Sir Nibble
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Posts posted by Sir Nibble
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I don't know. I am struggling to see how the 3 phases superimposed upon one another would work as a transformer primary. If there was a lot of induction at work then each phase should be interfering with each other as well as dumping to earth. I suspect any observable effect is capacitive in origin. But like I said, I don't know, but I would like to. The flint axe technician within me says that if frost forms on the pylon in winter, there's no problem.
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1 hour ago, Alan de Enfield said:
He finished his lunch, came back to his digger and continued throwing the shingle about. Finished his shift earlier than planned, went home and found his wife in bed with a Red chocolate M&M who suddenly realised why she was biting him. The Yellow chocolate M&M (in the proposed threesome) came out of the wardrobe shouting 'I'm coming, ready or not'.
You must be psychic!
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I once went out to a 360⁰ excavator stuck on a beach where it had been chucking shingle about as part of sea defence work. Driver went to lunch. You know what happens next don't you.
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Why. I mean what has walking backwards, forwards or on the moon have to do with cancer? Kudos to the guy but why do we have this obsession with having to do everything FOR something? Do people really think cancer care not worth supporting unless someone takes some form of exercise? Have you ever seen a London marathon runner admit that they're all there because they enjoy running and the charity stuff is just garnish?
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The Epsilon variant is already with us.
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I would go to H C Cargo. Bosch quality control, good kit, good price.
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Chinese manufacture is fine so long as it has western quality control.
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"Rivery". I love it! So much, I'm going to steal it.
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4 minutes ago, Jen-in-Wellies said:
Spring in the panel key switch not returning it from the start to the run position reliably? Might be worth replacing the switch too. Relatively cheap compared with a starter motor.
Yes, that's usually it. If it's been running on the starter will be ruined, you take the back off and half the armature falls out at your feet.
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1 hour ago, Tracy D'arth said:
That is the problem, they are migrating to Vodabone network hence the new sim requirement.
But the phone isn't locked so the giffgaff will work right away.
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Asda mobile is linked to O² so a giffgaff sim will work right away.
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6 minutes ago, dmr said:
That sounds like made in China. Are they good quality?
On a different alternator I have seen a big variation is slip ring wear. It might be bad luck but maybe some carbon brushes are a bit gritty, Have you got any thoughts on this?
Anyway, get some in, cut the ground strap and sell them on eBay for £15 ?
Good quality or I wouldn't be using this company as my main supplier. Slip ring wear is common but replacements are cheap and no big deal to fit. Suppose I get a brush assy, modify it and send it to you for checking?
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£1.59 + vat to me!
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Sorry for the delay, been off scribbling in microsoft (TM) paint.
Alternators should mount either like this on a solid lug with a long bolt.
or like this, with two separate lugs and seperate bolts.In both these drawings I have highlighted a sliding bush in yellow which is pressed into the alternator casting and slides through as the bolt is tightened to take up any clearance.
If the different types are mixed and the long bolt from the top example is used in the bottom example with two separate mounts this happens.
The bolt squeezes at the black arrows, the yellow bush slides through and the two mounts are distorted by stress until a fracture occurs (red arrow) where the leverage from the point of pressure concentrates stress.
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On 27/06/2021 at 12:35, spicemouse said:
Again, lots of good stuff in here for me.
When I got the boat my survey said that the timber is cracked, however it might last another 10 years before this is a big issue. Replacing it would have been ideal, unfortunately the workshop was quoting me more than I could afford.. In the end we opted for replacing the mounting points and adding the steel plates (which do have additional pins into the timber).
You can see how much higher original setup was:
The mounts do have to be at a minimum height I think in part due to the position of this alternator support arm:
You can see that when attached it drops about 5cm below the L beam.
As others have said, the main reason it was all thought to be acceptable was that this is a hydrault drive, so the vibrations shouldn't be as big an issue.
I'm stuck in a location without elsan, bins, or water, and now no hot water, so I think I'll have to take whatever fix I can find to get me moving again. I do agree thought that if the cause of this is the setup, then the setup does have to change. I'm not one for just sitting on something till it breaks.
The installation is odd, but I don't see anything actually "wrong " with it. I am convinced that the problem is with the stress resulting from the long bolt at the bottom mounting putting strain on the mounting lugs. The break will be at the point where that stress was concentrated. Get it welded and use two shorter bolts, put the new part on order for your peace of mind.
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The mounting bolt at the bottom appears to have bottomed out on the threads. There's a gap at the front. When you reassemble replace it with two shorter bolts and tighten the pulley end one first.
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30 minutes ago, dmr said:
There are two types of alternator, the older systems used a Bosch, the newer ones are an Iskra (I think).
The old Bosch one has the more severe bearing failure risk as it was never intended for a highly tensioned polyV belt so needs new bearings every few thousand hours.
The Bosch brush box also needs some though as a grounding strap has to be cut through . If its supplied by Four Counties then he will have done this but if it comes from eBay or an auto parts place you might have to do this yourself. I think its an expensive failure if you get this wrong.
.............Dave
Bet I can turn them out for less than a fiver.
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I have to say, and apologies to the people with problems, but heater problems in June. Welcome to England.
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Interesting. Any chance of a picture of the new brush gear?
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We only have two seasons. The light grey season and the dark grey season.
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To me, a radiator cap job is where you jack up the radiator cap and run a new car under it.
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Reminds me of the time a bus driver asked me to do the plugs and points on a Gardner 6LX.
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It would take a bloody sight longer if it were me doing the work.????
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Cropredy festival cancelled for 2021
in General Boating
Posted
Due to the cancellation, Fairport will be doing one festival gig at Wickham in Hampshire in August. AND I GOT A VIP BACKSTAGE PASS!😁