Spectral:On rear axle dimensions

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I'm planning to replace the rear axle in order to install a Thule wagon adaptor, and I'm not sure exactly which Thule axle will fit. Anyone know the Spectral:On axle dimensions?

The components are listed as:

Wheel
Alexrims EM30 | Shimano Deore XT
Rim Material: Aluminium

Wheel
Alexrims EM35 | Shimano Deore XT SH11
Rim Material: Aluminium

Besides popping it out and using a ruler/calipers, are the dimensions written somewhere?

Thule has a bunch of options for axles, so there's potential for errors:

 

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Looks like there a bit more info on a Neuron:On over here:

Thule Chariot

Saying 12mm x 1.5, with a length of 172/178. But it's a little unclear from the postings, or if this is the same for a Spectral:On.

 

[B1rdie]

The spectral has a boost rear wheel but I do not know if the neuron will have the same.

 

[B1rdie]

Ich spreche deutsche nicht ?but on that thread it seems they say the neuron has 12x148 mm rear axle witch is the same as the spectral. Boost = 148 mm internal.

 

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I just ordered this: Thule Chariot Steckachse für Syntace M-12x1,0 Axle Adapter

I'll post back how it works out.

 

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Got it in the mail, installed, and works well. If you need to tow a Thule Chariot child carrier, this is what you need for the Spectral:On 2019:

Syntace 160-172 mm Axle Adapter
• passend für Fahrräder mit dem 12mm Syntace Steckachssystem (148 mm Boost Einbaumaß)
• Mindest- Höchstlänge: 160-172 mm
• Gesamtlänge: 199 mm
• Gewinde, Gewindesteigung: M12 x 1.0
• Befestigung: Mutter
Herstellernummer: 20110733

Thule Chariot Achsadapter Shimano Thru / Syntace / Maxle Adapter 12 mm für Chariot Kinderanhänger kaufen | ROSE Bikes