1. Sitherus

    GT5 No torque Low Speed

    My engine is a GT5 Stinger with a Jakes head and a ported cylinder body. I'm running a yz700 exhaust and a boost bottle. I also have an rt carburetor and an SBP shift kit, with an HD freewheel. My Bike frame is a Felt Vintage Iron Bolt, with a sealed gas tank. Im using the recommended NGK spark...
  2. 4banger

    New Huasheng won't break 22mph, why?

    I'm having an issue with my huasheng 4stroke stock with 44t pinapple rear sprocket. Old one was great, hit about 28-35mph on the regular, slight knocking once in a while on inclines. New kit won't clear 22mph but runs smooth. Would like to hit 30 again though. First, everything ,bike and all kit...
  3. M

    How to know when broken in? Fuel ratios?

    I probably have about 30-40 miles on my bike so far, and have been using a 20:1 gas to oil fuel ratio with non-synthetic 2 stroke oil, I don't know if it is meant for air cooled engines or not but... don't know if that matters but I'm sure it helps. Anyways, I wanted to know how do I know if my...
  4. B

    Came a long way to get here

    Before my current bike I was experimenting with all sorts of unsafe shenanigans, I am in the process of tuning this bike to optimum comfort. She runs and runs well. Please enjoy and critique responsibly. My current project is turning a skateboard deck into a comfy "two cheek" seat. Also working...
  5. TheNecromancer13

    Top speed?

    I was just wondering, what's the average top speed of the 66cc engines without mods? I can just barely get to 40mph with mine if I pedal to help it accelerate, once it gets there, the motor will keep it at 40, I have a 36t rear sprocket. Is it normal to be getting 40 without any mods or did I...
  6. C

    need for speed

    i am using the sprocket that comes with the chinese 2 stroke. and i can only reach 32 mph in a straight road. i am going to also be carrying replacement parts, 1 gallon os gasoline, headlights breaklights turn signals rear view mirrors and a bike rack, and i want to make atleast 40. the best...
  7. K

    200cc Gear ratio speed

    i just made my home made motorized bicycle, it has predator 212 cc with governor. my clutch has 13 tooth input jack shaft 22 output jack shaft 10 sprocket 56 how do i calculate my max speed at 3600rpm? Thank YOu. cvlt1
  8. F

    Low end power mods!

    Hey guys, I've found a few threads mentioning low end power but most people seem to be after speed. I wanted to start a thread to see how many mods we can get in one place that are dedicated to adding low end torque to your bike. Personally, I'd be plenty happy if i could mod my bike so that...
  9. D

    29er dimondback mountainbike BUILD

    49.5cc suzuki motor just ordered sickbikepartskits was going to fabricate alot of stuff myself but this will allow me to finish project faster less heat from the little lady about time not being spent with her LOL. Also doing a mod on the motor to give it a hi and low gear. going to...
  10. G

    Sick Bike Parts-Jets and gaskets

    I just want to shout out again to sick bike parts.com. I have ordered all my jets and gaskets from them. They always arrive in very neat packaging that i can reuse to meticulously sort my ever expanding collection of parts and tools. And they always arrive quickly. Since jetting and air...
  11. R

    help with electric bike driven through 3-speed gear hub?

    i've been looking at these: http://www.monsterscooterparts.com/24-volt-450-watt-brushless-electric-motor-9-tooth-chain-sprocket.html http://www.monsterscooterparts.com/24-volt-250-watt-gear-reduction-moto-9-tooth-8mm-05t-chain-sprocket-1018.html I need a motor that can output to a bike...
  12. M

    motoriozed bicycle upgrades

    I am new to motorized biking, What are the best ways to increase my speed i have a grubee skyhawk gt5 with a cns carburator? I also have a boost kit (not installed yet) but i did install a 36 tooth sproket. usflgusflg.xx. Tank you so much, any response is apreciated.
  13. D

    Qmatic & HS Top Speed?

    I'm looking into purchasing the Qmatic and am wondering what kind of setup will give me the highest top speed. My stock HS will get me up around 32-33 with a little shove to get going. Not great bottom end but I never have to peddle. I'm basically looking for the same thing from the Qmatic. A...
  14. N

    sprockets and speeds?

    What would be faster in over all speed, not acceleration, a smaller sprocket? or a bigger sprocket? im looking for a little more speed, right now im at the 44T sprocket that came with my engine xct2
  15. N

    bike is way slow, any ideas?

    ok, so, i have built my second engine on a bike, the first one was with a friend on his bike, everything went fine except the carborator filter kept falling off. i built my bike on my own with a little hole drilling help from my girls dad. And my bike is solid no problems at all, everything is...
  16. T-lo

    How Fast are You going? - I wana know

    Gps says i'm doing 26.4 mph at tops. I think i'm tuned up pretty well with no mods on a mountian bike with 44 tooth sprocket. this is with my 66/80cc (or whatever) skyhawk gt5 and the new pain in the ass cns carb. So, how fast are you going? please tell me your engine, Mph, sprocket...
  17. FPSaustralia

    How to make ur 66cc engine get more taque or acceleration =)

    .wee. Hey all i Have been experementing on how to modd you 66cc engine and icame across something on accedent .. i was Riding along one day and my -( idle tuning screw) - fell out .. my bike immidetly had much more power .. the reason being is it lets more air into the Engine and that...
  18. FPSaustralia

    NOS!! is it good for the 66cc engine ?

    cvlt1 hey i was thinking of getting a nos kit .. For my Bike ... And do they work very well .. THnks ... this is some on the kits .. http://www.kingsmotorbikes.com/nitrous-kit.htm thnks Please Reply :) .xx.
  19. FPSaustralia

    is tha 70cc stage 2 engine woth tha money

    Is the 70cc stage 2 engine worth the money Hey i was looking at tha 70cc stage 2 enigne ... any thay worth all $475 auz dolla ... do they put out more power than normal engine and yea .. dnut
  20. T

    Ignition Breakthrough/secret of the white wire

    okay, so a month ago I bought a puch cdi high rpm box off treatland, to rebuild my aging Star Fire. Just today I had a revelation on how to get it to work, and in retrospect, it's bloody simple and I shoulda realized it sooner. The wires coming off that box are Black: Kill, Black/white...