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by Offroader
Oct 15 2020 2:54am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

@Offroader Is this how you drive around every day or was it just a picture after installation of the nucular (not nuclear :D ) controller? I know it's a matter of taste but having the cables sticking out like this ruins the whole (closed) look of the bike in my opinion. And of course the protection...
by Offroader
Oct 15 2020 2:41am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

That video is really great discussing these things, especially the offset which is very high on the 27.5" fox fork. Normally 27.5" forks have a greater offset than 26" forks, but the fox 27.5" 40 forks had a really high offset. What is interesting is what this guy says in the vid...
by Offroader
Oct 15 2020 2:16am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

First, please explain how a twist throttle helps you ride more difficult trails than a thumb throttle? I already went through this, the thumb throttle is superior because your hand has a firm grip on the handlebar, giving you precise throttle control at all speeds of riding while covering the brakes...
by Offroader
Oct 14 2020 11:13am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

I do know many guys use 27.5" forks but I don't think they are pushing the bike extremely hard off-road and are not as sensitive as I am to the handling. Please. I have hucked mine off some pretty big drops. I'll see if I can find some pics Just to clarify things with this. I'm not talking abo...
by Offroader
Oct 14 2020 10:50am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

I wonder if maybe thermal pasting the Nuc 24f case to the plate inside the stock housing would help? The FETs in the Nuc are sitting on the two sidewalls so I guess this wouldn't help much. With the stock battery I had no problems at all with heat. But with peaks of nearly 21kw the 24F starts sweat...
by Offroader
Oct 12 2020 3:09pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

I wonder how many guys here have been running the nuclear 24fet? I surprisingly don't really see many people using them here or posting about them. I've been using mine for a while now, the whole summer, but I got on the pre-order like the first week they started it. You will notice a greatly improv...
by Offroader
Oct 11 2020 6:23pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

I may try that wood fix. The rim is probably bent in the middle also because the spoke was a bit loose right at the bend. Surprisingly the bike drives smooth and I can't tell the rim is bent. I've hit so many things, and some things I didn't see in the grass that were really big. I also hit some thi...
by Offroader
Oct 11 2020 11:39am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

Look what I found, I will probably have to replace the whole rim. I am not sure what I hit to do that.

The odd thing is I don't feel it when I am riding.

Image
by Offroader
Sep 06 2020 9:57am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

Made this video of a ride I did in my city split into a few parts. Shows how many things you can do with Sur Ron in a large urban city.
Video was from a bar mounted dash cam Git G3, that is set to record every time I turn on my bike.

by Offroader
Sep 04 2020 12:25pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

The question is, what would I improve on the bike with a new model? I think the only thing I can think to improve is designing the frame and geometry around 27.5" forks and 19" motorcycle tires. Unfortunately you can't get quality 26" forks anymore as they are obsolete, everything is ...
by Offroader
Sep 04 2020 12:12pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

The Sur-ron is just an amazing bike, and I'm sorry to say this may be as good as it will ever get for a performance ebike. Every time I ride this bike I'm blown away by how great it is. I of course did some minor modifications, new fork, new controller, new handlebar, new rear wheel, new brakes, thu...
by Offroader
Aug 31 2020 5:38pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

This should be really easy to troubleshoot and pinpoint if its the motor, battery, or controller, or throttle. Any suggestions on how I would go about doing this? Sorry no IBS will touch this bike. The moment that they hear that its an ebike I get a dial-tone I would try and find someone within dri...
by Offroader
Aug 30 2020 6:02pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

After having taken the motor apart, my recommendation is to not mess with the motor unless you have to. Even that center cap to get to the halls, I wouldn't mess with it if the halls tests fine at the connector. This should be really easy to troubleshoot and pinpoint if its the motor, battery, or co...
by Offroader
Aug 28 2020 8:36am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

Can't you test the hall sensors from the connector? Why even bother trying to remove that small plastic center piece on the motor?

I wasn't able to get that little side cover off, I didn't try very hard but it is really in their tight and you will probably gouge the plastic in the process?
by Offroader
Aug 10 2020 7:05pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

I figured out the issue. The ground wire I used was actually the Positive 12volt wire. I connected to the +67 volt wire and the +12 volt wire. I actually got voltage from this because there was a 12,500 ohm connection from +12 volts to ground. This was enough to power my DC/DC converter even though ...
by Offroader
Aug 10 2020 1:31pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

With further testing the issue comes from the negative wire and not the positive. I'm not sure where the negative wire connects to. I may just connect directly to the battery with the negative and keep the positive connected to the connector this way the key will turn on/off my 2nd dc/dc converter. ...
by Offroader
Aug 09 2020 3:45pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

Any idea anyone? The battery voltage (68 volts) going to the sur-ron DC/DC converter, that which I tapped into the wires, seems to voltage sag with very little load. These are 2 smaller wires and the 68 volts (battery voltage) goes on and off when you turn the sur-ron key. Basically just the sur-ron...
by Offroader
Aug 07 2020 12:14am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

Was out last night testing out my lights. Unfortunately it seems my power supply has issues as I can't draw more than 7 amps before it has a huge quick drop in voltage and eventually turns my lights off. I have to limit the lights power.

by Offroader
Aug 07 2020 12:12am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

looks good offroader, its amazing how much time it takes to figure out how to retrofit stuff. With your controller, does it do auto detect for all the motor settings? Does it list what settings it detected? I ask because my controller asks for the user to input the settings and i don't know what va...
by Offroader
Aug 03 2020 9:35pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

Finally built a case for my LED lights DC/DC converter. Milled from a piece of acrylic plastic. I installed it next to the sur-ron dc/dc converter because I removed the twist throttle device for a thumb throttle. This wasn't an easy job and took me an embarrassingly long time to make. I wanted it to...
by Offroader
Aug 02 2020 3:35pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

This is good that the motor keeps such low temps. This means you can safely up the power to probably around 8KW maybe more and still be able to ride the bike as hard as you can in 100F ambient temps without worry of overheating. You could also run the bike with overdrive on the highway for a long ti...
by Offroader
Aug 01 2020 4:12pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

Finally rode my bike with the new KTY 84 temp probe. Highest I could get the motor was 72C-74C. It mostly stayed around 65C-70C. This is with 88F outside air. This is also using 90 amps x battery voltage with a Nuclear 24 fet controller. I checked the case temp with an infared thermometer, when the ...
by Offroader
Jul 30 2020 10:30pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

You used a pry bar to add more tension then the tension caused by the weight of the motor? If you loosen all the bolts the motor will fall down and that I find is too much tension.

Did you use anti seize on any of the bolts going into the motor? The bolts are steel going into the aluminum motor.
by Offroader
Jul 30 2020 12:18am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

Having difficulty with the belt tension when putting the motor back. First, I'm not sure what it should feel like so that doesn't help anything. I forgot to check the tension before I removed the motor :x . The other issue is its hard to make fine adjustments to the belt tension because you have to ...
by Offroader
Jul 29 2020 10:19am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5243
Views: 577254

Re: Sur-Ron - New Mid drive Bike

The thing that worries me is even though the nuclear controller is only pushing 90 amps X battery stock voltage, the controller seems to have more field weakening, which is notorious for overheating motors. The controller also seems to be more aggressive with how it sends power to the motor which me...