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Mar 31, 2020 15:20:11 GMT
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Modern CAD just doesn't cut it. This is art! Couldn't agree more - even though I use CAD all the time, I find that the old drawings like this are so much clearer due to the control that the draughtsman has over lineweight etc. When I'm creating 2D drawings from 3D CAD (recently it's been the machining drawings for multi-valve cylinder heads - for the casting itself, the pattern maker uses the 3D file directly), I still always have to set the lineweights & line colours manually to get the desired clarity.
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TessierAshpool
Club Retro Rides Member
Posts: 507
Club RR Member Number: 168
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OK so spark, there was none. A check of the points revealed a lot of pitting, so the guilty party was probably the condenser/capacitor. Prayers were made to the Prince of Darkness, and lo we did have spark. The one I used is to fit a triumph Spitfire I believe, any old automotive one will do for this sort of application. While this was going on in the background the petrol tank has been gently marinading with vinegar, in goes white vinegar, out comes brown vinegar... Far from perfect inside the tank, bu she'll do. I'm still waiting for paint so that I can paint the block and cowlings, so don't want to refit the carb or tank yet, but I thought I would have a crack at firing it up anyway. Injected a little petrol straight into the intake hole, wrapped some twine around the starter and gave it a pull. It buzzed in to life, then skipped over, landed on the cooling fins and broke every single one off. Well, curse word. So, I've nicked the good one from Engine B and now need to restore that one as well. Oh well, lesson learned and temporary mount made
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That's a pain! Will it easy to source a replacement casting, or are you going to just rebuild one unit now & use the other purely for parts?
Btw, I've been wondering (& apologies in advance if this is a silly question...), but is a stationary engine like this useful for much these days (given that they seem to be obselete for their original purposes), aside of course from the fun of rebuilding and tinkering with it?
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Last Edit: Apr 1, 2020 22:04:43 GMT by Paul H
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TessierAshpool
Club Retro Rides Member
Posts: 507
Club RR Member Number: 168
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That's a pain! Will it easy to source a replacement casting, or are you going to just rebuild one unit now & use the other purely for parts? Btw, I've been wondering (& apologies in advance if this is a silly question...), but is a stationary engine like this useful for much these days (given that they seem to be obselete for their original purposes), aside of course from the fun of rebuilding and tinkering with it? Although sourcing a replacement flywheel would be possible, it would easily exceed the total cost of the engine (I paid £15 each for them). I was already past the point where it would be worth restoring both I think. For Engine B at a minimum I know I would need to buy: the flywheel, a carb body (and main jet), a petrol tap, an air filter, probably a petrol tank, and a condenser. That's just to cover what I know to be wrong with it at the moment, as I haven't looked in to why it doesn't have compression or spark. A stationary engine is not really of much use now, most tasks for this sort of thing would now be done with electric motors. That being said, I do have a top secret idea for a future project that involves this engine, but it's only realistic if I can source the other parts I need, and if travel restrictions are ever lifted.
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Flywheel... Ohh, oops. You didn't have it screwed down then? The ones I played with had a flywheel that went below the mount points so they had to be bolted to a sleeper to get the flywheel off the floor. Paul H, people have been wondering for years what you could use one of these for in modern times. Largely nothing. In theory, anything that currently has an engine on it but some of these old engines are stupidly heavy and put out so little power that they wouldn't be practical. Generally they spin too slowly for modern applications too. Most of them belong to collections and go out to county shows. The better displays will be driving a typical period piece of equipment. When I was a kid the favourite was a water pump with a 'magic' running tap that had no pipe going to it. Sometimes it just floated in mid air... My little Stuart engine just sits under a cloth gathering dust. I must drag it out and start it sometime.
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glenanderson
Club Retro Rides Member
Posts: 4,102
Club RR Member Number: 64
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They used them to power stuff like sheep shears and hedge cutters too.
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My worst worry about dying is my wife selling my stuff for what I told her it cost...
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I feel your pain with the flywheel, I would have done exactly the same in eagerness for the 1st fire up!!
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TessierAshpool
Club Retro Rides Member
Posts: 507
Club RR Member Number: 168
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I feel your pain with the flywheel, I would have done exactly the same in eagerness for the 1st fire up!! At least I had a spare! Just had to roll my eyes and shrug my shoulders, these things happen and I try and make each mistake only once
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TessierAshpool
Club Retro Rides Member
Posts: 507
Club RR Member Number: 168
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Further to my post above about what I need for Engine B, a quick look on eBay and I need around £65 in parts so far excluding the flywheel (which I can't find one of at the moment), which is already four times what I paid for the engine. So yeah, Engine B is definitely a parts donor only at this stage.
However, if I can get a spark out of it and get it to fire at all, I may sell it on cheaply as a sort-of-running project for someone else. The problems are not insurmountable with Engine B, just more than I am willing to put time in to when I already have one good engine.
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“Prayers were made to the prince of darkness “!!? I didn’t know Ozzy Osborne was a J.A.P. Engine fan🤣
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jpsmit
Posted a lot
Posts: 1,254
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“Prayers were made to the prince of darkness “!!? I didn’t know Ozzy Osborne was a J.A.P. Engine fan🤣 Ozzy is just a poser compared to the true prince of darkness!
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Last Edit: Apr 3, 2020 14:00:04 GMT by jpsmit
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MiataMark
Club Retro Rides Member
Posts: 2,961
Club RR Member Number: 29
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Could you run one as a generator. I know it's probably one of the most inefficient ways of generating power.
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1990 Mazda MX-52012 BMW 118i (170bhp) - white appliance 2011 Land Rover Freelander 2 TD4 2003 Land Rover Discovery II TD52007 Alfa Romeo 159 Sportwagon JTDm
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TessierAshpool
Club Retro Rides Member
Posts: 507
Club RR Member Number: 168
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Could you run one as a generator. I know it's probably one of the most inefficient ways of generating power. Certainly could, not found any rev ranges for this, but the power rating is quoted at 2500 or 3000 RPM depending on the source, which puts it in the sort of generator range of speeds. You could also hook it directly to a car alternator, it already has a belt pulley attachment on it so all you would need is a belt and alternator from any old car and you have yourself a 12V source.
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glenanderson
Club Retro Rides Member
Posts: 4,102
Club RR Member Number: 64
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Could you run one as a generator. I know it's probably one of the most inefficient ways of generating power. Couple it up with a dynamo and control box, and use it as a portable battery charger.
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My worst worry about dying is my wife selling my stuff for what I told her it cost...
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glenanderson
Club Retro Rides Member
Posts: 4,102
Club RR Member Number: 64
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Before I was born, from the middle of the 1950s through to middle of the 60s, my dad worked for a company that made sheep shearing equipment. One of the few things I have, other than pictures, of that period in his life, is this hand-painted sign, that hangs in my workshop. I thought it’d be appropriate to share it on this thread. I know it’s Lister, not J.A.P. but along with Anzani, BSA, Villiers and others, it’s part of the forgotten backstory of these little engines.
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My worst worry about dying is my wife selling my stuff for what I told her it cost...
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Frankenhealey
Club Retro Rides Member
And I looked, and behold, a pale horse! And its rider's name was Death
Posts: 3,875
Club RR Member Number: 15
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Could you run one as a generator. I know it's probably one of the most inefficient ways of generating power. Couple it up with a dynamo and control box, and use it as a portable battery charger. You could put that in the back of a Tesla and call it a range extender
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Tales of the Volcano Lair hereFrankenBug - Vulcan Power hereThe Frankenhealey here
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TessierAshpool
Club Retro Rides Member
Posts: 507
Club RR Member Number: 168
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Well, that's her finished for now. Painted and assembled, and running well It's loud as hell though as all it's got is a 2" straight pipe (that's length, not diameter!). I'll keep a look out for a silencer, and I'm going to park this project for now until I find a use for it (and the world has returned to normal). Pics:
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glenanderson
Club Retro Rides Member
Posts: 4,102
Club RR Member Number: 64
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Smashing.
You need to keep an eye out for a little trolley to mount it, and whatever you decide to power from it on.
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My worst worry about dying is my wife selling my stuff for what I told her it cost...
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Frankenhealey
Club Retro Rides Member
And I looked, and behold, a pale horse! And its rider's name was Death
Posts: 3,875
Club RR Member Number: 15
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That's screaming out for a finger lopper, I mean saw bench.
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Tales of the Volcano Lair hereFrankenBug - Vulcan Power hereThe Frankenhealey here
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Frankenhealey
Club Retro Rides Member
And I looked, and behold, a pale horse! And its rider's name was Death
Posts: 3,875
Club RR Member Number: 15
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Smashing. You need to keep an eye out for a little trolley to mount it, and whatever you decide to power from it on. Get on with that Land Rover and stop wasting time on here. Your father-in-law is waiting to wash and polish his car (PS sorry for the hijack )
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Tales of the Volcano Lair hereFrankenBug - Vulcan Power hereThe Frankenhealey here
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