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steven brock
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« on: December 22, 2010, 11:02:08 AM » |
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hi ok getting to the point now where i need to start thinking of a frame so what tube size do people use i was thinking of using big tube diameter tube like 42.4 with 3mm wall buying bends of certain degrees off ebay and using 36mm 3mm wall tube as joiners anyone tried that sort of kit style frame build?  ta newbie steve |
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steel wasn't invented to make bloody staples with!
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tbone
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« Reply #1 on: December 22, 2010, 11:36:51 AM » |
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Never tried it but did think about something similer a while ago on a bike frame. I think it could look quite cool, going for a `plumbed`look, especially if used in conjunction with a steam punk theme  |
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NO I WON`T. aye ok then, i will
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steven brock
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« Reply #2 on: December 22, 2010, 12:54:45 PM » |
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could be quite handy for setting up frame straightness etc almost self jigging if i work it out right! ummm
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steel wasn't invented to make bloody staples with!
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Plasticpig
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« Reply #3 on: December 23, 2010, 12:39:09 AM » |
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Like these. Nicked off the Jockey Journal Forum.  frame tube size  frame tube size |
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tbone
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« Reply #4 on: December 23, 2010, 04:29:52 PM » |
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Dam! beaten to it again.....maybe there is no such thing as an original idea any more  |
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NO I WON`T. aye ok then, i will
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Plasticpig
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« Reply #5 on: December 23, 2010, 07:19:39 PM » |
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Yeah, Indian were doing it for years. No reason you cant do it though.
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zakboy
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« Reply #6 on: December 27, 2010, 07:59:24 AM » |
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hi steve,i don't think theres any thing wrong with taking the idea of using preformed tube bends in your frame ,but i think you may find most of the tube bends on ebay will only have a 1.5 mm wall you may find 2mm but that's still not enough, but if you can find a source of tubes with a good wall thickness i think theres an advantage to using these tube bends by bending the tube your self you are weakening the outside of the bend by the stretching that happens when bending, if you can find tube bends with good wall thickness eg ( bigger than the straight tube you use for the rest of your frame) then i think you will have good strong joints it may be a little expensive as preformed tube bends don't come cheep, but what one wants to spend is down to the individual, i think it will also give it a kind of pleasing overall look. and as you can see from plasticpigs pics its already a proven tested idea.i have also seen this method used in the building of roll cages. go for it son.zak
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« Last Edit: December 27, 2010, 08:57:58 AM by zakboy »
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Give me the strength to except the things in life i can not change
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zakboy
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« Reply #8 on: December 27, 2010, 11:42:43 AM » |
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i think the point i was making to steve, has nothing to do with the costruction of roll cages or there like, or any standards set out for the building of them,the point i was making to Steve was don't dismiss your ideas with out (constructive criticism) as to why the idea is not a good one, or why the idea is just not going to work .zak
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« Last Edit: December 27, 2010, 03:43:08 PM by zakboy »
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Give me the strength to except the things in life i can not change
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zakboy
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« Reply #9 on: December 27, 2010, 12:24:53 PM » |
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thats a useful link you have put up there terry |
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Give me the strength to except the things in life i can not change
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tbone
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« Reply #10 on: December 27, 2010, 08:31:22 PM » |
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So why would a tube welded into a preformed bend be any weaker than any other welded joint?
Surely the weld would mearly be to hold the tube in the bend, and the preformed bend would itself be as strong as any tube bent in a bender, if not stronger, given the larger diameter tube needed.
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NO I WON`T. aye ok then, i will
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zakboy
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« Reply #11 on: December 27, 2010, 08:40:17 PM » |
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well turbomangler i think to refer to some ones idea as being (the worst idea you have ever heard) is not constructive or encouraging to some one who is just starting a project,i have broad shoulders so can take none constructive criticism all day long, I'm a big believer in that politeness is no weakness, as for the comment to terrys link as being useful there was no mention of the reason i found it useful, all your doing hear is detracting away from the comment you made about some one Else's idea,and going on about things that have no relevance to that comment witch is the real point hear. zak
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« Last Edit: December 27, 2010, 11:36:14 PM by zakboy »
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Give me the strength to except the things in life i can not change
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Manky Monkey
Administrator
Hero Member
Karma: 264
Posts: 55102
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« Reply #12 on: December 27, 2010, 08:40:48 PM » |
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Gentlemen!
Keep it friendly & fluffy please.
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On the last freedom moped out of Nowhere City.
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zakboy
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« Reply #13 on: December 27, 2010, 08:54:42 PM » |
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yes m.m no prob
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Give me the strength to except the things in life i can not change
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Plasticpig
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« Reply #14 on: December 27, 2010, 10:34:23 PM » |
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Just a comment. Here is a picture of an Indian model 441 frame. Sorry it is not too detailed, but you can see the brazed in 90 degree joints. Granted the bike was only 40-odd hp, but brazing was and still is as good as any other method of joining if done properly. I googled elbow bends from pipeline suppliers, and came up with a hell of a lot of chinese & korean ones. Dunno what happened to good old british products. I personally would not like to use a roll cage made of seperate pieces, and I thought there were rules against using them, but then I'm not up on scrutineering practices. http://i471.photobucket.com/albums/rr71/reliantman/framejig.jpg |
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