What 4 stroke for my first build?!

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TheNecromancer13

Active Member
Jan 21, 2015
610
25
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Portland, Oregon
Better option would be to use the 79cc, but not get the kit. The predator kits do not come with everything you need to build a bike, and what they do include is marked way up so the seller can make a profit. Also the predator kits have no instructions. If you want to build a predator bike, build it from scratch. I have made a tutorial on how to do this which can be found here: http://www.instructables.com/id/79cc-Motorized-Bicycle-From-Scratch/
 

KCvale

Well-Known Member
Feb 28, 2010
3,966
57
48
Phoenix,AZ
Ya, that frame is a gasbike cheap knock-off of the real Grubee Skyhawk frames, for example no rear disc mount.

I want to put a 4 stroke on thats over 50cc because I live in a very hilly area. I'm looking at the predator 79cc kit right now,
but im still wondering if theres a better option out there.
Any input or suggestions would be much appreciated.
Thanks
Yes, there is a pretty good 'other option' now, well soon as I have a heath issue right now.

The 49cc or 53cc are enough to power you up to ~40mph and tackle hills and still maintain ~20mph because of the bike gears.

I modify a Skyhawk 4G to a 10G long shaft of my design to drop the engine output over the pedal systems sprockets.




The main 100T belt pulley is a freewheel, which means you have virtually no drag from the engine part even with the engine off when you pedal.



In short gears rock ;}