Brompton & Merc Folders
#101
Thread Starter
Part-time epistemologist
Joined: Jun 2005
Posts: 5,870
Likes: 3
From: Washington, DC
Bikes: Jamis Nova, Bike Friday triplet, Bike Friday NWT, STRIDA, Austro Daimler Vent Noir, Hollands Tourer
Short update ...
We have 400 or so miles on the Merc now. I installed a set of skate wheels but needed to buy a longer set of screws to securely fasten the wheels. (If you are wondering, I used M6x1.0 50 mm machine screws) Since someone is always getting rid of an old set of inline skates, this is a cheap upgrade. My wife has a much easier time moving the bike now.
I doubt that we will use it for touring or the such; but it is great for doing around town chores and such. I am calling a local welder to install brake bosses for a set of v-brakes and getting a better seatpost. As opposed to the Brompton extended seatpost, we decided to go with an EVO version to get rid of the silly penta-clip and saddle adaptor.
https://www.calhouncycle.com/productc...&idproduct=873
One could also use the standard Brompton telescoping seatpost and replace the extended part with any 26.6 diameter seatpost. It is a somewhat difficult size to find; but not impossible.
We have 400 or so miles on the Merc now. I installed a set of skate wheels but needed to buy a longer set of screws to securely fasten the wheels. (If you are wondering, I used M6x1.0 50 mm machine screws) Since someone is always getting rid of an old set of inline skates, this is a cheap upgrade. My wife has a much easier time moving the bike now.
I doubt that we will use it for touring or the such; but it is great for doing around town chores and such. I am calling a local welder to install brake bosses for a set of v-brakes and getting a better seatpost. As opposed to the Brompton extended seatpost, we decided to go with an EVO version to get rid of the silly penta-clip and saddle adaptor.
https://www.calhouncycle.com/productc...&idproduct=873
One could also use the standard Brompton telescoping seatpost and replace the extended part with any 26.6 diameter seatpost. It is a somewhat difficult size to find; but not impossible.
#102
Originally Posted by EvilV
Update on GT3 Brakes -
I'm almost on the point of going to see Norman at the South Shields folder shop and asking him if he will be able to hold his nose long enough to rebuild my rear wheel.
I'm almost on the point of going to see Norman at the South Shields folder shop and asking him if he will be able to hold his nose long enough to rebuild my rear wheel.
#103
Newbie
Joined: Jul 2006
Posts: 3
Likes: 0
I have a 20 year old Brompton and am thinking of upgrading to a new bike.
I was wondering if the merc is a copy of the newer longer wheelbase (after 2004) Brommies or the older ones. i wouldnt mind a longer wheelbase bike. Mine is 1020mm. Can someone tell me what the wheelbase of the merc is? Thanks
Geoff
I was wondering if the merc is a copy of the newer longer wheelbase (after 2004) Brommies or the older ones. i wouldnt mind a longer wheelbase bike. Mine is 1020mm. Can someone tell me what the wheelbase of the merc is? Thanks
Geoff
#104
Thread Starter
Part-time epistemologist
Joined: Jun 2005
Posts: 5,870
Likes: 3
From: Washington, DC
Bikes: Jamis Nova, Bike Friday triplet, Bike Friday NWT, STRIDA, Austro Daimler Vent Noir, Hollands Tourer
Originally Posted by geoff Law
I have a 20 year old Brompton and am thinking of upgrading to a new bike.
I was wondering if the merc is a copy of the newer longer wheelbase (after 2004) Brommies or the older ones. i wouldnt mind a longer wheelbase bike. Mine is 1020mm. Can someone tell me what the wheelbase of the merc is? Thanks
Geoff
I was wondering if the merc is a copy of the newer longer wheelbase (after 2004) Brommies or the older ones. i wouldnt mind a longer wheelbase bike. Mine is 1020mm. Can someone tell me what the wheelbase of the merc is? Thanks
Geoff
#105
Bicycling Gnome
Joined: Apr 2006
Posts: 1,877
Likes: 1
From: 55.0N 1.59W
My Merc GT3 is 1020mm. They also used the early finer rear wheel spokes. I had to replace four after a rough camping trip carrying luggage. Broke one spoke and had to carry on until I got back. Fixed that one, but three more went shortly afterwards - must have strained them badly because the wheeel was clicking horribly every turn for about forty miles before I could deal with the knackered spoke.
I'm just arranging to buy a Steve Parry front Mech bracket and a campag mirage mech. I bought a smaller 42 tooth front chainring from Merc for - wait for it £4.50! It's a really nice bit of alloy machining and I fitted it along side the old 53 tooth ring. It does just what I wanted, lowering the gearing, but with the attendant disadvantage of lowering the top end too when I'm whizzing along on the flat with a tailwind and my legs are spinning like a circus act. Also of course, to change, I need to get filthy and stop and fiddle with it, which is why I'm considering the front changer.
I didn't need to alter the chain length or anything - it works fine so far.
Has anyone fitted a front changer like this? Parry's clamp deals with the slightly odd arrangement on the Brompton of the seat tube and the bottom bracket not being directly underneath.
I'm just arranging to buy a Steve Parry front Mech bracket and a campag mirage mech. I bought a smaller 42 tooth front chainring from Merc for - wait for it £4.50! It's a really nice bit of alloy machining and I fitted it along side the old 53 tooth ring. It does just what I wanted, lowering the gearing, but with the attendant disadvantage of lowering the top end too when I'm whizzing along on the flat with a tailwind and my legs are spinning like a circus act. Also of course, to change, I need to get filthy and stop and fiddle with it, which is why I'm considering the front changer.
I didn't need to alter the chain length or anything - it works fine so far.
Has anyone fitted a front changer like this? Parry's clamp deals with the slightly odd arrangement on the Brompton of the seat tube and the bottom bracket not being directly underneath.
#107
Bicycling Gnome
Joined: Apr 2006
Posts: 1,877
Likes: 1
From: 55.0N 1.59W
Originally Posted by EvilV
I'm almost on the point of going to see Norman at the South Shields folder shop and asking him if he will be able to hold his nose long enough to rebuild my rear wheel (reference to previous discussion of his dislke of the Merc 'Ripoff'). The only problem with this plan is that I will probably suffer from withdrawl symptoms when I have to leave it there while he's doing it (if he will).
Originally Posted by yellowjacket
Picturing him doing this - LOL - 

Ha ha ha - I forgot about this. It seems unnecessary now anyway. I've had no trouble over the last five hundred miles. I reckon that the spate of broken spokes were all about fatigue having kept on riding with a broken one. Since I replaced the failures, the wheel has stayed true and strong. Thirteen gauge spokes would be better though. I see Merc will supply a new rear wheel for £45 and £16 for a new front wheel.... I'm going to go and see him about pedals though. One of the originals is on its way out.
Spare prices for Merc - compare with the price of other makers:
https://stores.ebay.co.uk/Merc-Folding-Bike-Spares
Last edited by EvilV; 02-16-07 at 08:01 AM.
#108
Thread Starter
Part-time epistemologist
Joined: Jun 2005
Posts: 5,870
Likes: 3
From: Washington, DC
Bikes: Jamis Nova, Bike Friday triplet, Bike Friday NWT, STRIDA, Austro Daimler Vent Noir, Hollands Tourer
Originally Posted by jasong
Did there ever appear a way to buy an inexpensive Merc in the US?





