ElectricBikeXP
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How do you do a properly rated fuse
Got a fuse question on my electric bicycle
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Gionnirocket
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One way is something like this Fuse holder
You can check with your local auto parts store.
Do you know the wattage of the motor?
ElectricBikeXP
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450 watt motor and for the record a person on here earlier was right the chains do need replaced so thanks for his input also.i got a lot of slack in those chains especially the one from the motor to the wheel
Gionnirocket
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That's great... It seems the bike needs the once_over.
I think that would cause slippage and gear damage but I'm not sure how that would cause the fuse to blow... but perhaps I'm missing something.
In any case it's best to take care of it.
450w ÷ 24V = 18.75 amps...
Motor loads are typically fused over there full current rating to account for startup in rush... So I would say a 30a slow blow fuse would be proper
Fuse
This is a Maxi style fuse so it will require a slightly larger holder than the one I originally sent you like this Fuse holder
Easiest thing to do would be to check with a good auto parts store.
If not I can help you find something online
ElectricBikeXP
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Ok thanks i will try my local auto parts store for that part
You must have a short somewhere and will keep blowing fuses until you locate the short, my ignorant guess is that it is a problem with the controller like you suspect. My wife had one of those side saddle Currie motors on an IZIP TRAILZ AL bike several years ago. I doubt that you could blow a fuse by how you ride it or due to chain condition unless it was jammed up tight somehow. I lugged that motor riding it up a mountain without blowing the fuse. Don't see how changing a fuse or fuse holder is going to help but for simple installation without soldering or using wire nuts this is a good blade type fuse holder that I have used once or twice.
Gionnirocket
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Changing the fuse holder can help because he is using an AC rated fuse/holder.
First start off with the proper fuse.
After re_reading the initial post, one piece of information missing is does the fuse blow immediately when you try to run the motor or does it happen some time down the road during use... My assumption was the latter.
Do you remember what amperage the fuse was that you were using?
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ElectricBikeXP
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I was wondering that myself I did put electrical tape around that end of the fuse holder I can run it for days and it don't blow then out of the blue it just blows.now I don't use the throttle constantly sometimes I shut the motor off on level road .I can reach the switch on the left side of the box while I am riding .I tried finding a new wiring harness for it but it's out of stock
Gionnirocket
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Isn't that the wire that goes to the battery?
Hard to tell as it's a different angle and blurry?
ElectricBikeXP
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Yes it goes to the positive terminal on the battery
ElectricBikeXP
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ElectricBikeXP
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So what ur saying on the fuel it thing in the orange box is I can use a plug in fuse instead of a glass fuse 40 amp of course
Gionnirocket
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Then a short before the fuse... Wouldn't blow the fuse.
Gionnirocket
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Yes... That's similar to what I suggested yesterday. It's the proper fuse as it is DC: Direct Current.. battery power.
The one that you are currently using is AC: Alternating Current as found in your home.
Though they work in principle the same... DC requires a larger gap when it blows. And the AC one is also fast acting... Not slow blow.
A final note.. the one suggested here only goes up to 30 amp. Which may be fine... But I do not think that you will find a slow blow in this ATC/ATO style.
That's why I suggested the Maxi style which goes up to 80 amp and also allows for the slow blow type fuse
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ElectricBikeXP
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Ok thankyou for the advice everyone here has been great and great people on here
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