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| ID | Project | Category | View Status | Date Submitted | Last Update | ||||
| 0000171 | Firmware | Decoders | public | 2011-06-16 16:12 | 2012-09-03 16:45 | ||||
| Reporter | Fred | ||||||||
| Assigned To | Fred | ||||||||
| Priority | normal | Severity | minor | Reproducibility | have not tried | ||||
| Status | closed | Resolution | fixed | ||||||
| Platform | OS | OS Version | |||||||
| Product Version | 0.2.0-SNAPSHOT | ||||||||
| Target Version | 0.2.0 | Fixed in Version | 0.2.0 | ||||||
| Summary | 0000171: Optimise and fine tune 4and1 CAS angles | ||||||||
| Description | That code was written when we had 1.0 degree scheduling and calcs. We now have 0.02 degree scheduling and calcs and it can be fine tuned to provide accurate scheduling. There are notes in the code about what is wrong and what to improve. A lathe or other spinning device is necessary for testing this as compression effect and/or friction variations and/or valve spring compression will produce bad results if a real engine is used. | ||||||||
| Tags | No tags attached. | ||||||||
| FirmwareVersion | |||||||||
| Issue Type | Improvement | ||||||||
| Risk of Breakage | very low | ||||||||
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Notes |
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 (0000286)Fred (administrator) 2011-09-24 19:57 |
Logic is inverted and code is functional again. This step must wait until I have a soldering iron and drill or similar. |
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(0001372) Fred (administrator) 2012-04-01 20:45 |
I now have a soldering iron, a drill, and a working CAS unit. I may try to tackle this at some point. |
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(0001992) Fred (administrator) 2012-09-03 13:55 |
A picture of the disk in question, partly obscured: http://i240.photobucket.com/albums/ff150/inspector72/car%20stuff/FE3distributor.jpg [^] |
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(0001993) Fred (administrator) 2012-09-03 14:29 |
((17.0885833 / 27.8986667 ) * 180) 110.254193402009 69.7458065979906 ((17.1125833 / 27.93575 ) * 180) 110.262477076864 69.7375229231361 ((17.1613333 / 28.0056667 ) * 180) 110.300534070128 69.699465929872 180 - ((17.1335 / 27.97175) * 180) 110.255168160734 69.7448318392664 Inner angle: ((21.762 / 111.8634167 ) * 720) 140.069385168351 ((21.7486667 / 111.8353333 ) * 720) 140.018718252436 ((21.7145833 / 111.9624167) * 720) 139.640608311378 ((21.8273333 / 112.0089167) * 720) 140.30740086606 Rolling with 69.74 and 140.00 for next test. |
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(0001997) Fred (administrator) 2012-09-03 15:46 |
6 - 7 = 2.26925 7 - 8 = 10.9546667 ~= 69.74 8 - 9 = 8.6346667 21.8585833 outer ~= 140 (2.26925 / 21.8585833) * 140 = 14.5341075237936 (10.9546667 / 21.8585833) * 140 = 70.1625222893562 (8.6346667 / 21.8585833) * 140 = 55.3033708273308 OR (2.26925 / 10.9546667) * 69.74 = 14.4465823866645 (21.8585833 / 10.9546667) * 69.74 = 139.156912856326 (8.6346667 / 10.9546667) * 69.74 = 54.9703311062855 540 - 14.5 = 525.5 AND again 2.2885833 11.0455 8.6976667 22.03175 (2.2885833 / 22.03175) * 140 = 14.5427241140627 (11.0455 / 22.03175) * 140 = 70.1882510467848 (8.6976667 / 22.03175) * 140 = 55.2690248391526 OR (2.2885833 / 11.0455) * 69.74 = 14.4498482949617 (22.03175 / 11.0455) * 69.74 = 139.105902403694 (8.6976667 / 11.0455) * 69.74 = 54.9160541087321 525.5 again. |
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(0002000) Fred (administrator) 2012-09-03 16:36 |
New angles available in hash c29b8ae, clean up/optimisation coming in a different issue. |
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(0002001) Fred (administrator) 2012-09-03 16:45 |
Logic was swapped in hash 2e3fc21e54c218e17e09bc711d938e885016d45b and now-wrong comments removed in hash 21ec22119887325400334b6840d18a7c81a2d615, just FYI. |
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