Aerodynamics / Aerodynamic Cost / Aero parts

Here's a synopsis of Hope's use of a Renishaw printer.

That's not what the article describes, it's about all the other Renishaw products Hope uses, no mention of 3D printing at Hope.

Hope is likely making bits for TeamGB rather than Renishaw themselves.

All the press releases and the logic point in the other direction - 3D printed parts for the Hope/Lotus being made at a Renishaw solutions centre.

Also the dropout has renishaw branded on it so seems likely they do the bits themselves?

Aussie cranks by Bastion - polished on the "fast" leading edge, rough everywhere else. Time to take the sandpaper to my VumaChronos? 🙂

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sexeh

Had to service Bradley’s hour record bike headset today.

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Somebody should tell Hope that I still have plenty of spare countersunk axle bolts
(image stolen from steve-p4's flickr)

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Why did it need a service? Comeback on the cards?

No... just because we brought it out to display it at the factory store in Treviso and headset was loose.

How many iterations do you reckon they did before settling on that?
How long does it take to "print"?
How long before I can do the same in my lounge?

Cool job!

https://i.materialise.com/en/3dprint

Modeling it shouldn’t be that hard, print will probably cost you somewhere in the upper three 0’s.

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Chriss Boardman and Hoy said on the BBC that the Hope bike will be around 15k which is in line with the 9k target price I was told for the frameset. I want a rear disc to continue the British made theme of my (zero aeros) track bike...

@Breso was it an easy job?

I thought it was an easy job, but unfortunately I couldn’t complete it as the steerer was damaged...

:O

Blimey! I guess it's now a museum piece anyway and won't be ridden again?

Correct!

1 iteration printed in Ti
About 60 hours to print, another day to finish and bond.
The machine to do it is an EBM machine, about the size of a small car on its end and costs about £500k to purchase.

It can be cheaper than materialise if you go direct to manufacturer, it is hard to model as the inner surfaces aren’t constant to save weight, also modelling thin walls with FEA is difficult to actually do efficiently so you can iterate through designs.

So, if I get two EBMs I can do it in half the time?

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Ok, aero bars purchased. What’s the consensus on taping the bar ends?

Personal preference. I like a bit of cotton tape.

What’s the consensus on taping the bar ends?

There isn't one. Depends on which bars, which gloves, and what loads you put into them. Try bare first and see how you get on.

Will do, cheers