3.5 #s Med gravel frame ~ 1600 gr, is it possible?

[Tom T]

Made with round tube set, super compact more than likely for disc brake,  

That's only .5 # more than a Crux 5 DSW framset.

My last gravel frame made, a few yrs back, semi compact, on the size L side, came in at 1.84 kg

using pretty chunky drop outs with built in flat mount and chain stays.

My first ,size  Med (56),horiz. top tube, road frame, fillet brazed , at 1.520 kg,  using mostly 7.4.7 tubing.

so I'm thinking it is possible.

Has anyone attempted it?

TomT

SF Bay Area

[Jon Norstog]

For a light and very gentle rider, .7-.4-.7 tubing would be OK.  I use it on young children's bikes regularly.  For the aforementioned light and gentle adult, maybe go up to .8-.5-.8 on the downtube.  Don't try to save weight on the chainstays.  A good place to save weight is on the dropouts - big, clunky sliders and such.  My suggestion is to build for the rider and her ride, not for some number.

jn

"Thursday"

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[Gef]

I built one out of 631 that was about that weight. Nothing mtb duty, all road spec, tig welded, ISO mount brake.

[Duane Draper]

It all depends on how long you want it to last.  

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Sent: Saturday, 05 September 2026 18:18:03
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Subject: Re: [Frame] 3.5 #s Med gravel frame ~ 1600 gr, is it possible?

 

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[m-gineering]

If it doesn't ride well it could last a long time at the back in the shed

On 9/6/26 06:59, Duane Draper wrote:
> It all depends on how long you want it to last.
>

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mvg

Marten Gerritsen
Kiel Windeweer
Netherlands

[Duane Draper]

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Subject: Re: [Frame] 3.5 #s Med gravel frame ~ 1600 gr, is it possible?

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