How does a rack like this fit a bike?

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asinus
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Re: How does a rack like this fit a bike?

Postby asinus » 1 May 2018, 9:23pm

The British Standard (BS EN ISO 11243:2016) limits beam racks that aren't attached to the frame as well to 10 kg (it's 27 kg for rear racks that are attached to the frame, but only 10 again for racks above the front wheel). Interestingly, it doesn't go into the relation of the load to the position of the rear axle.

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Re: How does a rack like this fit a bike?

Postby Vorpal » 2 May 2018, 11:21am

brynpoeth wrote:
Vorpal wrote:
brynpoeth wrote:Does sjs still use 'lbs'? :wink:

:lol: :lol: I looked it up on Thule's website & couldn't be bothered to find the SI rating or convert it.

I must be old, I can do it in my head
22 lbs = 10 kg
:wink:

Or 22 lbs = 9.98 kg :lol:

I didn't say I couldn't do it. Just that I couldn't be bothered. And now that I haven't bothered, I've spent at least 4 times as much time on it as if I'd just written it in kg int he first place.... :lol: :lol:
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willem jongman
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Re: How does a rack like this fit a bike?

Postby willem jongman » 2 May 2018, 5:07pm

Beam racks are to be avoided if you can. The connection is not that rigid, and they carry the load too high and too far back. The result is a pretty unstable ride with anything other than very light loads. For light loads I would much prefer a Carradice saddle bag, preferably supported by a Nitto R10 rack/support.

brynpoeth
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Re: How does a rack like this fit a bike?

Postby brynpoeth » 2 May 2018, 8:36pm

Vorpal wrote:
brynpoeth wrote:
Vorpal wrote: :lol: :lol: I looked it up on Thule's website & couldn't be bothered to find the SI rating or convert it.

I must be old, I can do it in my head
22 lbs = 10 kg
:wink:

Or 22 lbs = 9.98 kg :lol:

I didn't say I couldn't do it. Just that I couldn't be bothered. And now that I haven't bothered, I've spent at least 4 times as much time on it as if I'd just written it in kg int he first place.... :lol: :lol:

It would be simplest if you and I always used both, why do our brains have two halves?
I cycled 8 km/5 miles today :wink:
Remember to use "miles", not "m"!
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asinus
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Re: How does a rack like this fit a bike?

Postby asinus » 2 May 2018, 8:42pm

To be fair, how high they are depends on frame size: on a small MTB frame the may have to be mounted up the seatpost to clear the rear wheel. There are some with a crank in the beam to make it lower than the mount, and Axiom make an invertible beam to vary the height. Some are also length-adjustable.

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Re: How does a rack like this fit a bike?

Postby Vorpal » 2 May 2018, 9:37pm

brynpoeth wrote:It would be simplest if you and I always used both, why do our brains have two halves?
I cycled 8 km/5 miles today :wink:
Remember to use "miles", not "m"!

Except 1 mile in Norwegian (mil) is 10 km. :P
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― Nelson Mandela, Long Walk to Freedom

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Patrickpioneer
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Re: How does a rack like this fit a bike?

Postby Patrickpioneer » 3 May 2018, 6:29am

When I do the shopping, the weight of my bags, tool bag, D lock and the shopping the total weight is usually around twenty pounds so its very easy to hit the limit of the rack being talked about.
Patrick

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Re: How does a rack like this fit a bike?

Postby Vorpal » 3 May 2018, 12:04pm

Patrickpioneer wrote:When I do the shopping, the weight of my bags, tool bag, D lock and the shopping the total weight is usually around twenty pounds so its very easy to hit the limit of the rack being talked about.
Patrick

If I am doing a weekly shop, I use a trailer. I'm sure that going over the rack capacity isn't a big deal; the specifications are typically determined by the lowest legal limit in a region, rather than the design limitations. But I can carry more with the trailer.
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gregoryoftours
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Re: How does a rack like this fit a bike?

Postby gregoryoftours » 4 May 2018, 9:24pm

Tubus make a nice qr axle mount with brackets to fit a normal pannier rack. Not cheap, of course, but would function better than any beam rack unless you are on a full suss! This could be used in conjunction with an integrated pannier mount seatpost clamp.

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asinus
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Re: How does a rack like this fit a bike?

Postby asinus » 5 May 2018, 4:05pm

The Tubus is a goood solution for some, but I wonder whether a solution that would fit more bikes, including those with rear suspension, would be a seatpost-clamped rack held in position by a brace clamped onto the top tube: it should
Not rotate
be able to carry more (e.g. up to 25 kg)
be easy to put on or remove (useful for Eurostar/aeroplane users) and could be combined with some sort of variable height (to deal with the stability problems) and rails that could support panniers or fold out to help support bulky loads - for the shopping etc.
I know nobody makes such a thing, but how does it sound?