You can't spoke a 28h rim to a 36h motor, you need a 36h rim which has exactly the same dimensions as the original Brompton 's to fit the original tyre. Some vendors on the net don't supply kits specifically for Brompton so you get the right motor but wrong rim.
Hi whoosh,,
I can't see me going down the threading onto 28h rim route, but from what I have seen online it is possible. route as the examples I can find wouldn't solve my problem anyway,, they use a crazy spoke pattern and they don't go into alternate holes on the rim,, so if they were angled they wouldn't be angled in the correct direction for this kind of spoke pattern anyway. So I would still get spokes bent and at even worse angles.
There doesn't seem to be any 16inch 36h rim out there with angled spoke holes available in the UK.. some that look like they might be from AliExpress but they don't provide enough details for me to be sure. But I'll keep going as it is for now and update if I have any problems in the long term.
I don't know if it's bedding in, or if my mind is adjusting but it doesn't look as bad to me now as it did when I first threaded them.. and if I do have any problems maybe there is a different spoke material that is more forgiving and will handle the bend,, such as titanium.