Wrong Do It Again Wrong Do It Again
The rear wheel stay didn't work out quite as I had planned as it didn't give me enough clearance from the bicycle without looking a bit crap. I decided to still utilize the rear part from the brigand bit but cut a length of ¾ inch foursquare box to extend information technology to the mounting point. I still have to weld on end caps to the pieces of tube just it looks a lot better than the kickoff endeavour. All the minor fettling volition be dealt with when the cycle gets torn down for paint, nothing will be finalised until I know everything fits. In a build like this things can change quite apace so I don't want to waste loads of hours on something that ends up on the fleck pile.
Next job to nourish to is the front footpeg mounts, I take at last received the hex steel bar that I ordered nearly 2 weeks ago so I have what I demand in stock to get the job done. I volition be using ii lengths of the hex and some apartment steel sheet to complete the hob. The hex bars volition have 6mm tapped holes in their outer ends for the footpegs to bolt to – these were found in Scottie's infamous scrap pile and will exist ideal for the task. The steel canvass will exist used to stiffen it all up and make sure they are very deeply fixed to the frame, final affair yous want is the right paw one falling off when giving the rear break a good dose of size eleven boot. To make absolutely certain I am going to put a brace right across the frame and weld it all together then there is no hazard of it coming autonomously. I still have to finalise how I am going to practice that so in the mean fourth dimension information technology's on with the sissy bar.
The builder of the frame had made provision for a sissy bar to mount on the frame downwards about the rear wheel spindle so that saves me a job. The claiming is to build ane that looks decent simply doesn't cost very much coin and so chrome plating is out. Fortunately my local metallic fabrication place always has a fine choice of offcuts so this one is going to be ¾ inch foursquare box steel, I will pigment it either black or silver when information technology is done. The method I like to use for such constructions is the same method I used to build the spaceframe chassis for the little race car I built – furniture blocks. Yes, those little plastic blocks that have screw holes in them that are supposed to be used for holding inexpensive shit furniture congenital out of chipboard together. I utilize a sail or two of chipboard or similar on a flat surface, I advisedly measure and depict the outline of the piece I want to make and so cutting each individual piece to the design. The plastic blocks are used at strategic points to hold it all together. I tin can then stand up dorsum and have a check to brand sure it looks like I want information technology to before welding it all together. It'due south very unproblematic just very constructive, as I said I once congenital a whole automobile using this method and it came out perfectly square.
Kickoff matter is to establish the disquisitional dimensions – the width at the mounting points, the top of the back wheel, the width for the seat rear mountain, the overall pinnacle, that sort of thing. I too need to constitute where the rear light and number plate volition fit then I can incorporate the mounts – it'due south much easier to design this all in from the get-go and make it while information technology is flat on the floor. Where I tin can I similar to make each piece of metal serve more than i purpose eg the seat support may too be the rear light back up or something – I'll run across how it shapes out when I get on with the chore.
Every bit I started to draw it out I fabricated a couple of changes , which iis far better done now than when y'all are cutting or welding. I dear doing this sort of stuff, just starting out with an idea and evolving information technology in to something y'all really similar. I tack welded it when all the parts had been cut and and so fully welded it to make sure it is good and potent. It won't exist taking whatsoever existent weight autonomously from the lower seat support which will have the full weight of the pinion on it. Now is a practiced time for a word of warning. When I was building my car I was a member of a web group where all things to exercise with the cars would be discussed at length. 1 lad spent forever and a day welding his chassis and then spent equally as long grinding it all down so information technology was all super shine. He too ground all the strength out of it, something he noticed when it literally brutal in one-half. But worth bearing in mind.
Anyhow here's the fully welded article consummate with the really cool chrome low-cal that Ian found.
It still needs the mounts welding on to it, that will have to await until next time.
Article provided by David Powell of Boston Bicycle $.25.
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Source: https://classic-motorbikes.net/junkyard-dog-part-7-wrong-do-it-again/
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