GoldenMotor.com Forum
General Category => General Discussions => Topic started by: MagneticMotorE on August 25, 2011, 06:13:19 AM
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why does my Magic Pie II make a pinging sound when cruising?
it sounds like something may be loose...
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If it's making a pinging noise when riding without a battery, it may be because the spokes are loosening as they settle in with use.
Check the tension of the spokes and re-tension them if required using a size 13 spoke key. Make sure you tension the spokes evenly to ensure the wheel remains true.
I use a universal spoke key like this:
(http://www.arhservices.co.uk/GoldenMotor/SpokeKey.GIF)
It's cheap and cheerful, but does the job nicely.
The pinging noise from the motor under load (http://www.youtube.com/watch?v=Lr2jtIX4lWs) is caused by the electromagnetic pulses from the stator windings.
Alan
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you are truly helpful.. :D
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my experience is that the new pies are shipping with very loose spokes...much better that you go to a bike shop and ask them to tighten for you, as you may pull the hub away from the middle......
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i tighten it up already but I think I might consider the going to Bicycle Mechanic to Make Sure it is Balanced. Makes Much Sense!
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I have found the spokes actually loosen while
riding in my Magic Pie. (It has been trued once.)
I have never had a double walled rim before, I think
that the inner tube has always pressed the spoke
caps and held them on other rims.
I just re-trued my rim after one cap actually came off
and fell into the rim.
I am going to put lock-tight on the caps after I ride and
re-true it once more.