Folding pedals

General cycling advice ( NOT technical ! )
fastpedaller
Posts: 1570
Joined: 10 Jul 2014, 1:12pm
Location: Norfolk

Re: Folding pedals

Postby fastpedaller » 8 Nov 2018, 7:25pm

If taking teh rear wheel out wouldn't it be beneficial to have both pedals folding? Am I missing something, or does the rear triangle and BB turn through 180 degrees (but only if rear wheel is removed). Brompton pedals are very expensive anyway. :(

Brucey
Posts: 31102
Joined: 4 Jan 2012, 6:25pm

Re: Folding pedals

Postby Brucey » 8 Nov 2018, 7:48pm

if you do a full fold (i.e. with both wheels out) yes having both pedals fold is better, but if the rear wheel is left in only the right pedal sticks out much. Dunno if that makes it small enough to go in your 'van though.

Depending on how you stash the wheels in the 'bundle', even a full fold with non-folding pedals need not have pedals sticking out very far; if necessary they can go alongside the wheels or between spokes, with (say) a wheel each side of the main frame.

I think the rationale behind the solid rear axle was that most folk would want to throw the bike into a car boot, and for that the rear wheel can stay in the bike. I have QR wheels front and rear in mine though.

cheers
-------------------------------------------------------------------------------
~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~

fastpedaller
Posts: 1570
Joined: 10 Jul 2014, 1:12pm
Location: Norfolk

Re: Folding pedals

Postby fastpedaller » 8 Nov 2018, 8:25pm

My 'stowage plan' (which may be different once I've tried it) is to put the wheels in an old Ozzo double wheel bag which has been redundant since me racing days. This will then be 'soft-ish for laying on the frame or indeed in one of the other storage bays in the caravan. van is 6ft x 4ft in plan, with storage 4ft x 2ft x 18 inches, so it will be tight methinks.

fastpedaller
Posts: 1570
Joined: 10 Jul 2014, 1:12pm
Location: Norfolk

Re: Folding pedals

Postby fastpedaller » 12 Nov 2018, 5:36pm

My montague was delivered today :D . The seller had (IMHO) exaggerated the extent of the paint damage to the frame - it's not too bad at all, finding (or maybe mixing!) the colour will be a challenge, but a few dabs with a tiny paintbrush, followed by some clear lacquer (I have some wonderful brush-on lacquer) and it will be fine. I'm undecided as to what components to use (more so now that I've received it), My intention was to replace the bb with (probably a thun twist) a slightly shorter one and fit a crank with a single chainring. The thing is that the bb feels perfect :) .... I wasn't expecting that. The present bb inaccurately measured with L crank still attached appears to be about 132mm - more measurement will follow in due course, but I think it will be far too long for a single. This afternoon (because I had time available due to delivery) I fiddle around in the garage and made a keeper/spacer to protect the dropouts from being crushed when the rear wheel is removed, and also hold the chain to some extent. My inspiration came from a cinelli chain keeper, to which was added an old axle with quick release and various lock nuts and cones to get to the required result. photos attached. A suitable front axle and quick release will also be used for the forks.
Image Attachments
wheel2.jpg
wheel1.jpg

Brucey
Posts: 31102
Joined: 4 Jan 2012, 6:25pm

Re: Folding pedals

Postby Brucey » 12 Nov 2018, 6:20pm

ah, a blue one! IIRC the blue ones had the nicest built frames (with proper dropouts) and the best specification of parts from new.

When considering different bottom brackets, please note that most modern BBs won't fit; the seat tube bulges into the BB shell in such a way that a ST three piece BB will fit just fine but pretty most cartridge ones can't be fitted. I have fitted a sun-race/chin huar type one to a bi-frame by cutting away most of the centre sleeve and bonding the parts in using lots of threadlock (the centre sleeve was no longer strong enough to take the normal load) but this was a right faff.

It is a very good idea to use a grease gun on the nipple at the back of the seat tube; if not regularly greased the frame can get to the point at which the bike will never fold again!

cheers
-------------------------------------------------------------------------------
~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~

fastpedaller
Posts: 1570
Joined: 10 Jul 2014, 1:12pm
Location: Norfolk

Re: Folding pedals

Postby fastpedaller » 12 Nov 2018, 7:02pm

Yes it has good dropouts. It looks/feels as though the greasing has been done regularly. In fact the bike doesn't look as if it's had much hard use. BTW the seatpin is 26.6mm (and measures that as well!) and is a good, non-rattly, fit. I'm considering one of the Thun twist bb's - they appear to be plastic cups, and with no sleeve, but have 'sealed' bearings; again (like the cheap folding pedals) I'm not expecting miracles, but it may well serve the purpose I'm after. I was thinking also of fitting V brakes, but the cantis do appear to be worth keeping.