Starting a Norton engine ??
- Thread starter mike996
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If you have an Alton you can do it, no?
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gory said:
Better let go when the engine starts!
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gory said:
I'll hold your beer while you try.
concours
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My 2.5 liter V-6 Mercury outboard has an emergency rope stowed in the engine cowl. I'd like to meet the sumbich that can start it... :shock:
Seriously, though, (and I've done this..) remove one spark plug, loosen the other one a lot, so compression will leak. Align it well so you have 700 degrees of crank rotation to accelerate it... ( I think the rope idea has the most merit, home made LARGE sheave fron an old v-belt pulley, notched.) when it starts you can install the second plug, put on the wire (use a glove) and then tighten the other one. Make sure the camera is rolling :mrgreen:
Seriously, though, (and I've done this..) remove one spark plug, loosen the other one a lot, so compression will leak. Align it well so you have 700 degrees of crank rotation to accelerate it... ( I think the rope idea has the most merit, home made LARGE sheave fron an old v-belt pulley, notched.) when it starts you can install the second plug, put on the wire (use a glove) and then tighten the other one. Make sure the camera is rolling :mrgreen:
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re an Alton starter - yes, it could start the bike without the triplex chain but the triplex sprocket/alternator rotor would have to be in place. I was trying to think of a way to start it with nothing attached to the crankshaft on the chaincase side.
So I guess the answer is "NO."
So I guess the answer is "NO."
I suppose that you could modify a nut into something like this:
Then make something like this that would fit into your drill:
Basically an old hand crank setup, they were designed to disengage when the engine starts.
I wouldn't think that it would be too difficult to make the idea fit a norton crank.
Then make something like this that would fit into your drill:
Basically an old hand crank setup, they were designed to disengage when the engine starts.
I wouldn't think that it would be too difficult to make the idea fit a norton crank.
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Sure, just use my crank triggered starter seen at the start of this video. Made from a car starter and with a big aluminum nut on the crank- end rounded off on the edges so the big socket of the starter will slip off easily.
[video]http://www.youtube.com/watch?v=wo9TRVEmHmg&list=UUrdIsqkpsY5bR1-LDwMVDSg&index=4[/video]
[video]http://www.youtube.com/watch?v=wo9TRVEmHmg&list=UUrdIsqkpsY5bR1-LDwMVDSg&index=4[/video]
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mike996 said:re an Alton starter - yes, it could start the bike without the triplex chain but the triplex sprocket/alternator rotor would have to be in place. I was trying to think of a way to start it with nothing attached to the crankshaft on the chaincase side.
So I guess the answer is "NO."
Good, because the question still remains... WHY?
concours
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swooshdave said:mike996 said:re an Alton starter - yes, it could start the bike without the triplex chain but the triplex sprocket/alternator rotor would have to be in place. I was trying to think of a way to start it with nothing attached to the crankshaft on the chaincase side.
So I guess the answer is "NO."
Good, because the question still remains... WHY?
Maybe this: transmission-losses-t15821.html
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A friend (former britt-bike mech and repair shop owner) and I were interested in trying to measure crankshaft runout with the engine running so as to determine if there was any difference in runout based on the force on the pistons being pushed down by the firing process as opposed to measuring it when rotating the engine by hand. We wanted to do it without a alternator rotor to ensure any rotor out-of-roundness didn't confuse the measurement. It was more an engineering thought-exercise than anything else.
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"Runout due to firing - Why are crankshafts balanced ?"
Depending on design/number of bearings, etc, a Crankshaft will flex to some degree under firing pressure but not if you just turn it by hand. Based on the bolt-up nature of a Norton crank, I'd bet there is considerable flex (in relative terms). As I said, we were just curious.
Depending on design/number of bearings, etc, a Crankshaft will flex to some degree under firing pressure but not if you just turn it by hand. Based on the bolt-up nature of a Norton crank, I'd bet there is considerable flex (in relative terms). As I said, we were just curious.
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