Re: Gluing polyester canvas to vinyl??
Sun 16 Feb, 2014 8:54 pm
I like the frame. Helped build a greenhouse frame this way. Only concern would be that the joins might crack in the cold and wind moondog?
PVC can become very brittle.
PVC can become very brittle.
Re: Gluing polyester canvas to vinyl??
Sun 16 Feb, 2014 9:05 pm
Could happen I agree. If it does I'll reglue and strengthen, but the PP fittings are pretty strong down to low figures, How low I don't know.
Re: Gluing polyester canvas to vinyl??
Mon 17 Feb, 2014 8:35 am
Properly guyed down it should be strong enough.
I have one more 6m length of the 50mm tube, perhaps I should add one more A in the centre rather than a vertical pole
All it will cost is the PVC fittings after all, about $22-
I have one more 6m length of the 50mm tube, perhaps I should add one more A in the centre rather than a vertical pole
All it will cost is the PVC fittings after all, about $22-
Re: Gluing polyester canvas to vinyl??
Mon 17 Feb, 2014 2:14 pm
Actually $14- and I'll be adding another A just to be secure.
Re: Gluing polyester canvas to vinyl??
Mon 17 Feb, 2014 6:03 pm
What are your steel poles doing in the inside? Did you cut them so they meet in the middle of the join, or is there a significant section that is purely PVC?
Re: Gluing polyester canvas to vinyl??
Mon 17 Feb, 2014 6:40 pm
Sorry icefest I'm not with you there; can you clarify the question for me please
Re: Gluing polyester canvas to vinyl??
Mon 17 Feb, 2014 8:43 pm
That was badly explained on my part. I'll try to rephase.
How much of the PVC sleeve has steel pole inside it?
Is the steel pole only stuck into the PVC for ~10cm at each end or is there steel inside the entire PVC shape.
How much of the PVC sleeve has steel pole inside it?
Is the steel pole only stuck into the PVC for ~10cm at each end or is there steel inside the entire PVC shape.
Re: Gluing polyester canvas to vinyl??
Tue 18 Feb, 2014 11:28 am
OK
I have aluminium pole, I have cut the PP at 100mm so the pole goes into the PP fitting for that 100mm, That is for both the legs and the ridge pole, in addition to the 100mm there is the 35mm of the fitting itself, so where I will drill holes for the eyebolts there will be a thickness of about 8mm of PVC plus the ~2.3mm of the aluminium
Most of the strain should be taken where the PVC is at its thickest, the pipe itself was used as a reducing sleeve as well as for a little added strength
I've been talking to some Canadians on the Winter Trekking forum and they use these or similar fittings down to -30C so I should have an adequate safety margin
The poles do not touch anywhere inside the fitting, I am relying on the strength pf the PVC pressure fitting. I would not try this with ordinary PVC fittings, the PP are about 5 times stronger I think; perhaps greater
I have aluminium pole, I have cut the PP at 100mm so the pole goes into the PP fitting for that 100mm, That is for both the legs and the ridge pole, in addition to the 100mm there is the 35mm of the fitting itself, so where I will drill holes for the eyebolts there will be a thickness of about 8mm of PVC plus the ~2.3mm of the aluminium
Most of the strain should be taken where the PVC is at its thickest, the pipe itself was used as a reducing sleeve as well as for a little added strength
I've been talking to some Canadians on the Winter Trekking forum and they use these or similar fittings down to -30C so I should have an adequate safety margin
The poles do not touch anywhere inside the fitting, I am relying on the strength pf the PVC pressure fitting. I would not try this with ordinary PVC fittings, the PP are about 5 times stronger I think; perhaps greater
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