skinnylew
Club Retro Rides Member
Posts: 5,634
Club RR Member Number: 11
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Aug 31, 2018 18:51:56 GMT
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Just fantastic, absolutely deserved the reaction it got. Just thinking aloud the wheel nuts are flat seated by the looks of it, could the wheels be run reverse for dish and wider stance? Just a thought. Lower profile tyres, wider stance kind of like a Lotus 7 on steroids......Louts 7
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Aug 31, 2018 20:06:07 GMT
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distributors are done! both on 13d centrifugal ,and 15 degrees static timing ,and vacuum advance working . had the MEDUSA MTB( medusa thirsty bee-atch)runnig for a long time in the cave , now the advance is right the vacuum signal to the mixers is higher , so i could wind in the taps a lot , then went for a drive this evening on my ritual pilgrimage to the stn lol. well , its definitely a lot lot faster ,now the timing is right , pulls like a beast . i worked out, with all the static running and so on , on the way to the stn it got around 5 mpg , so its getting a bit better . had her up to 66 ish on the way back in the dusk , it was fun ,the lights are good . brakes are so much better with the higher vacuum from the timing too. one test i did was to tie some old thermocouples onto 4 headers ,cos i only have 4 sensors, and plug them into a logger to see if it would show interesting data .. came up with this .. those are the external temperature traces of 4 pipes on the 4.0 litre . 2 of the traces were from 10 inch long probes ,and you can see what happened halfway through when i pulled them into a different position so just the tips were on the pipes ...much higher readings . the upshot of this is that it looks like a valid way to compare cylinders if i can get 6 thermocouples all the same . geektastic ! regards robert.
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Aug 31, 2018 22:10:27 GMT
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you will get there. It can only get better. Thats the disadvantage of having a double engined car: there is always enough power to let the car move. Congrats with the award, its well deserved. The car looks very good, its well balanced dimension wise which is not easy to do with exsisting scrap yard parts. Interesting results with the thermo couples. Keep up the good work. I enjoy the reading and the development.
Petrer
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Sept 1, 2018 20:11:04 GMT
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you will get there. It can only get better. Thats the disadvantage of having a double engined car: there is always enough power to let the car move. Congrats with the award, its well deserved. The car looks very good, its well balanced dimension wise which is not easy to do with exsisting scrap yard parts. Interesting results with the thermo couples. Keep up the good work. I enjoy the reading and the development. Petrer Very true Petrer,even running on a few missing cylinders it still had 300 lbs ft , now i have the timing where i want it , its pulling really hard , even with a few cylinders down and popping . Thank you for the positive comments , its a bit rough compared to your immaculate work , but its brilliant fun to drive , every trip feels like a flight in a Lancaster . regards robert.
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Last Edit: Sept 1, 2018 20:11:34 GMT by ivanhoew
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Sept 10, 2018 15:22:16 GMT
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Sept 10, 2018 17:04:20 GMT
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I want one of them big toys!
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Sept 10, 2018 18:08:29 GMT
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Sept 10, 2018 18:34:14 GMT
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Sept 10, 2018 19:53:46 GMT
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I love all the techie stuff, its just a shame I don't understand it all, but keep it coming!
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Sept 11, 2018 10:16:21 GMT
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impressive testing there and like Mark, i would like some of that testing stuff too. I am not a specialist in tuning but would believe that an engine would not run at all using that much fuel. I tend to believe that setting up an LPG fed engine with trumpets is very difficult and the vaporiser is very sensitive to pressure. Maybe when the car is running on the road, the wind along the trumpets is causing that LPG is sucked from the trumpets into the open air. Do you have a ring styled LPG mixer in the inlet? I quess setting up the engine would have been mucj easier with petrol
Keep up the good work. You will find some horses every day and maybe its better that not all HP is there. It could be undriveable when all the HP is there.
Peter
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mk2cossie
Club Retro Rides Member
Posts: 3,038
Club RR Member Number: 77
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Sept 11, 2018 12:33:03 GMT
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very nice lunch time viewing with the diagnosis video loving the oscilloscope and old skool leak down tester as well! Although my only complaint is damn you ivanhoew, for whistling "winter wonderland" whilst we aren't out of summertime yet
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Sept 11, 2018 15:40:33 GMT
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impressive testing there and like Mark, i would like some of that testing stuff too. I am not a specialist in tuning but would believe that an engine would not run at all using that much fuel. I tend to believe that setting up an LPG fed engine with trumpets is very difficult and the vaporiser is very sensitive to pressure. Maybe when the car is running on the road, the wind along the trumpets is causing that LPG is sucked from the trumpets into the open air. Do you have a ring styled LPG mixer in the inlet? I quess setting up the engine would have been mucj easier with petrol Keep up the good work. You will find some horses every day and maybe its better that not all HP is there. It could be undriveable when all the HP is there. Peter all very good points Peter ,my theory is that while some cylinders are struggling along at say, 10:1 afr , others are not firing at all , so neat lpg is pouring out of the exhausts , v said she can definately smell it from 50m away in a following car with the windows closed ! We theorised about various scenarios , my favourite was driving past a bloke at the bus stop with a lit cigarette.... lighting me up ,and me disappearing off down the rd at warp factor 9.8 with two blue cones of fire stretching 50ft back from the tailpipes , me going whooooooPPPPPPPPPPPPP,and watching my bike speedo ! it is true that lpg is a case of fine adjustment , one 8th turn on the flow valve can make a big difference ,i was going to use unf on the adjusting screws i put in the inlet stubs valves to give fine adjustment . re the wind effect .. i think this is very true , on some installations simply moving the air filter to the front of the car will cause leaning out to the point of stalling on the overrun ,with my situation i need to drive it with some wool taped along the bonnet and bellmouths, to see where and how the wind is affecting it all , i do accept that a perfect mix for all 12 cylinders is not likely , but even if i get it running from 13 to 16 :1 afr on all cylinders , all that i would lose would be a chunk of power i can afford to lose . you can feed a signal to the vapourisers balance ports to obviate the ram air effect somewhat. i estimate at the moment i am at around 400/lbs ft at 2500 , up a 100 from the dyno runs .the car only weighs around 980 kg... Re undriveable , something i did when designing the pedal ratios was to give the throttle quite a long movement , so you can cruise along on a little throttle ,but have to push it down quite a long way to open her up ...you definately know when you do though ! regards robert
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Sept 11, 2018 15:42:26 GMT
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very nice lunch time viewing with the diagnosis video loving the oscilloscope and old skool leak down tester as well! Although my only complaint is damn you ivanhoew, for whistling "winter wonderland" whilst we aren't out of summertime yet V tells me its a robert characteristic to whistle christmas tunes when i am happy . when i am miserable its Wagner !
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Sept 12, 2018 1:14:05 GMT
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Bit of a trip to the stn n stuff..
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Sept 12, 2018 2:18:50 GMT
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Most excellent video. We really need a few drive-by moments as well.....
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Sept 12, 2018 15:27:42 GMT
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Most excellent video. We really need a few drive-by moments as well..... YOUR right ! i must arrange something .
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Sept 12, 2018 22:46:32 GMT
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I hope you have your big handlebar moustache fitted when you go out
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Sept 12, 2018 22:56:12 GMT
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Sounds great loud on headphones.
=)
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Sept 13, 2018 13:23:51 GMT
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Here, that doesn't look like flat cap and moustache driving at all! Looks like you've got a ding in the bonnet? Or is that a feature.. haven't noticed it before.
Also looks like a lot more vibration coming from that front engine compared to the rear with the bonnet off.
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Sept 13, 2018 16:02:04 GMT
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Yes there is something odd about that front 3.6 , i suspect it may have been put together with the cam timing wrong hence the low compression.
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