One mile and two mile runs

[DEMO MAN]

I went back to Kennedy Space Center and ran my 2010 Viper down the space shuttle runway again on Sept 23rd. Got there early and did a few 1/2 mile shakedown runs with the other cars there that included a Saleen S7, Lamborghini Aventador, Murcielago, a heavily modified Mercedes, a Ford GT, and others. Half mile runs went quick and we moved back from the timing lights to do the mile runs. I ran a quick NA trip down the mile, can't really remember the exact speed but somewhere close to 178/9 or so. My best 1 mile trip in the previous event was 181+ MPH. Next runs I decided to try some nitrous so we sprayed a small shot toward the very end of a few runs and managed a 189.9 MPH. This was the fastest run in the mile of the cars that were there that day. I think it had a little more in it but it was my first experience with nitrous and I was being overly conservative and cautious. After we finished up the mile runs we backed up further and were basically at the end of the runway launching just a few feet away from where the grass starts. This is approx. 2.3 miles from the timing lights now. I had done some 2 miles runs in Feb that were all NA and my best was 200.472 MPH. I again did some NA runs and broke 200+ fairly easily even with passengers which included my wife, " come on babe, get in and I will do a conservative run ". Now in my defense I felt it was conservative since we only did 200.4 MPH. After that I tried some nitrous runs, turning it on for last 10 seconds or less of the runs, it made zero difference in speeds. The car was pretty much maxed out in RPMs and gears so there was no more speed to be had. My best run was 200.588 and calculating the transmission gears ( 5th ), the differential gear ( 3.21 ) and the 355/30/19 rear tires the max speed that the car is theoretically capable of is 201.4 MPH so I feel I got all it had considering there was a crosswind, it was raining in the mid section of the runway and we missed a bird by inches on one run. I was 3rd fastest of the 2+ mile runs behind a 207 from the Aventador and 205 from the Ford GT. We were the only cars over 200 that day. Now I'm planning a third trip back on Dec 16th to hopefully break 200 in the mile. My plan is to go back to 3.07 differential gears, maybe do some aero work on the nose and see if that's enough to get it there. Then hopefully it will maybe break 205-210 in the 2+ mile runs. I will post some pictures and videos when I get a chance.

[ViperPete]

Man i bet you had a blast. Id love to do it with mine.

[DEMO MAN]

Man i bet you had a blast. Id love to do it with mine.

Can you come in Dec, it's on the 16th? On top of the speed just being on the Space Shuttle Runway is amazing.

[boldtx]

Nice runs I bet you had a blast did you get any video? Having run at Mojave doing 1.5 mile having almost another mile would be amazing. Sadly I am a 23 hour drive from Kennedy

[DEMO MAN]

Nice runs I bet you had a blast did you get any video? Having run at Mojave doing 1.5 mile having almost another mile would be amazing. Sadly I am a 23 hour drive from Kennedy

I did get some video of 2 of the launches off the line. I had trouble with the GoPro in the car so doesn't look like I will have any of the entire runs. I will work on getting them posted by early next week. Here are a few pictures from the event, I will have a lot more pics once the thumb drive arrives from the photographer arrives. He may have even shot some video also. When I go back in Dec I will bring someone with me that's capable of handling the video, GoPros, etc. Here is a picture of my wife and I about to do a 200.4 MPH conservative run.
KSC Shuttle Runway Sept 23 2017 200.4 MPH Run.jpg

[ViperPete]

Can you come in Dec, it's on the 16th? On top of the speed just being on the Space Shuttle Runway is amazing.

Don't know if i'll be able to afford it. A lot going on... especially with this new project i'm working on

[DEMO MAN]

Don't know if i'll be able to afford it. A lot going on... especially with this new project i'm working on

You can always buy a ticket as an observer and do a ride along, should be able to get you close to 210 MPH. Although u might be like me and not enjoy the lack of control that comes along with sitting in that right seat.

[boldtx]

I did get some video of 2 of the launches off the line. I had trouble with the GoPro in the car so doesn't look like I will have any of the entire runs. I will work on getting them posted by early next week. Here are a few pictures from the event, I will have a lot more pics once the thumb drive arrives from the photographer arrives. He may have even shot some video also. When I go back in Dec I will bring someone with me that's capable of handling the video, GoPros, etc. Here is a picture of my wife and I about to do a 200.4 MPH conservative run.
KSC Shuttle Runway Sept 23 2017 200.4 MPH Run.jpg

Thats a great pic its nice to see when a couple or family can enjoy stuff like that together. My 14 year old nephew who loves cars lives close to Mojave, he was able to get a 187mph ride along with me and my sister went 190mph. The smiles on their faces was the best.

[boldtx]

Just out of curiosity how much is this event? The smaller Mojave one I did ran 2,500 but was limited to 25 cars and only for 1 day. But with that little amount of cars you could hot lap the heck out of the car.

[DEMO MAN]

Just out of curiosity how much is this event? The smaller Mojave one I did ran 2,500 but was limited to 25 cars and only for 1 day. But with that little amount of cars you could hot lap the heck out of the car.

It's 1850.00 if 20 cars come, and 20 cars is max. It gives u pretty much all the runs u would want to do. There is always a few of the super exotics that have issues. We lost 3 cars fairly quickly to issues with engines. If u want to run let me know and I will get u full details. 2.3 miles on the space shuttle runway is something u can't do anywhere else.

[boldtx]

It's 1850.00 if 20 cars come, and 20 cars is max. It gives u pretty much all the runs u would want to do. There is always a few of the super exotics that have issues. We lost 3 cars fairly quickly to issues with engines. If u want to run let me know and I will get u full details. 2.3 miles on the space shuttle runway is something u can't do anywhere else.

If you would not mind giving me the info that would be great. boldtx@aol.com
I wont make it this year but maybe next. I hit 213mph in the 1.5 mile at Mojave I would love to get closer to 225mph in that 2.3 distance with my vette. After some aero changes this winter and a taller rear tire. I also might take the Viper it all depends on what mods I get done this winter. At that distance I would assume with all the bolt-ons I would eclipse 200mph.

Thanks again

[DEMO MAN]

If you would not mind giving me the info that would be great. boldtx@aol.com
I wont make it this year but maybe next. I hit 213mph in the 1.5 mile at Mojave I would love to get closer to 225mph in that 2.3 distance with my vette. After some aero changes this winter and a taller rear tire. I also might take the Viper it all depends on what mods I get done this winter. At that distance I would assume with all the bolt-ons I would eclipse 200mph.

Thanks again

You can google Johnny Boymer Proving Grounds and get details on the various events he has planned. I will be at the Dec 16th one and hoping for 200 in the mile and maybe 210 in the 2+ mile runs. I'm doing some gearing changes to hopefully make that happen. I miscalculated 5th gear on the last runs which kept my speeds lower than I expected. I blame it on the hurricane, way too busy at work, too little sleep and doing all the prep work at the last minute. I have some time now to get this one right.

[Viper.954]

Thanks for the post. I've always wondered if I should shift to 6th gear for max speed. It sounds like the answer is no.

[DEMO MAN]

Thanks for the post. I've always wondered if I should shift to 6th gear for max speed. It sounds like the answer is no.

What I have seen with my 3.21 differential gears and my transmission gives me the approx. max speeds of 70 MPH in 1st, 102 MPH in 2nd, 135 MPH in 3rd, 161 MPH in 4th and 201 MPH on 5th. 6th gear is really useless as I don't have enough motor to push it with the .5 ratio. Even with the better .63 6th gear ratio you still would need a lot more motor than stock to keep pushing the car in the 2.3 mile runs. From my experience 4th is the perfect gear to max out in any 1/2 mile run, and 5th works perfect for the mile plus runs. I'm going back on Dec 16th to run again, I will go back to stock 3.07 differential for these runs. I want to break 200+ in the mile and really hoping for something in the 205-210 MPH in the 2+ mile runs. Last time I ran 189.9 MPH in the mile and my 2+ mile runs were consistently 200.4 to 200.588 over and over no matter what I did. The gear change and bolting on more of my kids inheritance should get me to my goals I hope. I will have a guy there to handle the video on the Dec 16th runs and hope to post some great videos of the runs after that.

[DEMO MAN]

KSC Shuttle Runway Sept 23 2017 pic 1.jpg
KSC Shuttle Runway Sept 23 2017 pic 2.jpg

Here's some pictures from the Sept 23rd event.

[DEMO MAN]

KSC Shuttle Runway Sept 23 2017 pic 3.jpg
KSC Shuttle Runway Sept 23 2017 pic 4.jpg

Here's a Saleen S7 that was at the event

[DEMO MAN]

KSC Shuttle Runway Sept 23 2017 pic 5.jpg
KSC Shuttle Runway Sept 23 2017 pic 6.jpg
KSC Shuttle Runway Sept 23 2017 pic 7.jpg
A few more of the exotics that ran that day.

[ViperPete]

Man those are some amazing pictures. Your car looks insane David. I love the painted hard top.

[DEMO MAN]

https://www.youtube.com/watch?v=RHy4vOlc_EQ

This is one of the first launches I did, was a little too much throttle off the line and I got the launch down pretty quick. I think this was my 200.588 MPH run.

[Fatboy 18]

Does removing the wing mirrors make a big difference?

[DEMO MAN]

Does removing the wing mirrors make a big difference?

It does make a difference, Viper mirrors aren't very aerodynamic, just think what sticking your hand into the airstream at 200+ MPH would feel like, so every little bit helps. I also remove the wipers, tape the seams with helicopter tape and wax the car with a hydrophobic wax. I can't tell you the difference for just one of the items alone but the combination of the above results in a 3+ MPH gain. I would guess the benefits only come after a 1/2 mile but I am not 100% sure on that.

[ViperPete]

Need a blower bud.

[DEMO MAN]

Need a blower bud.

Yea I do but I want a roots blower and no one makes one.

[Fatboy 18]

It does make a difference, Viper mirrors aren't very aerodynamic, just think what sticking your hand into the airstream at 200+ MPH would feel like, so every little bit helps. I also remove the wipers, tape the seams with helicopter tape and wax the car with a hydrophobic wax. I can't tell you the difference for just one of the items alone but the combination of the above results in a 3+ MPH gain. I would guess the benefits only come after a 1/2 mile but I am not 100% sure on that.

Thanks for the reply

[DEMO MAN]

Thanks for the reply

I want to thank u for entertaining me on a regular basis with your joke of the day. It's the first thread I check when I come to this site.