68C
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Posts posted by 68C
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Thank you for helping us better understand the FI system.
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Love the leaves on the ground in your photo, autumn cannot be far away.
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Funny, whenever I watch Frasier the roads seem pretty empty!
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I just bought this thing back in late July. It might make some here throw up in your mouth a little but I love it. The thing has about as much torque as my car. With the pipes it sounds like an 80s Porsche Turbo (even has that slight wind and airbox noise) . It even handles being 750lbs. It even has a single sided swing arm though being a cruiser. And no, it will not transform into a robot and kill you...ttp://i668.photobucket.com/albums/vv43/roxyrue1/20180808_165558_zps6q4m39kp.jpg
Are you sure?
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Pray tell, did you "demand" a specific AFR on the 15RC? Or was it MyECU?
I used the MyEcu.
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The goal!
I soon realised how little I really knew about the correct fueling of an engine when playing with the MyEcu and later with Guzzidiag. It was fairly easy to alter the map, and to 'demand' a specific AFR using a closed loop system. The problem of course was what AFR, the stoimetric ideal does not work in the real world, every engine and situation requires its own setting, I was just never clever enough to know what was, a bit like hunting in the woods when you don't know what to shoot at, pigeon, rat or tree.
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Like all extra gauges it means less time looking down the road where you are going and so adds to the usual dangers of riding. AFR gauges take a little time to stabilise after a throttle change so you tend to look at it longer than a glance at a speedometer. AFR is best logged and then perused later. I fitted one for a while, screwed into the factory O2 sensor port in the standard crossover.
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I bought a Norton Commando 750 new in '72. Advertised as 0 to 60 in 4.5secs and top speed of 124mph. They forgot to mention you had to change gearbox sprockets from 19 to 21 tooth to get that top speed and of course then lost the acceleration. Truth in Advertising?
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Don't the carb accelerator pumps add that extra fuel when you close and reopen the throttle. Perhaps it just needs bigger jets. There again shutting off at high revs means the inrush of air cannot all go into the engine, instead it semi pressurises the ambient air side and reduces the fuel entering the float bowl so you need a fuel pump, bit like a blown motor.
Have fun.
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I spent a year in nortkern Pakistan as a Helicopter engineer on a Bell 412 for the Aga Khan Rural support Program. Absolutely stunning scenery, so many mountains that if under 20,000ft they rarely have a name. I often saw groups of motorcyclists snaking their way up the Karakorum Highway. This is a good road built by the military to serve the Northern Areas, pretty empty once you get into the foothills. Gilgit is lovely, sitting at the base of Rakaposhi, a huge mountain rising up from the valley floor. Google 'The Gilgit Game'. Hunza is close and is where the author James Hilton got inspiration to write Lost Horison, Shangri-La is said to be based on Hunza, there is even an ancient castle, once a Tibetan style monastry.
OK its 30 years since I have been there so perhaps some of the mountains have eroded a little.
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My car gives better mileage than my V11. Of course my car was designed by computer to have little wind resistance, where of course I am not so blessed.
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If in doubt, chuck the fluid out.
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Stunning! I kept trying to work out how the camera worked, seemed gyro stabalised but then rotated to look straight through where I thought the mount was. Not even obvious in the shadow.
That man must have the reactions of a mongoose.
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Thanks Kiwi Roy, I will pop doen and grab a handfull. Of course now nothing will ever fail!
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I see my local shop has fuses with an LED that glows if the fuse fails. Anyone tried these?
I suppose the thing the fuse is protecting has to still sink a current to light the LED.
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Are you sure you mean a four valve engine? My Rosso Corsa has that, perhaps you really mean an eight valve engine. Four valves per cylinder x two cylinders.
Edit: Hi GuzBun, just re-read my reply to you and realise it comes accross as rather rude. I was trying to make sure your advert would recieve the attention it requires, suggest either call it an eight valve motor or four valve head.
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So how does this dynamic thing work? Seems to me you need a closed loop system for that with an O2 sensor. Like the WM15RC or the MyECU.
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Now it is this
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Then it was this
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When I was younger this was my head protection
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You are right, mine is a Combat engine.
There are two problems with that engine.
To increase the compression they just skimmed the cylinder head but they did not alter the pushrod lengths so the geometry changed increasing side load on the valve stem, cured by shortening the rods.
The main bearing problem came about due to fitting roller bearings on both sides of the crank rather than the earlier roller and ball bearing set up. At max revs the crank flexes and so the edges of the rollers dig in and fail. The Superblend bearings are slightly barrel shaped so no sharp edge.
Any other manufacturer would have tried to stop the crank flexing! Of course this was the 1970's when British manufacturers sold you what they could make cheap rather than what you wanted. Think of the number of Brit built 'US spec' bikes that we lusted after but could not buy in the UK.
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Does anyone know anything about Aspen Alkylate fuel?
I was in my local garden machinery shop when the guy tried to sell me the 'latest long life fuel'.
He reckons it is the answer to ethanol fuel system damage and does not go off like unleaded fuel, tells me he sells it for garden machinery as it can be left in over winter with no damage and no starting problems. He also sells it to classic car and bike enthusiasts.
Apart from the fact it costs £19.00 for 5 litres as opposed to £6.50 for 5 litres of unleaded in the UK, I wondered if it works. A scam does not usually cost more than the thing it is replacing so it caught my attention. He also said there are attempts to get the fuel duty lowered on it as it is less harmful. Can't see that happening.
He tells me it is an American product although the leaflet he gave me has a UK website.
At the price it is of no use for a regularly used machine but may useful for that bike you rarely ride.
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Uh oh. Turning into a Norton thread.
You don't have to go inside a Commando engine to see the parts, wait long enough and they will come out to see you.
Bought my Commando new in '72. Rode home and noticed the rear indicator bracket had snapped off. A week later the centre stand snapped. Mains failed at 3,000 miles. Advance and retard at 5,000 which went to full retard and turned the downpipes bright red, not a problem as one then snapped a while later so needed changing anyways. Zener diode failure and boiled battery. The disc pads are not really held in too well, when the pad wears down you find the backing plate is the same thickness as the gap between the disc and the caliper so it flies out in front of you. Does alert you to the brake failure, what a cunning design. Oh, oil tank lower mount cracks through dumping all oil onto rear wheel, carb float bowl screws fall out...... Actually I love the bike and still have it today after 46 years, although safely in bits in the shed.
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crankcase vent return line
in Technical Topics
Posted
You could try Earl's Conical Seals, they are a thin metal conical shaped seal that fit over the cone of the AN fitting, used to take up wear for frequently dismantled items. They are called up on some helicopter engines as standard fit.
I am sure you will find more on the web, and possibly other manufacturers.
summitracing.com
Secoseals.com
Search conical seals.