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Search: Posts Made By: Jipe
Showing results 1 to 50 of 1000
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Forum: Folding Bikes
06-12-24, 04:50 AM
Replies: 53
Views: 5,768
Posted By Jipe

Indeed, most bike discs are made of stainless...

Indeed, most bike discs are made of stainless steel.

And they do the job pretty well because a bike with a cyclist on it weight much less than a car or a motorcycle (excepted on very heavy bikes...
Forum: Folding Bikes
06-12-24, 03:13 AM
Replies: 53
Views: 5,768
Posted By Jipe

For me, cable actuated hydraulic disc brakes...

For me, cable actuated hydraulic disc brakes combine the drawback of the full hydraulic and full cable actuated disc brakes:
- For the weight, they are at least at the same level as average full...
Forum: Folding Bikes
06-11-24, 04:40 AM
Replies: 36
Views: 9,906
Posted By Jipe

These small diameter wheels with very thick,...

These small diameter wheels with very thick, rigid spokes must be terrible for the comfort of the bike!

Most folding bikes with small diameter wheels and no suspension are uncomfortable due to...
Forum: Folding Bikes
06-10-24, 06:07 AM
Replies: 46
Views: 16,245
Posted By Jipe

There is another crazy guy on Carousell who tries...

There is another crazy guy on Carousell who tries to sell a Moulton Speed about 50% above the price of a new one (which unlike the titanium Birdy, is still available from Moulton):...
Forum: Folding Bikes
06-09-24, 11:04 PM
Replies: 36
Views: 9,906
Posted By Jipe

+1. The Brompton is used by lots of people...

+1.

The Brompton is used by lots of people commuting daily with it, all over the year, its reliability is proven and parts are available almost everywhere in the world.
Forum: Folding Bikes
06-06-24, 04:14 AM
Replies: 51
Views: 1,838
Posted By Jipe

Yes, rim heat up is a known problem with small...

Yes, rim heat up is a known problem with small diameter wheels. In case of downhill but also for fast small wheels bike like recumbent. And the rim wear faster if it has a small diameter. So disc...
Forum: Folding Bikes
06-05-24, 04:49 AM
Replies: 51
Views: 1,838
Posted By Jipe

There are also a front rack for two low riders...

There are also a front rack for two low riders (10kg max) and a Brompton front block adapter for a Brompton front bag (10kg).

In total 35kg, that enough for touring and easy to use, all 5 bags can...
Forum: Folding Bikes
06-05-24, 02:48 AM
Replies: 51
Views: 1,838
Posted By Jipe

I added the pictures to show how it works. ...

I added the pictures to show how it works.

Its made of aluminum and rated for 15kg max.

The system includes a tube to attach the low hook of pannier like those of Vaude and Ortlieb and prevent...
Forum: Folding Bikes
06-04-24, 11:53 PM
Replies: 51
Views: 1,838
Posted By Jipe

For me the best solution is the folding rear rack...

For me the best solution is the folding rear rack of the Birdy that automatically folds when the rear swing arm is folded and accepts full size rear pannier with enough heel clearance.
...
Forum: Folding Bikes
06-03-24, 11:46 PM
Replies: 51
Views: 1,838
Posted By Jipe

From my knowledge, its Tyrell who released the...

From my knowledge, its Tyrell who released the first reliable folding fork on its race folding bikes?

Vello more or less copied the Tyrell solution in a less clean design and manufacturing (Tyrell...
Forum: Folding Bikes
06-03-24, 12:01 AM
Replies: 51
Views: 1,838
Posted By Jipe

In your list, you do forgot folding bikes with a...

In your list, you do forgot folding bikes with a one piece not folding main frames like the Birdy, the Tyrell Ive, the Vellobike, the Ori, the Iruka. Some have a rear rack compatible with full size...
Forum: Folding Bikes
06-01-24, 10:00 PM
Replies: 10
Views: 351
Posted By Jipe

From my experience, its not: I compared the...

From my experience, its not: I compared the Bike43 (https://bike43.com/) with a 24" front wheel with the Tern GSD with two 20" wheels and the Tern is definitely more pleasant to ride and more agile. ...
Forum: Folding Bikes
06-01-24, 02:34 PM
Replies: 51
Views: 1,838
Posted By Jipe

Says YOU! Not everyone is unhappy with Tern and...

Says YOU! Not everyone is unhappy with Tern and Dahon... We each have different preferences.
Forum: Folding Bikes
06-01-24, 02:01 PM
Replies: 10
Views: 351
Posted By Jipe

I prefer by far 20" wheels with 55-62mm wide...

I prefer by far 20" wheels with 55-62mm wide tires than 24" wheels with relatively narrow tires!
Forum: Folding Bikes
06-01-24, 01:54 PM
Replies: 51
Views: 1,838
Posted By Jipe

Tern Store US Eclipse P20: 1699USD...

Tern Store US Eclipse P20: 1699USD (https://store.ternbicycles.com/collections/bike/products/eclipse-p20)

Tern Store US Eclipse D16: 1099USD...
Forum: Folding Bikes
06-01-24, 03:42 AM
Replies: 51
Views: 1,838
Posted By Jipe

Yes, indeed. Besides its folding size an ease to...

Yes, indeed. Besides its folding size an ease to fold, like for any folding bike, the long term reliability of the folding is also a potential issue.
Forum: Folding Bikes
05-31-24, 10:47 AM
Replies: 51
Views: 1,838
Posted By Jipe

Please read my post: I wrote: "For the people on...

Please read my post: I wrote: "For the people on this forum, they are nor stupid nor ignorant", not the opposite as you said.

Both Montague and Changebike are available in the US. Same for the...
Forum: Folding Bikes
05-31-24, 05:16 AM
Replies: 51
Views: 1,838
Posted By Jipe

If you ask people who never tried a small wheel...

If you ask people who never tried a small wheel bike what they would prefer, almost all of them will tell you that they want a full size wheel folding bike.

Every time a new big wheels folding...
Forum: Folding Bikes
05-31-24, 01:56 AM
Replies: 51
Views: 1,838
Posted By Jipe

Yes, indeed, but the market show the same, big...

Yes, indeed, but the market show the same, big wheels folding bikes represent a small percentage of the folding bike market with only a couple of brands selling only big wheels folding bikes, the...
Forum: Folding Bikes
05-30-24, 09:49 AM
Replies: 51
Views: 1,838
Posted By Jipe

Big wheels = too big folded size! And, it...

Big wheels = too big folded size!

And, it seems, no possibility to mount a rear rack to carry something on the bike due to the way it folds?
Forum: Folding Bikes
05-26-24, 04:20 AM
Replies: 51
Views: 2,594
Posted By Jipe

If the diameter and height fit for the bike head...

If the diameter and height fit for the bike head tube, the one of the above picture should not be a problem.

The problem was another model made for the Birdy that instead of having the frame bag...
Forum: Folding Bikes
05-25-24, 01:30 AM
Replies: 22
Views: 880
Posted By Jipe

Is the front disc on the right side of the fork...

Is the front disc on the right side of the fork like on the Birdy?

The Birdy has also its front disc placed closer to the center of the front wheel but its a standard disc and a standard disc...
Forum: Folding Bikes
05-19-24, 10:26 AM
Replies: 47
Views: 7,319
Posted By Jipe

Compare the shape of the Ultegra and the shape of...

Compare the shape of the Ultegra and the shape of the Zee: the Ultegra body is never very much tilted to the ground it is slightly tilted to the ground only when the chain is on the biggest cogs and...
Forum: Folding Bikes
05-19-24, 06:39 AM
Replies: 47
Views: 7,319
Posted By Jipe

The cage length alone doesn't define how low the...

The cage length alone doesn't define how low the derailleur cage goes.

The way the whole derailleur, body+cage, stretch is also important. Shimano improved the geometry of the recent rear...
Forum: Folding Bikes
05-19-24, 01:01 AM
Replies: 47
Views: 7,319
Posted By Jipe

These two pictures show that the derailleur cage...

These two pictures show that the derailleur cage obviously hit something.

Even if its a short cage, this derailleur with this big cog cassette and 50x305 wheels comes really close to the ground.
...
Forum: Folding Bikes
05-16-24, 10:31 PM
Replies: 4,039
Views: 952,674
Posted By Jipe

Seems a lot of work to dismount and remount the...

Seems a lot of work to dismount and remount the bike to put it in this suitcase, how long does it take to do it?
Forum: Folding Bikes
05-16-24, 02:49 AM
Replies: 16
Views: 669
Posted By Jipe

No, there are efficient mudguards front and rear....

No, there are efficient mudguards front and rear.

We often ride in muddy trails without dirty pants+shoes.
Forum: Folding Bikes
05-15-24, 03:43 PM
Replies: 7
Views: 1,486
Posted By Jipe

Moving from 60 to 61 or even 62t won't change a...

Moving from 60 to 61 or even 62t won't change a lot, 1.66% or 3.33%.

But moving from 12 to 11 will increase the gear inch by 8.3% which is a bigger increase.

BTW, you can do both!

For the...
Forum: Folding Bikes
05-15-24, 10:30 AM
Replies: 7
Views: 560
Posted By Jipe

This announcement of a new plant was made early...

This announcement of a new plant was made early 2022 before the T-line was released, it had nothing to do with an aluminum frame Brompton intended to solve the problem of the too high price of the...
Forum: Folding Bikes
05-15-24, 06:06 AM
Replies: 7
Views: 560
Posted By Jipe

What is sure is that currently, Brompton factory...

What is sure is that currently, Brompton factory has no in house aluminum frame manufacturing capabilities (nor in house aluminum frame design knowledge), unless they build up a brand new production...
Forum: Folding Bikes
05-15-24, 05:02 AM
Replies: 8
Views: 438
Posted By Jipe

The baseline of the ORI design is to have a...

The baseline of the ORI design is to have a single piece frame without the center hinge of the bifold design which is a known weak point of the bifold design.

To reduce the folded length, the...
Forum: Folding Bikes
05-12-24, 01:25 AM
Replies: 16
Views: 669
Posted By Jipe

Yes, absolutely, the bike will behave perfectly...

Yes, absolutely, the bike will behave perfectly well with captain and stoker with equal weight.

The bike wasn't designed with a weight difference between captain and stoker in mind.

Due to the...
Forum: Folding Bikes
05-11-24, 03:52 PM
Replies: 19
Views: 822
Posted By Jipe

Its 910mm, I rounded it down a little and the...

Its 910mm, I rounded it down a little and the chainstay is 347mm, I rounded it up a little, source: https://handsonbike.blogspot.com/2021/01/fnhon-gust-bike-geometry.html for the size of the cyclist,...
Forum: Folding Bikes
05-11-24, 03:21 PM
Replies: 16
Views: 669
Posted By Jipe

The sum of your both weight is far below the max...

The sum of your both weight is far below the max allowed weight of 496lbs of the Pino and the rear captain must not be heavier or taller than the front stoker, example with the previous version....
Forum: Folding Bikes
05-11-24, 10:24 AM
Replies: 19
Views: 822
Posted By Jipe

Your favorite Fnhon Gust has a very short...

Your favorite Fnhon Gust has a very short wheelbase of only 900mm! Much shorter than a road bike, much shorter than the Brompton and Birdy who have almost the same wheelbase.

Its chainstay length...
Forum: Folding Bikes
05-11-24, 09:39 AM
Replies: 16
Views: 669
Posted By Jipe

We have a Hase Pino semi-recumbent tandem, its...

We have a Hase Pino semi-recumbent tandem, its really gorgeous: both cyclist have a perfect front view instead of having the rear one having the back of the front cyclist in front of her/him....
Forum: Folding Bikes
05-11-24, 03:41 AM
Replies: 19
Views: 822
Posted By Jipe

The Birdy is not a MTB nor a gravel bike. ...

The Birdy is not a MTB nor a gravel bike.

Its suspension is designed to be used on paved roads and it rides fast and comfortably on bad paved roads including cobbles on which small wheels bike...
Forum: Folding Bikes
05-10-24, 10:01 AM
Replies: 19
Views: 822
Posted By Jipe

The front suspension of the Birdy works better...

The front suspension of the Birdy works better than the front Leading Link of several Moulton (I never tried the front suspension of the New Series which by the way has several variant).

As said,...
Forum: Folding Bikes
05-10-24, 03:49 AM
Replies: 19
Views: 822
Posted By Jipe

Due to its specific geometry, the front...

Due to its specific geometry, the front suspension of the Birdy doesn't dive when braking or bob when pedaling.

The rear suspension is classic but with a pivot well positioned, much better than on...
Forum: Folding Bikes
05-09-24, 03:41 PM
Replies: 19
Views: 822
Posted By Jipe

These 3 bikes are very different! First the...

These 3 bikes are very different!

First the Dahon MU P24 is very similar to your Tern Link P9, its heavier, the 3 speed rear hub is heavy and has a lower efficiency than a derailleur only...
Forum: Folding Bikes
05-08-24, 02:50 AM
Replies: 18
Views: 10,026
Posted By Jipe

When reading your old post saying that there were...

When reading your old post saying that there were no small wheel high performances non folding bikes and because you are in Japan, I was immediately thinking at the beautiful Tyrell non folding bikes...
Forum: Folding Bikes
05-03-24, 01:41 AM
Replies: 3
Views: 666
Posted By Jipe

Its almost impossible to answer your questions...

Its almost impossible to answer your questions without having this bike!

For the rear folding rack, the two required mounting points are present (hole on the main frame in front of the seatpost,...
Forum: Folding Bikes
05-01-24, 10:18 AM
Replies: 41
Views: 2,135
Posted By Jipe

If you look at rim and wheel specifications given...

If you look at rim and wheel specifications given by the rim and wheel manufacturers, they also give a range of tires width that fit on their rim and wheels with a minimum and a maximum allowed...
Forum: Folding Bikes
05-01-24, 04:46 AM
Replies: 3
Views: 666
Posted By Jipe

The frame looks like a copy of the Birdy 2, not...

The frame looks like a copy of the Birdy 2, not the current Birdy 3.

The folding is similar to the Birdy 2 folding.

Even if the Birdy 2 and Birdy 3 seem very similar, its not the case, the two...
Forum: Folding Bikes
04-30-24, 07:23 AM
Replies: 41
Views: 2,135
Posted By Jipe

This table is an ISO recommendation defined by a...

This table is an ISO recommendation defined by a committee of experts.

As always for such recommendations, the value have been chosen to be safe in the worst case, i.e. worst case for tire...
Forum: Folding Bikes
04-29-24, 03:40 PM
Replies: 41
Views: 2,135
Posted By Jipe

Indeed, the narrow rim changes the tire profile...

Indeed, the narrow rim changes the tire profile to a round shape.

If the rim is really narrow, this round shape only rest on the rim on a small part of the round and when cornering, there is big...
Forum: Folding Bikes
04-29-24, 10:00 AM
Replies: 41
Views: 2,135
Posted By Jipe

The ETRTO table is and ISO standardized table...

The ETRTO table is and ISO standardized table defined by a panel of experts.
Forum: Folding Bikes
04-29-24, 03:17 AM
Replies: 41
Views: 2,135
Posted By Jipe

Anyway, the narrow tires were chosen due to lower...

Anyway, the narrow tires were chosen due to lower aerodynamic resistance but bike manufacturers discovered that a wide tire with a matched wide rim provides an as good aerodynamics, so no reason...
Forum: Folding Bikes
04-28-24, 03:41 PM
Replies: 41
Views: 2,135
Posted By Jipe

Schwalbe has a table with the recommended tire...

Schwalbe has a table with the recommended tire width in function of the inner rim width, its an extension of the ETRTO table but it starts at 15mm inner rim width, 14 is not in the table!

Ultra...
Forum: Folding Bikes
04-28-24, 09:57 AM
Replies: 41
Views: 2,135
Posted By Jipe

Often, race rims like the one on these race...

Often, race rims like the one on these race oriented wheels with very few spokes are narrow and do not allow wide tires (I do not see any reason to put so few spokes on a folding bike wheel, the...
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