Any question answered...

Cheers that's really helpful.

The ebay ones only offer "M8" as a purchase option which I assume is their 5/16". Whereas I think I need 3/8".

The cones aren’t anything exclusive. Given how pitted that one is I’d expect the cup is shot too, which makes replacement a better option if it’s a customer’s bike.

The shield isn’t built in. You can remove it by:

1- Brace the cone very gently in a vice. You don’t want to clamp the cone, you want to support the shield, as much of it as you can manage, with the flat external surface facing up.

2- Add penetrant oil of choice. Let sit a bit.

3- Using a wooden or plastic mallet, give the cone a whack. If it didn’t budge, you didn’t hit it hard enough. The trick is to knock out the cone without damaging the shield: the key is supporting as much of the shield as possible and hitting the cone squarely.

4- Press fit or gently whack the shield onto new cone if required.

I think I need 3/8"

You need a thread pitch gauge, you can't reliably tell ⅜" threads from 10mm just by measuring the major diameter, and ⅜" could be 24TPI or 26TPI

I can’t recall if they’re the same pitch but you can source cones by buying Weldtite axle assemblies or cheap Shimano MTB hubs online (£5 and £10, respectively).

Thanks for flagging that.

Looks like I'm going to have to go into the loft to find the thread gauge in my tap set.

Aliexpress has 3/8" but then you're also rolling the dice on the seller's description.

Thanks. The customer is my youngest.

This is sounding like a Christmas holiday job.

If you have a bike with a Shimano/Sram/modern Campag rear derailleur, you can unscrew the derailleur from the hanger and try to fit the cone on the exposed bolt. If it fits, it’s M10.

Will this lot work together? I think they all have 1:1.7 ratio.
Shimano 10sp road shifters, Shimano 9sp slx MTB rear derrailer, shimano 9sp cassette 11-36

Should do 👍

Thanks Jonny

I think yes if the shifters are 105 (5700 series) or old Tiagra (4600), but maybe not if new Tiagra (4700).

Flock off to the mechanics thread, so it can be searched later.

Yes. I used to run a 9spd XT rear derailleur with an 11-34 XT cassette and Ultegra 6703 3x10 shifters (with an Ultegra 6703 30-39-53 triple chainset) and it worked a treat. Deeply unfashionable, with a triple chainset, but it gave an epic gear range.

Perfect for virtually guaranteeing being able to ride up Hardknott and Wrynose on the Fred Whitton, while still being able to hammer the descents and the flats.

Self-inflating tyres can now be bought for under £4000 per wheelset. Recently proven by Marianne Vos. Anyone here going to buy some? (Cheaper than a Rolex or new spark plugs for the Porsche.)

Review here https://velo.outsideonline.com/gravel/gravel-gear/gravaa-wheels-tire-pressure-adjustment-gimik-great/

Potato (large) for scale.

😅

Thanks @Bearlegged @Brommers

Probably ought to ask this in the mechanics section, but what are the longest cable mtb brake levers one can currently buy? Tektro look like they do some fairly long ones.

It’s on a heavy contraption with BB7 mtb calipers re-worked to operate as always on (a sort of dead man’s handle type brake) and Avid Speed Dials to pull them off, but it needs a bit more leverage.

needs a bit more leverage.

Leverage is about ratio, not absolute length. Try a flat bar road lever, they have greater mechanical advantage than MTB levers.

Good shout. I also want something I can get four fingers round. The Speed Dial levers are two finger levers and we have to hold onto them for about 30 minutes at a time.

[It’s only proving out some tech on a prototype so it’s only got to work a couple of times. We can put up with some dreadful ergonomics as it’s only being used a couple more times]

DC135 could be a good option
https://www.tritoncycles.co.uk/components-c9/brake-levers-and-gear-shifters-c67/brake-levers-c618/dia-compe-135-straight-road-brake-levers-p11923

Sidi buckles, sold out everywhere, anyone has some hidden in the spares drawer?

https://www.condorcycles.com/products/sidi-caliper-buckle

Hi all, I'm looking for a mudguard extender that would work on SKS mudguards on a 20" wheel. For an e-bike: https://www.winora.com/de-en/p/radius-wran1/ attached is a photo.

Looked at getting an Ass Savers ToeTector or something similar but you have to mount via bolt/zip tie and there is no hole to do this in the current SKS mudguard. Looking at their website, I do not see any compatible extenders: https://www.sks-germany.com/en/productcategories/mudguards/

Any options (other than duct taping a half a coke 2L bottle) would be appreciated

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135 disc hub wheel, bolt on cog, 130 spaced frame.
What’s 5mm between friends?
Has anyone done this ? They must have.

in a steel frame? cold setting a frame... yeah, plenty have

I think I can come up with one, please dm me a reminder in the week!