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Folding Bikes Discuss the unique features and issues of folding bikes. Also a great place to learn what folding bike will work best for your needs.

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Old 09-06-08, 08:10 AM   #1
timo888
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Whose Mercton is this?

Does this bike belong to the LittlePixel on this forum?

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T
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Old 09-06-08, 08:12 AM   #2
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yep - that's mine
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Old 09-06-08, 08:20 AM   #3
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yep - that's mine
Nice. I like.

I see you've got the chain tensionser, but in case you are still looking for an alternative to the tensioner ... or the bedspring? I haven't made my way through the several years of intervening posts, so you may already be aware of this standard-BB-to-eccentric-BB conversion. The website says it fits into a "standard" shell. Its price makes the adapter a suitable companion to the titanium bits.

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Old 09-06-08, 08:28 AM   #4
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Thanks - it's nicer now with black rims, Aberhallo adjustable stem, proper Brompton derailleur (a swap from forum member Somnatash, which gives better chainline) 20mm über-skinny tyres and a new Campag brake roadie caliper. (see it two weeks ago at the Hyde Park ride - That's Mulleady pretending it's his )



Haha yes the bedspring idea. I'll concede now it really wouldn't work - there's more slack to take up than I originally thought (though being fair I made that comment before I got the bike so it was all just speculation).

The eccentric convertor is a nice looking component, though not really of use to a Brompton if you want to fold it.
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Old 09-06-08, 10:25 AM   #5
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Thanks - it's nicer now with black rims, Aberhallo adjustable stem, proper Brompton derailleur (a swap from forum member Somnatash, which gives better chainline)...
Hi LittlePixel did the 2spd derailleur improve the chain falling issue?
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Old 09-06-08, 03:57 PM   #6
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Hi LittlePixel did the 2spd derailleur improve the chain falling issue?
It did for when you're folding it but I've had one or two drops when riding so I suppose you can't have everything.
It's quieter now though and fine as long as you don't go fast over bumps with the power on.

Last edited by LittlePixel; 09-06-08 at 04:44 PM.
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Old 09-06-08, 04:44 PM   #7
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Haha yes the bedspring idea. I'll concede now it really wouldn't work - there's more slack to take up than I originally thought (though being fair I made that comment before I got the bike so it was all just speculation).

The eccentric convertor is a nice looking component, though not really of use to a Brompton if you want to fold it.
I'll cut you the slack if you cut me some too I've not seen a Brompton in person -- they're rare beasts in these 'ere parts -- and I keep forgetting that the rear triangle doesn't pivot at the BB as the Swift's does.

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Old 09-09-08, 01:29 AM   #8
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I'll cut you the slack if you cut me some too I've not seen a Brompton in person -- they're rare beasts in these 'ere parts -- and I keep forgetting that the rear triangle doesn't pivot at the BB as the Swift's does.

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T
Doesn't it pivot at the joint between the seat stays and the top tube?
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Old 09-09-08, 02:01 AM   #9
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Only when the seatpost is retracted. When riding, the seatpost is in both the maintube and the triangle. This will prevent the rear triangle from pivoting when riding.
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Old 09-09-08, 01:37 PM   #10
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Only when the seatpost is retracted. When riding, the seatpost is in both the maintube and the triangle. This will prevent the rear triangle from pivoting when riding.
I mean doesn't it pivot there and not at the BB?
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Old 09-09-08, 05:45 PM   #11
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Yes - if it pivoted around the same axis as the bottom-bracket the chain wouldn't go slack. Sadly it's from a point behind the bottom-bracket so when you fold the chain gains a few inches so it needs the tensioner..
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Old 09-09-08, 07:10 PM   #12
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I mean doesn't it pivot there and not at the BB?
If you're referring to the Swift, the "pivot point" is at the bolt in the top tube. I should have said that the Swift's BB remains constant relative to the opposite side of the rear triangle as it sweeps.

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