Any question answered...

Tidy.

Broken Thomsons come up on eBay, maybe worth set up an alert?

I assume I already know the answer, but do you definitely mean the most forward point of the lever hood? That bit us often way further forward than any lever or curve that your hand actually sits on. It varies a lot between models but just sticks out further, rather than being functional.

How are you getting on with the Lifeline torque wrench? I stopped using mine for torque because I snapped a couple of bolts with it. Only set to 5nm so I think must be waaaay off. I've never snapped a bolt before!

I heard that there’s a Palestinian solidarity bike ride happening in London on the 11th.
Does anyone know the details like when and where?

Not sure passwords have existed since microcosm.

Trying to log in with your email should send a code to that address. You're obviously logged in tho', so what's the issue?

No problems at all over here. Quite fond of it.

Curious as to what your goal is. Given that you’re renowned for your precision and tech expertise, you’ll have doubtless considered the significant noise your dataset will have due to the variability in individual setups (from correctly ergonomic to fubar). With such a wide range of outcomes, extracting meaningful or consistent insights from the collected data will be a ballache, unless you’re somehow controlling for the above, but how?

I assume I already know the answer, but do you definitely mean the most forward point of the lever hood?

Yes

you’ll have doubtless considered the significant noise your dataset will have due to the variability in individual setups

I'm not bothered about the noise, in fact I welcome it. I just want a feel for the range of values in the real world, and the newest brake lever I own is a first gen SRAM Doubletap, which I know doesn't go forward as much as modern hydro levers.

The background is that CTT is considering a reach limit to eliminate "simulated tribar" positions in the road bike class. The number put forward is 20cm from the trailing edge of the handlebar tops to the foremost point of the hoods, which we know is too short because that's where I'm at with the aforesaid SRAM levers on a bar with no aerofoil on the tops.

Maybe mine's a dud then!

trailing edge of the handlebar tops to the foremost point of the hoods

Why don't you just collect a range of this measurement, rather than from the leading edge? Would account more for bar angle etc

Does anyone have any experience of OEX jackets? The Tirran looks like a decent amount of jacket for the money.

I’ll measure mine and Liz’s bike tomorrow.

Should we have a new game of spot @Polka_Dot on here? If we do spot them do we get £5?

Why don't you just collect a range of this measurement, rather than from the leading edge?

Because then I have to know which bars people are using too, and look up the dimensions, and guess the extent of any wing shape, and assume the bars are actually made to the dimensions claimed by the manufacturer, and then translate all that into something relevant to the weird bars testers are using rather than the stock bars on normal road bikes 🙂

I guess you could find out all that. I was thinking simplicity:
we are considering making a restriction on reach from the trailing edge of the bars to the tips of the levers and I collected a range of measurements from a sample of 50 riders and none exceeded 22cm therefore a safe limit is 22cm

Or similar

Compare it to another wrench? Or look up how to test a torque wrench, using a fixed weight.

Not sure how to do 5nm without looking it up in a reference book.

But now we need to calibrate the weight, how do we know it is 1 1/4kg? Is the tape measure accurate? Is the square square? Are we pulling on the horizontal? Does the webbing strap have any stretch in it? The variables are endless.
I am joking, obviously

And the link I was referring to is gone.

1 newton meter = 0.102 kilograms of force applied to a 1 meter long lever.

Therefore, 10Nm of torque ≈ 1kg at the end of a 1m lever.

Find a 1m stick, tie 500g weight to the end, hold horizontal from the opposite end and the resulting force will get you v close to a bike wrench’s 5Nm reading. Some maths will accommodate a similar exercise with a 300mm wrench or something you can clamp to an Allen bit held by the torque wrench.

I’ve just had a measure of our 4 hydro bikes and they all come out at C80<85mm a collection sram and shimano. I could of course be measuring it completely wrong.

No you are not...pedant ;) (That is meant to be a joke)

There was a video that I though did the fixed weight test, but didn't so I deleted it, as you said too many variables.

Thank you.

Now why does that escape from my memory, but the lyrics to boney m - ma baker stick in there and refuse to leave?

Yeah, I'll bring it to work with me at some point and compare it to the torque wrenches in the workshop there.

I could of course be measuring it completely wrong.

It's possible, but at least you're measuring it, unlike whichever idiot came up with the proposed regulation🙂
Thanks, and when we get the next data point and it's significantly different, we'll know somebody is wrong

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