Search found 197 matches

by Baron
Aug 06 2019 2:29pm
Forum: E-Bike Technical
Topic: A low-cost e-MTB Production log
Replies: 51
Views: 1955

Re: A low-cost e-MTB Production log

The front wheel looks like it might hit the battery box under full compression. Also, doesn't the bottom bracket height look a little low? Otherwise, great looking ride.
by Baron
Aug 02 2019 11:27pm
Forum: Items for Sale - New
Topic: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER
Replies: 828
Views: 105427

Re: Qulbix Q76R Frame Kits & Complete Bikes PRE-ORDER

I read through most of the thread but didn't see anyone post measurements of the frame. What are the inner dimensions of the Q76R frame?
by Baron
Apr 12 2019 6:59pm
Forum: E-Bike General Discussion
Topic: Qulbix Q140MD - any experience?
Replies: 180
Views: 11237

Re: Qulbix Q140MD - any experience?

I designed a simple CA mount. The one the bike came with just didn't look right and I had to take it off every time I had to flip the bike upside down.I printed it with a 3D printer with ABS at 90% infill. Engate, very nice. You should post that in the Qulbix general thread since it's probably comp...
by Baron
Apr 09 2019 6:02pm
Forum: E-Bike General Discussion
Topic: surron bicycle with qs205 middrive
Replies: 54
Views: 3575

Re: surron bicycle with qs205 middrive

Looks sweet, the pedals and motor look a little close to the ground tho. Do you mind sharing the alibaba link to the frame you bought?
by Baron
Apr 08 2019 10:48pm
Forum: Items for Sale - New
Topic: 1500W (35mm) V2 DD Hub Motor Group Buy *CLOSED*
Replies: 25
Views: 2282

Re: 1500W (35mm) V2 DD Hub Motor Group Buy by Teslanv $200 + Shipping

Baron, So you are using a 16s instead of a 20s battery pack now ? Going up any steep hills where you live ? What kind of speeds are you getting up to on flat ground ? I have a programmable controller so have tested 12s - 24s battery configurations. With the 4t motor in a 23.5" nominal wheel (17" mo...
by Baron
Apr 08 2019 3:03pm
Forum: E-Bike General Discussion
Topic: Qulbix Q140MD - any experience?
Replies: 180
Views: 11237

Re: Qulbix Q140MD - any experience?

This is probably my dream ebike frame, I need to move to mid mount but the noise and complication with setup like dealing with chains, rings, and different controllers makes it difficult. Even with a hub motor weighing just 16 lbs in the rear wheel, you can really feel it bogging down the rear suspe...
by Baron
Apr 06 2019 1:20am
Forum: Items for Sale - New
Topic: 1500W (35mm) V2 DD Hub Motor Group Buy *CLOSED*
Replies: 25
Views: 2282

Re: 1500W (35mm) V2 DD Hub Motor Group Buy by Teslanv $200 + Shipping

This motor is awesome, I have a 4T laced in a 17" moto wheel and it power wheelies my Kona Stinky at 72V 50A. Way more power than I need, and it handled the temperatures pretty well, ferrofluid helps. I think I've found the sweetspot at 64V 50A for mostly offroad riding. I think the 6T you're offeri...
by Baron
Jul 23 2018 11:11pm
Forum: E-Bike General Discussion
Topic: Accidentally left Cycle Analyst on overnight, drained my batteries to death?
Replies: 13
Views: 1000

Re: Accidentally left Cycle Analyst on overnight, drained my batteries to death?

I understand now, I guess that is the risk of running without a bms. Not a huge loss on my end, just around $120 worth of batteries. Lesson learned I suppose. Idea: would it be possible to wire the controller ignition wire to a CA3 so that it can switch the ignition off when you reach the configurab...
by Baron
Jul 23 2018 8:46pm
Forum: E-Bike General Discussion
Topic: Accidentally left Cycle Analyst on overnight, drained my batteries to death?
Replies: 13
Views: 1000

Accidentally left Cycle Analyst on overnight, drained my batteries to death?

Here's the situation: I rode my ebike over the weekend, used about 75% of the battery and then stored the bike away, but i forgot to unplug my battery / turn off the ignition to the controller, which left the Cycle Analyst screen on. When I checked the bike about 24 hours later, the screen was still...
by Baron
Jul 23 2018 4:20pm
Forum: E-Bike Non-hub Motor Drives
Topic: Carbon Fiber e bike with Bafang M 600 mid installed with throttle
Replies: 161
Views: 18310

Re: Carbon Fiber e bike with Bafang M 600 mid installed with throttle

I like the idea of the frame you just posted, It's probably a better idea to find a frame with the battery inside the triangle, not mounted inside the frame tube. This would open up a lot of different battery options for us DIYers. Following this thread with interest.
by Baron
Jul 19 2018 2:57pm
Forum: E-Bike Non-hub Motor Drives
Topic: Specialized Epic Expert FS Frame for HD1000
Replies: 41
Views: 2899

Re: Specialized Epic Expert FS Frame for HD1000

I don't think the bbshd can be mounted inside a triangle without a bit of modification. I think it could be done on certain frames by grinding away the frame tubes in the triangle near the BB just enough so the motor can fit, then reinforcing that part of the triangle with metal plates. Or do what t...
by Baron
Jul 15 2018 11:41pm
Forum: E-Bike General Discussion
Topic: Bike prices..... WTF?
Replies: 132
Views: 7155

Re: Bike prices..... WTF?

Not sure if it's been mentioned yet but I always find the best deals on pinkbike.com buy/sell, during the offseason around the winter months.
by Baron
Jul 09 2018 10:16pm
Forum: E-Bike Technical
Topic: Definitive Tests on the Heating and Cooling of Hub Motors
Replies: 2099
Views: 371307

Re: Definitive Tests on the Heating and Cooling of Hub Motors

I think I am gonna skip the screen/mesh altogether after thinking about it, it's really hard for rocks/debris to even get into the motor anyway and it's almost impossible to keep out dust or small particles that can gum up the ferrofluid since my motor is already vented. Thanks for the info.
by Baron
Jul 09 2018 12:23am
Forum: E-Bike Technical
Topic: Definitive Tests on the Heating and Cooling of Hub Motors
Replies: 2099
Views: 371307

Re: Definitive Tests on the Heating and Cooling of Hub Motors

I'm experimenting with adding ferrofluid to a vented/varnished hub. My goal is to add a mesh/screen over the holes, I mostly ride offroad so my concern is dirt getting into the motor and gumming up the ferrofluid. 1st pic below is my swiss cheese hub motor and 2nd pic is the proposed screen cover id...
by Baron
Jun 30 2018 12:47am
Forum: Battery Technology
Topic: Recommended charger for 12s, 4.1 per cell (49.2V)?
Replies: 10
Views: 697

Re: Recommended charger for 12s, 4.1 per cell (49.2V)?

Thanks all, I think I am going with the meanwell clone + battery medics solution. I also have an Imax b6 for balancing. https://endless-sphere.com/forums/viewtopic.php?f=14&t=75212 https://www.ebay.com/itm/110V-to-DC-48V-8-3A-400W-Volt-Transformer-Power-Supply-for-Led-Light-US-E6L4/302077749158?hash...
by Baron
Jun 28 2018 3:36am
Forum: Battery Technology
Topic: Help with variable voltage Charger
Replies: 7
Views: 1044

Re: Help with variable voltage Charger

Hey sorry to resurrect an old thread, but how much were you able to adjust the final voltage? I am looking to buy a similar charger, based on the pictures you posted it's identical inside and out. Say I wanted to charge both 12s and 16s lipo by adjusting VR2, would I be able to use a 12s labeled cha...
by Baron
Jun 27 2018 6:04pm
Forum: Battery Technology
Topic: Recommended charger for 12s, 4.1 per cell (49.2V)?
Replies: 10
Views: 697

Recommended charger for 12s, 4.1 per cell (49.2V)?

I'm looking for a charger for my 12s 48V 10Ah battery pack. I only want to charge to 4.1v per cell for better longevity, so 49.2V final voltage. Anyone know of a charger like this, or one I could modify to get the voltage I need? It's a lipo pack so I wouldn't mind higher charge rates, 5A or even up...
by Baron
Jun 27 2018 3:35am
Forum: E-Bike Non-hub Motor Drives
Topic: Carbon Fiber e bike with Bafang M 600 mid installed with throttle
Replies: 161
Views: 18310

Re: Carbon Fiber e bike with Bafang M 600 mid installed with throttle

Isn't the bafang ultra model number G510? Which model motor is the M600? I'm also looking for a frame for the bafang ultra that I can DIY build.
by Baron
Jun 16 2018 5:05pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1784
Views: 184984

Re: My Bafang Ultra Mountain Bike! Frey AM1000

Do you know the max amps you can safely program the controller to? and what the motor can safely handle. I vaguely remember the bbshd to be perfectly capable up to 40amps, but you might need an external controller for that? Looking at the lunacycle breakdown video, the ultra seems to be a good bit l...
by Baron
Jun 14 2018 2:05pm
Forum: E-Bike General Discussion
Topic: High Amperage BMS Reccomendation
Replies: 12
Views: 1917

Re: High Amperage BMS Reccomendation

you could split the battery into two 72V packs, each with their own BMS? which would cut the high amperage requirement in half
by Baron
Jun 13 2018 1:00am
Forum: Items for Sale - Used
Topic: SOLD
Replies: 7
Views: 745

Re: 72v 32a brushless controller (US)

is it sinewave?
how many fets?
what's the lvc?
by Baron
Jun 08 2018 11:29am
Forum: Battery Technology
Topic: Batteries - a better approach?
Replies: 6
Views: 813

Re: Batteries - a better approach?

So each battery pack is 5S3P? And they have their own internal BMS? Seems pretty good, depending on the price. But I don't see how this is any better than a purpose-built 15S e-bike battery, since these cordless powertool batteries are often sold at a premium.. How many battery amps are you running ...
by Baron
Jun 08 2018 11:14am
Forum: Items for Sale - New
Topic: 15/18F Silent Controller 36-150V BT-iOS-Android/GPS-$179-199
Replies: 882
Views: 107607

Re: 15/18F Silent Controller 36-150V BT-iOS-Android/GPS-$179-199

What motor do you use? I need absolute silence and reliability My PV controller and edge 1500w motor are absolutely silent. From hearing my friends ride my bike, I would say my chain/freewheel and knobby tires are louder on the road. Coming from slick tires previously, knobby mountain bike tires ac...
by Baron
Jun 08 2018 12:09am
Forum: Items for Sale - New
Topic: 15/18F Silent Controller 36-150V BT-iOS-Android/GPS-$179-199
Replies: 882
Views: 107607

Re: 15/18F Silent Controller 36-150V BT-iOS-Android/GPS-$179-199

Any way to add bluetooth/android programming to my controller? It's a 12fet btw.
by Baron
Jun 07 2018 11:28pm
Forum: Items for Sale - New
Topic: 15/18F Silent Controller 36-150V BT-iOS-Android/GPS-$179-199
Replies: 882
Views: 107607

Re: 15/18F Silent Controller 36-150V BT-iOS-Android/GPS-$179-199

Last year, using Windows 7 I was able to successfully program my controller using the old chinese software "Sine wave controller programming software." But now with Windows 10 I can't seem to make it work anymore. Does anyone know if it works at all using Windows 10? I think I'm having problems with...