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9c hub in 26" rim super slow wind with temp sensor

Posted: May 23 2020 11:10am
by DanGT86
Hello

This has been sitting around too long so I should probably sell it. Its in awesome condition and has very little use on it. Its always been stored inside. Its the slowest winding that I know of at 12 turns. Its perfect for a cargo bike or a low speed cruiser. If you have a high voltage setup like 20s you can get respectable power from this with a very cheap low amp controller. I had it paired with a 9Fet Lyen at 30amps and it always stayed nice and cool.

9 continent motor. I believe its from around 2012-2014
12x6 winding. Super slow approx 4.5kv. In the 26" wheel it will do 25mph on 80v
insides have been sprayed with boeshield corrosion inhibitor
10k ntc temp sensor added to the windings for temp monitoring
Rim is a sun rhyno lite 26"
spokes are Sapim 13/14g single butted with Sapim polyax brass nipples from Holmes hobbies
I built the wheel myself and have put at most 500miles on it. I used a park tool tension gauge and the spokes were re-tensioned after the first few rides so the wheel has been properly stressed and will need no attention unless you hit something. I'm a machinist and am super particular about things like this so lots of care was taken when building the wheel.

I'd like $180+shipping which would be about $30-40 within the US. With a used Maxxis hookworm 2.5" wide tire I'd like to get $205+shipping.

It's in Saint Louis Missouri.
9c front view.jpg
9c front view.jpg (179.98 KiB) Viewed 649 times
9c connector view.jpg
9c connector view.jpg (136.6 KiB) Viewed 649 times
9c rim.jpg
9c rim.jpg (164.03 KiB) Viewed 649 times

Re: 9c hub in 26" rim super slow wind with temp sensor

Posted: May 30 2020 8:43am
by unklegrumpknee
Is it front or rear?

Re: 9c hub in 26" rim super slow wind with temp sensor

Posted: May 30 2020 9:01am
by DanGT86
Rear.

Cant believe I forgot to say that in there. Sorry.

Re: 9c hub in 26" rim super slow wind with temp sensor

Posted: May 30 2020 10:16am
by torker
I have 2 of these winds. Older ones. Love them . My 20 inch build runs 15 mph at 48 v. The 26 inches runs the same at 36v :bigthumb:

Re: 9c hub in 26" rim super slow wind with temp sensor

Posted: May 30 2020 12:35pm
by DanGT86
Its from the old days when controller choices were more limited and all the hubs had small phase wires. Over volting was the easiest way to get big power with little money. As long as you are not trying to go 35mph I still think this is the best way to have a powerful bike with a $40 controller smaller battery and small wires.

I just dont need it in my fleet and there are other odds and ends I'd like to buy.

Re: 9c hub in 26" rim super slow wind with temp sensor

Posted: Sep 09 2020 4:33pm
by DanGT86
Price drop
$180 plus shipping
$205 plus shipping with tire

Re: 9c hub in 26" rim super slow wind with temp sensor

Posted: Sep 15 2020 2:51am
by Chrisheuer
Hi you’ve got my interest here in Columbia mo. The problem is I’m kInd of a newbie but have been getting up to speed on the forum and grin videos. I’ve got 2 potential builds I’m thinking this might work for one is a front load trike the other is a lugged Nashbar 80’s mt bike. The situation is I’m a big guy 6’3” 290 and older 65 with a lot of bike riding experience. I’ve got a fair amount of bike mechanic skill. What caught my attention is the slow and the powerful. The Nashbar bike I’m looking to just cruise the Columbia rural roads and bike trails. I would need help picking a controller ,charger etc do you think this motor could work for my situation??

Re: 9c hub in 26" rim super slow wind with temp sensor

Posted: Sep 15 2020 12:10pm
by DanGT86
Possibly a good fit depending on how fast you want to go. Being a direct drive slow motor it will run with pretty much any controller on the market. With the more common 52v battery packs available right off the shelf you'd be looking at a top speed of about 15-18mph. If you run a higher voltage pack like 75v you can get into the 25mph range which seems much more common for ebikes. Cruising at 15 on flat ground would feel a bit slow in my opinion. Being new at ebikes I cant really recommend you jump right into custom batteries but I don't know your technical background.

If you matched this to a cheap $50-100 9Fet controller using a 20s pack and a CA3 to monitor temps you could get short peaks of around 2500-3000watts and have an efficient setup for 20ish mph cruising. To me that sounds like the perfect bike for a heavier rider or a cargo bike.

Re: 9c hub in 26" rim super slow wind with temp sensor

Posted: Sep 15 2020 9:39pm
by Chrisheuer
So 20s pack refers to a higher volt battery like 72 volt. Is that what you ran it with.


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Re: 9c hub in 26" rim super slow wind with temp sensor

Posted: Sep 15 2020 10:27pm
by DanGT86
Yes. By 20s I mean 20 cells in series. Since almost everyone is using li-ion cells that are fully charged at 4.2v each then 20s is 84v full and about 74v avg.

Thats what I was using this motor with. When ebiking I prefer to cruise at around 20-25mph. Any slower than that and I'll just take a non electric bike. For me its more like light motorcycling.