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  #21 (permalink)  
Old 29th May 2007, 14:50
Tintaglia Tintaglia is offline
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It's the one in your first picture (the one of the motor itself) at the bottom of the motor shaft.
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  #22 (permalink)  
Old 29th May 2007, 15:39
Tintaglia Tintaglia is offline
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I can see with a magnifing glass it has a number- 6901Z or is it Z1096? Trust me to get a number that can be read upside-down! I'm taking it as the former because round the other side it says "NTN Japan". That number doesn't seem to come up on google. I'll have to try some bearing suppliers.
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  #23 (permalink)  
Old 29th May 2007, 16:19
Tintaglia Tintaglia is offline
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I have located a bearing. In fact, two so I'll have a spare if anyone here ever wants one.

Looks like I need a two legged puller to get it off.

Just hope all this works and I can remember where all the bits go
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  #24 (permalink)  
Old 29th May 2007, 16:32
flecc flecc is offline
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Fingers crossed!

That bearing could well be the offending thing that was causing the kick back as it bound up.
.
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  #25 (permalink)  
Old 29th May 2007, 16:35
JohnInStockie JohnInStockie is offline
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Flecc and Tintaglia

Not being funny but you 2 could run training courses on electric motors, you've both forgotten more than I know on the subject. If I tried anything like that I'd definately make such a mess I'd have to buy another bike!

Any tips on how you go about learning these things (without destroying half a dozen bikes)?

John
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  #26 (permalink)  
Old 29th May 2007, 16:49
Tintaglia Tintaglia is offline
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My wife (whose bike it is) has already started saving up for a new bike (oh she of little faith) She yelps every time I remove another part!!

I would have been very wary of taking it apart at all without flecc's excellent article and ongoing help and advice.
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  #27 (permalink)  
Old 29th May 2007, 17:02
flecc flecc is offline
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Just a feel for the subject from a very early age, and the totalling of experience in my case John. I get bored with some forms of repetition and could never spend my life doing one thing.

I started in the cycle and motor cycle trade 57 years ago when they were often combined, moved onto the motor trade, cars, then trucks and transporters, moved on to somewhat more sophisticated areas of engineering, electrical, electronic, and even optical engineering, then got involved in design, particularly in some electronic and oddball areas. Eventually another complete change to an area of construction engineering.

I even trained in teaching and training principles at one point, but finally decided I'd had enough of working and retired at 54 to do my own thing. A varied life, but always in relation to engineering and technical matters, even during my army time.

Courses have very limited usefulness, aptitude is infinitely more important, in which connection at least 70% of the population have an arts bias and seem unable to satisfactorily acquire technical skills.
.
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Old 29th May 2007, 17:18
nigel nigel is offline
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Should have guessed i will have to start calling you professor flecc its good to know we have you on board. NIGEL
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  #29 (permalink)  
Old 29th May 2007, 18:13
flecc flecc is offline
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Thanks Nigel, but not professor please. It's embarrassing enough having the pedelec guru title.

I keep my feet firmly on the ground, simply because I know that for every one thing I do know, there's an almost infinite number of things I don't know.
.
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  #30 (permalink)  
Old 29th May 2007, 18:27
electric.mike electric.mike is offline
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flecc

Quote:
I keep my feet firmly on the ground, simply because I know that for every one thing I do know, there's an almost infinite number of things I don't know.
the one thing we all should know is that we don't know what we don't know, we don't always know what we do know,i think or heck i don't know.

mike
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