Fitting yose power

detec52

Pedelecer
Jan 14, 2011
62
5
Hi all you clever people I'm about to order a yose power 250w set up for my Barracuda mountain bike, but the only thing I can see that maybe could be a problem is the crank sensor I have taken a picture of the crank it looks different to all the you tube clips I have seen could someone in the know put me on the right path please, many thanks.
 

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saneagle

Esteemed Pedelecer
Oct 10, 2010
8,043
3,681
Telford
Hi all you clever people I'm about to order a yose power 250w set up for my Barracuda mountain bike, but the only thing I can see that maybe could be a problem is the crank sensor I have taken a picture of the crank it looks different to all the you tube clips I have seen could someone in the know put me on the right path please, many thanks.
That's a really crappy one, but it's the best type to fit a normal magnet disc and sensor type pedal sensor arrangement because you can fit it on either side of the bike. You can't fit the integrated one that comes with the kit unless you change the bottom bracket to a cartridge type that you can get from Halfords for about a tenner. If you stick with your present BB, make sure you know how to adjust it because you will likely disturb its adjustment when you fit the sensor.

Yose sell a left side 12 magnet disc type sensor as an optional extra for £12. personally, I'd rather buy the cartridge BB and fit the standard sensor.
 
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detec52

Pedelecer
Jan 14, 2011
62
5
Many Thanks, so if I get the halfords one then I can fit the one that comes with the yose kit then, if it's only a tenner or so maybe best option you think?
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
8,043
3,681
Telford

thelarkbox

Esteemed Pedelecer
Aug 23, 2023
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oxon
The default one piece yose-power pas sensor requires a circular < 17mm diameter crank, it might fit on a 17mm hex?? the alternative option for fitting on the right hand side in 2 pieces (magnet disk and sensor) is less demanding on crank dimensions/shape and works in more cases at no extra cost or issue.

fwiw i missed this on initial order and with a slightly larger than 17mm diameter crank, the sensor binds and rotates until halted by the secured cable changing the delays motor activation/deactivation exhibit as a result.. or did this end..
 

detec52

Pedelecer
Jan 14, 2011
62
5
Great information Thankyou it's good to have informative people on here, I'm OK at spanner work ect, but this will be my first ebike build I do have a ebike but it's a fold up 20in wheel job, and old like me lol, so time to move on.
 

thelarkbox

Esteemed Pedelecer
Aug 23, 2023
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It Should be plain sailing, bolt on the battery base n display, fit the wheel, plug it all together and tidy up the cables..
If any problems Yose support if needed will respond in a timely fashion and probably by staff in a different time zone and not using english as a primary language relying on translation services ( personal theory/guess) - my experience with the above mentioned pas sensor was Identified and the alternative sensor solution was provided within 2-3 exchanges.. Someone with a bad controller received a replacement after supplying the photo evidence requested.

The one thing i left off the fit for a few months was a double check that all spokes were under equal is tension, (simple tap with a spanner and listen to the 'ring' testing)- and a few did need a snug up..
 
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detec52

Pedelecer
Jan 14, 2011
62
5
I'm going to halfords to buy a new bottom bracket for my bike as the one on it now is the old type, halfords one is around £10 so what peddle sensor would I need in the picture is it the top left one? Sorry this is my first build so a bit of a novice at moment Thankyou.
 

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saneagle

Esteemed Pedelecer
Oct 10, 2010
8,043
3,681
Telford
I'm going to halfords to buy a new bottom bracket for my bike as the one on it now is the old type, halfords one is around £10 so what peddle sensor would I need in the picture is it the top left one? Sorry this is my first build so a bit of a novice at moment Thankyou.
Nearly all pedal sensors need a bit of a gap between the BB and pedal arm/chainwheel. Ideally, you need to install the Bb first to check the size of the gaps, then you can choose which side to install and which type of sensor.
 
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thelarkbox

Esteemed Pedelecer
Aug 23, 2023
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In the pic. 1st ( top left) is the default all in one sensor which you position snug up against the bottom bracket, the rest appear to be 2 part devices with a separate magnet ring and sensor,

the 2nd (top right) for right side installation has a sensor mounted on a steel plate you mount behind the securing ring for the bottom bracket with the magnet ring behind the chainring. the 'fingers that make the inner diameter are somewhat flexible.

the default sensor is the easiest/ simplest to fit and plug in, all others will require a lil positioning of the magnet ring to spin straight and within a mm or 2 of the sensor, (not hard just an extra step..)

A brand new generic bottom bracket should imho probably be suitable for the default #1 option, however ?? not in my case? while i tried to mod /cut/sand/grind the inner diameter of the sensor and failed!! others have taken an angle grinder to the axle and shaved off a bit of steel with better success.. ( that still puzzles me btw)

when you get the new bottom bracket just measure the axle diameter close to the bearing face if 16mm as in your pic above ( I pulled 17mm from memory in my above posts) the default #1 option will be fine. Its the default probably because it works most of the time. if bigger however the nominally more work to fit option #2 will work as in my case.
 
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detec52

Pedelecer
Jan 14, 2011
62
5
Well I spent a whole day trying to buy a bb tool went to both halfords that said on there Web site that they had them in stock, wrong, so I went to both our bike shops and no not a chance, no wonder people shop online, halfords run by silly kids playing on there phones, so I have ordered one from Ebay should be here next week then hopefully I can move on, I screwed the new bb into the right hand side by hand but can only get it in around 4 or 5 turns then it's very tight no crossed threads, is this normal. Thankyou.
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
8,043
3,681
Telford
Well I spent a whole day trying to buy a bb tool went to both halfords that said on there Web site that they had them in stock, wrong, so I went to both our bike shops and no not a chance, no wonder people shop online, halfords run by silly kids playing on there phones, so I have ordered one from Ebay should be here next week then hopefully I can move on, I screwed the new bb into the right hand side by hand but can only get it in around 4 or 5 turns then it's very tight no crossed threads, is this normal. Thankyou.
It's the crank puller that you need more than anything. I hope you got both, like these:
 

detec52

Pedelecer
Jan 14, 2011
62
5
Hi yes crank is off just could not locate a tool to screw the new bb on but have ordered one from Ebay now, so will order my wheel kit ect on Monday.
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
21,318
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West Sx RH
Clean the Bottom Bracket threads with a rag and some lubricant .
 
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Nealh

Esteemed Pedelecer
Aug 7, 2014
21,318
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West Sx RH
Looking at your linked pics in #8 which BB did you buy , the bottom right type or one of the other three cartridge ones which are the same type ?
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
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West Sx RH
Loose bearing type one refits the cluster then greases the race cup and then pops the bearings back in leaving a bearing space so they freely can rotate.

Again with anything a pic speeak volumes of what you have.
 
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thelarkbox

Esteemed Pedelecer
Aug 23, 2023
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A Yose_Power kit should come with a BB undo/redo? tool check the site..

Pics of the gear cassette/BB's would help too, it could be of one type as described above, or a murdered freewheel type ;)
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
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West Sx RH
A cartridge type , as said clean the BB threads both sides .
PAS type one will likely need the top right or bottom left type in #8, for less issues.
However if one has ordered the kit likely the V12L top left will be supplied.
 
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