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Josh reid never Said anything bad of the corus, and he seems trustworthy

My biggest requirement is being able to conveniently download ride data into Golden Cheetah. Since it syncs with RideWithGPS, that's doable, but requires a paid account. I've sworn off Strava given their recent user hostile data terms and conditions. Ideally I would be able to get the GPX file either on the phone or be able to connect the unit to my computer and sync it from there. Is there any such functionality? I'm pretty sick of dealing with third party services simply to interact with hardware that I've bought. One other quick question. How important is the phone tethering to the functionality? 120 hours of battery life that's only as good as my phone battery life isn't fantastic. I'm also worried that aggressive OS version requirements on the phone app will put me on a required phone upgrade path. I'm one of those weird people who don't actually use my phone for anything other than work and so I'm quite happy not sinking money into it every year or two. I'm starting to get the feeling that the days of buying hardware and having it work without having to spend money on a phone are well behind us :-(

Hey there! Love seeing the Strattos at work! How can we get in contact with you to discuss some ideas for some Polygon related collaboration?

has anyone really done a real life battery test of this unit? meaning riding until the battery runs out and not just looking at battery percentages displayed in the unit, dc rainmaker claims those percentages are bogus.

Thanks for the real review. I decided to get one of these because the problems are all software fixable and the price is okay. I mostly just want it to record my data honestly for a long time rather than direct me most of the time. I hope they will focus on making the climbing features first class.

Thanks Kurt, I may try it out in the summer.

You need more training on recumbents before doing a brevet. It uses different muscles than an upright bike, and it's different than riding around town. You need specific training or it's like going out on your first brevet. Your legs will feel the lack of preparations. I'm feeling the same effect in reverse, going from a Tour Easy to a Bianchi Randonneur. Besides the Bianchi being at least ten years older, it's also a very weird feeling to be hanging upside down from the seat to reach the handle bars. Or at least, it feels like hanging upside down. If I can't get used to it, I'll have to pick up a longer stem to raise the handlebars about an inch. I am not looking forward to having to rewrap the bars.

Long live the Lezyne GPS! Really, such a bargain if you can deal with some phaffing about ;) Still waiting for a worthy replacement. Haven't seen one yet - only the Chinese brands ( igpsport etc ) are coming close. thanks for a good review. I *might* be tempted by the Coros at $199USD. Maybe. But I'm an incredible cheapskate and Lezyne continually impress me with Customer Service - they fixed my MegaXL after I cracked the screen and rendered it useless ( I paid shipping one way ). Seriously - who does that - it was fully out of warranty.

Oh man, is it better than Lezyne ? I still have mine and want to upgrade it this year

Nice Review, thx for the update

Coros had a swift reply and listened to my suggestion of a left handed version.

Nice review. Your experience with the Dura is more or less in line with mine so far. There is an ultra race on my calendar for 2025. Using the Dura and not having to charge, saves me from carrying (or charging) a 10.000 mAh battery pack, compared to riding with my old Wahoo Elemnt Bolt (V1). For this alone, it's worth putting up with the shortcomings of this head unit. Like you've pointed out, a few of those issues have been addressed in past firmware updates, but Coros still has some work to do. In the short amount of time that I've used the Dura (a little over 16 hours of riding time), I've already noticed some room for improvement: - When going off route for the first time during a ride, a large pop-up covers the whole screen, telling you to use the app for rerouting. I want to see the map when I'm going the wrong way. - Strange behavior when backtracking a route. I went off route and backtracked the line on the map for a few hundred meters. The map turned upside down and back again a couple of times. Made me dizzy... - Sticky watts. During a recent workout with ten 10 second sprints, on two of those the wattage picked up well into the second half of the interval. - No way of customizing the activity screen that's displayed during a workout (as far as I'm aware). - Unrealistic battery life claims. This is supposed to be the headline feature for the Dura, but when I extrapolate the battery consumption so far, I'd get about 50 hours of use out of a full battery. Mind you, it's winter where I live, so the solar panel is of little to no use. It's also kind of cold, but not freezing (around 5 degrees Celsius). 50 hours is great, but far from the claimed 70 to 120 hours. For what it's worth: the screen brightness is set to 'normal' and the gps to 'auto'. There are two devices connected through bluetooth (power and radar). - An issue that I have to investigate a bit further, is that it appears that my Garmin Varia radar light lasts considerably shorter than when it was connected to the Wahoo Elemnt Bolt. With that unit, I got a consistent 12-14 hours of use out of the Varia. But when connected to the Dura, this is reduced to 5-6 hours. Battery life gained on one device and lost on the other...? I'm not aware of any other users with this issue, so it may just be me.

Can you charge while you using the light?

Comparison with the SRAM calculator would be interesting, do they offer the same values for the same inputs?

Thanks for the review. I think it will work pretty well for my needs

Can't we just buy a product that is ready? What is this cycling industry really ....

it needs offline rerouting for me to consider it. Phone should be optional, that's why you buy a cycling computer. I'm sticking with my Roam V1.

I’ve been using the Effetto Mariposa drip wax on my bike I got this May, 7000km ridden and I still haven’t reached 0.5% wear. Did the factory grease strip and normal application, and since then once a week I just wipe the chain down with some alcohol wipes and reapply, never done a full flush and reset. I figured I’ll see how far I can get out of a chain with what I call minimum effort. Nearing the end of the 100mL bottle I got so the 25 applications they estimate was pretty close on, if not conservative. All in all, I’ve been pretty happy with it and will be picking up another bottle soon.

I've only used mine for a few rides so far but I'm pretty happy with it. We'll see how it deals with routing/navigation but I used my Wahoo Bolt v2 for a gravel race in November and it kept on trying to take me the wrong way even though I'd checked the GPX and it looked accurate, it was provided by the event organisers and no one else had an issue with it. I only finished the race because I was with a large group of people and no one else turned when my Wahoo told me to! Long story short, I think even computers from the big established names have issues so I'm not too fussed as long as this works 99% of the time. One thing I already prefer over my Wahoo is that after a ride it's automatically added to Strava. No matter what I tried with my Wahoo, I had to open the Elemnt app to get it to sync.

Hi I got my Coros Dura in October so only 3 months this way. I also do Randoneuring, I decided to go for it due to the battery life and as long as I have a line to follow I'm good. :) I have seen a few updates and been using it for all sorts of rides and it has been fine for me. I guess I'm a simple use case with no power sensors etc. It will be a boon for me for the longer rides (600km) and if we ever get enough sun here in the UK then it might help out too. Great balanced review as always!

"I like big screens and I cannot lie ... ". I bought a Garmin 1040 Solar because I wanted a bigger map and larger numbers as my eyes age. The Garmin is definitely not perfect, but I don't see this Coros as a replacement in it's current form. Unreliable navigation prompts is a problem.

I'll be honest, it's an okay bike computer for the price and how corus is dealing with updates to its software. I love the review and update! Keep it up! If they make a dura 2 at the future and I hope it's going to be refined as they'll learn from the dura 1 and all the reviews. I hope hamerhead karoo (3) gives you a computer to test love the process of your reviews!

thanks for the review, i think its very fair. i think im going to hold off for now. its got a lot of good features but for my uses i think wahoo or garmin are a better fit

Is the price of the Dura competitive with similarly featured GPS units?

i'm thinking of gluing a 21700 battery on the back of my garmin 520 and wiring it up to the battery contacts inside the unit. 50-60 hour battery life but with fast off route notification. probably won't do it though

I just got one of these for Christmas as well!

Is 120 hours realistic? Not in my case so far, but that's with high brightness, HR, power, and radar connected, and controlling my smart trainer for indoor exercise. Detailed battery life claims are found here: support.coros.com/hc/en-us/articles/27280382578196-DURA-Battery-Specifications Still plenty of longevity for randonneuring. Would you take chance on Dura?

Path less pedaled brought me here! Happy new subscriber to your channel. I know 30c has got to be more comfortable haha. My 700c x 23 mm road bike got stolen this year so i probably wont have anything below 28 again. Boy I will miss that 23 width tire roadie just because it was my first brand new road bike purchase about 10 years ago and there simply aren't that many new intermediate road bikes with rim brakes and 23 mm wide tires

Very nice video , thankyou ! Don't stop riding in the cold , after a while it becomes a routine ! 😅

Here’s my cold weather strategy tomorrow here in Florida: wait until 11 am when its above 70f lol

My Winter cycling kit formula is add one breathable layer for every 10F below 50F. Have a large back bike rack and carrier to carry and store Winter gear for prevailing conditions. Store water bottle in the cage upside down to prevent freezing. Start out against the wind with fresh legs and come back with the wind warm and comfortable. Always have extra front and back lights for the early Winter darkness. Happy Trails!

Nice bike trail

best thing about texas is winter riding is the same as spring and summer riding LOL. It was 82 degrees today!

I purchased a bike with standard seat post and handlebar stem sizes just so I can run suspension.

I suspect that rim width and tire profile are another significant variable to "comfort" and "road feel" that i don't believe was addressed in this video. What was the rim width used for these tests? I presume it was rather wide, given that you were able to run 34c tires. It would be informative to see this series of tests run over a range of rim sizes to give more definition to the pressure, tire width and rim width combos that yield more "comfort"

Nice video, I really love the final part of the video! But seems like i am fucked since i am using 11 speed campgnolo, oh well......

Artisanally rebranded Panaracer baloons 😂😂😂

Pro-Tipp: In the winter put your bottles into jour jersey back pocktes (under the outer jackets). The water will stay luke warm, excellent for winter tours. Take care that they are really tight and practice bikes handling skills to pull them out during riding.

Being in the PNW now, winter rides are a bit of a harder sell than in Japan as if it isn't raining, it was just raining. 5C and wet. That said, I just did my first 200k with SIR, and it was cool, wet, and windy. Not optimal, but I have to harden up somehow. Also, my first 200k with fenders. I think those helped mitigate the wetness.

Great vid. Got me thinking. I've been on the biggy bandwagon for a few years now. At 230lbs, anything under 35mm and it's noticeably decreased comfort and stability. Sold two road bikes because I couldn't fit 35s. Other hand, 45mm-50mm is the sweet spot for me. If this means they're not quite as fast as smaller width tires, so be it since I can't tell, and besides , sacrifcing comfort and control wouldn't be worth it.

Turn your second bottle upside down to keep the valve from freezing and cover it with a sock to keep it clean & warm.

Regarding low humidity (and glasses): I'm a first-time winter cyclist but just like walking outside in winter, I find wearing a tight-fitting mask is pretty awesome: I retain a lot of the moisture from my out-breath AND my glasses don't fog up. About to try a tight balaclava as an alternative because I'm just destroying n95s right now lol

Something I'm looking into is heat exchanger masks for colder days to avoid bronchitis. It's the only real downside to being outdoors in winter, for my taste.

3:13 Signs in Korean? You are taking your long distance rides too far.

Happy holidays! We have a Round the year Randonneur award in the UK, which is great motivation to get out once a month, even in winter. Those are by far the toughest 200km rides of the year because they require superb planning and tactics - not necessarily lots of fitness. I've only had one ride where the bidons were frozen the entire ride - and that was hard. The hardest element was actually keeping the batteries of various devices warm enough to last. Battery endurance in the cold is dramatically shorter than the rest of the year. I have a light, as heavy as a dumbell, but it's the only light I trust through a long winter ride in darkness. I will not ride on ice though - it's just to easy to come off, and then be off the bike for weeks or months. As we get older, time off the bike makes the return so much harder.

I love my bivo trio insulated bottle. It's a little heavy and a little spendy, but it keeps some hot apple cider nice and hot. Conversely, in the summer it keeps ice for hours.

Fairly random comment: When I first moved to Japan something like 15 years ago, mashmallows were basically unobtanium. These days I can get them fairly easily, but I've forgotten about it. Must pick some up tomorrow 🙂 Winter, where I live in Shizuoka prefecture is quite mild (still getting highs over 10 C), but it's sooooo windy. Had to cut a ride short yesterday because it was getting dangerous. Still, I generally enjoy winter riding here. Once you are up to temperature, it's pretty hard to complain!

Excellent tips! For even colder weather I recommend pogies (Revelate Designs are the best), hub dynamo (works in any temperature, unlike lithium batteries) and replacing bottles with a drinking bladder (placed under clothing, if necessary). Thank you for an excellent video and greetings from Finland!

some great tips, it beautiful, also this video made me look up the Mlephm principle that warmer water can freeze faster than cooler water, i have heard this for years once and a while sure enough I did so e quick google resesrch and in certain conditions it is true. it might still be smart to use the hot water to disolve the sugar and your use case could still be accurate as well.

Vecnum stem requires any after sales services ?