Motorized Bike Crankshaft Types (2 strokes)

[@mikemiller3303]

Thanks for the informative video 👍👍

[@keeganhache6667]

Glad it was helpful!

[@jgfpv3179]

Really needed this info bro for a minerelli build 🤙 much apreaciated

[@keeganhache6667]

Glad I could help bro that’s why I make these videos

[@JamesEgly]

Keegan, that old short rod, short stroke crank, do the magnet shaft have a thicker diameter making it hard to even fit a new magnet on the crank?

[@keeganhache6667]

I found the magnet did come off hard yes they could have been a little different

[@MotorizedChuck]

What are the better engine case seals?? I replace my bearings with the 6202ks 3 thank you for that

[@MotorizedChuck]

Viton I got them thru Smolik

[@tiger7777]

Thanks again Keegan. What is your favorite China doll engine.

[@keeganhache6667]

Probably the 49mm iron sleeve cylinder because it got me into port work

[@tiger7777]

@@keeganhache6667 What would recommend for me to get a new engine? I've had 2 BBR 66/80 that were good. 1 BBR 66/80 that l put 3cylinders and 4 different positions in and different mags and replaced ignition coil 2or3times and it never has run right a 4 different carbs (the ones that come with the kits). Have had the phantom, it lasted 48 miles and seized up. The 100MAX which ran great it just started getting hard to start after turning it off. And had a scratch in the cylinder and bicycle engines don't sell parts for rebuild.? The engines last 9 months to a couple weeks (not including the phantom which was 6 heat cycles and almost 1full trip to town and back 37 miles) are the zeda 80s any better than BBR stage 4 engine?

[@tiger7777]

@@keeganhache6667 also, what is the 49 iron sleave called

[@keeganhache6667]

@tiger7777 just get a Amazon engine put good crank bearings in it and don’t waste money on a engine with just a sticker

[@tiger7777]

@@keeganhache6667 thanks

[@JamesEgly]

So i see the 1/2" hole 15mm deep, a 3rd center hole in each crank web. Have you found this method helpful and does it work on short rod 40mm stroke cranks, long rod 40mm stroke cranks and 38mm stroke cranks?

[@keeganhache6667]

It does help with vibrations in the higher rpm’s

[@bryduhbikeguy]

Thank you.I thought there were just 3 rods. I knew there was some differences in thickness of the weights,but not position of the rod pin.

[@keeganhache6667]

We’re all learning in this hobby even myself

[@notsure2024]

Also 37mm cranks

[@keeganhache6667]

Yup!

[@tmmedia1069]

hey man i have a question im getting a new engine because my previous 80cc engine blew up so im getting a new 100cc one im just not sure if it would work because my 80cc had 16:1 final drive and my 80cc had 44 tooth sproket will be using same sproket and chain 315 chain whatever it means and my 100cc new engine will be 18:1 transmision will this be compatible please help i may have more questions

[@keeganhache6667]

Well as long as their both 2 strokes it should be fine there’s like 3 different 100cc kits on the market right now

[@zachtenbensel1440]

Some zeda-80 are 38mm. I never go off rod anymore. Only measure to know what you have.

[@keeganhache6667]

It’s always good to double check with a Calliper

[@leonardarola]

Short for the Piaggio, long for the 60mm Farmertec jug.

[@keeganhache6667]

60mm? Wow

[@Bill32brown32]

Skyhawks are the best motors just my opinion

[@keeganhache6667]

They do have nice case half’s more beefy then a standard one