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E/PRACT2
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_15.ADF |
| Filename: | E/PRACT2 |
| Read OK: | ✔ |
| File size: | 065B bytes |
| Load address: | 32204556 |
| Exec address: | 6B636944 |
File contents
Dear Gus, Your practical ideas section is a great idea. With all the concern about the effect of pollutants on the environment most motorists have been switching to unleaded petrol. I drive an old car which is fine except it can not take unleaded. A few years ago I noticed that it began to overheat a lot and on several times after stopping it would not start again. I also noticed a smell of petrol. The garage serviced the car and could find nothing badly wrong but the problem persisted. They suggested a new cylinder head so that I could use unleaded petrol at a cost of #300. One day while driving out in the country it stopped dead and one of those eccentric locals offered to help. He diagnosed the problem as fuel. He said that four star petrol on sale now has a much lower octain rating than four star on sale in the seveties when my car was built. This has the effect of causing my engine to run too hot, burning oil, burning out my plugs and the heat makes the petrol in the float chamber vapourise causing the smell. All very polluting. Here-tuned the engine retarding the ignition and advised me to get a petrol flow regulator. This is like one of those gas pressure regulators but is fitted onto the petrol feed pipe between the pump and the carb'. I got it through the post from a shop in Brighton called Formula 1. It cost about #12. Their 'phone number is 0273 551379 The problem has now all but disappeared. Jim Dicks THANKS JIM. I MIGHT USE THIS ON MY CAR. I HAVEN'T HAD AS MANY PROBLEMS AS YOU HAD BUT I DO GET A LOT OF PINKING AND OVERHEAING.
00000000 44 65 61 72 20 47 75 73 2c 0d 0d 59 6f 75 72 20 |Dear Gus,..Your | 00000010 70 72 61 63 74 69 63 61 6c 20 69 64 65 61 73 20 |practical ideas | 00000020 73 65 63 74 69 6f 6e 20 69 73 20 61 20 67 72 65 |section is a gre| 00000030 61 74 20 69 64 65 61 2e 20 0d 0d 57 69 74 68 20 |at idea. ..With | 00000040 10 61 6c 6c 20 10 74 68 65 20 10 63 6f 6e 63 65 |.all .the .conce| 00000050 72 6e 20 61 62 6f 75 74 20 74 68 65 20 65 66 66 |rn about the eff| 00000060 65 63 74 20 6f 66 20 70 6f 6c 6c 75 74 61 6e 74 |ect of pollutant| 00000070 73 20 6f 6e 20 74 68 65 20 65 6e 76 69 72 6f 6e |s on the environ| 00000080 6d 65 6e 74 20 0d 6d 6f 73 74 20 6d 6f 74 6f 72 |ment .most motor| 00000090 69 73 74 73 20 68 61 76 65 20 62 65 65 6e 20 73 |ists have been s| 000000a0 77 69 74 63 68 69 6e 67 20 74 6f 20 75 6e 6c 65 |witching to unle| 000000b0 61 64 65 64 20 70 65 74 72 6f 6c 2e 20 49 20 64 |aded petrol. I d| 000000c0 72 69 76 65 20 61 6e 20 6f 6c 64 20 63 61 72 20 |rive an old car | 000000d0 0d 77 68 69 63 68 20 10 69 73 20 66 69 6e 65 20 |.which .is fine | 000000e0 65 78 63 65 70 74 20 69 74 20 63 61 6e 20 6e 6f |except it can no| 000000f0 74 20 74 61 6b 65 20 75 6e 6c 65 61 64 65 64 2e |t take unleaded.| 00000100 20 41 20 66 65 77 20 79 65 61 72 73 20 61 67 6f | A few years ago| 00000110 20 49 20 6e 6f 74 69 63 65 64 20 0d 74 68 61 74 | I noticed .that| 00000120 20 10 69 74 20 10 62 65 67 61 6e 20 10 74 6f 20 | .it .began .to | 00000130 6f 76 65 72 68 65 61 74 20 61 20 6c 6f 74 20 61 |overheat a lot a| 00000140 6e 64 20 6f 6e 20 73 65 76 65 72 61 6c 20 74 69 |nd on several ti| 00000150 6d 65 73 20 61 66 74 65 72 20 73 74 6f 70 70 69 |mes after stoppi| 00000160 6e 67 20 69 74 20 0d 77 6f 75 6c 64 20 6e 6f 74 |ng it .would not| 00000170 20 73 74 61 72 74 20 61 67 61 69 6e 2e 20 49 20 | start again. I | 00000180 61 6c 73 6f 20 6e 6f 74 69 63 65 64 20 61 20 73 |also noticed a s| 00000190 6d 65 6c 6c 20 6f 66 20 70 65 74 72 6f 6c 2e 0d |mell of petrol..| 000001a0 0d 54 68 65 20 10 67 61 72 61 67 65 20 10 73 65 |.The .garage .se| 000001b0 72 76 69 63 65 64 20 10 74 68 65 20 63 61 72 20 |rviced .the car | 000001c0 61 6e 64 20 63 6f 75 6c 64 20 66 69 6e 64 20 6e |and could find n| 000001d0 6f 74 68 69 6e 67 20 62 61 64 6c 79 20 77 72 6f |othing badly wro| 000001e0 6e 67 20 62 75 74 20 74 68 65 20 0d 70 72 6f 62 |ng but the .prob| 000001f0 6c 65 6d 20 70 65 72 73 69 73 74 65 64 2e 20 54 |lem persisted. T| 00000200 68 65 79 20 73 75 67 67 65 73 74 65 64 20 61 20 |hey suggested a | 00000210 6e 65 77 20 63 79 6c 69 6e 64 65 72 20 68 65 61 |new cylinder hea| 00000220 64 20 73 6f 20 74 68 61 74 20 49 20 63 6f 75 6c |d so that I coul| 00000230 64 20 75 73 65 20 0d 75 6e 6c 65 61 64 65 64 20 |d use .unleaded | 00000240 70 65 74 72 6f 6c 20 61 74 20 61 20 63 6f 73 74 |petrol at a cost| 00000250 20 6f 66 20 23 33 30 30 2e 0d 0d 4f 6e 65 20 64 | of #300...One d| 00000260 61 79 20 77 68 69 6c 65 20 64 72 69 76 69 6e 67 |ay while driving| 00000270 20 6f 75 74 20 69 6e 20 74 68 65 20 63 6f 75 6e | out in the coun| 00000280 74 72 79 20 69 74 20 73 74 6f 70 70 65 64 20 64 |try it stopped d| 00000290 65 61 64 20 61 6e 64 20 6f 6e 65 20 6f 66 20 74 |ead and one of t| 000002a0 68 6f 73 65 20 0d 65 63 63 65 6e 74 72 69 63 20 |hose .eccentric | 000002b0 10 6c 6f 63 61 6c 73 20 10 6f 66 66 65 72 65 64 |.locals .offered| 000002c0 20 10 74 6f 20 68 65 6c 70 2e 20 48 65 20 64 69 | .to help. He di| 000002d0 61 67 6e 6f 73 65 64 20 74 68 65 20 70 72 6f 62 |agnosed the prob| 000002e0 6c 65 6d 20 61 73 20 66 75 65 6c 2e 20 48 65 20 |lem as fuel. He | 000002f0 0d 73 61 69 64 20 10 74 68 61 74 20 10 66 6f 75 |.said .that .fou| 00000300 72 20 10 73 74 61 72 20 10 70 65 74 72 6f 6c 20 |r .star .petrol | 00000310 6f 6e 20 73 61 6c 65 20 6e 6f 77 20 68 61 73 20 |on sale now has | 00000320 61 20 6d 75 63 68 20 6c 6f 77 65 72 20 6f 63 74 |a much lower oct| 00000330 61 69 6e 20 72 61 74 69 6e 67 20 0d 74 68 61 6e |ain rating .than| 00000340 20 10 66 6f 75 72 20 10 73 74 61 72 20 10 6f 6e | .four .star .on| 00000350 20 73 61 6c 65 20 69 6e 20 74 68 65 20 73 65 76 | sale in the sev| 00000360 65 74 69 65 73 20 77 68 65 6e 20 6d 79 20 63 61 |eties when my ca| 00000370 72 20 77 61 73 20 62 75 69 6c 74 2e 20 54 68 69 |r was built. Thi| 00000380 73 20 68 61 73 20 0d 74 68 65 20 10 65 66 66 65 |s has .the .effe| 00000390 63 74 20 6f 66 20 63 61 75 73 69 6e 67 20 6d 79 |ct of causing my| 000003a0 20 65 6e 67 69 6e 65 20 74 6f 20 72 75 6e 20 74 | engine to run t| 000003b0 6f 6f 20 68 6f 74 2c 20 62 75 72 6e 69 6e 67 20 |oo hot, burning | 000003c0 6f 69 6c 2c 20 62 75 72 6e 69 6e 67 20 6f 75 74 |oil, burning out| 000003d0 20 0d 6d 79 20 10 70 6c 75 67 73 20 10 61 6e 64 | .my .plugs .and| 000003e0 20 10 74 68 65 20 10 68 65 61 74 20 6d 61 6b 65 | .the .heat make| 000003f0 73 20 74 68 65 20 70 65 74 72 6f 6c 20 69 6e 20 |s the petrol in | 00000400 74 68 65 20 66 6c 6f 61 74 20 63 68 61 6d 62 65 |the float chambe| 00000410 72 20 76 61 70 6f 75 72 69 73 65 20 0d 63 61 75 |r vapourise .cau| 00000420 73 69 6e 67 20 74 68 65 20 73 6d 65 6c 6c 2e 20 |sing the smell. | 00000430 41 6c 6c 20 76 65 72 79 20 70 6f 6c 6c 75 74 69 |All very polluti| 00000440 6e 67 2e 0d 0d 48 65 10 72 65 2d 74 75 6e 65 64 |ng...He.re-tuned| 00000450 20 10 74 68 65 20 10 65 6e 67 69 6e 65 20 10 72 | .the .engine .r| 00000460 65 74 61 72 64 69 6e 67 20 10 74 68 65 20 69 67 |etarding .the ig| 00000470 6e 69 74 69 6f 6e 20 61 6e 64 20 61 64 76 69 73 |nition and advis| 00000480 65 64 20 6d 65 20 74 6f 20 67 65 74 20 61 20 0d |ed me to get a .| 00000490 70 65 74 72 6f 6c 20 10 66 6c 6f 77 20 72 65 67 |petrol .flow reg| 000004a0 75 6c 61 74 6f 72 2e 20 54 68 69 73 20 69 73 20 |ulator. This is | 000004b0 6c 69 6b 65 20 6f 6e 65 20 6f 66 20 74 68 6f 73 |like one of thos| 000004c0 65 20 67 61 73 20 70 72 65 73 73 75 72 65 20 72 |e gas pressure r| 000004d0 65 67 75 6c 61 74 6f 72 73 20 20 0d 62 75 74 20 |egulators .but | 000004e0 69 73 20 66 69 74 74 65 64 20 6f 6e 74 6f 20 74 |is fitted onto t| 000004f0 68 65 20 70 65 74 72 6f 6c 20 66 65 65 64 20 70 |he petrol feed p| 00000500 69 70 65 20 62 65 74 77 65 65 6e 20 74 68 65 20 |ipe between the | 00000510 70 75 6d 70 20 61 6e 64 20 74 68 65 20 63 61 72 |pump and the car| 00000520 62 27 2e 0d 0d 49 20 10 67 6f 74 20 10 69 74 20 |b'...I .got .it | 00000530 10 74 68 72 6f 75 67 68 20 74 68 65 20 70 6f 73 |.through the pos| 00000540 74 20 66 72 6f 6d 20 61 20 73 68 6f 70 20 69 6e |t from a shop in| 00000550 20 42 72 69 67 68 74 6f 6e 20 63 61 6c 6c 65 64 | Brighton called| 00000560 20 46 6f 72 6d 75 6c 61 20 31 2e 20 49 74 20 0d | Formula 1. It .| 00000570 63 6f 73 74 20 61 62 6f 75 74 20 23 31 32 2e 20 |cost about #12. | 00000580 54 68 65 69 72 20 27 70 68 6f 6e 65 20 6e 75 6d |Their 'phone num| 00000590 62 65 72 20 69 73 20 30 32 37 33 20 35 35 31 33 |ber is 0273 5513| 000005a0 37 39 0d 0d 54 68 65 20 70 72 6f 62 6c 65 6d 20 |79..The problem | 000005b0 68 61 73 20 6e 6f 77 20 61 6c 6c 20 62 75 74 20 |has now all but | 000005c0 64 69 73 61 70 70 65 61 72 65 64 2e 20 0d 0d 4a |disappeared. ..J| 000005d0 69 6d 20 44 69 63 6b 73 0d 0d 54 48 41 4e 4b 53 |im Dicks..THANKS| 000005e0 20 4a 49 4d 2e 20 49 20 4d 49 47 48 54 20 55 53 | JIM. I MIGHT US| 000005f0 45 20 54 48 49 53 20 4f 4e 20 4d 59 20 43 41 52 |E THIS ON MY CAR| 00000600 2e 20 49 20 48 41 56 45 4e 27 54 20 48 41 44 20 |. I HAVEN'T HAD | 00000610 41 53 20 4d 41 4e 59 20 50 52 4f 42 4c 45 4d 53 |AS MANY PROBLEMS| 00000620 20 41 53 20 0d 59 4f 55 20 48 41 44 20 42 55 54 | AS .YOU HAD BUT| 00000630 20 49 20 44 4f 20 47 45 54 20 41 20 4c 4f 54 20 | I DO GET A LOT | 00000640 4f 46 20 50 49 4e 4b 49 4e 47 20 41 4e 44 20 4f |OF PINKING AND O| 00000650 56 45 52 48 45 41 49 4e 47 2e 0d |VERHEAING..| 0000065b
E/PRACT2.m0
E/PRACT2.m1
E/PRACT2.m2
E/PRACT2.m4
E/PRACT2.m5
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