RichardK
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| posted on 19/2/12 at 12:44 PM |
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Motorbike twin starter motor
I've posted this on another forum but you guys and gals seems to know everything so here goes:
I've got 2 starters and they are both the same in that when I connect either one up directly to my car battery you can stop the motor with your
fingers (with the help of a towel !) surely this isnt right?
I have aquired a ex250-c1 (gpz250) which as far as I can make out is identical to the 305 belt drive (except the bores obviously) and the motor that
was in the frame had been bodged beyond the extreme, which caused the engine to be seized when I got it although the seller said it was free anyway
could the previous owners attemps to start a seized engine damage the windings? Havent got a meter accross the windings yet as I just want it
confirming that the motor should have loads more torque that both of these have.
Cheers
Rich
Then later I've posted.....
Just checked all of the communicator segments and they are all clear and all give very low resistance, cleaned up the communicator with emery paper
and still the same, I'm going straight from a car battery with jump leads to the motor and I can still stop it with my fingers but if I let it
spin its seems to sound nice and smooth, just no torque. Both starters are the same although haven't cleaned up the other one.
Any ideas?
Cheers
Rich
Gallery updated 11/01/2011
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RichardK
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| posted on 19/2/12 at 12:45 PM |
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It's a kawasaki gpz250 twin btw
Love
Rich
Gallery updated 11/01/2011
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MakeEverything
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| posted on 19/2/12 at 01:44 PM |
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Is there a gearbox on the engine that the starter drives? I would have your that a twin needed quite a bit of torque. Can you turn the engine over
by hand? It might be proportionate and enough to turn the engine, thoug I would be surprised.
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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RichardK
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| posted on 19/2/12 at 01:48 PM |
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Nah no gear box is essentialy got a clutched gear on the back of the stator,, yes can turn it over by hand although is hard due to the compression but
it will turn, annoyingly there is no nut to put a socket onto to turn it over.
Cheers
Rich
Gallery updated 11/01/2011
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Slimy38
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| posted on 19/2/12 at 02:32 PM |
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I don't know about this particular engine, but on my Yamaha 600 (inline 4) the starter motor is tiny and there are two reduction gears before it
gets to the crankshaft, with something like 5:1, 5:1 and 10:1 ratios. One of the gears is clutched.
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Chippy
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| posted on 19/2/12 at 04:46 PM |
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quote:
Originally posted by RichardK
It's a kawasaki gpz250 twin btw
Rich
Send a U2U to robocog, he has one, although I think his is a 500. But sure he will be able to help as well into the GPZ. HTH Ray
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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RichardK
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| posted on 20/2/12 at 01:17 PM |
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Friggin cheapo jump start cables,I'm going to say no more.
Cheers
Love
Rich
Gallery updated 11/01/2011
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