I'm getting a 3-piece crank to replace the heavy original 1-piece crank. So far, I found a Truvativ American to Euro BB adapter, Vuelta Pista Track 46T 165mm crank, and a Truvativ BB 68x108mm square taper. These should all add up to$98. So the question is: Would the 108mm spindle and the Vuelta crankset fit on the Schwinn and have a good chainline with the Alexrims X404, fixed gear wheel? I will TRY to post some pictures if you'd like. Please answer!

New Components (hopefully getting)

Truvativ Adapter: https://www.ebay.com/itm/Bike-BMX-Tru...#ht_2268wt_952

Truvativ BB: https://www.ebay.com/itm/New-Truvativ...0#ht_1202wt_57

Vuelta Crankset: https://www.ebay.com/itm/Vuelta-Pista...ht_2005wt_1185

It looks to me like you should have a good 42mm chainline.

Yeah, you'll be good. Putting all that stuff into a Varsity (or similar) frame may not be worth it though.

It's alright. I'm 14 and you know how reckless we are...

While it may not be worth it to other people, I say go for it, you'll have a ball with the bike, especially since its your creation.

Yup. Better than having a bike shop doing it and wasting money.

I did something similar with my first fixie bulid. I used a schwinn continental. Had a nice straight chainline. I quickly dropped the frame though. I wanted something lighter.
What Schwinn are you doing this to? the bikes above the continental would make quite nice fixies.

I sure had a blast with my Schwinn conversion. I kept the cup and cone BB though - it worked great even after 20+ years. I'm also curious what year and model you're converting. Unless it's something like a paramount it will still be pretty hefty.

There are two threads over in C&V about doing this on Schwinn Continentals. You might want to follow those threads also.

1979 Schwinn Varsity, 21"

1979 Schwinn Varsity

38 lbs of schwinning.

I'd just roll the original Ashtabula BB/cranks. Get some good 1/2" BMX platforms with footstraps in there and tear it up!

Crank swap on a Varsinental just doesn't seem worth the dough to me.

Yup. That's my set-up right now but I don't like the huge chainring of my modded FF system.

Well. Not really. I had to remove the original seatpost, saddle, handlebars, brakes, deraileurs, and rear rim. As I said, I have pictures (that will be uploaded soon).

What? You've got Front Freewheel, too?

Nice!
I stayed with the stock BB, got mine down to about 30lbs:

Tons of fun to be had!!

Let us know how that goes, I was tossing around the idea but went with the gaudy wheels instead.

Yeah. What my uncle did was remove the FF (front freewheel) crank. On the crank he found a small hole which he could screw a bolt through a nut- which was welded on the chainring and connected to the crank.