Any question answered...

I've recently just started driving in London and compared to cycling it's much more relaxing in many ways.

Hah same

Motorcycling is a nice medium. You no longer have to worry about getting close passed or setting off at green lights in heavy traffic but you do still have a few smidsy moments of people pulling out in front of you or trying to pilot their metal boxes into the space which you occupy as if you didn’t exist. Which is nice.

thanks for the advice, looking at the price of level levers vs complete it feels like a false economy to buy just the lever, but given i prefer the modulation of sram road vs shimano road i'll assume the functionality is similar and just pull the trigger on those.

I've recently just started driving in London and compared to cycling it's much more relaxing in many ways.

Yeah, I passed (and failed) at Wood Green and almost all driving round there is cruising from one red light to the next at well under 30 mph in well-defined lanes. The only vaguely hard bits are merging where lanes disappear and giving way to oncoming traffic on narrow roads.

The most stressful bits:

• will there be an on street parking space outside our block when we return
  
• if so, will I have to parallel park with an audience
  

I very much sympathise with this.

I've spent the past ten years with all my driving experience being compact cars in America. Spaces are giant and parallel parking isn't a thing.

righto, a bit more research and realise the error of my ways, i need flat mount calipers which are not commonly available for MTB levers...

it seems like shimano do limited variants, but perhaps your suggestions is a better one...

i cant seem to find info on diameter for the level t which would hold the shifter neatly, can you or anyone find a source?

I think it's relatively easy to get adapters to combine a flat mount frame with a post/IS mount caliper.

oooh

so like this?

https://www.probikekit.co.uk/bicycle-brakes-and-pads/shimano-adaptor-for-post-type-caliper-flat-type-frame-mount/11211779.html?affil=awin&utm_content=Genie+Shopping&utm_term=Comparison+Engine&utm_source=AWin-259955&utm_medium=affiliate&utm_campaign=AffiliateWin&awc=3977_1595425329_9e20f61287531d14752728ebc346e9ad&variation=11211781]

edit - it's one

Yeah, one like that.

cant seem to find info on diameter for the level t which would hold the shifter neatly, can you or anyone find a source?

SRAM.com, the spare parts catalogue PDF is where I found the piston sizes.

Don't buy SRAM brakes, shimano are just better, they do MTB flat mount calipers now too, but you can mix and match no problem with the road or GRX ones.

@gbj_tester so what was your answer as to where to put the weight?

what was your answer

In the top tube above the midpoint between the wheel centres.

Since we're riding on a velodrome, we have to consider the different paths taken by the wheel contact points and the CG round the bends. By maximising the height of the ballast above the line connecting the tyre contact points, we raise the CG as high as possible. The track bike broadly maintains a constant speed of the CG, and since it follows a smaller radius path than the wheel during the corners, the wheel speed is higher than the CG speed because the structure constrains all parts of the cycle to have the same angular velocity. Raising the CG increases this differential so that the measured wheel speed (which is what determines the competition outcome) is maximised. We also maximise the vertical drop of the CG on entry to the bend, and this potential energy is also converted into additional speed

If we concede the ISP required to keep @Emyr 's proposition within the bounds of the question, then for most users a position at the top of the ISP is likely to be better than anywhere in the top tube, so he was right for the wrong reason.

This being a "physics problem", we have naturally conducted the experiment in vacuo in order to eliminate aerodynamic considerations. The mass consideration remain valid even when we let the air back in, and since the centre of pressure is also way above the tyre contact line, aerodynamics only add to the increase in wheel speed mid-corner relative to the speed of the centre of pressure, since the aerodynamic drag would drop significantly due to the centre of pressure following the smaller radius path if wheel speed were held constant.

This large periodic rise and fall in wheel speed, and hence cadence, is actually a disruptive factor in pursuits and hour record attempts, which some riders handle better than others.

And now you've all made me check my working, this looks like a fun start for more advanced study, and there's even a picture for the non-readers showing a wheel speed variation of about 5% twice per lap

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yeah but €130 for each set...

Is there a phone app that offers audio only navigation prompts? Brother in law wants something he can start, lock phone and throw in his bag but still give him navigation prompts through earphones.

Pretty sure Google Maps does

He said he had to leave his phone unlocked in his bag to get that to work. Is there a setting he is missing?

Anyone know of a Spanish bike forum / lufguss equivalent?

ta.

so... is there any reason i couldn't buy 2x sram level t rear and install one on the front, the levers are ambidextrous and i'm going to need to take them apart and bleed anyway due to internal routing...?

https://www.wiggle.co.uk/sram-level-t-disc-brake

Yes.

is there any reason i couldn't buy 2x sram level t rear and install one on the front

I'm more familiar with IS, but I imagine post mount has much the same issue - the calipers are differentiated front to rear because the mounting points are in different places relative to the axle. If fitting a rear caliper to the fork is possible at all, it will almost certainly need a custom adapter.

I've commonly bought rear disc brakes to put on the front of my polo bike so I get the left handed lever.

Post mount front and rear callipers are exactly the same and interchangeable.

(to a first approximation. You can never rule out some twunty manufacturer inventing a reason to differentiate them...)

El FGSS?

Sorry. Had to be done.