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The cassette on my Magnum is unbranded, probably it is Tourny. I bought a Shimano HG41 7-Speed 11-28t Cassette (Acera) to replace it which is clearly marked as such on the largest cog, but have not yet changed it out. Mine was purchased late in 2019 and they apparently upgraded to a new model...

I have a Magnum 20" folding bike with a very narrow mechanical gear range (14-28). The table attached shows the calculated speeds for different cadences with the lowest and highest gears for this bike, a conventional 20" folding bike, two similar fat tire 20" e-bikes and a hybrid road bike. I...

I wanted to carry the battery for the Magnum Premium High-step separate from the bicycle itself and purchased a small case to hold the battery and its charger (see post). When the battery is removed, the terminals for the battery are pretty exposed and, as it turns out, there is a substantial...

I chose the Magnum Premium over a selection of mostly 4”-fat tire bikes for several reasons. I wanted a folding bike with a riding position similar to that of my road bike; a high capacity battery to maximize range; a suspension system and a rear rack. Some unusual features of the Magnum...

I wanted a case to carry the 16Ah battery or a spare battery for my Magnum Premium folding bike. I considered the Pelican iM2306 dry box that would probably work (~$100) and also considered using a 10 liter dry bag. After searching for the case size and for cases for similar size tools, I...