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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 07-22-14, 12:19 AM   #26
keyven
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Genius! Thanks for the idea! I'll probably use a knotted shoelace for my leash lol.
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Old 07-22-14, 03:19 PM   #27
bhkyte
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I have realised that my mezzo and birdie bikes will never be able to be retro fitted with a frog clamp....

Is life worth going on with.....

Downtube to the rescue.

Last edited by bhkyte; 07-22-14 at 04:04 PM.
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Old 07-23-14, 05:45 AM   #28
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If only I had seen the frog clamp before making my Bickerton clamp
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Old 07-29-14, 12:25 PM   #29
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Originally Posted by jur View Post
I cannot recommend these. See the 2nd last pic in the eBay description, showing the new and original clamp's inside side by side? You can see the Brompton clamp is wider in the middle while the new one is straight. That slight widening in the middle is there for a reason: It ensures that the outside corners of the clamp are forced together. That is crucially important for firm clamping. When I used a Brompfication clamp, I found the frame wobbled a bit. That clamp was the reason. Went back to the old clamp and all is right.
Anyone else have this same problem?

I don't have a Brompification clamp, but I have another similar aftermarket design titanium clamps and titanium lever bolts...

With the aftermarket clamps I notice that they come loose a full turn during my 5 mile commute and gets to the point that the frame will wobble and make knocking sounds as it works itself fully loose.

I've also tried it with using the OE clamps and aftermarket titanium levers... same thing... the levers still work its way loose....

Now that I have the stock clamps and bolts back on, the frame stays nice and solid, the oe plastic levers stay snug and don't budge even during the 40 mph downhill portion of my commute.

Really love how the aftermarket clamps and levers look on my Raw Lacquer bike... but the OE stuff seems to be much more functional... am I using them wrong?
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Old 07-29-14, 07:33 PM   #30
keyven
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Originally Posted by wildpanda86 View Post
Anyone else have this same problem?

I don't have a Brompification clamp, but I have another similar aftermarket design titanium clamps and titanium lever bolts...

With the aftermarket clamps I notice that they come loose a full turn during my 5 mile commute and gets to the point that the frame will wobble and make knocking sounds as it works itself fully loose.

I've also tried it with using the OE clamps and aftermarket titanium levers... same thing... the levers still work its way loose....

Now that I have the stock clamps and bolts back on, the frame stays nice and solid, the oe plastic levers stay snug and don't budge even during the 40 mph downhill portion of my commute.

Really love how the aftermarket clamps and levers look on my Raw Lacquer bike... but the OE stuff seems to be much more functional... am I using them wrong?
I bought the Brompfication clamps and they work fine IMO. Of course, I initially had them installed incorrectly so there was no difference in utility except looking sweet. I figured out my mistake a week later and now folding/unfolding is A LOT easier, since the clamps are consistently aligned all the time.

It's definitely a simple change that Brompton should apply in their next version.
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Old 07-29-14, 07:56 PM   #31
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Originally Posted by keyven View Post
I bought the Brompfication clamps and they work fine IMO. Of course, I initially had them installed incorrectly so there was no difference in utility except looking sweet. I figured out my mistake a week later and now folding/unfolding is A LOT easier, since the clamps are consistently aligned all the time.

It's definitely a simple change that Brompton should apply in their next version.
i'll PM you an address where you can send all the parts you've taken off your bikes. thanks in advance.
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Old 07-29-14, 08:21 PM   #32
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i'll PM you an address where you can send all the parts you've taken off your bikes. thanks in advance.
Oh my, I've melted them all in my cauldron. I'd be happy to send you the goo though.
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Old 07-29-14, 08:31 PM   #33
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Oh my, I've melted them all in my cauldron. I'd be happy to send you the goo though.
somehow, i suspected you would have a cauldron...
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Old 07-29-14, 09:21 PM   #34
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I like my Bompfication clamps and they've never loosened on their own.
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Old 07-30-14, 12:55 PM   #35
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Originally Posted by keyven View Post
I bought the Brompfication clamps and they work fine IMO. Of course, I initially had them installed incorrectly so there was no difference in utility except looking sweet. I figured out my mistake a week later and now folding/unfolding is A LOT easier, since the clamps are consistently aligned all the time.

It's definitely a simple change that Brompton should apply in their next version.
Quote:
Originally Posted by alienbogey View Post
I like my Bompfication clamps and they've never loosened on their own.

I had mine installed correctly so that they stay aligned all the time... and had them snug down however they still worked its way loose.

How tight do I need them to be?

The OE clamps just need to be pushed tight with the pressure of one finger and they stay snug the for my whole ride... and once snug down the OE clamps seem to want to resist un tightening.

The aftermarket clamps and levers would seem to easily loosen (vs the oe) with just a little finger pressure even though they are snugged down more.

The ones I have aren't the Brompification ones however another one that has the same design
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Old 07-30-14, 01:48 PM   #36
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Originally Posted by wildpanda86 View Post
I had mine installed correctly so that they stay aligned all the time... and had them snug down however they still worked its way loose.

How tight do I need them to be?

The OE clamps just need to be pushed tight with the pressure of one finger and they stay snug the for my whole ride... and once snug down the OE clamps seem to want to resist un tightening.

The aftermarket clamps and levers would seem to easily loosen (vs the oe) with just a little finger pressure even though they are snugged down more.

The ones I have aren't the Brompification ones however another one that has the same design
I don't believe I'm snugging them down any harder than I did the OEM clamps, but I'm certain that they're not loosening over the course of rides of up to 40 miles at a time.

Perhaps your aftermarket clamps aren't exactly like Brompification's.
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