Roth Engineering
2011 World Championship competitor
| Builder | Lasse Sundberg |
|---|---|
| Owner | Lasse Sundberg |
| Location | Upplands Väsby |
| Country |  Sweden |
| Bike Name | 1668 |
| Year/Model | 2011 |
| Engine Make/Size | Husqvarna 550cc side valve 1923 |
| Drivetrain | Husqvarna 3-speed 1923 |
| Frame Make/Type | Roth Eng. Single loop. |
| Front End | Roth Eng. Druid. |
| Rake | 48 degrees. |
| Swingarm | Rigid. |
| Wheels Front | Clincher rim, Jammer hub. |
| Wheels Rear | Triumph rim, HD front hub. |
| Tires Front | Firestone Racing. 28x2 1/4 |
| Tires Rear | Avon. 4.00s19 |
| Brakes Front | Roth Eng. outside band brakes |
| Brakes Rear | Roth Eng. outside band brakes |
| Painter | Airbrush studio Stockholm. |
| Chroming/Plating | Bålsta Metallsliperi. |
| Additional Info | Carb: Amal premonoblock. Floor boards: Husqvarna 1920. Left clutch, right brake. Handlebar: by owner. Left shifter, right throttle, operated by links. Grips: Husqvarna 1920. Stainless exhaust: By owner. Seat: Brooks. Alternator: Indian 12v. Belt drive: Harley Davidson FXR. Narrowed. Front pulley from old top fuel bike. Hydraulic/wire brake system. Hydraulic clutch. Front light: Indian 1915 side car. Rear light: Phone switchboard indicator light. Druid type front end, frame, rear fender, brakes, fuel and oil tank, battery box, controls: By owner. Oil system modified from total waste to circulation. Engine bored to 600cc. Ignition: Thunder heart twin cam. Coil and ignition box in left tank. Ignition adjustment made with laptop. Crank sensor HD, trigger plate by owner. Everything handmade. No CNC used. |
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