Mounting a rack and child seat to these (welded) eyelets? Shady?

csx25
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Mounting a rack and child seat to these (welded) eyelets? Shady?

Postby csx25 » Thu Jan 04, 2018 6:09 pm

Hello,

My wife and I have a 12 month old and would like to get a child seat that we can use on both bikes. We want to go for a rack mounted one (Yepp Nexxt) because they are easy to swap between our bikes. My bike is a tourer and already has a sturdy rack. My wife's bike needs a rack first. Looking at the eyelets (pic below), they seem to be welded on, with not much holding them!

Question is - would this be trust worthy for a child seat? If not, what are my other options? I really don't want a seat post mounted seat as we need two seat post brackets and they are heavy and expensive. Is it possible to get a rack mounted any other way, like through an axle or something?

Here is the pic.
Image

Thanks in advance.

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Aushiker
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Re: Mounting a rack and child seat to these (welded) eyelets? Shady?

Postby Aushiker » Thu Jan 04, 2018 11:51 pm

I haven't carried a child but I have carried 30 litres (so 30 kg) on my rear rack which is mounted using the braze-ons on my Surly Long Haul Trucker. I would expect those braze-ons on your bike to be as strong if it is a touring bike.

I am curious but as to what model bike is it?

csx25
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Re: Mounting a rack and child seat to these (welded) eyelets? Shady?

Postby csx25 » Fri Jan 05, 2018 11:08 am

Hi Andrew. Thanks for the reply. Sorry, my original post might not have been that clear, MY bike is fine, it’s a specialised awol tourer and has eyelets right through the frame. The pic is of my wife’s bike, which is not a router, it’s a city bike made by Tokyobike, with a step through frame. So you’d be comfortable with that amount of brazing to hold it?

Cheers, dave.

uart
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Re: Mounting a rack and child seat to these (welded) eyelets? Shady?

Postby uart » Fri Jan 05, 2018 11:50 am

Aushiker wrote:I am curious but as to what model bike is it?

Looks like it's probably this one: https://www.tokyobikenyc.com/bicycles/bisou
Image

Those tokyobikes look like they're reasonable quality full CrMo. I think that eyelet is probably stronger than you think. It fillets quite nicely into the rear dropout, and though I can't really judge the thickness too well from the photos, as little as 7mm by 4mm of high tensile steel at the neck there will still have a shear strength of around a tonne.
Last edited by uart on Fri Jan 05, 2018 7:48 pm, edited 1 time in total.

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Aushiker
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Re: Mounting a rack and child seat to these (welded) eyelets? Shady?

Postby Aushiker » Fri Jan 05, 2018 11:56 am

I think uart has summed it up pretty well. Also keep an eye on it for any signs of cracking if you are concerned.

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Tim
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Re: Mounting a rack and child seat to these (welded) eyelets? Shady?

Postby Tim » Fri Jan 05, 2018 12:04 pm

My steel touring bike has very similar rack mounts to your photo, as do most touring and commuter type bikes.That is a standard fixture.
I have never been overly confident that the design is strong enough to take a hefty load subjected to constant vibration and transferred impact shock from the rear wheel. My worry has been more so focused on the shear strength of the rack attachment bolts, as well as the eyelet strength and welding. I payed for high grade stainless nuts and bolts.
However, I regularly carry up to 30kg's of gear and water on the rear rack over rough dirt roads. I've never experienced a failure and have never seen anyone else"s bike fail at this point. The rack itself, especially aluminium ones seem to break before the frame fixture does.
Maybe an engineer's trained eye could confirm the suitability for a little lifeform rather than just a load.

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baabaa
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Re: Mounting a rack and child seat to these (welded) eyelets? Shady?

Postby baabaa » Fri Jan 05, 2018 1:26 pm

I just turned my daughters tokyobike upside down to have a good look.
The rack braze-ons are beefy enough for what you want (is her uni bike and she has a rack and a pair of my old canvas summit panniers which weigh heaps but she lugs lots of heavy shopping with them- I fitted them on the lower braze-on wanting to keep the mudguards for the upper ones)
I think you just need to work out the best rack that has solid seat to rack braces as the tokos seat stay braze-ons are also very good. If you are new to bike fiddling, make sure you get the right thread and length bolts ( try your local bike shop?) and check they are still tight/ snug after a few weeks. I guess something like the topeak kiddies rack will work well but any really heavy kit will turn the fast about town tokyo into a bit of a slug...
Last edited by baabaa on Fri Jan 05, 2018 5:57 pm, edited 1 time in total.

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Re: Mounting a rack and child seat to these (welded) eyelets? Shady?

Postby eeksll » Fri Jan 05, 2018 4:09 pm

baabaa wrote:...and check they are still tight/ snug after a few weeks...


would second this, the bolts on my rack came off, has also happened on a colleagues bike. Fairly certain it wasn't tampered with. I don't even know how long I had been running with missing bolts, the rack is so rigid, my single pannier didnt really put enough stress on it to make it noticeable.

csx25
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Re: Mounting a rack and child seat to these (welded) eyelets? Shady?

Postby csx25 » Fri Jan 05, 2018 9:58 pm

Thanks everyone for your time and advice! Feel much more confident now. I also got it checked by the mechanic at my local bike shop. He said it is strong enough and good to go. baabaa - thanks for turning your daughters bike upside down!

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