1 pointPosted in my other thread about how I was looking to upgrade my Thin's brakes, and do the 3-speed conversion. After shopping around for all the parts I would need I got the itch to change up a few other things I've been wanting to improve. So I'm going to use this thread to document all the upgrades and ask any relevant questions pertaining to the overhaul. Hopefully others can also benefit from my trials and tribulations. As things stand right now, here's what I have in store for my bike: 1. 3-speed conversion with two higher gears for increased top speed. 2. Upgrade both brakes to 203mm disc units - the parts are cheap enough and I'm going to be taking the rear off to do the 3-speed conversion anyway, so no reason to not upgrade the rear too. Probably more brake than I need but I'd rather have the best braking possible if I'm going to be increasing my top end. 3. Front suspension fork - the fork that Sondors sells seems to be made only for the Fat bikes (I can't find pics of any Thins with suspensions forks), so I'm going to do some research into finding a fork unit that will work with my Thin's wheel and can still accommodate the 203mm disc rotor. 4. Front wheel replacement (TENTATIVE) - I understand that installing a suspension fork raises the front end of the bike a bit. My Thin is already a very tall bike for my size so I'm considering installing a smaller diameter front wheel to offset the increase in fork length. If I go this route, I will probably want to install a 3-spoke mag wheel to eliminate the thin spokes and clean the bike up visually. 5. New handlebars and grips - I've always loved the BMX style handlebars with the cross brace. Will probably go for a low-rise, 3" unit in matte black to it flows with the rest of the bike. The bars are 7/8" (22.2mm) in diameter so I'll have to change my stem too. Can't find a threadless stem that has a 22.2mm clamp on the end, but I can get one with a 25.4mm clamp, and use a set of shims to grab hold of the 22.2mm bars. To keep the new bars at the same height as the stock Sondors bars, I'll be eliminating the steerer tube spacers and cutting the tube down accordingly. Some moto-style waffle grips should finish the look nice. I'll probably fabricate a bracket or custom shims to mount my LCD to the cross bar. Maybe even put a foam pad on it to give it that old-school Huffy look.
1 point@Lyndon445 Installing larger rotors must be accompanied with the appropriate adapters for that size rotor and type mount of the caliper.
1 pointNo, the 203mm rotors fit without any modifications whatsoever. It's a damn tight fit when it comes to clearing the fork and the kickstand, but both rotors fit with about .100" clearance which is plenty. I've put plenty of miles on the bike since the conversion and have not had any issues with the rotors gouging the fork or frame. Bike has been running great the last two months. The mechanical brakes are more than adequate so I doubt I'll be upgrading to hydraulic. The bike is just not as fast as I was led to believe it would be following the 3-speed conversion, so I don't see myself investing much more money into it, even when it comes to motor, controller, batteries, etc. If anything, I actually see myself converting the bike back to a single speed. I currently only use the tall gear all the time to get around. Was having some derailleur adjustment issues and the chain was jumping off the tall gear and jamming itself between the gear and the frame. Left it in the tall gear with the intention of adjusting the derailleur later, when I noticed I never felt like I needed to switch into my lower two gears. I've gotten used to the feel of the heavy gear, so I'll probably be switching to a single speed freewheel, shortening the chain and ditching the shifter/derailleur. Another thought that's been bouncing around my head: I love my Sondors. It gets me places quickly and with minimal exertion. But it's damn heavy, and I don't feel comfortable leaving it unattended for more than even a minute or two. So there's a lot of places I can't go to with my Sondors and opt to walk instead. So I'm thinking about buying a dirty, cheap, used bicycle. Maybe a 20" BMX or a fixie. Something that costs no more than $50-$75, is covered with stickers, superficial rust, etc. that I can use as a backup transportation to the Sondors. The BMX would be nice to take onto the subway since it will be small and light. Probably leaning toward that style of bike.
1 pointGot my Dremel tool in and I've been cutting my rear lines to length. Didn't realize until I was setting up by shifter cable that using the left side shifter for the rear derailleur means it will work in reverse; pulling the shifter cable (moving it toward the "+" direction) will actually pull the chain onto the larger cog, which means it will actually be downshifting. In its neutral state it springs outward, toward the smallest (highest) gear. Crunching some gear ratios real quick: Stock ratio = 40:16 = 2.5 Using my 56T chainring and my 16-19-22 freewheel I get the following ratios: 56:22 = 2.55 56:19 = 2.95 56:16 = 3.50 So my lowest gear is comparable to the stock ratio, with two higher gears for higher speeds. Exactly what I was hoping for. Cut a slot into one of my stripped front rotor bolts, and the damn thing still won't budge. Going to take it to a shop and have them professionally removed. I'm done fighting with them. No word yet on my suspension fork.