![]() Basically I want a tough vintage style bike with some modern parts and 'fun' riding characteristics to blast around on. There is a brewery (Bauhaus Brew labs for those interested) about 15 miles from my house that hosts a very fun motorcycle night the first Thursday of each month, and the goal will be to take this bike there and hit some dirt trails along the way. I'm tempted to get a 3-speed internal hub because I want to be able to ride this bike 10-15 miles pretty easily. At the moment I'm thinking about building a set of Sturmy Archer drum brake hubs to some aluminum rims, some nice knobby tires and bmx-style bars. So in keeping with GRM Fashion I am starting this build thread before even having the project in my hands. Should be great for blasting off curbs and through the dirt. I'm excited about the Heavy Duti in particular because it's an extra-beefy version of the classic Schwinn Middle-weight cantilever frame. Interestingly, one of the guys involved in this was Gary Fisher - which is actually the brand of my daily commuter/mountain bike. For those unfamiliar, Klunkers were converted cruisers with knobby tires that pioneered mountain biking back in the mid 70's. This will be the basis for a Klunker style build. This particular thread is going to be for a bike I do not have yet, pictured in the Facebook Marketplace ad below:ġ980 Schwinn Heavy Duti. This summer I've commuted to work 20 miles round trip a few times a week and gone out for plenty of beer/exploration missions on the bike as well. I've always enjoyed bicycles and without a project car I've found myself gravitating back to them which has been a welcome change. Bicycles were my first passion, I've been riding BMX since I was 10, worked in a bike shop for a decade, etc. So, in the meantime I've been riding and building bicycles a lot more. Anyways, after the 97' Civic I've been trying to take a 1 year hiatus from project cars (June 10th 2020, not that I'm counting). Many bikes just weren't built to go fast.This will be my first thread in the 2 wheel forum - I'm usually creating long drawn out threads about refreshing boring cars. It's like the guys with their fat bikes looking for speed, so I show them a regular mountain bike or a road bike. If you want an easier to ride bike, get an easier to ride bike. As will a smaller ring, longer cranks, lighter aluminum rims, new tires. Best to use high quality stainless steel cables and teflon lined housing and use a very slippery lube inside.Īs suggested, a bigger cog will make it easier to pedal. I've only ever seen 1 rear seat bridge adapter.īrazing on mounts for canti or v-brakes isn't very practical.Īnother issue is due to the all curved tubes on the frame, you usually need to use full length cable housing which has lots of drag. I have a middleweight 3 speed with a front bracket ($250 & $150 shipping). Some older models had bolt on conversion brackets for caliper brakes. And for just a relatively few units? Wouldn't happen for financial reasons. I'm sure it would take more costly machinery to make and form heavier tubing. The Schwinn ef bikes are so heavy and bomb proof to start with. I suppose the best way to check would be to completely strip the bike down and weigh the frame and compare with a known regular frame. i've never seen any info on heavier tubing. Other variations were tabs for tanks and the King Size frames. Normally used for the 3 speed models, I've seen some single speed bikes with the elevated bridge. Those that were intended to be 3 speeds with hand brakes had flat metal elevated seat stay bridges with a hole for mounting the caliper brake and a fork with an bit of extra crown that had a caliper brake hole. There were variants of the standard middleweight frames. Far more $$$$ than just buying a new 7 speed cruiser many of which used a 7 speed igh with built in brake either foot coaster or cable activated band or drum. I can only imagine what a similar conversion would cost now. I used a pair of drum brake hubs on a Typhoon I converted. ![]() Most don't have the holes in the fork or seat stay bridge for caliper brakes. The main issue on adding gears to the middle weights is brakes. ![]() Schwinn had a number of heavy duty models like the "Heavy Duty American" and the "Heavy Duty Wasp". thicker spokes, fatter spoke nipples and rims with larger spoke nipple holes. They used the wheels from the Schwinn Twinn tandem. ![]() The "Heavy Duti(y)" designation usually refers to the wheels. ![]()
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