Recent content by mwkeefer

Hello, Depending on the weight and wind resistance (mostly), combined with rolling resistance (minimal in most cases) the BBS02 750 can be geared for up to 30-35 mph but even geared for 35 mph using 48v @ 25a you will only see 88% of that (efficiency) which would be roughly max road speed of...

Hey guys, Is there a way to archive an entire thread with all pages in a single page on this php forum? I ask because as threads reach 50-100 pages they become very difficult to do a thread search or archive the thread for propesperity and to make sure its information is always available...

May I say this is one of the nicest Downtube style PVC 4x4 based enclosures I've seen so far, great work on all! -Mike

I have low cost USB->TTL adapters which work great with ControllerST software used to udpate the settings on the bafang controller (and most other with proper adapter you can make all yourself. -Mike

If the bafang was unplugged from power the caps may have held enough charge that the differental in voltage prevented the spark (rapid equalization of voltage). Sadly I have not yet figured out the CA plug wiring, someone may have. Worst case scenario, I should have a C961 LCD and one other...

Not sure if your looking for an Astro 3210 or 3220 but I have both and a Black Recumpence MS-eDrive complete setup. I even have an HV 120 ICE for the setup - The reduction of the v4 is 4:1 but the slipper clutch makes all the different. Geared properly (say 37mph theoretical top speed) you...

No you just need to have the Controller ST and copy corresponding to your setup however don't write if your not sure... v4 is for v4 drive and don't hate the US vendors most aren't hip to this either, not their faults... just a backlog of the v2 and v3 units lower volume vendors have been...

Hello all, Believe me or not and forgive me if this is a repost of information but I frequently speak with Vendors (Both friends and clients) so in addition I speak with many Chinese attempting to procure the best revisions of everything and to at minimum ensure we don't get a version with a...

Okay so to the crank (chainring) you have sufficient reduction for 12S 7500 RPM down to 75 RPM (theoretical) RPM... which wind is your 3205? What kV? On that note, it should work well enough but... I caution you not to push too much power into the cyclone gearbox... maybe 1.5X and perhaps 2.0...

Okay I'll spell it out. 12S @ 3205 = 7500 rpmi Sorry between the 3205 axle and the gearbox + final drive ratio output you need an additional 70-75:1 reduction for 100 rpm cadence. -Mike -Mike

I wouldn't push the Bafang past 55.5 or 61.2v maximum input voltage without cutting the current back signifiigantly. Even still the gearing may not appreciate the speed you want to run it at. Just food for thought, be careful. PS: You don't need to remove any of the stock controller, just...

What is the total reduction of the gearbox your intending for use with the 3205? What is the output gear and the driven sprocket/gear on the freewheeling cranks? My concern is cyclone motors run about 3K RPM and for the 32XX series Astro motors they need to maintain about 7500 for 90-94%...

Apparently my last post was in poor taste, I was only trying to offer some beta versions at cost to those in the thread. If you are interested in helping, PM me for details on how - if you want demo units to test, same deal - PM me. Once the design is fully fleshed out, and ready for...

While you have a point, it's only because there aren't many us vendors with sufficient mechanical engineering to sell you kit, pack and proper chainring and freewheel or cassette to set you up. None of the Chinese vendors can do this and ice dealt with my fair share of our right dishonest China...

Neo, too late I've disassembked the Parameter Designer vb6 app... This was just before XPD became available so other than giving useable names to variables and one or two other changes it was abandoned. Your welcome to the code and my serial io library which is to replace mscomm32.ocx. -Mike...