This is exactly ru-vid.comUgkxUHHotQRjIQnfuxEeVotlkHVYWH0DXZoS what I needed to get some exercise while I'm stuck at my desk all day. It's just the right size. Only downsides are that the right oeddale unscrews itself while I use it and increasing the tension causes it to squeak while in use. Both are minor issues that aren't that important to me. So I give it 5 stars.
“Hello! I’m impressed with the quality of your work. If possible, could you create a demonstration video? If that’s not feasible, it would be greatly helpful if you could share the dimensions of the machine you built. I live in Brazil and am interested in building a similar unit for home training. Thank you in advance for your attention!”
Thank you for watching. The pipes of seat and foot rest are same size. Their outside diameter is 25.4mm ( 1.0' ), wall thickness is 1.6mm. And sheathe pipes are 31.8mm ( 1-4/1' ) od, thickness 1.6mm. Thank U.
The outside diameter of main wheels are 65mm, guide wheels 38mm. Make reference to www.hammer-caster.co.jp/catalog/html5.html#page=361 Main wheels are 429S-NRB φ65 on page 326, guide wheels are 429G-N φ38 on page 324 . Main wheels have ball bearings inside. Guide wheels have no ball or roller, just through holes. Visit my new you tube " Homemade Leg curl & extention Machine "
Thank you for watching. Pulleys don't have any groove, only run inside guide rail C-channel. Trolley pulley wheels can not be lifted up anytime with their weight ( including barbell plates ).
Thank you for watching. About measurements, see the reply to Sr. Caique and Mr Aldimo. Bolts at the corners of main triangle structure are M-10. Fixing bolts for chair pipes are M-8. ☀Q.
Thank you for watching. Yes, I'm using MIG machine as Semi-automatic welder with no gas. So I removed shroud which protect gas diffusion. This method is much convenient for cramped corner. But there ia a insulator at the base of wire tip. Thank U.
Cross section size -- sled / □40×40×1.6mm -- guide rail / C 75×45×2.3 -- base frame / □50×50×2.3 -- support post / □40×40×1.6 -- weight hanging bar / Φ27.2×2.8 Length : See the reply to Mr. Aldimo
It would be interesting to see lol. I had to look closely at that tube if it’s bent 90 to flat and 90 again it would be pretty strong but it’s too hard to see exactly. I would build it out of box tube and have the sled mounted on top then you could weld angle iron down the length of it to hold the sled in place.
Thanks a lot for watching. I had been a civil engineer for fifty years, designed many infrastructures. So structural caluclation is my field. As Joshua remarks, I designed it's maximum load 200kg. You are exactly right. Guide rail is made from C-Lipped Channel. It is popular in Japan. Also can be bought in US. Thank U, Joshua and Andrew.
@@竜卷男 Ah, I see great job fabricating not a lot of working engineers left. I am a welder/fabricator working on nasa,airforce and military contracts. I have an orbital bender etc in fact I think you have most of the same types of equipment I used for my side jobs.
