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WD-40 works great for intended uses, I use it to clean metal surfaces, to keep my o-ring chain's from rusting, and as a light duty lubricant. DOT fluid stores just fine, I put the opened bottle in a Ziploc bag and pull a vacuum on it. Lots of cars sit for multiple years and the brakes still...

Check all the battery cable connections, if it still won't charge remove the battery and charge with the adapter. It it won't charge out of the frame the battery has an issue and will need warranty. I know some brands using 3rd party batteries have had connection issues with battery terminals...

I always lightly grease, but it's to keep away corrosion not lubricant anything. I don't think the grease was causing the independent play on your cassette, more likely the lock nut was loose.

My polygon came in a box, what's up with the shrink wrap and pallet?

I noticed that the battery cover on my Collosus N8e is rubbing the frame, it's made it through the paint on some of the scratches. I added paint protection film to see if it helps, but was wondering if this happens on other bikes as well?

These are probably pulse width modulated DC motors. OP, It might be because it's sensing you speed up and slow down on the cranking. Take it to a shop and have them add 1/4 or 1/2 second of overrun and see if it goes away.

What's your cadence when you're feeling it?

Ignore and move on, they'll all be on ebikes at some point. Like when the first cars, automatic transmissions, power tools, ect. There's always people stuck in the past. I waited 10 years before getting a 29er, never gave people shit for riding them though.

I updated mine in like 5 minutes?

Before replacement you may try cleaning the balls and adding fresh grease. Most swingarm bearings on bikes would last a long time if periodically greased.

I've updated without issue, just don't walk away or disconnect your phone while pushing the update.

My ep801 just stops assisting at 20 mph, I don't feel motor drag, just the added torque stops. I ride quite a bit with the assist turned off to warm up and it's no where near as bad as I thought a 56lbs bike would be. It also makes you appreciate the assistance more after a climb without it 😂.

Just wondering what others usually hit for climbing and just general cadence. Riding a trail with lots of steep, rooty, and rocky climbs that I was getting hung up a lot. I accidentally double downshifted and ended up climbing at ~120rpm's. This was like unlocking another mode on my bike in...

I've had my EP801 powered Polygon Collosus n8e for four months now and have ridden everything from flat xc trails, black diamond rocky/rooty hills, and man made jump lines. Short bike review, it's awesome. Very stable on the down hills, playfully maneuverable in the twisties, maintains traction...

Just need to make the motors oil bath and have a yearly oil change interval. PCB 's sealed with silicone like automotive control modules, even high end roof top HVAC equipment PCB's have a sealant on them nowadays. The bearings would last thousands of miles and probably the useful life span of...

I thought this only happened to Shimano motors 😂...

When I got my N8e I took it to my parents house to build because we had an event that weekend. I forgot my pump so I used my brothers little frame mounted pump. I thought I had 28-30psi in my MM's on that first ride, worked great! Got home and checked with my gauge pump and both were about...

I bought some paint protection film off Amazon for pretty cheap. 2inch (50mm) and 4 inch (100mm) would work for most bikes, it's pretty easy to apply as well. This would add some protection from scrapes and scuffs, and doesn't look too bad either. Attached is a picture from me applying it, next...

Parts availability is an issue, but some of the higher wear items like bearings or seals can be bought at any bearing supplier. I've repair lots of circuit boards that just had some electrolysis because they got wet. A brass brush and electronic cleaner got my kids stacyc going after he crashed...

My ep801 doesn't have a rattle, it's completely silent, and it's got 85nm of power which is plenty for me. Ep801 rattle test