4 Stroke Bicycle Engines & Kits4 stroke motorized bicycle engine kits are great if you want reliability or do not want to mix your oil and gas. Learn from each other how to get the most out of your 4 stroke bicycle engine
YES!--i now have my new 4 stroke Robin-Subaru engine 35cc Staton gearbox . Iam really impressed- it is the perfect balance between pedaling and motoring for me- and fantastic mileage -3 days ago did 70 miles with hills on gravel roads half the way for $1.30 gas-i also have a Morini SCSW 2 stroke full suspension and have had 2 Happy Times 50cc engines on two seperate bikes.
They are good kits. The transmissions were first used on motorized wheelbarrows and handle 2000 pounds with ease. I assume Dave changed the gear ratio before he started selling them for bicycles. I used them on my bike/planes that weigh about 500 pounds with trailer in tow plus my 220 pounds-- I promise you'll never break one on a normal MB.
Can't say anything bad about the 33cc Robin engines either. I put over 5000 miles pulling that giant load all over town and the Robin never used a drop of oil. The original clutch is still in it-- never opened the case. The bikeplane is worn out so I'm planning to put the Robin-Staton on a regular bike.