Bob, the attachments (one for each bottom) jut out just like the ones in that picture...there are three screws that mount them...then they have kind of a 'tuning fork' design if you know what I mean, you know where there are two sides and the awning has its' extention where it sits in between and is joined....then it can swivel out as the awning is un furled. At the top there are two screws (large) that hold it to the house.
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.....Is there another word for synonym? " Life is like a bicycle...to keep your balance you must keep moving." Einstien, 1930...and lastly,-"Go confidently in the direction of your dreams, Live the life you,ve imagined"...Henry David Thoreau
Ok this roller tube is a bit short, what do I need to do to extend it about 3 feet?
Just weld in a tube?
Hi Bob,
There are some issues with welding of aluminum. The ones I would be concerned with in this application are distortion and joint efficiency.
Heat input from welding causes distortion in most cases. This is often addressed in the design process by adjusting joint fit-up geometries, or by using an alternate welding process. While distortion is generally proportional to material thickness, thinner materials are more susceptible to distortion as a rule of thumb.
Joint efficiency is an issue when welding aluminum because most aluminum alloys lose strength when welded. This loss occurs in the HAZ (heat affected zone) of the base materials, or in the weld material itself depending on the alloy being joined. Designers typically compensate for this phenomenon by increasing the joint throat cross section (bulkier if you will).
The other consideration would be appearance as most roll tubes are anodized.
Regards,
Kevin
__________________ Experience can be a difficult teacher...You usually get the lesson first...And the instruction afterwards...
what about a mechanical joint- rivet or bolts on tabs-maybe epoxy
How about inserting a sleeve inside the old and new?
Last idea, get a new tube, install the springs etc in the new tube?
You could do a mechanical joint if the tube types matched, but connection would need to be very strong, and the awning grooves have to line up.
If it were me I would look for a replacement tube. 3.5" diameter tubes (guessing yours is) are commonly used on today's trailers. You may be able to find one off an old trailer rather than buying a new one. I don't think new ones are all that expensive, but the shipping costs can be prohibitive.
I have picked up several from trailers that were damaged, or no longer in use. The owner's gave them to me as long as I took them down and hauled all the awning materials away.
The only difficulty I had is that 21' long awnings are not that common around here. But they do exist.
Regards,
Kevin
__________________ Experience can be a difficult teacher...You usually get the lesson first...And the instruction afterwards...
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