Recent content by cozy35

Folks, I need some help/pointers. I need to make a UPS for a load of 8.4V at max 8A. So I am figuring I could use a 2S3P 18650 setup to supply the 8A demand at 8.4V being held at optimum voltage from a AC to DC PSU of 10A and a buck converter for the constant 8.4VDC connected to the BMS. The...

The problem is that chain-wheels come in different tooth numbers and one chain link can really mess with chain slop. The BB brace is to adjustable to take up any excess slop.

Indeed a 3d printed temporary part. It is a fitment test for a carbon fiber cover to enclose the bolts and ring-gear. Basically just to tidy up the box assembly.

Since the motor will mount directly to the input side of the box which is also aluminum it should act as additional heat sinking material. I am planning a centrifugal fan to draw cooling air through the stators and this should also aid in cooling.

The latest parts and temporary assembly of the gearbox. The assembled Box weighs 1178 grams and the APS 8055 motor adds another 1100 grams.

The latest rendering so long.

OK, so I am waiting for admin to reset my password and change user e-mail. Somehow I cannot login from my phone to post pics. I will be out of town until Saturday. Taking a road trip to Hakskeen Pan where the current tests are underway of the Bloodhound for next years land speed record. This is...

Yes, after quite a long busy work schedule. I have just last week received the cnc machined parts and also the VESC 100A controller. I have now been waiting 6 weeks for the APS8055 Motors. It is taking so long because of the reworked shaft to suit my needs. Once I get the Motors in hand I can...

Is anyone using or have experience with the Vedder ESC as supplied by MayTech in a sealed aluminum case? I ask because I would like to know how sealed it is and will it be okay in wet muddy weather in and e-bike. They claim it is sealed, but I just received mine and it appears not to be fully...

I have been very busy lately with increased business demands and I also purchased and assembled my own 3D printer to alleviate my dependency on others for concept pre-cnc parts. My printer is up and running and the first test print proved comparable with many other commercially available...

That would work, but since I am using off the shelf gear sets and is not available.

Ha ha ha..., hence the version V1.0 inclusion. I should have said V1.0 done for now.! It never ends.

I think I am done now with the version 1.0 of the 4500W Mid Drive System. Specifications: 4500W Alien Power Systems APS 8050 Out Runner (50KV) Two Stage Planetary Reduction Drive. - Stage one is 4:1 - Stage two is 3:1 (Optional can be 4:1) for a 16: reduction - Total of 12:1 on the output...

Tomorrow the laser and water jet cutting order will be placed. I am sure I am close to the stage of conclusion of the initial version 1.0 design. (not that it ever ends) The mount design are done and I will post some pics later. The real challenge now is to make these universal for all the...

I read up some more about the HMPE webbing and I stand corrected that this is Polypropylene? I was incorrectly under the impression that Polyester webbing is superior to Polypropylene. Googling HMPE did not really produce any results, unlike "Dyneema"! I actually have loads of this stuff in 1"...