Any question answered...

When you said regular sized rims, do you mean those 13-15mm internal one (19mm external), rather than those wide one?

ooh big wide disc only ones. 19mm internal. they just look so pretty.

Might as well go at least 25mm, 20/23mm will be likely to cause more damage to your rims.

I doubt a 20mm tyre will seat properly on a 19mm rim... Sheldon has a table that says the smaller tyre on a 19mm rim should be 28mm!

Sheldon has a table

Sheldon's table isn't up to date with modern thinking, unsurprisingly considering how little opportunity he has had to bring it up to date these past 6 years. My edit of Sheldon's table is probably more in line with what tyre and rim manufacturers are recommending these days

At the limit, you can probably get away with anything where the tyre sidewall extends outside the inner width of the rim.

^ I have Alexrims Race 38 which, according to their website, have an ETRTO of 622x15. I presume the 15 relates to the internal rim width and therefore the second row in the table. However, the bike came with 700x28 tyres off the peg.

Non-bike related question for the day: where can one purchase potassium cyanide?

How much can I flog a campag mirage 9 triple groupset (including wheels) for?

As long as you are riding road/slick tyres with sufficient pressure u can go fatboy 47c on your standard rims.

As long as you are riding road/slick tyres with sufficient pressure u can go fatboy 47c on your standard rims.

'Sufficient' in this case being far more than the optimal pressure for ride, but you have to blow them up too hard so that the handling doesn't go all to shit.

30psi works like a charm with 47c fatboy on standard rims (RS11).

Even I shudder at the thought of this!

Mufasa!

My Centaur chainset shed it's hidden 5th bolt on my last ride, so I need to source a replacement. Are these my best bet? Would prefer steel really.

Currently bodged with a 4mm spacer and long inner.

Non-bike related question for the day: where can one purchase potassium cyanide?

Lynchman is that you?

I believe it's sometimes used in taxidermy, so you might get some help from the dead-animal-stuffers. There's a thread on here about that somewhere.

NB I could be talking completely out of my arse and it's not used in taxidermy at all, so take this advice with a pinch of (non-toxic, food-grade) salt.

is there an idiots guide to using training peaks anywhere?

My coach uses it to send my training schedule out, and I've got the hang of reading my plan, but no more than that, I've now blagged a free premium account, but I have no idea what the charts on the dashboard show or really what any of the different metrics it records actually mean...

Which is more important: the front or the rear light?

front light so people don't pull out on you/turn across you - in theory a car coming from behind will see you before it hits you.

front light so people don't pull out on you/turn across you - in theory a car coming from behind will see you before it hits you.

I was thinking that but drivers do that in broad daylight so I'm not convinced.

Read the Coggan/Allan Training and Racing with a Power meter book

I don't think lights are an either/or they kinda work in pairs.

I would go with rear light if I somehow was stranded with only 1 battery and a pair of lights. Not as the front is less important but I will be in a position to make my own actions about what's ahead of me(until I hit a random pothole I can't see till it's too late). Ride slower and approach all junctions/turns like someone will pull out without warning. When/if I do stop hopefully the driver behind can see the rear light.

If you have forgotten/lost a light poundshops dotted about will usually have something.

Non cycling-related question of the evening. Huge prize if anyone knows the answer as it's pretty specific.

Does anyone know of a photo booth for ID photos near Seven Sisters or Tottenham Hale stations?

Nearest post office?

Sorry, I meant one that might be open this evening as well.

Local P.O. doesn't actually have one though.