Brompton owners

There's not really anywhere sensible to mount a wide rear light when you have one of these. I have a Secula on the right seat stay.

Light on the saddle instead?

@grams thanks for the insight.
@HoKe I’ve got a Dynamo light so cable to rear light wound round the seatpost, going up and down wouldn’t be the nicest way of having it wired.

Thought this would be the case. Guess that why people get the Brompton rack so they can mount it on that.

I’ve seen this on AliExpress (but don’t have it myself) 3rd picture appears to show it fitted to a Brompton.
https://vi.aliexpress.com/item/1005005957208012.html?spm=a2g0o.detail.pcDetailBottomMoreOtherSeller.14.4f25LmZJLmZJfe&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.40050.354490.0&scm_id=1007.40050.354490.0&scm-url=1007.40050.354490.0&pvid=a9e657e2-52e6-462b-82c1-57e9b91d8b4b&_t=gps-id%3ApcDetailBottomMoreOtherSeller%2Cscm-url%3A1007.40050.354490.0%2Cpvid%3Aa9e657e2-52e6-462b-82c1-57e9b91d8b4b%2Ctpp_buckets%3A668%232846%238114%231999&pdp_npi=4%40dis%21GBP%2119.95%2115.56%21%21%2125.16%2119.62%21%402103872a17241768135707541eed02%2112000035031018626%21rec%21UK%21%21ABXZ&utparam-url=scene%3ApcDetailBottomMoreOtherSeller%7Cquery_from%3A&gatewayAdapt=glo2vnm

Different rack and cant seem to find the photo you're referring to.

Yeah I see that. Quite liked the shape of the other one though. But this seems like a decent alternative..

Is there a reasonable priced version of the clip that holds the rear triangle to the seat tube, so that it does not drop down when you try to lift the rear wheel by lifting the saddle. Sorry, I'm not even sure that makes sense to me.... but you get the idea ;-)

Unfortunately you need the whole assembly, as the clip and stopper disk are integral to each other. This is the official kit, and has everything you need to change an older Brompton without the folding qr to the qr option https://www.sjscycles.co.uk/frames/brompton-rear-frame-clip-retrofit-kit/

Spa Cycles used to sell a C-shaped steel clip for about £4 specifically to stop the SWB Brompton rear triangle from dropping when the saddle was lifted. It arched over the suspension block and was released to allow the fold to start. The Spa clip was completely obsoleted when the LWB frame was introduced, along with its new frame clip.

Not a clip but a toe strap or a zip tie does the same job when looped around the seatpost.

Not as tidy or nifty but very reasonably priced.