Brompton owners

I stand corrected.
If memory serves, that wasn't the case previously.
Thanks.

I have this for my little one, absolutely splendid.

The limit is £1k, but pretty much every shop will do a separate transaction for the excess.

.

This is going to be brilliant for about a week. I think the chainring messes up the shifts at certain points though because of the ovalness.

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I'm racing the Brompton Invitational as part of the World Cycling revival on Thursday 14th of June at Herne Hill. Should be fun as I get to ride one of those fancy CHPT3 Bromptons.

https://www.brompton.com/News/Posts/2018/48Invitational

If anyone fancies coming down to shout at me all cheers welcome!

~60t chainring users (@maynardeames ?), do you have any shifting issues on a two speed?

Changed to a 58t (59t peak) oval ring and trying to work out if it's causing a shifting issue where the top pulley on the chain tensioner slips out of the shifting unit.

Not a bad prize pot!

Jealous!! I didn’t get a spot and instead on the waiting list, tbh it worked out alright as I have double booked that weekend though I would love to see you smash it on the track on 16 inch wheels!

Could it be an issue of chain length at max ovality rather than the size of the ring itself? I'd read that 60t would cause problems with the fold but nothing about shifting. The top BWC people seemed to be running 60t without any issues last year...

Hmm, it's a nominal 58t that goes from 59t to 56.5t so should be fine. Used the same number of links you used for yours and it's fine in normal operation, a bit of slack taken up by the tensioner but not stretched.

Will have a fiddle.

yup! well yes and no...

At times I have to make a few tweaks, but generally its perfect. Because the chain tension is not ideal I assume that causes it.

On a 54t you use a 102l chain, 58t you would need 104. therefore on 56 or 60 you have to use a slightly longer chain than ideal - being 103 or 105 and this means there isnt as much tension in the system. Whether that actually makes a difference, I could not say for certain, but id say 1 in 100 shifts has a little slowness to it

Good luck! Just take a decent sized chainring to swap on the start line ...

Haha thanks, no bike adjustments allowed apart from pedals..

Damn, I want a fan club!

Excellent,

Warn me and I would like an excuse to bake things for. Would like the excuse to test a few vegan and gluten free recipes.

Sounds great, hopefully they’ll allow saddle height adjustment.

no adjustments allowed apart from pedals

Hahaha, imagine..

anyone know any large suitcases that would fit a brompton in (inside one of those ikea bags) and then some clothes on top. check-in obviously.

From looking a lot of cases dont seem to be wide enough

https://www.sjscycles.co.uk/transporting-bicycles/vincita-b132c-transport-box-for-brompton/ These are cheap at the moment

I have the Brompton IT chair on my brompton, without question the best upgrade for my brompton. It's fantastic. My 6 year old son just fits on it, a little heavy for any inclines with my 3 gears as you can't stand to pedal. Works great with my 5 year old daughter, did a couple of trips with her on sunday involving public transport too - no other cycling combo could match that

Really recommend it, cycling with your kids is one of life's great joys

If you want the better options, go B bag or B&W case.

https://www.sjscycles.co.uk/transporting-bicycles/bw-international-folding-bike-box/

https://www.sjscycles.co.uk/transporting-bicycles/brompton-bike-bag-complete-with-castors-and-strap/

Joe from Brompton uses a 70t!

I have joined the club and have some questions for you crazy cats:
Best tyres? I've heard people are using kojaks or marathon racers, are they lighter than the OEMs?
Where do I find reasonable quality/price 16" tubes?
Presume I need to carry a spanner to get wheels off if I puncture? What's the forum approved solution?

Marathon Racer so far is a great alternative to the Brompton's own, and still feel nippy compare to the standard Brompton Marathon (they felt a little squirmy like they're low on pressure).

The newer Marathon Plus is slightly smaller and fit better on Brompton now, so that's a good option to nearly reduce the risk of puncture to zero.

You don't wanna skip the weight on tyres, it's a Brompton, the kind of bike you (supposedly) ride with normal clothes.

As for inner tube, the most common are the Schwalbe No.4 16-18" one, as long it said between 28-349 to 37-349, you be fine, shop around and you might get some cheap.

As for puncture, 15mm spanner is your friend, but you might need a couple of small piler to undo the gear incidator (I tighten them up by using a pilers on all the Brompton I've built/service as they can get loose under vibration).