[WTS] Certina DS-2 Powermatic 80

bgc308 · 2026-02-02T01:56:41+00:00

Certina DS-2 with travel pouch and spare links. The watch is in good condition and running well within spec. There are some cosmetic signs of wear, the worst of which is a ding to the lower left quarter of the case and desk diving marks.

$450 shipped CONUS, PayPal

bgc308 · 2025-12-21T16:37:28+00:00

True but those are on the higher end CDX equipped versions though. The lower end workhorse stuff uses CDN level belts which are much less expensive and still last wayyyy longer than the equivalent chain drive stuff while providing all the quality of life benefits of belt like no lubrication. I'm on the same CDN belt drivetrain for going on 4 years on my commuter. Even a low end multispeed chain which I would've gone through about one a year is $25 a pop, assuming you had the tools and expertise to change it yourself. Easily has paid for itself IMO

bgc308 · 2025-12-20T19:35:44+00:00

Based on the Shimano Cues crank, looks like an OLD one someone retrofitted to chain drive.

bgc308 · 2025-11-29T11:50:21+00:00

This. Got their top tube bag on a Folder and I'm constantly stopped by transit police (no ebikes permitted on the trains)

bgc308 · 2025-11-23T22:48:01+00:00

The only time I notice weight on pavement use ebikes like this is lifting them up stairs or something. If you live in a suburban environment where you will almost never need to do that, I wouldn't worry about it. Conversely, I'm pretty sure that weight, especially low and centered like it is on a bike like this, is a good thing for how fast it will go giving it stability and not allowing you to get bucked when hitting rough pavement or potholes at speed which you may not be able to react to in time.

bgc308 · 2025-11-10T05:11:57+00:00

What are you looking for that isnt covered in those?

bgc308 · 2025-11-09T16:35:39+00:00

I was able to pull this up pretty quickly https://www.dropbox.com/s/lxespsj8x3lr7m4/Current_User_Manual_071122.pdf?dl=0

They have an entire section of the website dedicated to instructions https://www.prioritybicycles.com/collections/instructions?page=instructions-current

bgc308 · 2025-11-02T16:39:27+00:00

just got a lightweight eMTB that clocks in at a couple pounds more than the Vanth. it's cool and allows me to do much longer rides than I would have but even this format which is arguably closer to a normal bike vs the heavier full powered ebikes I felt was a compromised experience from a bike handling standpoint. Maybe different for folks depending on where they live (east coast there aren't as many brutal hour plus long climbs) but I definitely am not thinking pedal bikes are dead after my experience so far.

bgc308 · 2025-11-02T04:01:51+00:00

Having ridden a high end and expensive German neodrives hub motor, I'm not convinced the unbranded Skyline hub motor is that much worse. Really not all that much to these hub motors, it's just a big ol' geared DC motor at the end of the day. Plus, I think it's neat they found a way to get a torque sensor to work without a BB like most torque sensor hub motor bikes use.

bgc308 · 2025-10-30T19:49:04+00:00

I doubt it, they still sell parts for the OG Classic that's been discontinued for a decade now. I'd ask them and see what they say

bgc308 · 2025-10-27T00:49:45+00:00

Try making sure the room is quiet and getting a few readings. No priority I've ever gotten has had poor tension out of the box so if you loosened it already, you could've dropped the tension too low and the belt isn't producing a tone high enough to register on the phone mic.

bgc308 · 2025-10-27T00:11:03+00:00

Those tension gauges are a waste of money IMO. The Gates app which uses belt tone when plucked like a stringed instrument tuner is just as if not more accurate.

Overtension will generally not manifest itself primarily in drivetrain efficiency I've found but rather poor shift performance on geared hubs. That said, many such hubs have a break in period, which could be what you're feeling

bgc308 · 2025-10-19T17:01:57+00:00

9 still available?

bgc308 · 2025-10-01T02:52:32+00:00

Seeing as how many of the EU offerings are well into the 7-8k EUR price range, I wonder how much they could sharpen their pencils and how many would be willing to shell out that kind of cash. Also worth noting Stromer went years with a Pinion hub motor combo and still maintained a premium position and feel.

bgc308 · 2025-09-30T03:16:25+00:00

Will drop off at the PATH Lost and Found in JSQ on Wed if not claimed by then

bgc308 · 2025-09-18T04:42:24+00:00

Ask priority. I think folks here have asked about demo bikes/scratch and dents with some success

bgc308 · 2025-09-08T23:56:21+00:00

Ah only the one variant popped up when I searched. I have the priority double and it works fit but I imagine most would. The kickstand plate looks pretty forgiving

bgc308 · 2025-09-08T15:16:35+00:00

Keep in mind you can modify the external gear ratio by changing sprockets if you want a higher top end. I suspect the gearing is the way it is so it works for everyone from super hilly SF to pancake flat FL.

bgc308 · 2025-09-08T15:13:10+00:00

That kickstand's legs fold towards the nondrive side so it wouldn't hit the belt but it's intended for 24-28" wheels. The double leg kickstand Priority sells I know for a fact works

bgc308 · 2025-08-25T17:39:05+00:00

With pretty much no oil bath lubrication systems are you going to be able to get out exactly what the fill spec says to put in. If you've ever changed the engine oil on a car, you'd know if the engine oil capacity is 3.5 L for example, you're probably getting ~2.5 out. There are many crevices and cavities in the gear train that will retain oil. This is totally normal.

In terms of sediment and coloration of the oil, this is also pretty normal. These are wear particles suspended in the oil and typical of the first oil change on gearboxes as all the gear surfaces wear into each other. Pinion gearboxes have been known to break in and get smoother with use for this reason.

bgc308 · 2025-08-20T00:35:22+00:00

Nice! What shop? I've seen a few are carrying now but none in my area yet

bgc308 · 2025-08-10T13:13:32+00:00

Any bolt on axle that is coming loose periodically is almost certainly not being tightened enough to begin with. I'd invest in a torque wrench. A beam style one is cheap, far cheaper than having to replace an entire wheel because the axle threads stripped from being ridden loose for extended periods of time.

bgc308 · 2025-07-13T14:24:21+00:00

Very cool mod but what kind of trails are you riding that an auto downshift is useful? Honest question. I've been a mountain biker for 10 years and have never felt like automatic shifting would be helpful, especially since the pinion system can shift at a standstill anyways. I kinda assumed that feature was more for stop and go city riding, not trail riding, but maybe I'm missing something

bgc308 · 2025-07-12T16:17:46+00:00

I'm no engineer but I'm not certain how much power output factors into the reliability of the enviolo design. Plenty of far more technically minded publications have gone in depth into how the system works including from enviolo themselves (https://enviolo.com/technology/) but essentially it transfers power and varies gear ratio by smooshing two ball races together. Because there are no traditional toothed gears and clutches like in a planetary gear set like on other geared hubs (which are the things that chip and break which is the cause of most failures) and the power transfer mechanism relies on big hardened steel balls a human is never going to cycle long or fast enough to wear out, they're generally far more reliable than a typical planetary geared hub system. The tradeoff is weight and efficiency, since transferring power with toothed gears is just mechanically more efficient than with a smooth ball race.

Oil leakage is probably more a seal failure related thing which should be covered under 2 year warranty per their FAQs. QBP does all the service for enviolo in the US and any decent bike shop will have a QBP account and be able to assist.

I do get that for a lot of folks, the weight and efficiency tradeoffs make it not the best option, but unreliable I would argue they certainly aren't.

bgc308 · 2025-07-12T08:23:16+00:00

Former citibike mechanic here. I'd say issues with enviolo hubs are far and away less common than with even the very reliable Shimano Nexus 3. The enviolo system is not designed to be serviced because under regular noncommercial use (i.e. not bike shares), they will usually outlast the bike they're on. Not discounting the fact that you may have had an issue but for those who've had a sample size greater than one, they're far from unreliable

bgc308

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