Re: 60 ft frustration is driving me nuts
[Re: A727Tflite]
#2792177
07/03/20 06:47 AM
07/03/20 06:47 AM
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Joined: Mar 2006
Posts: 9,791 MI, usa
dvw
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the past couple of weeks i've been working on the car. Reconfigured the alternator to 16 volt, new alternator wiring, modified the battery tray for the XM battery. Pulled all 4 shocks. The RF Afco was leaking and the compression adjuster doesn't change dampening so its getting repaired. The rear Konis have one shock that is much stiffer in compression than the other at the same setting. Its getting checked as well. took the sticking front calipers apart and rebuilt them. New front tires. Built a data recorder with Inovate LC 2, SSI 4 and a pocket logger. Also added an accelerometer to measure Gs. It has to be removable as NMCA doesn't allow it in N/SS. @ connectors, O2 sensor and Mil spec screw on connector. Velcro holds it to the bracket. Carb swap is still coming. Have new barrel of C-14. Testing soon. Doug
Last edited by dvw; 07/03/20 06:50 AM.
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Re: 60 ft frustration is driving me nuts
[Re: dvw]
#2792184
07/03/20 07:31 AM
07/03/20 07:31 AM
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Joined: Nov 2011
Posts: 284 PA
Harry's Taxi 2
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What accelerometer did you use?
'86 Maple Grove KOS Mopar low qualifier......true street legal with no power adders.
NOS-used when losing since 1940.
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Re: 60 ft frustration is driving me nuts
[Re: Harry's Taxi 2]
#2792185
07/03/20 07:38 AM
07/03/20 07:38 AM
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Joined: Jan 2003
Posts: 8,005 Tulsa OK
Bad340fish
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Tulsa OK
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What accelerometer did you use? I was just about to ask as well. They is some really cheap ones out there if you have some kind of logging device to wire them into it. I keep wanting to add one to my EFI for logging but I haven't yet.
68 Barracuda Formula S 340 87 "Chrysler" Conquest
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Re: 60 ft frustration is driving me nuts
[Re: dvw]
#2792190
07/03/20 08:06 AM
07/03/20 08:06 AM
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Joined: Jan 2003
Posts: 8,005 Tulsa OK
Bad340fish
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Tulsa OK
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Thanks that is one I have had on the list. if I have another 5V input I will add one of these soon. I have a different Cherry Hall sensor than that but they have been rock solid. I run them for my Crank Sensor, Driveshaft sensor, and front wheel speed sensor.
68 Barracuda Formula S 340 87 "Chrysler" Conquest
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Re: 60 ft frustration is driving me nuts
[Re: dvw]
#2794179
07/08/20 07:14 AM
07/08/20 07:14 AM
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Joined: Nov 2011
Posts: 284 PA
Harry's Taxi 2
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Joined: Nov 2011
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the past couple of weeks i've been working on the car. Reconfigured the alternator to 16 volt, new alternator wiring, modified the battery tray for the XM battery. Pulled all 4 shocks. The RF Afco was leaking and the compression adjuster doesn't change dampening so its getting repaired. The rear Konis have one shock that is much stiffer in compression than the other at the same setting. Its getting checked as well. took the sticking front calipers apart and rebuilt them. New front tires. Built a data recorder with Inovate LC 2, SSI 4 and a pocket logger. Also added an accelerometer to measure Gs. It has to be removable as NMCA doesn't allow it in N/SS. @ connectors, O2 sensor and Mil spec screw on connector. Velcro holds it to the bracket. Carb swap is still coming. Have new barrel of C-14. Testing soon. Doug What's the need for a resistor(if that's what that is) between input and output voltage? I'm going to add the same accelerometer to my LM2 (thanks for the idea by the way) and the wiring diagram doesn't show a resistor.
'86 Maple Grove KOS Mopar low qualifier......true street legal with no power adders.
NOS-used when losing since 1940.
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Re: 60 ft frustration is driving me nuts
[Re: Harry's Taxi 2]
#2794598
07/09/20 06:35 AM
07/09/20 06:35 AM
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Joined: Mar 2006
Posts: 9,791 MI, usa
dvw
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A pull up resistor is speced with the accellerometer. The give you the spec based on your input voltage 1K for 5 volt, 2.4K for 12 volt etc. Doug
Last edited by dvw; 07/09/20 06:36 AM.
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Re: 60 ft frustration is driving me nuts
[Re: dvw]
#2794647
07/09/20 10:16 AM
07/09/20 10:16 AM
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Joined: Nov 2011
Posts: 284 PA
Harry's Taxi 2
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A pull up resistor is speced with the accellerometer. The give you the spec based on your input voltage 1K for 5 volt, 2.4K for 12 volt etc. Doug Thank you....I missed that when I ordered one.
'86 Maple Grove KOS Mopar low qualifier......true street legal with no power adders.
NOS-used when losing since 1940.
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Re: 60 ft frustration is driving me nuts
[Re: Harry's Taxi 2]
#2798189
07/18/20 08:11 AM
07/18/20 08:11 AM
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Joined: Mar 2006
Posts: 9,791 MI, usa
dvw
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Further updates. Had the Willwood Calipers apart twice. Measured the rotors, bores the pistons. Polished everything with 1000 grit. They still don't retract as I would like but are better. XS 16v Battery is installed. The regulator swap in the alternator works great. Front shocks are repaired and installed. Decided to upgrade the 20 year old rear Koni shocks to Afco big guns. They should be here by Tuesday. Data logger records A/F, RPM, and G's. Down loads correctly. How ever we're having an issue with the driveshaft speed sensor reading. Found a slight intake leak on #2/4. So that's fixed as well. Fixed a minor trans leak at the park cable housing. Hope to test this week. Doug
Last edited by dvw; 07/18/20 08:12 AM.
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Re: 60 ft frustration is driving me nuts
[Re: rickraw]
#2798310
07/18/20 01:24 PM
07/18/20 01:24 PM
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Joined: Mar 2006
Posts: 9,791 MI, usa
dvw
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Re: 60 ft frustration is driving me nuts
[Re: dvw]
#2798537
07/19/20 09:51 AM
07/19/20 09:51 AM
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Joined: Sep 2003
Posts: 421 montana
BANDIT
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Yeah, Wilwood customer service people don’t seem to be on top of call or email follow up. I assumed they were still out or low staffed cause of the COVID thing. Maybe.... I know you said you had changed tires, and not knowing much about your car, I’m kinda shooting in the dark, but. How heavy is car, have you experimented with tire pressures to see if maybe you can get more wheel speed out of the hole? First 2 weekends out with my dragster this year, same set up as I ended last year with, my reaction times and 60 foots were all over the place. Put new tires on, still slow on 60 ft, so dropped pressure by 1/2 lb total and Sunday, I had no worse than a .015 reaction time, less than .001 difference per lane, and cut a .000 in finals to win. Had same frustration with my Avenger, spent waaay more time and money before finally putting tires on it to solve that. The Avenger is a 4 link and the dragster is a slip-joint, but tire pressure and condition has caused me more frustration and cost more money than I care to admit. Tires every 90 to a 100 passes is gonna be normal any more for me. Jim
Last edited by BANDIT; 07/19/20 10:10 AM.
64 Dodge Coronet 440. In progress 1998. Dodge Avenger. 8.35@165. 4400 DA 250” Neil and Parks Slip Joint. 7.36@183. 4600 DA 242" Mullis Dragster. 6.90@ 200mph
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Re: 60 ft frustration is driving me nuts
[Re: dvw]
#2798550
07/19/20 10:20 AM
07/19/20 10:20 AM
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Joined: Jan 2003
Posts: 8,005 Tulsa OK
Bad340fish
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Posts: 8,005
Tulsa OK
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Further updates. Had the Willwood Calipers apart twice. Measured the rotors, bores the pistons. Polished everything with 1000 grit. They still don't retract as I would like but are better. XS 16v Battery is installed. The regulator swap in the alternator works great. Front shocks are repaired and installed. Decided to upgrade the 20 year old rear Koni shocks to Afco big guns. They should be here by Tuesday. Data logger records A/F, RPM, and G's. Down loads correctly. How ever we're having an issue with the driveshaft speed sensor reading. Found a slight intake leak on #2/4. So that's fixed as well. Fixed a minor trans leak at the park cable housing. Hope to test this week. Doug I assume you have one already but my Cherry hall effect sensor that is on my driveshaft requires a pull-up resistor. Also how many teeth does your reluctor wheel have on it? I have heard issues of some systems not being able to read them if they have to many teeth, should still work at low RPM though if that was the case.
68 Barracuda Formula S 340 87 "Chrysler" Conquest
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