5 Of The Worst Motorcycle Engines Ever Made
- Okay, here's a breakdown of the information from the provided text, focusing on the elaborate/problematic engines discussed:
- * Complexity: Considered one of the most complicated bike engines ever made.It featured a V4 engine with oval pistons and two connecting rods per cylinder.
- * Complexity: A 500cc two-stroke V-twin with direct fuel injection - the first of its kind on a production bike.
Okay, here’s a breakdown of the information from the provided text, focusing on the elaborate/problematic engines discussed:
1. Honda NR500
* Complexity: Considered one of the most complicated bike engines ever made.It featured a V4 engine with oval pistons and two connecting rods per cylinder.
* Problems: The complexity made it incredibly expensive too produce and maintain. It was a technological marvel but impractical for mass production.
* Key Feature: Oval pistons were designed to mimic the performance of a higher-revving engine while staying within racing regulations.
2. Bimota V-Due 500
* Complexity: A 500cc two-stroke V-twin with direct fuel injection – the first of its kind on a production bike. Ferrari engineers assisted with the injectors.
* Problems: The fuel-injection system was deeply flawed, leading to misfires, erratic throttle response, and engine seizures. Even a switch to carburetors in the Evoluzione version couldn’t fully fix the issues. Later race versions (corsa) had crank seal leaks and crankshaft failures.
* Outcome: Bimota recalled around 150 units from owners. The bike’s reputation was severely damaged, contributing to the company’s financial troubles.
3. Harley-Davidson Twin Cam 88
* Complexity: 1,450cc V-twin with dual chain-driven camshafts and a direct-mounted transmission. Intended as an upgrade over the older Evolution engine.
* Problems: Early models (1999-2002) were plagued by a fragile plastic cam-chain tensioner. Flaking plastic woudl contaminate the oiling system, leading to engine failure.(The text indicates there were other issues as well, but doesn’t detail them in this excerpt).
* Reputation: Considered one of Harley-Davidson’s most controversial engines, failing to live up to its promise of reliability.
in essence, all three engines represent attempts at innovation that were hampered by significant engineering or reliability issues. The honda NR500 was too complex for practical use, the bimota V-Due 500 suffered from a fatally flawed fuel injection system, and the Harley-Davidson Twin Cam 88 had a critical weakness in its cam-chain tensioner.