![]() ![]() Specially formulated for Onyx Racing Products bicycle hubs, these bearings feature ceramic (Si3N4) ball bearings and a hardened chrome steel race. When worn out, the steel pins are replaceable by hand or with a set of pliers.Ĭeramic Hybrid Bearings are standard on Onyx BMX Race hubs and Classic Hubs. This patented design enables cassette alignment using the two key slots and replaceable wear faces on the remaining slots. The freehub itself is machined from 7075 aluminum alloy and utilizes steel pins to reinforce seven of the splines. They feature steel inserts to combat gouging while saving weight over a steel freehub. Hyperglide Alloy Freehub – Onyx Hyperglide alloy freehub bodies are not like the rest. MFU also makes adopting current and potential Freehub body standards easier for Onyx without replacing the clutch or driver assemblies. This design generates longer bearing life in the freehub and stiffens the rear axle assembly. The freehub body interfaces with the driver but spins on a separate set of bearings. Two oversized bearings in the hub shell support the driver, which also actuates the sprag clutch engagement system. Rather than sharing the drive and axle loads in our freehub system, the drive and axle loads work independently. Modular Freehub Unit (MFU) – The MFU design is standard on the Onyx Vesper hub line and Classic hub series. Since there are no teeth or spring-engaged pawls like those found in conventional ratchet mechanisms, Onyx hubs are almost noiseless during freewheeling. When a rider pedals to induce torque, the sprags rock slightly to wedge between the hub and driver, giving Onyx hubs infinite points of engagement, always ready to go when you are. Their unusual shape allows freewheeling in only one direction. In addition, all sprag elements maintain gentle contact with the driver and hub body, gliding with minimal friction until torque is applied. Sprag clutches are unique because they engage instantly but operate silently. The dent removal from his GTI's roof was the frosting on the cake though.Sprag Clutch – Onyx Racing Products uses sprag clutches in its rear bike hubs. ![]() The mini-ductor gave him the utility of an oxy torch for removing stuck stuff, with out the risk of igniting an adjacent fuel line. Since he shifted his focus and left the shop full time, he became reluctant to use torches since all his work is in his personal garage now. My brother was an auto mechanic for 13 years and I got him one too, every time he uses it he sends me a picture he appreciates it so much. I wouldn't go so far as to say it has paid for itself, but if you've ever struggled with ball joints on a junk yard Dana 44, the mini-ductor loosened them up without any fuss, and without igniting the grease and baking the rubber dust cover, it's nice to heat a stuck bolt without setting everything around it on fire. As my name implies, I work on a lot more than just bikes, and since I'm always taking apart rusty old stuff, it was worth the investment. It's a sweet tool I got it since I was tired of breaking out the torch all the time. the guy had been struggling with it for an hour, I hit it with the mini-ductor until it started to smoke a little bit, threw a wrench on it and it backed out without any struggle. I removed a 38 year old air fitting the other day in about 30sec. My brother used it to remove some hail damage from his car without any paint removal. Also, you can make your own heating coils with some litz wire and a bit of fiberglass sleeve. It's quiet, uses about 10A of 120Vac and doesn't require expensive consumables. You can use it to heat bearings without worrying about damaging them, remove a stuck seat post without cooking the paint off the frame or get all mid-evil on a stuck bolt. I can directly heat parts without the risk of burning my garage to the ground. I got a Mini-ductor and what a difference. I used to struggle with either a heat gun (small parts) propane/MAPP gas torch (slightly larger) or Oxy/Acetylene (get out of my way bolts) to remove stuck parts. I know they're not inexpensive, but a mini-ductor is one of the single best tool investments I've made in a long time. ![]()
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