Quaife gearbox for sale1/22/2024 ![]() They will be buying a Quaife 6 speed sequential gear box that is in perfect working order that has come out of a proper 2000s Westfield built i believe by a guy called Paul ot Mark Hands, he decided not to use the Elite gearbox as they were unreliable so he decided to use a Quaife box instead. I agree £2500 is a large chunk of anyones money but compared to the cost of a new one it is rather cheap i think. ![]() They require more technique to use, and some find gear changes at light throttle openings tricky. However, you now have no weaker sacrificial synchros, so wear will take place on the gears/dogs themselves. This means the the gear change can be incredibly quick, it also opens up the oportunity for clutchless gear shifts. Dog boxes on the other hand have no internal method of synchronising gears during a gear change, that's for the operator! They actually have a sort of ring of teeth on the face of the cogs to lock them in place. This "slows" the gear change down somewhat and provides a weak link in the gearbox, but is perfect for road use, especially when changing gear at low revs. There's plenty of detailed descriptions of how it works on the web, but essentially it's a way of offering smoother, easier gear changes by matching the speeds of the two cogs that you are about to engage when you change gear. Syncro on the other hand refers to how the gears are actually engaged when you change gear. The straight cut arrangement offers much less drag and internal resistance so doesn't sap as much power as a conventional helical box. Straight cut on the other hand with just one tooth meshing have that typical loud gear whine, (and while technically its a weaker design, the uprated materials for the gears normally make them stronger than the standard cogs). It's significant quieter, and because the load is spread out across the other teeth, stronger for any given material. This means that all the gears have more than one tooth meshing with their partners. Typical normal road cars have helical cut teeth, if you looked at a cog from the side, all the teeth appear to run diagonally from the front to the back face of the gear. Straight cut refers to how the actual teeth are arranged on the cogs. Just to avoid confusion, synchromesh and straight cut gears are two different and unrelated options on uprated gearboxes. Would this be synchro or straight cut gears?
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