Search found 75 matches

by Bullfrog
Sep 08 2018 7:04am
Forum: E-Bike General Discussion
Topic: Kelly vs Sabvoton Controller review 2017
Replies: 40
Views: 5171

Re: Kelly vs Sabvoton Controller review 2017

Does anybody know if the Sabvoton Controllers are Sine Wave or FOC? FOC is just a type of Sine Wave controller that gets its timing information differently than a traditional Sine Wave Controller. My electronics understanding is quite limited but I am progressing slowly....the Kelly should have more...
by Bullfrog
Aug 17 2018 1:59pm
Forum: E-Bike Non-hub Motor Drives
Topic: My next e-bike build - BBSHD with hydraulic IGH
Replies: 66
Views: 14462

Re: My next e-bike build - BBSHD with hydraulic IGH

Well IMO they both have advantages and disadvantages....when the popularity of the modular motor increases a little, parts should eventually be more available than the current BBSHD, but for now it is going to be tough to beat the BBSHD for the availability of hop up parts and the price of replaceme...
by Bullfrog
Jul 30 2018 9:21am
Forum: E-Bike Non-hub Motor Drives
Topic: My next e-bike build - BBSHD with hydraulic IGH
Replies: 66
Views: 14462

Re: My next e-bike build - BBSHD with hydraulic IGH

If anyone is concerned about heat, a pic of a temp indicating strip I bought from Wahl is posted at the bottom of this post. I tried to put one directly on top of where the FETs mount in the right hand motor cover and I put one on the left side as well. With the stock 30A controller the 110F did not...
by Bullfrog
Jul 30 2018 8:57am
Forum: E-Bike Non-hub Motor Drives
Topic: My next e-bike build - BBSHD with hydraulic IGH
Replies: 66
Views: 14462

Re: My next e-bike build - BBSHD with hydraulic IGH

TorEddy...how did the Lightning Rod compare to your BBSHD and what wattage were you pushing thru them? I agree 100% on the cleanliness of the BBSHD installation plus with the controller internal, it is protected. Saw another pic you posted that was priceless...looks like you have a future Electrical...
by Bullfrog
Jul 29 2018 12:46pm
Forum: E-Bike Non-hub Motor Drives
Topic: My next e-bike build - BBSHD with hydraulic IGH
Replies: 66
Views: 14462

Re: My next e-bike build - BBSHD with hydraulic IGH

I don't have any personal experience with them but the Lightning Rod (small block and big block) appear to be a well designed set up. I have communicated with the owner a few times and he seems pretty sharp as well as helpful. If I wanted more power than my BBSHD can deliver, I'd take a serious look...
by Bullfrog
Jul 27 2018 8:27am
Forum: E-Bike Non-hub Motor Drives
Topic: My next e-bike build - BBSHD with hydraulic IGH
Replies: 66
Views: 14462

Re: My next e-bike build - BBSHD with hydraulic IGH

TorEddy...now that is one nice looking bike/build and I agree with your comment about the build being as much fun as riding. All this talk about shifting...I don't shift at all. 99% of my riding is off road so that is a factor that you have to take into account. Since an electric motor produces max ...
by Bullfrog
May 30 2018 4:35pm
Forum: Motor Technology
Topic: Geared motor on tough off-road terrain - wrong choice?
Replies: 71
Views: 5192

Re: Geared motor on tough off-road terrain - wrong choice?

Yes I know I am a late arrival to the party but passing along some personal experience.... I started with a MAC internally geared hub motor because I wanted to ride off road and climb hills...bad idea. You can't get it geared low enough to keep it from overheating...and that is the same for a DD mot...
by Bullfrog
May 20 2018 7:41pm
Forum: E-Bike Non-hub Motor Drives
Topic: Bafang BBSHD, 1000W, 68mm-120mm BB
Replies: 432
Views: 75285

Re: Bafang BBSHD, 1000W, 68mm-120mm BB

endrew...excellent question. I forget everybody doesn't have the exact same set up as me. You need a display that shows the wattage or amperage...with the DCP14 color display that EM3ev sells you can select wattage or amperage. I believe most of the black and white displays just have a bar graph wit...
by Bullfrog
May 19 2018 9:48am
Forum: E-Bike Non-hub Motor Drives
Topic: Gearing a Bafang BBSHD Top Speed and Off Road
Replies: 0
Views: 413

Gearing a Bafang BBSHD Top Speed and Off Road

Hopefully this will help you figure out what gearing works best for you. Below is my experience with gearing a Bafang BBSHD. I am running a BBSHD on a 14s6p battery (58.8v fully charged) with a rear tire that has an outside diameter (OD) = 725mm (28.5 inches). I have a 28 tooth front chainring and t...
by Bullfrog
May 19 2018 9:04am
Forum: E-Bike Non-hub Motor Drives
Topic: Bafang BBSHD, 1000W, 68mm-120mm BB
Replies: 432
Views: 75285

Re: Bafang BBSHD, 1000W, 68mm-120mm BB

Yes, I know this is an old thread but wanted to throw out a little helpful advice. Probably going to start a new one with a title like "Gearing a Bafang BBSHD Top Speed and Off Road"...just so it shows up when somebody is searching for gearing info. When people are talking about gearing they need to...
by Bullfrog
Apr 20 2018 4:02pm
Forum: E-Bike General Discussion
Topic: Best donor frame to build an electric bike & getting started
Replies: 42
Views: 4173

Re: Best donor frame to build an electric bike & getting started

LATE BREAKING NEWS AND WHY NOT TO USE A FAT TIRE BIKE FRAME ...well at least one with 190 mm Over Locknut Dimension (OLD)/ rear spacing. I stick with my recommendation on the Mongoose Terrex for two main reasons.... 1. The frame is steel and very strong. 2. Mongoose has been very helpful and wonder...
by Bullfrog
Apr 18 2018 3:18pm
Forum: E-Bike General Discussion
Topic: Adjusting Mechanical Disc Brakes
Replies: 5
Views: 305

Re: Adjusting Mechanical Disc Brakes

Chalo...excellent point, very true, and good advice on how to avoid the problem.

Your description is exactly what I do...after figuring it out by trial and error, lots of error :D .

Thank You
by Bullfrog
Apr 18 2018 11:26am
Forum: E-Bike General Discussion
Topic: Adjusting Mechanical Disc Brakes
Replies: 5
Views: 305

Re: Adjusting Mechanical Disc Brakes

Thought I should post the "Correct" way to adjust brakes...my advice in the first post is what works for me and my cable operated disc brakes but before you try it you should know the accepted way to do things. For Hydraulic disc brakes...Park Tools has some good instructions: https://www.parktool.c...
by Bullfrog
Apr 15 2018 4:54pm
Forum: General Discussion
Topic: BBSHD and Sturmey Archer S2K 2 Speed Kick Shift Disc Brake Rear Hub
Replies: 4
Views: 354

Re: BBSHD and Sturmey Archer S2K 2 Speed Kick Shift Disc Brake Rear Hub

Chalo...tell me a little about the TSDZ2, please. Is it about the same power level as the BBS02? I am going to consult Mr. Google as well. EDIT...found this on the TSDZ2: https://www.biktrix.com/products/tongsheng-tsdz2-torque-sensored-diy-ebike-mid-motor Says that it is a pure pedal assist, no thro...
by Bullfrog
Apr 15 2018 2:37pm
Forum: General Discussion
Topic: BBSHD and Sturmey Archer S2K 2 Speed Kick Shift Disc Brake Rear Hub
Replies: 4
Views: 354

Re: BBSHD and Sturmey Archer S2K 2 Speed Kick Shift Disc Brake Rear Hub

gogo...THANK YOU. There is no easy way I can think of to move the chain backwards to activate the kick shift. Just when I thought I had a good idea....oh well. At least I have a back up plan...go with a 3 speed Sturmey Archer hub, the one that accepts a disc brake and has a 9 spline driver so I can ...
by Bullfrog
Apr 15 2018 11:07am
Forum: General Discussion
Topic: BBSHD and Sturmey Archer S2K 2 Speed Kick Shift Disc Brake Rear Hub
Replies: 4
Views: 354

BBSHD and Sturmey Archer S2K 2 Speed Kick Shift Disc Brake Rear Hub

Does anybody have experience with the Sturmey Archer S2K 2 Speed Kick Shift Disc Brake Rear Hub? Or more precisely, has anybody tried it with a BBSHD? Any words of wisdom, advice, experiences, etc....would be greatly appreciated. I am considering doing a build with a BBSHD, a Bikes Direct bike with ...
by Bullfrog
Apr 15 2018 11:03am
Forum: General Discussion
Topic: BBSHD and Sturmey Archer S2K 2 Speed Kick Shift Disc Brake Rear Hub
Replies: 1
Views: 285

BBSHD and Sturmey Archer S2K 2 Speed Kick Shift Disc Brake Rear Hub

Does anybody have experience with the Sturmey Archer S2K 2 Speed Kick Shift Disc Brake Rear Hub? Or more precisely, has anybody tried it with a BBSHD? Any words of wisdom, advice, experiences, etc....would be greatly appreciated. I am considering doing a build with a BBSHD, a Bikes Direct bike with ...
by Bullfrog
Apr 12 2018 11:28am
Forum: E-Bike General Discussion
Topic: Huffy Fortress 3.0 half fat tire bike.
Replies: 18
Views: 3562

Re: Huffy Fortress 3.0 half fat tire bike.

May be too late for me to influence your decisions but the Mongoose Terrex is a good choice to start a build with....steel frame, disc brakes front and rear, accepts 3.0" wide tires. Most big box store bikes are dangerous if you use them for an ebike build. There are better bikes but none better for...
by Bullfrog
Apr 11 2018 5:00pm
Forum: E-Bike General Discussion
Topic: Best donor frame to build an electric bike & getting started
Replies: 42
Views: 4173

Re: Best donor frame to build an electric bike & getting started

Please don't misunderstand my wording and intent....I just want to share what I did and if anyone would like to copy it or learn from it then great. If you want to do something totally different, that is up to you and fine with me. The only mistake I feel like I made along the way was selecting a MA...
by Bullfrog
Apr 11 2018 11:58am
Forum: E-Bike General Discussion
Topic: Best donor frame to build an electric bike & getting started
Replies: 42
Views: 4173

Re: Best donor frame to build an electric bike & getting sta

...but will I be able to go 50mph? :wink: Heck yea. 50 mph is a piece of cake...right after I drive off a cliff :D . Actually the MAC powered Terrex with the original 27.5" wheel and a 14s battery fully charged to 58.8v will do an honest 34 mph on flat ground with no wind and me laying almost horiz...
by Bullfrog
Apr 11 2018 11:49am
Forum: E-Bike General Discussion
Topic: Best donor frame to build an electric bike & getting started
Replies: 42
Views: 4173

Re: Best donor frame to build an electric bike & getting started

There is no best or, there might be a best for yourself, until you find better. Different builders have very different requirements. Riders are riding very different terrain, distances, conditions, speed... Best for one, may be the worst to another. Agree...BUT for getting started and building your...
by Bullfrog
Apr 10 2018 1:41pm
Forum: E-Bike General Discussion
Topic: Adjusting Mechanical Disc Brakes
Replies: 5
Views: 305

Re: Adjusting Mechanical Disc Brakes

efMX....the procedure you posted is what is recommended in my owners manual and it truly does center the disc in the caliper. My sincere thanks for posting the info on how to properly do it. On my brakes, they seem to work a little better if the gap between the inside pad and the rotor is a little l...
by Bullfrog
Apr 10 2018 12:36pm
Forum: E-Bike General Discussion
Topic: Adjusting Mechanical Disc Brakes
Replies: 5
Views: 305

Adjusting Mechanical Disc Brakes

Mechanical cable operated disc brakes can work fairly well if you keep them adjusted properly. Below is the procedure I follow to keep mine as tight as possible without dragging. This is mainly for relatively inexpensive cable operated brakes. Some of the higher end mechanical disc brakes like the A...
by Bullfrog
Apr 10 2018 12:16pm
Forum: E-Bike General Discussion
Topic: Best donor frame to build an electric bike & getting started
Replies: 42
Views: 4173

Re: Best donor frame to build an electric bike & getting started

Well the Mongoose Hitch is working great but I readily admit that in the long run most people will want to upgrade the components. The frame is rock solid and I have had absolutely no problems with the steel frame...below is a list of things I have changed and things that have stayed stock: A. Frame...
by Bullfrog
Apr 09 2018 10:17am
Forum: Motor Technology
Topic: Sine VS Square wave efficancy?
Replies: 50
Views: 9394

Re: Sine VS Square wave efficancy?

Here is a simple explanation that hopefully everyone can understand. A. Trapezoidal commutation generates torque ripples at low speeds and is relatively efficient in the high speed range. Noise takes energy to make and the louder it is the less efficient it is. Trapezoidal control is relatively simp...