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Author Topic: Getting ready for Bonneville(rebuild)  (Read 605287 times)
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jl222
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« Reply #1875 on: December 05, 2012, 05:06:37 PM »

That is one baaad car, sittin at the two lookin through my camera I was amazed to see it comin so quick! Heard the 294 over the radio and dam near fell over, by far one of the most exciting cars to watch and listen to on the salt.
Worth a trip to the dust bowl in May just to see it go again.
 cheers
Dan

Did you get any video of the runs?

  post from 2010
« Last Edit: December 05, 2012, 05:30:00 PM by jl222 » Logged
jl222
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« Reply #1876 on: December 05, 2012, 05:28:25 PM »

In the first run the data logger didn't get turned on, but we did get our only video.  We may have been going faster in the first run than the second.  In the video(so I've heard not seen yet) it showed that JL222 shut down before the 2 and still got a 1/4 speed of 270.  I need to collect the SD card and post it asap. cheers

   After the 2 but before the 21/4 smiley We did run 5 mph faster on 1st run in the new 2 mile time than on the 280 21/4 and 294 3 mile run.
  It gets a bit confusing with the new 1st mile traveled to 2nd mile time, but I like having that time.

                         JL222

  Correction on 5 mph faster on first run it was 9 mph shocked Found out today after closer look. We tuned it right down rolleyes
 Actually we new it wasn't 100 % as after adjusting the valves [ no stretching this year as lash was bigger not smaller]
we took a compression test and 2 cyl were only at 50 psi but dykes rings must expand and seal up cyl to still run as well as it did.

  These are the times between the 1st mile traveled and 2nd mile traveled     1st run....mile 2     [246.686]  21/4    271.818  shut off right after interring 3rd mile on 1st run.                                                        2nd run    mile2     [237.607]   21/4   280..513
 
 Troy tried posting video from my computer but computer went off line cry 

    JL222

 Past posts in 2010 after 294 run . BNI started posting times for the second mile after the start, this is the mile before the regular 1st -2nd-and 3rd timed mile

  Note... 1st run in new timed mile at 246.686 was 9 mph faster than the 237.607 time on our 294 mph run.

                           JL222

               
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jl222
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« Reply #1877 on: December 05, 2012, 05:43:58 PM »

Ok, here it is..... What a pain this video was to find the correct software to edit it, and all along I ended up using my daughters computer which had the software already built in.  Great Christmas gift from her family to her/me. grin

Anyway, this is our first run and only video cry that I have for this year at Bonneville.  We ran to about the 2 and shut down soon there after, we went 270 in the 1/4, but we were going faster on this run than the following run the next day when we went 294 mph at the 3.  You will see water pour out of a water vent tube for the intercooler in which we did move later and need to modify still.  The GoPro takes a much better video than we have been using.  Hope you enjoy. cheers



   Post from 2010

  This is our best acceleration at Bville, and with the new 2 mile from start time of 246+ wish I had gone to the 21/4.

    JL222

 
« Last Edit: December 05, 2012, 05:50:13 PM by jl222 » Logged
jl222
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« Reply #1878 on: December 05, 2012, 05:57:32 PM »

Just a note about the time that John and Troy are at WOT. At the speeds they are running I doubt that they are at WOT much longer than 60 seconds, even to the 5 mile.

John, what does your data logger tell you?

Rex

  I wish we could run full throttle all the time [working on it] grin
 
 On our 294 mph run 1st gear 6100 rpm 10 sec max throttle 30% ....2nd 7450 rpm whoops 13 sec max tps 44%
 3rd  7100 rpm 12.3 sec max tps 50%... 4th gear 7000 rpm 17 sec tps 100%   Total time on gas 52.3 sec for 3 miles
except for short push off. Top speed 318 mph figuring 1 inch tire growth with no further increase in speed thats 11.32 sec
per mile or 22.64 sec + 52.3= 75 sec for the full 5 miles. full throttle on that run to end would have been about 40sec.

                      JL222


 

 


    1st -6100 --108 mph--10 sec max tps 30%    seconds are time in each gear
    2nd-7450--  200         13 sec       tps 44%
    3rd- 7100---256         12.3 sec     tps 50%  tried full throttle at first of 3rd but got loose [ backed off quick] smiley
    4th- 7000-- 318          17 sec       tps ioo%  280 21/4 time  294 3rd mile average time  [between 2nd and 3rd mile]


                     JL222

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jl222
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« Reply #1879 on: December 05, 2012, 06:07:26 PM »

We definately had a few bad pistons.  This first one isn't too bad, but not usable.



Same one on the inside.



without the rod



This last piston we think is the result of what started to happen to the first piston in the photo.



you can see the top starting to split where the intake valve relief is, on the right.



 Piston problems on our 294 run.

            JL222
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jl222
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« Reply #1880 on: December 05, 2012, 06:22:15 PM »

 
 I though we had a video of the 294 time data log in here someplace but I can't find it.

  While looking for data video I came across these old post.

  The only spike in wheel spin is when I gave it full throttle shifting into 3rd, and I backed off to less than 50% throttle, wheel spin shows up as spike on data recorder.

  The data also shows rpms every tenth of a second most in 50 rpms at a time.

                 JL222


 I
« Last Edit: December 05, 2012, 06:24:43 PM by jl222 » Logged
jl222
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« Reply #1881 on: December 05, 2012, 09:10:28 PM »

The slug made an appearance in the block to check clearances.



Now we just need to pull all of the sleeves and get new ones.  Anyone know of a good sleeve puller?



Here is picture of our controversial tire sizes.  Front runners compaired to our wide rear. grin



  ''No one is going 300 in a sedan without tire spin!!'' More than one Bville racer has told me that.

  No one else uses these tires..But Gale Banks did grin and so do we.

             JL222
« Last Edit: December 05, 2012, 09:55:47 PM by jl222 » Logged
jl222
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« Reply #1882 on: December 05, 2012, 09:51:08 PM »

Every few pages I like to put up videos of our runs so if people want to find them they can locate them a little easier.  These are some of our better videos.

     These are in 2008





                 2009



                 2010





 More from the past

            JL222
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dieselgeek
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« Reply #1883 on: December 06, 2012, 10:20:22 AM »

I think you guys need to knock it off before the name calling starts.  Pissing contests are ok but you guys are getting mad at this point.

Not mad on my end, this is thoroughly entertaining.  Troy should just make this a Blog post so people can't respond.  I'll stop since he's getting all sorts of upset and making slanted comments towards the car that tore up his record by 15mph but telling me all about how he has twice the power, etc.  Whatever dude.

I guess I'll be impressed when I see a 4 mile time from this operation.

Carry on and good luck!
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Frankie7799
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« Reply #1884 on: December 06, 2012, 10:30:56 AM »

DG, its John that your going back and forth with for the most part hence the jl222 moniker. Troy is bvillercr
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« Reply #1885 on: December 06, 2012, 10:32:21 AM »

DG, its John that your going back and forth with for the most part hence the jl222 moniker. Troy is bvillercr

I didn't know the difference.  My bad.  Apologies to Troy.
« Last Edit: December 06, 2012, 10:38:51 AM by dieselgeek » Logged
Tman
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« Reply #1886 on: December 06, 2012, 11:22:22 AM »

DG, its John that your going back and forth with for the most part hence the jl222 moniker. Troy is bvillercr

I didn't know the difference.  



Does it matter?!?!?!?! grin evil
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« Reply #1887 on: December 06, 2012, 11:57:53 AM »

John and Troy,
Looking at your datalog at Bonneville, I did not expect to see this type of carnage. I was thinking that a rod just let go. Timing and afr looked to be in line.
Glad you got it apart and we can stop speculating. Now for the 10,000 question- Why?
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jl222
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« Reply #1888 on: December 06, 2012, 12:22:39 PM »

I think you guys need to knock it off before the name calling starts.  Pissing contests are ok but you guys are getting mad at this point.

Not mad on my end, this is thoroughly entertaining.  Troy should just make this a Blog post so people can't respond.  I'll stop since he's getting all sorts of upset and making slanted comments towards the car that tore up his record by 15mph but telling me all about how he has twice the power, etc.  Whatever dude.

I guess I'll be impressed when I see a 4 mile time from this operation.

Carry on and good luck!

  disselgeek...now you say I'm making slanted remarks about us having twice the power but I guess it's not the same when you say we have half the power we do.

 You brag about tearing up our record by 15 mph [a record set in light rain, spinning through the lights with the chute out] and in the 1st mile. Chute was completely soaked wet on bottom when I picked it up.

  When you say your not inpressed with a 280 mph 21/4 speed and 294 mph time in the 1st mile. it just reinforces my BS- delusional- comments and adding FOOL. [Hi Glen grin]

                    JL222

 
  

  
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« Reply #1889 on: December 06, 2012, 07:33:42 PM »

Just for kicks, an analytical look at the vaunted 294 mph run:

GM F-body, 20.4 sq ft, Cd=.3, W= 4900 lb at 287 mph (average of 280 2-1/4 speed and 294 average over the mile) gives a result of 1118 hp to overcome rolling and aero drag.
Time to go from 2-1/8 location to 2-1/2 at 287 mph = 4.7 seconds.
Acceleration in gaining 14 mph in 4.7 seconds = 0.136 g.
Force required to produce that acceleration on a 4900 lb car = 730.7 lb.
Horsepower needed to produce that thrust at that speed = 559 hp.
Adding drag hp to accelerative hp = 1677 hp being expended
Total thrust being used, 1677 hp at 287 mph, = 2191 lb.
Assuming 55% weight on driven tires, required coefficient of friction = 0.81  !!

In the absence of any aero downforce, car appears to be on the ragged edge of traction available.

Terminal speed under these conditions (zero acceleration, 1677 hp devoted to drag only) = 329 mph
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