Re: Lay back seatpost - with or without support?
If you rely on a tubular seat post then bending it will always be a possibility. Like was said above, the longer it extends to the rear, the easier it will bend (more leverage)
If you have access to a lathe and a source of heat you can fabricate your own post from solid bar stock. Most seat tubes will require a 1" seat post that tapers to 7/8" where the saddle mounts. I've made several with a lay back of six and seven inches. Never bent one yet. A friend in the metal working business would be a plus here if you don't have the necessary tools.
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