In this video, I'm going to show you how to use, and tune a Chainsaw/Pumper carburetor on motorized bicycle engines. If you want to see how I got to 50mph from 20 to 35mph doing upgrades and mods; check this video out: https://www.youtube.com/watch?v=SkX3zE5lqJg
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Intake manifold that I used is 40 to 47mm intake manifold on eBay.
20.7mm Stihl 090 / HL-324A carburetor: https://amzn.to/3C7l4QS
Other lists of pumper carbs: https://pastebin.com/D0cw9kuf
Around 11:55, this applies the same for full throttle, just work on each screws one at a time basically.
0:00 Intro
1:06 Problems with Jet Carb Clones
3:16 Why I switched to Pumper Carbs
4:44 How carb & pulse port work
6:35 How to setup the throttle
7:48 Setting up pulse port (non-reed engine)
9:29 Setting up pulse port (reed-valve engine)
10:03 How to tune pumper carb
13:12 Tuning the carb & going 50mph+
#motorizedbike #2stroke #bikelife