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The downside with training on rollers is often the lack of data, but the eRooDol Track roller is a battery-free training aid that'll record your performance around a virtual velodrome and upload it to your phone via the app. It's ideal for warming up or cooling down at your next race.
The eRooDol is compatible with its rollers in either Compact (68mm diameter) or Track (90mm diameter) versions. Both offer a simple portable setup for use at home or before and after an event for warming up or general training.
The eRooDol replaces the middle roller, that's what RooDol recommends for the best performance, to deliver speed and cadence metrics – alongside an external heart rate monitor if you wish – to an app on your phone or tablet.
When it comes to connectivity I had some issues using a brand new Android based phone. The Bluetooth would find the roller but there were some issues in getting it to pair so I had to resort to my old iPhone 5 which connected without issue.
Setup is pretty simple: go into settings and add things like the tyre/wheel size plus what chainring you are using. Oddly there is no option for sprocket size (this is track based after all, so it is presuming you are using one gear) although as you can see from the main page there is a cog with 12 next to it which I take to be the sprocket. I couldn't find a way to change it though.
Speed-wise things were pretty spot on to my Garmin sensor that I had mounted on the chainstay, plus if I used the 12-tooth sprocket on the cassette the cadence was near spot on too.
The diameter of the track rollers at 90mm is all about warming up the legs at low resistance and high speed, and to achieve that you can chase the hare around the 250m track on the screen. You can set the speed of the hare, the red dot, and race against it. It's a good way to make sure you hit a certain level in training or warm up.
When you are finished you get a breakdown of the ride both overall and lap by lap.
The app turns it into a neat training solution. I'm not a fan of the turbo trainer – I find it mind numbing, and although I got into Zwift for a while I'd much rather be out in the elements. I'll take rain, wind and snow anytime over staring at the computer screen.
With three young kids and working from home, though, indoor training becomes a bit of a necessity at times and the rollers seem to work.
I get the engagement and concentration of riding on the rollers, but now, as a bit of a data freak, I have the option of seeing my ride in figures – plus I get to chase a red dot around the screen!
When it comes to money, this roller will set you back £75 and that is on top of the £199 for the standard RooDol rollers and frame.
It's a big outlay, but if you were using a Garmin computer you'd need to fit a speed and cadence sensor to the bike on a standard set of rollers or turbo, and that's £60 rrp.
The eRooDol offers you the chance to get a very specific warm-up at any event, plus you can use it for specific training too.
An added bonus is the fact that the eRooDol uses rotation to power itself, so there is no need for recharging or replacing a battery.
If you are a roller user, the eRooDol certainly brings an extra dimension to your training
If you're thinking of buying this product using a cashback deal why not use the road.cc Top Cashback page and get some top cashback while helping to support your favourite independent cycling website
road.cc test report
Make and model: RooDol eRooDol Compact Bluetooth Roller
Size tested: Track (90mm)
Tell us what the product is for and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?
RooDol says, "eRooDol® designed to measure speed and cadence when cycling. The measurement is done directly on the surface of the wheel, without the need of installing any device on the bike."
It's a simple solution to turn a set of rollers into a training specific piece of kit
Tell us some more about the technical aspects of the product?
Speed Accuracy - +/- 1 kph
Cadence Accuracy - +/- 1rpm
Maximum speed - 50kph
Wireless Technology - Bluetooth 4.0
Devices - iOS/Android
Water protection - IP54 Splash Proof
Tell us how the product performed overall when used for its designed purpose
Once connected, the app works okay but it is not as smooth as it could be. Struggled to change the sprocket size.
Tell us what you particularly liked about the product
Gives an extra definition to training on the rollers.
Tell us what you particularly disliked about the product
I had issues connecting to Android, but that could have been my phone.
How does the price compare to that of similar products in the market, including ones recently tested on road.cc?
There is very little out there like the eRooDol, but things like the Garmin speed/cadence sensor aren't much cheaper.
Did you enjoy using the product? Yes
Would you consider buying the product? Yes
Would you recommend the product to a friend? Yes
Use this box to explain your overall score
The eRooDol brings plenty of data to the simplistic roller; I had compatibility issues with Android, but that could have been down to my phone rather than the roller.
About the tester
I usually ride: This month's test bike My best bike is: B'Twin Ultra CF draped in the latest bling test components
I've been riding for: Over 20 years I ride: Every day I would class myself as: Expert
I regularly do the following types of riding: time trialling, commuting, club rides, sportives, fixed/singlespeed
With 20 years of road cycling and over 150,000 miles in his legs it's safe to say Stu is happiest when on the bike whatever the weather. Since writing his first review for road.cc back in 2009 he has also had a career in engineering including 3D-CAD design and product development, so has a real passion for all of the latest technology coming through in the industry but is also a sucker for a classic steel frame, skinny tyres, rim brakes and a damn good paintjob.
His fascination with gravel bikes is getting out of control too!