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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 03-16-12, 08:22 AM   #1
Winfried
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Locking skewers for folding bikes?

Hello

I bough the Lock n Roll by Zfal for a Oyama folding bike, only to find out that the saddle lock won't work (the lock can't go all the way on that bike) and the wheel axises are for standard bikes anyway.

I was wondering: Are there locking skewers at all for folding bikes? Google reports a couple of well-known brands but I don't know if they fit on 20" wheels:

http://www.pitlock.com/
http://www.pinheadcomponents.com/

Thank you.
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Old 03-16-12, 08:43 AM   #2
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Alternatively, I could fold the bike, lock the frame to a fixed point with a U lock, and use a 90cm cable to lock the wheels and the saddle together.
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Old 03-16-12, 09:32 AM   #3
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Thing is, lock n roll (afaik) uses Gravity to secure the lever,
they open easily when bike is upside down..

The other 2 use a 'funny' wrench fitting..

They are made for certain components, some of which are on folding bikes..
not made 'for' them..

NB some folding bike hubs, for the front wheel are 24mm shorter,
so 100mm skewers have to be threaded down the shaft further, then cutdown.

Now if the folding bike company were to make those for sort of pieces their bikes,
that would be different.

But they may consider folding it and taking it in with you, as sufficient security..

Fwiw, i fit allen bolt skewers on my bike friday Pocket Llama,
which in-spite of their 20" wheels use common 100 and 135mm wide hubs.

Last edited by fietsbob; 03-16-12 at 09:50 AM.
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Old 03-17-12, 03:49 PM   #4
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Thanks for the infos. I'll measure the original skewers and double-check with those companies before ordinering the parts.
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Old 03-20-12, 04:23 AM   #5
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I removed the two axles from the bike: Turns out the front axle is 110mm long and the rear axle is 160mm long, each with 30mm of thread.
  • Pinhead offers 125/160mm axles "The skewers can be trimmed to the correct length. You should install them and then trim them so they extend about 5mm beyond the fork on each side"
  • Pitlock offers a "universal axle which has a continuous thread that you can short".

I have no idea if those will work and how easy it is to short an axle while still being able to screw a bolt lock on them afterwards. Has someone tried it?
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Old 03-22-12, 05:15 PM   #6
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Winfried, I don`t know if there`s a specific problem with the skewers that I can`t see, but I`ve cut down a lot of bolts before, and after cleaning up the threads with a grinder or file, there`s no problem getting a nut on and off. The only problem I see is if the threaded portion is too short. If it is, maybe there`s a way to take the threaded rod out, shorten the unthreaded end, and pin it back in place? I`m guessing the threads are rolled rather than cut, so extending the thread length requires a special thread roller, which would make it almost impossible to do without spending a small fortune.
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Old 03-26-12, 04:15 AM   #7
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Quote:
Originally Posted by rodar y rodar View Post
I don`t know if there`s a specific problem with the skewers that I can`t see
The problem is two-fold:
1. No brand seems to offer locking skewers for folding bikes, which means getting the smallest standard skewer and find someone to shorten them. I don't have the equipment nor the skills to do this

2. Even then, they might not fit on my bike, which has a Dahon-style magnet on top of them to keep the two wheels together:
http://img718.imageshack.us/img718/8...amaskewers.jpg

Looks like I'll just get a second U lock to keep the front wheel attached to the frame, and hope no one will steal the back wheel.

Last edited by Winfried; 03-26-12 at 04:21 AM.
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