In Progress
Lemon Bomber
This sweetheart of a 1975 TC100 is getting a refresh, a full electrical revitalization, and will become Yellow Bomber’s little sister.
SuzukiTC100
History
No clear history on who originally owned this bike, but it eventually made its way to a good buddy of mine. I had given him a Yamaha QT50 to go along with one he already had so him and his partner could go ripping around together. With a growing pile of projects — something I’m clearly on the verge of myself — he passed this one along to me. The bike is fully complete, minus a signal light. The tank doesn’t have a single speck of rust, if you can believe it. There’s some suspicious oil wetness that could point to a crank seal, but I’m hoping it’s just oil from the reservoir or pump — that’ll be investigated. It’s got very low mileage (I’ll update that once I actually look again), and the seat is in great shape too. I’m looking forward to getting this project underway. My partner has already shown a lot of interest in learning to ride on it, so that’ll make this one even more fun
Project details
Preliminary investigation is underway. Cylinder is free — not in great shape, but I’ve definitely seen worse. Compression test is still on the list, but I was held up early by a no-spark issue. Tracked that down pretty quickly: the plug wire at the coil was basically headless Nick. Attempted a repair, but there may be more going on. The good news — I’m getting voltage spikes from the points wire while kicking it over, and both the ignition and kill switch are confirmed working. A replacement coil is on the way (cheap fix at ~$30), so that’ll eliminate a big variable. Next step is getting access to the points. I’ve got a piston stop tool on order so I can pull the flywheel properly and go through everything behind there. A couple other findings: • Shifter lever is snapped at the splined clamp — going to try welding it before sourcing a replacement • Throttle is seized solid (no surprise after 20+ years sitting) → carb rebuild incoming Not all bad news though — the tank is mint inside. Zero rust. That’s a big win on a bike this old. More to come once I get spark sorted and dig into the carb.
Sections
Carb
The Lemon Bomber is running a Mikuni VM20 carb. Current jetting is a 200 main and a 22.5 pilot, which appear to be stock or very close to it. When I first tore into it, the carb…
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Project info
Status: In Progress
Slug: lemon-bomber
Created: March 21, 2026
Last updated: April 05, 2026