Recent content by vax

Designing and testing the motor brackets. I'm using a laser cutter to make cardboard mockups first. After 3-rd iteration the motor plates fit perfectly so it's time to proceed to real parts. 3mm steel plates. Did first version of the battery box as well, 2mm aluminium case with 1mm separator...

I'm going to use identical LiPo batteries in parallel to have more Ah. 5S packs connected parallel both by power leads and balance leads. Let's say 6 batteries in parallel. Also I want to connect those 5S6P packs to series so I have 20S 6P pack overall and use Li-ion Daly BMS to manage it. It...

I'm gonna use the motors own bracket and mount it to the swingarm shaft. In addition, two 3mm lasercut steel plates on the end flanges of the motor, and distance bushings at the left side for chain clearance. The plates along with motor will form new lower part of the frame, so, the motor will...

Some progress, stripped the IC engine and accessories from the bike and tried the new stuff on. Looks like it fits quite nicely.

It's been long time since I posted updates here. I have been upgrading this bike, old 20ah LiFePO4 pack finally just wasn't good enough and also developed a lot of sag under the load. So I got crateful of "recycled" (thanks to my previous company) Samsung INR21700-50E cells, most of them almost...

I'm considering buying Daly BMS, would 250A model be sufficient? EM200 has 240A burst https://www.aliexpress.com/item/1005006067473354.html?spm=a2g0o.productlist.main.5.79e05ce29ciZ0f&algo_pvid=b2783b28-6be1-4e66-862b-e4dffb601826

Hello folks, I haven't been here for some time and this will be my KTM build thread. I purchased this bike 10 years ago or so, previous owner had blew the engine, removed cylinder and then stored the bike outside. Of course the rain did fill up the engine eventually and when I got the bike the...

It's gonna have traditional oil sump shared for primary transmission and gears. There's adaptor flange between motor and primary drive casing, with oil seal and additional bearing, so if you would want to use different motor, you would need just different flange. As stated before, I'm using...

Just made some progress designing it. I have CNC mill, but it has only 110mm of Z travel, so I cannot do very high parts. This design takes it into notice. I have an idea of cable-operated gear change - normal MTB brake lever on handlebar. The gears are spring loaded to 2-nd, but if you pull the...

And with fuel tank mock-up

A bit frame modelling:

Hello Is there any connector that contains 3 phase and 5 hall leads in one package? I've been using 3X Anderson powerpoles + sealed DIN5, but maybe there's a better product?

Well, I'm using standard moped gearbox. The whole gear set cost me 30€ and I can get more in large quantities if needed. The model is Delta RMR-24. There was box full of gearbox parts at local motorcycle shop.

Hi all I posted this to ES facebook page, but I guess its better to put it here also. I'm building my hybrid bike and one idea was to use 2-speed gearbox. Initially I wanted to use Babetta automatic gearbox, but the guy whom I was gonna buy it, acted like a fool and ruined my plans. So, next...

OK, here's the situation: I have older BionX hub motor kit on city bike for repair here. Initially the owner wanted to replace the battery, which was dead (0V). So, we ordered a new BionX battery for him, but that didn't bring the bike into life. Now, when I switch it on, the display starts...