Motorized Bicycle Builds - Crank Stroke Vs Rod Stamp Stop Being Mislead By Bad Info!

I get asked this 1000 times a month! Seriously lol! So many people go hey I have a AF80 Crank I just bought and since it's 40 mm stroke............. What? how you know it's 40mm stroke exactly? Well it says af80........ Sigh!
What people don't understand is the Rod stamp is just a value giving to the rod! Not to crank stroke! Has zero to do with rod stroke! So I hope this video clears up some of the BS out there posted by 100s of people over and over! It is bad info passed on to the next person that sends it along the chain. I see so many trying to make a nice build and then realize there stroke length is way off and they can't figure out why!
when ever you buy a crank You need to look At (stroke Length) not rod stamp! There is so many 36 and 38mm cranks out there with rods you all think makes it 40mm stroke! You buy them and don't even realize you just bought the same crank you thought you upgraded as a result!
So I hope this video clears up some of the common misconceptions out there!
Crank Parts Cheat Sheet! All you need to know for Weights and balancing one! • Motorized Bicycle Cran...
So I corrected the Engine Geometry Of this 110cc Kit! If you guys ever bought one you know it's a cluster of bad stuff! But main problem is timing so off cause bad Geometry of parts! So in this playlist I break it all down show you how I fixed this kit to become the monster it is now! • 110cc Motorized Bicycl...
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#diy

[@SamZStuff]

I tried explaining this to a engine seller and they couldn't understand.

[@diydarkmatter]

why you gotz to try to makes me dooz math . im not smart i dont read much book . lol . carry on young man you learn us good .

[@sealeyscience6181]

Hold up all these two strokes are different especially the Zeba right out the box no breaking I'm flying on it. Zl40mm the engine you have to break it in or the bearings in the bottom goes bad!! Chinese very big lot of factories different technicians stamp the rod with the name initials just like our rDM guy in Pittsburgh. Question if all 2-stroke are the same y is Zeba 80 $219 on eBay and all the engines are cheaper as you were

[@a.m.bgarage.everydayprojec9665]

Thanks for the video. Im heavily considering turning my YD100 to a Phantom 85, and was told that I need an af80 crank, cause it uses a 12mm wrist pin and its the same stroke and rod length. Now I know that's BS.

[@johnmachado72]

From the deepest bowels of my insanity. Thank you for this . 👍👍👍

[@boydjensen3161]

I needed that... Thanks, you do good work... No rest for the dudes that spray cold water on us poor motorized bikers, big bullies...

[@lindamorgenstein2032]

Aahhh haaa! Pretty cool information that clears that up! 😀 🙊🙉🙈⚙️🔩🔧

[@mrrednick81]

All the replacement cranks i have found on Amazon never have the Stroke length so even if it says zl40mm it might not be a 40mm Stroke crank

[@dustinh4175]

This helped alot thanks.

[@cornelrusu9789]

How can I split the crank in two using basic tools?

[@user-ko4te2cp2u]

Need to hey rod and conversion kit for hs 660 build

[@sup-kh3jh]

Hello,

[@ericwiederrick4686]

How can I match the bottom end to the ms460

[@grahammc88]

What do the 42mm cranks come on?