Technical & Reference Section > Tech and Restoration
The last restoration from me. The Pink Schwinn.
Midschoolfool:
Now that I am done doing the horrid part I can have fun. Some more of the jewellery came earlier.
I also drilled out the 1" top cap that came with the Ahead. Crown race doesn't fit, so needs fettling with the file. And yeah, I do have the tanky tool that smashes them on, but it ain't going on no matter what.
I also got a laugh out of the paint colour. I didn't even notice it before I just knew it was right. The last colour I had mine done in was "Hubba Bubba". Look what this one is called :LolLolLolLol:
Midschoolfool:
Parts in. Sadly the pics I took of the top of the grips vanished from the phone. Will get another later.
Needs knarps.
Schwinnbling.
Midschoolfool:
FFS. Why is learning to use new materials so bloody frustrating?
So I printed two sheets of the decals thinking it would be more than enough. Sadly because it is foil it is really hard to cut. Meaning I was slipping into the colour stroke. So I printed a new set on the last sheet of gold with a fat stroke. I then cut them all out wearing gloves. I left them on the bed and went and had a shower. Must have dripped some water on them, and the small under belly decal ran. FERK. So, I ran a sheet through that had decals on but space, and made another. Yay, all done. I then put them away last night between two sheets of paper. When I got them out today? another one must have had a drip of water on too :( so that is buggered and of course I have none left. Have ordered more.
The good news is I had plenty left over to test clear coat on, and it was a 100% success :LolLolLolLol: Frustrating though.
Frame is now in white primer.
Wet sand and pink base coat tomorrow providing it doesnt piss with rain. And the pic of the grips I promised.
Midschoolfool:
Good things - the primer is excellent. Dried fast, wet sanded with P1200 very easily.
Bad things, and I knew this was coming - pink is a shit colour to paint in acrylic. The lighter colours are powdery (that said they are all like it, even 2k, especially neons) and it spat like a C U next tuesday. There wasn't much I could do, so I will have to wet sand that out. That said I would have to do that for two reasons. 1, it's powdery and 2, I am going to ghost stripe it so I need it smooth AF.
Wheels and nice goodies shipped earlier. I was worried they would not actually have the 1.6 tyres in stock, but it appears they did.
The pedals were delivered to the trust nextdoor to my flat, and I accidentally sent the gold print vinyl there too :rant:
What a pain. That said it will give the inter coats time to harden properly before I put the decals and clear on.
Midschoolfool:
Yeah she's as dry as a sand lizard's fanny :LolLolLolLol: But, it's well coated and wet sanding should fix it quick. Most of it is just over spray, this frame has some tight angles and is a sod to get into.
Can wet sand it out tomorrow. It says 24 hours.
I don't know what is going on ATM, but my brain seems to be working really well. Had a think about the V brake and the scenario of it not reaching. I then had an amazing idea.
As I said in a previous post I am CNC mad. I absolutely love engineering and design etc, and all of my close friends IRL are also. I would say that George French is one of my heroes. Mostly because he put his brains and talent into making bikes work when they were really poor (early 90s, no one seemed to know how to make bikes that didn't keep breaking). Any way, I had the "What if the V brake is too short?" scenario going through my head. I also had the spongy feeling going through my mind also, and why I would never even think of putting a V brake on the front of a BMX. And then it hit me.
OK, so let's assume that the brake arms are too short to clear the tyre and plan what to do. TBH? I am almost hoping now that they are and I get to put this plan in my brain into motion :LolLolLolLol:
OK, so take the brake hole in the fork into mind here. This one.
Then lets look at how a V brake is set up.
That's obviously a long one. So, if mine is too short and doesn't clear the tyre what can I do? well I thought not much, but my brain had other ideas. What if you could use the brake hole in the fork to divert the cable around the tyre? and if you could how in bugger's name would you achieve such a feat?
The answer took me back to George. Something some people would not even think of let alone try, but in reality is crushingly simple. A pulley.
Now obviously that won't work. For a couple of reasons. 1, it will be too close to the fork for the cable to work properly on. The cable goes into left side of this pic.
And would be off axis because of the distance between the arm and fork (this one)
But what if you removed the roller wheel from the item above and then made something like this. Now please bear in mind this is crude, as I CBA going into Fusion or anything like that.
The funny thing is that entire assembly other than the fixing bolt can be machined from, well, a single larger bolt put in a lathe. You could then bring the cable into the left arm, run it in one single piece up and over the roller cam and then back down into the other arm. Gaining you clearance over the tyre, and a rolling cam in the middle of the two arms massively increasing braking power.
Gentlemen, I may have just invented something :LolLolLolLol: Good thing I got a mate with a lathe, huh? BTW don't worry about the cam being too shallow. He has a lathe, he can machine one deep enough to make sure it never falls off.
What did they say about necessity?
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