Are MTB frames not usually compatible with Smart trainers? I want to buy one for zwift, but I only have an MTB

Hey guys! I am a beginner cyclist (my longest ride was 40 miles) in a very cold place, and I need a way to bike during the winter…all I have is a mountain bike, and I wanted to buy myself the Magene T110, and it’s apparently compatible with 12x142mm and 12x148mm through axles, but I’m not sure how to check compatibility with my bike frame. I don’t have a quick release rear wheel, and the rear wheel hub is 10x135mm and secured with a nut.

I’m assuming my frame isn’t compatible with the smart trainer? :frowning:

Thanks for any help!

I would not invest in that trainer when the Wahoo Kickr Core isn’t much more expensive and offers a much better experience. The Magene is very “cheap” so expect a poor experience, the accuracy is terrible and the max watts only go up to 600, so if you plan on doing any sprints it will top out very quickly.

I’m not really planning on getting too serious with it - I don’t race or anything, I just chose to go with Zwift because I feel like it might give me more varied work.

The wahoo kickr core is about $350 more where I live, and is way out of my budget…I’m mostly wanting to do group rides and stuff.

The wahoo kickr snap is within my price range used, if that would be more readily recommended?

Thanks for the help!

Is it really a nut, or a quick release skewer?
Is the axle solid?
If it is a solid axle, then I’m not sure what wheel off trainer you’d be able to use.
It could work with a wheel on trainer, like the KICKR SNAP. You may need an adapter to make it work properly. A quick chat with Wahoo should help you sort that out.
You should probably also invest in a smooth tire for use on the KICKR SNAP, if that works out. A knobby tire is very hard to ride on the KICKR SNAP - I did a couple of rides that way and it was not pleasant.

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yeah I would go with that, but you will also want to get a different tire for the rear wheel, they make specific trainer tires for this sort of thing.

Not really sure, I loosen the nut on both ends and the rear wheel just drops out, here’s a few pics (yes, i know I need to clean it… :smiley: )

Not against buying a trainer tire if the KICKR SNAP would fit my needs

EDIT: Looks like I have a solid thru axle and no smart trainers will really work for me. It’s sad, but what can one do!

That is not a thru-axle. It is a nutted solid axle, and since the wheel falls out when you loosen the nuts, it means the bike has vertical dropouts. You probably need to use the 135mm quick release adapters on the trainer, and use a quick release skewer. I do not know if that trainer comes with a quick release skewer but those are not expensive. If you take the wheel out and measure the distance between the faces of the dropouts, I suspect you’ll find it’s 135mm.

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I don’t have calipers but I’ll try using a tape measure.

So what you’re saying is that even though I have a solid axle, because I have vertical dropouts, I could just buy a quick release skewer and the dropouts would rest on the skewer and the skewer would hold them to the trainer?

The dropouts would rest on the quick release adapters on the trainer, and the skewer would clamp the frame to those adapters.

I think you’re right! I mean it all makes sense obviously, but I’ll wait for a second person to confirm. Not because I don’t trust you, but because there are no returns on it so I need to make sure it works.

Thank you so much for the good news

If you want to be really sure, take it to a bike shop and ask them. They can look at the bike and probably tell you in seconds if my assumptions are true.

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Checked the specs sheet of my bike frame, the rear hub is 10x135, meaning that you are correct, the spacing between the dropouts is indeed 135mm

Sort of confusing.
One part says it supports 10x135. Then it also says it does not support bolt on hubs but doesn’t mention 10x135.

https://support.wahoofitness.com/hc/en-us/articles/8607292664466-Bicycle-Frame-Compatibility-SNAP

Supported Rear Hub Standards

Type Standard Description Also Requires
Quick Release 10x130mm common road QR axle, included
10x135mm hybrid, legacy mountain QR axle, included
Thru Axle* 12x142mm common road, cross, gravel, Standard mountain *KICKR SNAP 12x142 Thru Axle Adapter
[sold separately]

The SNAP does not support bolt-on hubs, Trek Thru-skew hubs, quick releases axles narrower or wider than 130 or 135mm, or thru axle hubs larger in diameter than 12mm, or narrower or wider in width than 142 mm. For this reason, the following bicycles are not compatible:

Type Standard Description
Quick Release / Bolt-on 10x120mm track
Quick Release / Bolt-on 10x126mm legacy road, < 8 speed
Quick Relase 10x141mm Boost QR
Thru Axle 12x135mm legacy Specialized SCS
12x148mm Boost mountain
12x157mm SuperBoost mountain

You may wish to contact Wahoo customer support to ask specifically.
Or do what @Paul_Southworth said and ask a bike shop.

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You’re looking at Kickr Snap info which is a wheel-on trainer. Ben is talking about a Magene T110 which is a direct drive trainer, so the wheel comes out, there is no solid axle used with the trainer. The only question is whether the frame fits the trainer since the wheel is removed.

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Well, in post #7, he mentioned he wasn’t against buying a tire for the SNAP.

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Ohh missed that part, thanks. I’d skip the Snap since the bike appears ok for direct drive

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The issue with nutted axles and wheel-on trainers is the shape of the nut, there is too much slack between the nuts and the receptacles for the axle (usually you are supposed to use a trainer-specific QR as well). Tacx at least used to make special axle nuts with cylindrical ends for use with wheel-on trainers, but that’s not relevant for a direct drive trainer. The only issue I can think of is if the dropouts are too thin for the quick release to close properly, but that is easily fixed with a washer or two between the dropout and the QR ends, and anyway it doesn’t look like that is the case. Also do note that the lever end of the QR probably won’t fit on the right side because of that bracket over the derailleur, which is okay, because its proper place is on the other side anyway.

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I was trying to steer him away from the Magene due to its limitations of 600 watts, 5% accuracy, etc… it seems like a very cheap trainer and I think a better experience would be had with finding a used Kickr Core. Amazon had new Kickr Core’s (version 1) for under $500 this week as part of prime day sales, not much more than the Magene.

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I have posted the question to my Wahoo contacts to see what they say.

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Yep it’s a cheap trainer, not a good one, but personally I would take that over a Snap any day. Van Rysel D100 is the obvious alternative to the Magene T110. Same limitations.

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