Recent content by Buk___

Can't help with your parts search; but if you are in UK/Europe and want to get shot of your broken Q128H, I will buy it, if the price (and shipping) are reasonable. (And then I noticed "North Arizona" :( )

Anyone here happen to know (or have a dissassembled Q128H to hand) the size of the bearing on the right hand side, between the outer cover and the axle? If anyone knows (or can measure) it would allow me to order a new one and not disassemble until I got it. Thanks.

Your faith in distance strangers is touching. Would you agree that Airbus SE are probably fairly competent and diligent engineers; working in a highly regulated industry and subject to intensely regulated and highly specified design and testing requirements? If so, read this(pdf) When those...

Do you ever park your bikes away from home?

Latest iteration: No drilling, screws or jubilee clips or extra tools required. One wrap-under plate (lighter blue lower image) and as many or few of the identical darker blues as your axle accommodates. Laser cut parts, bent with a couple of bits of scrap wood and a strong vice, heat...

No. If you follow the link to the bigger version, it also includes a ghost of the axle that shows the view is from the outside. If you're worried about the direction of rotation, imagine you are leaning over the bike from t'other side and looking at it upside down :) You'll have to imagine it...

I've had to shrink this using lossy compression in order to get it down to a size that will upload here (the original 15MB), which has made it rather small and fuzzy, but you can still see: The way the upper arm moves left relative to the lower. The ring being forced open as the load...

BS.

Closed die forging -- hot or cold -- produces very desirable and repeatable grain structure: Which is why it is used for the manufacture of the highest stressed component in ICE engines, the gudgeon pins; and even 1-piece performance crankshafts: But die costs are huge and only make sense if...

Ah. Okay. I would have dismissed the thought except that for all the world, that looks like a tabbed torque washer under your domed nut. Three thoughts: The wrap-under layer is only 0.5mm thick and would fit around your dropout fine. It would replace 1 or two (or more) layers of the...

Is that a motor behind there? It looks like an ordinary wheel.

You miss my point. But what's new.

I was hoping that by modelling Justin's failed attempt, and showing that the results of the simulation produced similar results, I might demonstrate the efficacy of simulation testing. To be convincing, I need more accurate data than I can extract from pictures. (Due to the loss-y nature of the...

I did com up with a variation that might actually work for a fairly wide set of dropouts. (Sorry, couldn't be bothered to resize it for display here.) The layered spring is essentially the same, although I've adjusted the angle of the slot to allow the faces to better conform to small changes...

A link would have been nice. And do you realise that 0.015" is nearly 1/2 a millimeter? If your "fifteen thousandths of an inch clearance" means all around, then on a 12mm axle, that represents 3.45° of rotation in either direction. Or 2.2715° each way for a 14mm axle. Given a (relatively...