I thought I'd stick all my questions / thoughts in one thread as I'd been splurging all over other threads and making a mess.
I've been weighing some of the stock components and here are my findings:
rear rack: 1056g (removed)
Promax brake levers: 186g (replaced with Avid FR5, 155g)
Handlebar 6061-T6 aluminum: 238g (replaced with an Outland handlebar from ebay.co.uk, 154g)
Suntour folding pedals: 474g (replaced with MKS Promenade pedals, 350g)
Velo saddle: 403g (currently replaced with Rido, 360g)
front fender: 126g (removed)
Fork (with magnet): 777g
Front wheel (without tyre and tube): 738g
Kickstand: 157g (lighter than I expected. If anyone knows of a lighter alternative please let me know.)
Grips: 85g (an Ergon replacement would be significantly heavier)
Handlepost: 198g (I ride with mine at lowest position and fold that way too, so could cut some length off)
Official weight stats:
Sturmey Archer XRF5: 1250g (Shimano SG-7R46: 1465g)
Kenda Kwest tyre: 445g
Added Cateye EL510, 196g (including 4 AA batteries), and removed the post pump which should have saved around 200g.
According to official stats Kenda Kwest tyres are 445g and I've switched to Schwalbe Big Apples 20x2.00 which are 530g, adding 170g.
Those changes leave the bike 1298g lighter.]
The upgrades / modifications to my Vitesse continue. Here's a crap picture that isn't at all revealing, for the time being:
It's a 2007 5 speed model. Those are MKS quick release pedals and the saddle is a razor-sharp 130 gram job, bought for next to nothing on ebay. I'll be trying out a Rido as soon as it arrives in the post. The post-pump has been removed and the brake levers are Avid FR 5.
The Big Apples are newly on and I've just been out in some ludicrously windy weather for a brief ride. First impressions:
Yeah, the gearing has changed a bit with the fatter wheels and the bike doesn't feel so diddy any more. From official stats these tyres shouldn't add much weight but I guess the fact that rolling resistance isn't as good makes the bike feel less nippy. In-built suspension? Well, I think the best way to describe the feel is that they muffle the noise, 'pillowy' if you will. Kind of like putting your hands over your ears. I'll have to test them a whole lot more. One effect of the larger tyre size that I hadn't considered is that the angle of the bike when resting on the kickstand is somewhat extreme, a little off-balance.
Most immediate technical issue to deal with (there's a bunch):
Since buying the bike I've found that going over large bumps / off kerbs etc. would cause a clanky slapping noise, and I've not been sure what it was. I thought it might have been the kickstand moving and also I've noticed that the rear magnet rattles when moved (I'll sort that out with some duct tape soon). I felt that it was worse after changing the tyres so I had a close inspection and it's clearly the bottom of the chain flapping horizontally and hitting the chainguard (big plastic jobby you can see here on the dahon site (doesn't seem to allow inserting an image from the dahon site here).
Clankiness isn't a quality I admire in bikes, so I'd like to fix this. I was advised on this forum to check the recommended chain tension and get that right when reinstalling the rear wheel. I didn't do this (I don't know how you measure chain tension), instead I marked the axle position before removing the wheel and put it back in the same place, assuming that the chain tension would have been right from the start (which may well make me an idiot).
Where should I go from here? Are other Vitesse owners have this trouble? Could someone give me a quick lesson in the mystery that is chain tension?