brunson67

Schwinn 1975 BMX Scrambler(aka Stingray)

Funny, there's another thread going on, is a Stingray a BMX? (Of course) look at the 1978 Stingray factory BM. Looks like what the first BMX bikes looked like.

Candy Green survivor

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1979 Team frame Comp Scrambler

Coming in late on this: 1976 was first year for the Competition Scrambler. It was made in the Paramount building, also known as the Dungeon. This building was where they hand built the high end track Paramounts, do highly sought after now. The Comp Scrambler was chromoly, hand brazed, hand made. They used Shimano extra thick track drop outs reversed for BMX use. Schwinn also used the seat post tubing from the Paramounts whick requires a 26.8mm seat post, and matching clamp. Very steep head tube angle and laid back seat post tube. There are not to many of these, when parents went to buy a Schwinn BMX, this bike was considerably more than the Stingray and the Mag or 36/36 Scramblers. In 76 they were available as completes in Sky Blue, Flamboyant Red, silver mist, and an upgrade to chrome. Completes had chain guard mounts, frame only's had no chain guard mounts, like my survivor 76. Frame only's were available in the standard above mentioned colors and chrome, as well as black and candy green, also believe yellow. I've never seen a black, there are two green survivors in the BMX Museum, and I believe there is a yellow in Joe Buffardi's picture he posted earlier in the thread. I just saw my first chrome posted in the museum this year, December 2014. Schwinn made this bike for 76 and 77, in 78 they offered the SX1000 Comp Scrambler(with gusset), and the standard Comp Scramber(no gusset), in 79 the original no gusset Comp Scrambler was dropped as a complete, but still could be ordered as a frame only. One of my favorite early BMX bikes.

This is awesome! I grew up going to the Corona Raceway as well as the Norco YMCA track.

I can imagine a kid riding this thing through mud puddles, jumping off curbs, launching off a plywood ramp with stacks of bricks under it. Nice build Joe, love the seat, your Son will dig it. My son just took ownership of a 1979 Schwinn Mag Scrambler, Spicy Chesnut with Yellow tuffs, I built it as a tribute to my bike I had as a kid, and he fell in love with it. He doesn't care the other kids don't get it, cuz he get's it and loves the old stuff.

joe thats the one i was telling you about on sat.. Joe told me someone had mentioned they saw this frame on Ebay.

Just plain bitchin!

The Manganese Phosphate is correct. Ashtabula Forge called it "Black Magix finish" as a marketing tool. I would also do an evaluation of the finish on these parts as well if there is not excessive rust on them maybe a good cleaning and oiling is in order. If you do refinnish them it is best to powder blast them clean first to make the surface of the part uniform before coating. this will give the best results. also do not be suprised if the finnish on the redone is a little less corse that the finish of an original part. todays phosphate formulas are more refined tham the stuff originally used by ABS. Thanks sodbuster, yeah, we have a glassbead blaster at work, this is what I use before any type of refinishing. The cranks, stem, and forks all need re-finishing, cranks are orange from rust, and the stem and forks have numerous coats of flat black paint on them. I have almost everything I need to put this goose back together, should be cool when it's done. I have three more 1979 Mongoose Motomag frames, but all of them need full restoration, so it was cool to get this one, and hopefully save the OG finish.

That would look really cool, maybe with gold irridite hardware! Looks like it is taking time, but that's what it takes, looks good.

32 Chassis my brother just finished, actualy the car is now running and getting interior. Yes, I'll let you know when I get the tank all built.

Thanks Joe, I recently ordered a Manganese Phosphate chemical kit, so I can duplicate the exact finish that Ashtabula used, prior to this I have used a small bath i set up and did black oxide,but that actually isn't correct for the Ashtabula stuff, it was Manganese Phosphate. I'm building a stainless tank big enough to do cranks, forks, and obviously stems. Should be up and running in a few weeks. But I did see somewhere where sodbuster calls it black magic or something like that, don't know what it is.