AverageCommuter
01-29-08, 10:11 PM
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Recumbent - Homemade recumbent frame weight?
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wologan
02-04-08, 03:09 PM
I haven't weighed my frame only, but my complete SWB was 18kg. Here are some details: http://ollypowell.wordpress.com/about-the-bike/ 3.6kg for frame and seat only is quite impressive. Have you found somebody to bend the main tube? I had to resort to using 1.2mm wall thickness, partly because nobody in my city (Adelaide) would bend 50x0.9mm, so this added 500g to the total weight.
We have another frame that comes in around that weight, I guess 5kg (a commercial one from TW-bents) but it is without suspension, and uses the seat as one side of the rear triangle.
Good luck
Olly
We have another frame that comes in around that weight, I guess 5kg (a commercial one from TW-bents) but it is without suspension, and uses the seat as one side of the rear triangle.
Good luck
Olly
AverageCommuter
02-05-08, 01:43 PM
I haven't weighed my frame only, but my complete SWB was 18kg. Here are some details: http://ollypowell.wordpress.com/about-the-bike/ 3.6kg for frame and seat only is quite impressive. Have you found somebody to bend the main tube? I had to resort to using 1.2mm wall thickness, partly because nobody in my city (Adelaide) would bend 50x0.9mm, so this added 500g to the total weight.
We have another frame that comes in around that weight, I guess 5kg (a commercial one from TW-bents) but it is without suspension, and uses the seat as one side of the rear triangle.
Good luck
Olly
Thanks. Believe it or not, it's made of wood. I've based it on the design in the first picture which is made by Sam Bennett. The rest of the pictures are mine in progress. It's laminated sheets of plywood. I'm not sure how he made his, but mine is somewhat hollow. I don't really have access to many quality woodworking tools, but I do have access to a laser cutter. So I've been limited to 18"x24" sections of wood.
Who knows, the whole thing may fall apart when I climb on for the first time, but I'm willing to take that chance.
We have another frame that comes in around that weight, I guess 5kg (a commercial one from TW-bents) but it is without suspension, and uses the seat as one side of the rear triangle.
Good luck
Olly
Thanks. Believe it or not, it's made of wood. I've based it on the design in the first picture which is made by Sam Bennett. The rest of the pictures are mine in progress. It's laminated sheets of plywood. I'm not sure how he made his, but mine is somewhat hollow. I don't really have access to many quality woodworking tools, but I do have access to a laser cutter. So I've been limited to 18"x24" sections of wood.
Who knows, the whole thing may fall apart when I climb on for the first time, but I'm willing to take that chance.
wologan
02-06-08, 01:12 AM
I wasn't expecting that reply! Thanks for posting the picture, it looks awsome.
I would pay particular attention to the strength of the frame where the head tube passes through. These are one of the weaker points on many metal recumbents. If you could increase the height of the tube above the level of the main "tube" and ad something like an upside down gusset this would strengthen the joint without messing about with the geometry too much.
All the best
I would pay particular attention to the strength of the frame where the head tube passes through. These are one of the weaker points on many metal recumbents. If you could increase the height of the tube above the level of the main "tube" and ad something like an upside down gusset this would strengthen the joint without messing about with the geometry too much.
All the best
AverageCommuter
02-06-08, 03:39 AM
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hannes
10-20-08, 06:17 AM
just had a look at your frame - how did it work out?
Hannes
Hannes