunday)..




First three sessions were a total **** show, with the 1st and 2nd having cut by a full course Black flag and everyone and their mom running off track and then the 3rd session had a big crash on the second lap and got Red flagged.
I was ready to call the day a complete waste of time because I couldn't even find a groove to know if my suspension adjustments were working or not... Turns out that not driving for 2 years really took a toll on my driving, I was sloppy and slower than geology around places I should fly through.
It also didn't help that the tires I ran were heat cycled out two years ago and apparently storing them for 2 years didn't make them any grippier

Big Hoosiers were big, but had the grip levels of charcoal -




Took the passenger seat out before the last session.
This give you a good look at how far back we relocated the driver seat, it's about a 1/4" from the rear bulkhead.
The pedals have been extended by 3.5" and after using them for three days now I think we'll extend them by another 3/4" or so.
The steering wheel has a 2" spacer on it that seems to work well for my driving position.
The one thing that I haven't done yet is bend the shifter backwards which I really need to, as it is I barely get to 5th gear and with that 4.77 diff I play with 4-5-6 all the time so it's rather uncomfortable.. we'll get it done before the next outing.




Finally in the 4th session things clicked together a bit better and it seemed like everyone in the Red group calmed down after they've seen a big crash.
Traffic flow became more reasonable and I was able to click a bunch of laps in a row, finally get a feel for the car, finally get *some* feel for the track.
My absolutely horrific lap times from the morning started looking more along the lines of just regular slow lap times so there was some progress made :lol: ...
Managed a 2:04 flat with a one very costly mistake that was worth ~2 secs.. Predictive showed all bunch of 2:01.5-2:02 laps that I kept throwing away or hitting traffic in, and seeing that this was on ice skating tires (easily 3 secs slower than anything worth mentioning) I'm going to call this a reasonable start for the tuning and rust removal process.

....Aaand Buttonwillow claimed the first casualty on Morpheus.
The dark Blue stripe on the passenger side of the front bumper is no longer with us, please keep the stripe in your thoughts and prayers.




#wewillrebuild #standtogetherwithMorpheus #bluestripesmatter #makesmorpheusstripedagain #RIPstripe
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Old 10-09-2016, 07:38 PM   #31
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Are you using 1/4 foam core on your front splitter? Im going to build a mould for a NA front spiltter to offset the GT-1000 wing, a total of 3 ducts 2 for the brakes and another to cool the trans tunnel. Since my flat floor doesn't move much air, the front splitter ducts will cool that and create downforce.
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Old 10-09-2016, 08:23 PM   #32
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We're nowhere near done with both the aero and ducting.
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Old 10-10-2016, 10:59 PM   #33
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i believe at this time the splitter is just plywood with carbon overlay correct?
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Old 10-11-2016, 12:35 AM   #34
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The splitter on the car is Baltic Birch, Aluminum and CF.
The new one that I'm working on is Nomex honeycomb core CF with Jabroc skid plates.
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Old 10-11-2016, 02:16 PM   #35
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When I started designing Morpheus I wanted to deal with one of the things that bugged me about Creampuff, which was the fact that the flow on the top surface of the car had to deal with a lot of elevation changes.

One of the advantages that Morpheus has over Creampuff is that raising the front hoop to normal height allows for much smoother top fairings.
And with said I took the long route and mapped the height of each point in the fairings that are / will be covering the opening of the tub, all in 3D for the smoothest bodywork possible.
Not an easy thing to do since the front and rear bodywork all curve in 3 dimensions and so the fairings have to account for the curvature.

Here's a glimpse of what's coming -



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Old 10-11-2016, 02:17 PM   #36
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Now if only they would let you run without all those silly tubes coming up out of it.
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Old 10-11-2016, 04:03 PM   #37
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Silly tubes are nice to have in case someone decides to "let you by quicker" as you're catching up to him in the fastest section of Buttonwillow while doing ~115ish.
Let's also say that the speed differential is 15+ MPH and the suspension is heavily loaded as you're going through the kink and the last thing you want is the dude in front of you is hitting the brakes on the line to "help you pass"...
This is all in theory, not a chance it happened on Saturday, session 4 of the Red run group.
.
.
.
.
.
.
.
Oh wait -


Yeah, WTF.
William had a guy doing this in front of him in the same spot a few years ago and in effort to avoid hitting the guy ended up flying off track sideways, a very high risk of roll over.

Silly tubes are fine.
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Old 10-11-2016, 04:27 PM   #38
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I agree, tubes are fine.

Have you considered, would you consider, making them more aerodynamic with some sort of shaping?
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Old 10-11-2016, 04:29 PM   #39
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That's a part of the plan, I've done it on Creampuff.
Note the Lexan fairings behind the rear legs of the cage, the main hoop also has an aero fairing but you can't see it from this angle -



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Old 10-11-2016, 04:45 PM   #40
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I've looked at dozens of pictures of your car and never noticed that. Very cool. Frantically Googled and saw it better in these two.


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