FASTdan
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| posted on 26/8/13 at 05:11 PM |
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reverse polarity - bike pump, what happens?
Connecting a Bike pump backwards, anyone done it? Will it cause damage? Reluctant to try on one of my own for obvious reasons!!
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teegray19
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| posted on 26/8/13 at 05:30 PM |
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What's the reason?
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FASTdan
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| posted on 26/8/13 at 05:44 PM |
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Two damaged pumps, both returned from the same customer, both with the same burnt out ground wire inside the casing. First pump was unknown, second
tested (as they all are now) and working prior to dispatch. Both pumps run if the burnt wire is reconnected but due to location it it's
impossible to repair.
A refund is the only course of action but I'm still interested to know for future reference.
NEW danST WEBSITE NOW LIVE! Bike carbs, throttle bodies and more......
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teegray19
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| posted on 26/8/13 at 05:56 PM |
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Got to be customer breaking it then?
I'd have thought it may last a try or two wrong way round, after that as you say, knackered...
Are the wires simply red and black? Surely hard to get wrong...
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austin man
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| posted on 26/8/13 at 06:02 PM |
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is he running the pump dry
Life is like a bowl of fruit, funny how all the weird looking ones are left alone
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FASTdan
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| posted on 26/8/13 at 06:33 PM |
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I don't think it will have been run dry for any length of time but it's all taking someone's word for it just like 'it was
connected the right way'. I would expect that it would need to be run dry for a while before things started heating up/seizing sufficiently to
then overload the connections.
I'm just curious as I don't have a full understanding of the way they work electrically - some dc motors will simply run backwards
iirc.
Cable colours are plain black and black (ground) with blue stripe (live).
Frustrating - as no matter what you do as a retailer (instructions, inspection, test etc) it only takes a simple error on the customers part and you
have a case of your word against there's. A hazard of the business I guess...
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MikeRJ
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| posted on 26/8/13 at 07:26 PM |
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What sort of pump are we talking about, a high pressure fuel injection pump, or the very low pressure pump used for carbs on the larger bikes?
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FASTdan
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| posted on 26/8/13 at 08:26 PM |
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quote:
Originally posted by MikeRJ
What sort of pump are we talking about, a high pressure fuel injection pump, or the very low pressure pump used for carbs on the larger bikes?
Sorry carb'd big Bike :-) r1 specifically.
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will121
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| posted on 27/8/13 at 06:04 AM |
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I've run one with reverse polarity, but not for a long period, it ran ok and still pumped fuel just at a reduced flow rate.
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