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D.I.Y Electric hose reel conversion for less than £50

WCF

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I Recieved the microfiber pronged things. 

I think they got wise to it. Just asked for refund or the motors I  ordered. 

I recon some poor chap is having a bolocking for a typo ?
I’ll end up with them most likely...

Refund it is

 
I Recieved the microfiber pronged things. 

I think they got wise to it. Just asked for refund or the motors I  ordered. 

I recon some poor chap is having a bolocking for a typo ?
I don't even know if they got wise to it or if it's just so badly organised that the left hand doesn't know what the right is doing. Surely once they'd realised their mistake (if mistake it was) then they'd edit the listing. Maybe it's just pot luck wether you get motors or microfiber prongy things!

@Tuffers Hope your aspiring entrepreneur doesn't end up with 1000 microfiber prongs! (Why do PetrolScooter even have microfiber glassers wipers anyhow? Did they just send them from another seller as a loophole as they have to send something )

Edit: they've updated the price, now £24.49

 
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Trick is finding a sprocket that’s suitable.

I’ve had to order the one from China as I need a large inner hole to fit my reel...

 
Trick is finding a sprocket that’s suitable.

I’ve had to order the one from China as I need a large inner hole to fit my reel...
I have searched the entirety of the internet it seems looking for the perfect sprocket. I've looked into custom laser cutting but it's expensive for a single item. 

There seems to be 3 common central hole diameters: 26mm (a touch too small for us), 29mm and 54mm.

Then for the 3 holes sprockets, there are many different sizes between the holes, most common being about 33mm.

We need 46mm for the petal reel. 

Also many different numbers of teeth. The bigger ones with more teeth are better for us.

The power up ad-on kit has 80 teeth. Must have had them custom made. (Pictured below)

Screenshot_20190131-190636.png

 
I have searched the entirety of the internet it seems looking for the perfect sprocket. I've looked into custom laser cutting but it's expensive for a single item. 

There seems to be 3 common central hole diameters: 26mm (a touch too small for us), 29mm and 54mm.

Then for the 3 holes sprockets, there are many different sizes between the holes, most common being about 33mm.

We need 46mm for the petal reel. 

Also many different numbers of teeth. The bigger ones with more teeth are better for us.

The power up ad-on kit has 80 teeth. Must have had them custom made. (Pictured below)

View attachment 15653


Interesting that it has 80 teeth. Common engineering practice is to use an odd number of teeth for the driving sprocket in combination with an even number of chain links for uniform wear and tear on the teeth and rollers. In this case, a particular tooth of the sprocket wheel does not come in contact with a particular link of the chain for every rotation.

It would appear that Asian engineering doesn't follow this practise (I didn't know that) so it could well be that these spockets are available somewhere in Asia as a standard item. I couldn't imagine Waterworks paying large sums for a couple of custom made sprockets.

https://www.logisticshandling.com/articles/2012/09/05/1952-why-having-odd-teeth-could-save-you/

The motor drive socket has 11 teeth so I would go back to finding a sprocket with an odd number of teeth and fitting a chain with an even number of links.

But then, considering the low usage (not continious) of the reel, am I nitpicking? 

 
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Interesting that it has 80 teeth. Common engineering practice is to use an odd number of teeth for the driving sprocket in combination with an even number of chain links for uniform wear and tear on the teeth and rollers. In this case, a particular tooth of the sprocket wheel does not come in contact with a particular link of the chain for every rotation.

It would appear that Asian engineering doesn't follow this practise (I didn't know that) so it could well be that these spockets are available somewhere in Asia as a standard item. I couldn't imagine Waterworks paying large sums for a couple of custom made sprockets.

https://www.logisticshandling.com/articles/2012/09/05/1952-why-having-odd-teeth-could-save-you/

The motor drive socket has 11 teeth so I would go back to finding a sprocket with an odd number of teeth and fitting a chain with an even number of links.

But then, considering the low usage (not continious) of the reel, am I nitpicking? 
That's pretty interesting, never heard that before. Makes sense, though even numbers seem pretty common with these rear ebike/scooter sprockets.

I bought 2 78t ones. 60t are also common and the original sprocket listed on pg1 of this thread (now out of stock) is 80t. Wonder if they use an odd number of links?

Maybe they're available in Asia but I've spent a long time on Alibaba and Wish looking without results.

(I've got a bad cold at the moment so plenty of time on my hands until I feel up to going back ? )

 
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