Miss your twin rings but nowhere to hang a mech? The Vyro FrEn 1 could be the answer

Back in the dim and distant past of mountain biking’s murky days of bold innovation (Think Odyssey
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By day, Sanny plies his trade as a Chartered Accountant and Non-Executive Director. By night, however, give him a map and the merest whisper of a trail "that might go" and he'll be off faster than a rat up a drainpipe on some damn fool mission to discover new places to ride. Rarely without his trusty Nikon D5600, he likes nothing better than being in the big mountains, an inappropriately heavy bike on his back, taking pics and soaking up the scenery. He also likes to ride his bike there too although rumours that he is currently working on his next book, "Walks with my bike", are untrue (mostly). Fat biking, gravel riding, bikepacking, road biking, e biking, big mountain adventures - as long as two wheels are involved, you'll find him with a grin on his face as he dives off the side of a mountain, down a narrow lane or into deep undergrowth in search of hidden trails and new adventures. His favourite food is ham and mushroom pizza and he is on a mission to ride all of the Munros, mostly as it allows him to indulge in eating more pizza. He has no five year plan, is a big fan of the writing of Charlie Connelly and reckons that Kermode and Mayo's Film Review Podcast is quite possibly the finest bit of broadcasting around.

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13 thoughts on “Miss your twin rings but nowhere to hang a mech? The Vyro FrEn 1 could be the answer

  1. Really, really clever idea that. Ingenious.
    I wouldn’t feel the need to buy one personally but it’s very clever.

  2. Thanks Sanny… I’m with you, single ring set-ups suck… I hope these guys are successful in saving the industry from itself

  3. Look use the offset pedal mounts on their pricey carbon Z cranks so they don’t have to make so many sizes but it makes sense for OEMs to do this so manufacturers can provide more options without customers having to replace the chainset on new bikes.

  4. Rather critical point – what’s the cost of replacement inner/outer rings for this setup? While the engineering is pretty smart and its impressive that it works so well, you’re ultimately shelling out a fair whack for a product that then leaves you entirely reliant on one company for any future replacements… That really should be set out in the review….

  5. I’ve contacted Gregor at VYRO to find out the price of spare parts. The chainset is still going strong through another winter of Scottish riding and continues to impress me. Given the growing number of frames with ISCG mounts which are designed with no place for a front mech, I reckon it is a very timely design.

    I still smile every time I change gear and the ability to shift under load is a big plus in my book. It has proven to be considerably more durable than it looks. I have ridden it through all manner of muddy slop, grit, snow and ice yet it still keeps running smoothly. That is no small achievement. I could swap back to my previous set up but given how well it continues to work, I see no reason not to keep running it.

    I hope this helps? Any questions, feel free to ask.

    Cheers

    Sanny

  6. Interesting that you don’t show a pic of the thing most people (including myself) go 1X to do away with – the shifter..!

  7. DezB…… Fifth picture down on my monitor… a piccy of the ‘derailleur’, taken from the back…. I’m guessing the chainset precludes a piccy from the front. Our Sanny does a proper job!

  8. As promised!

    Spare parts are available direct from VYRO.

    All prices in Euros and include VAT. I’ll just list the main ones for now.

    Small chain ring 31 Euros
    Slider (pack of 4) 12 Euros
    Single segment 18 Euros
    Four segments 56 Euros
    BB 39 Euros

    So I reckon compared to the price of a decent thick thin chain ring, those prices seem pretty good to me.

    One thing i should have written is that with several hundred more kilometres under my belt, the rings still show little sign of wear. I suspect that with the chain not having to change under load, there is considerably less force going through individual teeth when changing gear. This may also be due to the constant chainline. Whatever the reason, ring wear doesn’t appear to be an issue for me.

    Hope this helps?

    Cheers

    Sanny

    PS DezB Are you missing your old left hand shifter? Is that why you want a pic of it? If you look carefully at the full bike shot, you can see it. It’s ok. You’re with friends. You can admit that you really miss it. We won’t tell.Ha! Ha!

  9. This looks like a really canny piece of kit. Sorry if this is a daft question but what if a frame isn’t set up for ISCG? Appreciate a front mech is an option but I like the idea of having constant chainline.

  10. Hey Sanny! Does the crankset also shift when backpedaling? Also, do they have spare plastic tabs in the package?

    PS drain: they have BSA mounts and if your BB shell has enough clearance, there are also ISCG clamp-on adapters.

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