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First outing on new suspension setup

 
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clay
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1972 Chevrolet Nova

PostPosted: Sun Sep 16, 2012 9:50 pm    Post subject: First outing on new suspension setup Reply with quote

Went to the track Friday to test the new spings, shocks and different Caltrac setup Money Maker Racing recommended. I'll have to say I'm very happy at this point. 60' hasn't come around yet but it shows a lot of promise. It finally gets the front end up some instead of one little hop. Car goes very straight and is easier than ever to drive. I sent him this video and he recommended a shock adjustment and a little more tire pressure and turn up the power. I tried to turn up the power some Friday but I've go to figure out the boost controller some more. Clay


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af2
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1933 Willys Coupe

PostPosted: Sun Sep 16, 2012 11:07 pm    Post subject: Reply with quote

It is still unloading. The double bounce...

Still, it looks good!!!
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10sec.et
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1969 Oldsmobile Cutlass

PostPosted: Mon Sep 17, 2012 2:00 am    Post subject: Reply with quote

af2 wrote:
It is still unloading. The double bounce...

Still, it looks good!!!


Clay, what shocks and springs do you have on the front. looks like you could slow it down a bit on the rise.

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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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Paul P
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1971 Chevrolet Chevelle

PostPosted: Mon Sep 17, 2012 2:14 pm    Post subject: Reply with quote

af2 wrote:
It is still unloading. The double bounce...

Still, it looks good!!!


Ditto Looks to be good otherwise. I fought the bounce ended up with 80/20 in front to stop that bounce. Up once and down for the trip.

http://www.youtube.com/watch?v=Wni2FnpUwVg&

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William Jones
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1971 Ford Mustang

PostPosted: Mon Sep 17, 2012 6:40 pm    Post subject: Reply with quote

Looking pretty good to me could slow the front down a little did the boost drop when it came off the brake because it didn't look like the tires unloaded but more like the car dropped some power when the converter locked up which caused the frontend to come down quickly and started all the bouncing.

Bam

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clay
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1972 Chevrolet Nova

PostPosted: Mon Sep 17, 2012 8:56 pm    Post subject: Reply with quote

I'm thinking along the lines William is. The front shocks are non adjustable Calvert 90/10's. Looking at the logs from that run something is up with boost building on the brake. I bumped it up on that pass from the previous pass but the data didn't show it actually happening. It tried - it briefly went to around 12.5 or so then it dropped back to around 10.5. I'm going to try and get a screen shot of the data and post it. I had bumped the 2 step up to 4600 to try and give it more exhaust heat to work with. Might have to go higher on the limiter. Something is up that is doesn't seem to be making quite the power is was a while back. DA was around 900 ft. which isn't bad. I do usually try to run when it gets below sea level. I sent the video to Moneymaker racing and they think loosen the rear shocks a click or two, go up a pound or two on tire pressure and step up the power. I was thinking about a tire pressure increase because of the tire shake/tremble I'm feeling. I'm thinking something is up with me relocating some water injection nozzles too - I've got a few things to look at. Thanks for the comments! Clay
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clay
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1972 Chevrolet Nova

PostPosted: Mon Sep 17, 2012 9:19 pm    Post subject: Reply with quote

Here are some screenshots of the data. This first one shows the spike in boost during spool up. The black vertical line is where the values in the chart below are shown. The vertical blue line is the transbrake input.


This is where the boost drops off even though I'm still on the floor and rpm's are still constant. It's almost like once the rev limiter really hits it kills exhaust heat and the turbo's slow down. I'll have to think on this one a bit to figure out what to do.



Boost during the run is around 17 lbs. Pretty consistent other than a spike at every shift.


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William Jones
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PostPosted: Mon Sep 17, 2012 9:44 pm    Post subject: Reply with quote

Thats what I heard in the video once the tires came down it sounded like the boost ramped back up kinda of like it sounds when sombody hits it with a small shot of nitrous after they roll out. You can actually hear your engine really start to accelerate after the front end comes down and I think thats what helps pick the wheels up that second time.

Bam

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Take the horse out off the barn and let her RUN BABY RUN!!!!!

92 LX 454ci Clevor 9.24@142.53 N/A
71 Mach1 454ci Clevor 10.16@134 N/A 3850lbs race weight "Lost in fire"
03 Cobra Bone stock 12.42
68 Falcon 363ci 10.55@126 N/A
95 GT 363ci 11.08@118 N/A
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Paul P
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1971 Chevrolet Chevelle

PostPosted: Mon Sep 17, 2012 9:59 pm    Post subject: Reply with quote

Maybe you need a little shot of Nitrous to maintain boost levels for the first 60 ft until the car settled down. I have heard that this is a good way to keep the turbo spooled off the line only. That would help alleviate the loading and unloading keeping the boost more constant during launch.
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2001 Focus 2.0 Zetec
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1971 - Chevelle 408 SBC N.A.
6.95@98.6 MPH 1/8mi
10.97@121 MPH 1/4mi
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10sec.et
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PostPosted: Tue Sep 18, 2012 12:28 am    Post subject: Reply with quote

ok Clay, how did you get your screen shots to come out "normal" and be able to post them up like that ? i know to hit the "print screen" button and open it up in paint (or other photo editing software) but mine come out huge Confused .
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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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Paul P
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Joined: 15 Aug 2002
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Location: Townsend, Mass.
81240.86 points


1971 Chevrolet Chevelle

PostPosted: Tue Sep 18, 2012 1:58 pm    Post subject: Reply with quote

Not to highjack the post but alt+prt sc and then past into word. Then resize it in word. Once you are done copy it out of word and paste in paint.
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2001 Focus 2.0 Zetec
15.63@87 MPH 1/4mi
1971 - Chevelle 408 SBC N.A.
6.95@98.6 MPH 1/8mi
10.97@121 MPH 1/4mi
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af2
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1933 Willys Coupe

PostPosted: Tue Sep 18, 2012 4:52 pm    Post subject: Reply with quote

Paul P wrote:
Not to highjack the post but alt+prt sc and then past into word. Then resize it in word. Once you are done copy it out of word and paste in paint.



Last time I hit all those buttons I lost 2 years worth of invoices!!! paranoid retard
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clay
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1972 Chevrolet Nova

PostPosted: Sun Nov 04, 2012 9:33 pm    Post subject: Reply with quote

Just a quick update. Tried the spool up without the two step and it does make power now! It was neat how linear the stall speed seems. At 10 lbs it was 5000, 11 - 5250 or so, 12 - 5500. We spent the night actually working on getting back in control of the power and a few tire pressure adjustemts. Things look very promising but nothing to really show on video. I think we're getting close. Clay
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squeeezer
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PostPosted: Sun Nov 04, 2012 9:51 pm    Post subject: Reply with quote

Well...........sounds waaaaaaaaayyy better than a " thermal event
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