<![CDATA[Motorized Bicycle Engine Kit Forum - 2 Stroke Bicycle Engines & Kits]]> http://motorbicycling.com 2 stroke motorized bicycle engine kits need careful installation and setup, find out how from our professionals here! en Sat, 21 Nov 2009 00:27:04 GMT vBulletin 60 http://motorbicycling.com/images/styles/silverblue/misc/rss.jpg <![CDATA[Motorized Bicycle Engine Kit Forum - 2 Stroke Bicycle Engines & Kits]]> http://motorbicycling.com Pk80-j Limited Edition Slant Head Teardown And Review http://motorbicycling.com/f4/pk80-j-limited-edition-slant-head-13117.html Fri, 20 Nov 2009 19:01:40 GMT Ever wonder whats inside a PK. I did and bought one to find out. Got it from Pirate Cycles on tuesday. Check it out and add your opinoins please. dnut Ever wonder whats inside a PK.
I did and bought one to find out.

Got it from Pirate Cycles on tuesday.

Check it out and add your opinoins please.
dnut
Attached Thumbnails
Click image for larger version Name: NICE MOTOR.JPG Views: N/A Size: 271.4 KB ID: 16256  Click image for larger version Name: MOTOR COMPONENTS.JPG Views: N/A Size: 273.9 KB ID: 16257  Click image for larger version Name: E-MISSION-STICK.JPG Views: N/A Size: 275.0 KB ID: 16258  
]]> 210061741 http://motorbicycling.com/f4/pk80-j-limited-edition-slant-head-13117.html Seized Drive Sprocket http://motorbicycling.com/f4/seized-drive-sprocket-13032.html Tue, 17 Nov 2009 07:24:00 GMT I could already feel the wind in my hair when...
Well, the chain jumped from the sprocket and got caught in the spokes.
I exclaimed things, fixed that problem (as far as I can tell) and was gifted with another.

It seems as though the drive sprocket is seized.
I could roll the bike (both with clutch in and clutch out) before my mishap.
Now the back tire's locked, regardless of clutch position.
I checked the clutch and everything looks okay.

I attempted to uncover the drive sprocket, but it seems some superhuman chinaman attached the thing, and I stripped the screw. (“—Also, Dude, ‘Chinaman’ is not the preferred nomenclature. Asian American, please.”)

So, maybe the question's a bit premature (as I can't get into where the sprocket is—yet), but I'm wondering if anyone has had the same problem or has any insight.

The weird thing, to me, is that it worked before the accident but now it doesn't.
And I'm not sure it's related to the chain jumping (but maybe when it seized the chain jumped? that doesn't make much sense to me)

Any help would be appreciated.

I've got a Dax F80.
It went together pretty smoothly for my first build...
But I think I'm going to replace all the butter-consistency bolts ]]> kahnowerh http://motorbicycling.com/f4/seized-drive-sprocket-13032.html How Cold? http://motorbicycling.com/f4/how-cold-12991.html Mon, 16 Nov 2009 00:44:31 GMT Hello all! I'm new to all this. I just installed my first kit last week. I was just wondering how cold i can ride my MB before I cause any problems with the engine? ]]> nethax http://motorbicycling.com/f4/how-cold-12991.html Re-routing exhaust. Brainstorming. http://motorbicycling.com/f4/re-routing-exhaust-brainstorming-12954.html Sat, 14 Nov 2009 14:58:27 GMT Hi all. I am working out the best method to re-rout my exhuast to the rear right of the bike. Has anyone found a compatable size of flexable apliance style gas line that would fit over the kit exhaust and muffler pipe diameter? I have posted a pic here of where using some thing like that would save me lots of head aches and take stress off the exhaust manifold studs. Calling all brain stormers. Hi all. I am working out the best method to re-rout my exhuast to the rear right of the bike. Has anyone found a compatable size of flexable apliance style gas line that would fit over the kit exhaust and muffler pipe diameter? I have posted a pic here of where using some thing like that would save me lots of head aches and take stress off the exhaust manifold studs. Calling all brain stormers.
Attached Thumbnails
Click image for larger version Name: bike_11_13_09_exhaust.jpg Views: N/A Size: 58.5 KB ID: 15851  
]]> K.i.p http://motorbicycling.com/f4/re-routing-exhaust-brainstorming-12954.html <![CDATA[I'm Stuck! I dont know how to finish my project.]]> http://motorbicycling.com/f4/im-stuck-i-dont-know-how-12898.html Thu, 12 Nov 2009 00:00:45 GMT So I'm pretty new to this whole scene. I dont have much of a mechanical background and I got my kit yesterday from Dax. The kit didnt come with an instruction manual so I used the installation guide at thatsdax.com.

I was able to:
1. Do the wheel thing
2. mount the engine
3. put the sparkplug in the engine
4. connect the black tube to the spark plug and mount the little box thing
5. connect the blue to blue and black to black

I was unable to do:
Alot. Expecially the clutch lever stuff.

Please look at the photos below and tell me what to do next! I am utterly lost.

The first link is what I have so far
The second link are the parts with which I have no idea what to do with

Links:
http://i8.photobucket.com/albums/a11...1091547-00.jpg
http://i8.photobucket.com/albums/a11...1091549-00.jpg ]]> Rachtak http://motorbicycling.com/f4/im-stuck-i-dont-know-how-12898.html expansion chamber and break in http://motorbicycling.com/f4/expansion-chamber-break-12880.html Wed, 11 Nov 2009 02:01:36 GMT I'm not planing on doing it but I was wondering if it is acceptable to break in an engine with an expansion chamber? ]]> MaxPower http://motorbicycling.com/f4/expansion-chamber-break-12880.html fuel injected italian 2 stroke? http://motorbicycling.com/f4/fuel-injected-italian-2-stroke-12830.html Mon, 09 Nov 2009 03:54:43 GMT anyone know where i can get my hands on this? im buying my engine kit tomorrow. so if i cant find this, im gonna go with a 5.8 morini for 490 dollars. anyone know where i can get my hands on this? im buying my engine kit tomorrow. so if i cant find this, im gonna go with a 5.8 morini for 490 dollars. ]]> davilajoel http://motorbicycling.com/f4/fuel-injected-italian-2-stroke-12830.html need help here no spark http://motorbicycling.com/f4/need-help-here-no-spark-12829.html Mon, 09 Nov 2009 03:35:33 GMT i really dont know whats wrong w/ my engine, i'd replace the magneto, cdi, sparkplug,. but it doesnt help. still no spark coming out, i check the magneto using multitester and found out that magneto is good, the only problem is the cdi i really dont know how to check it .I'd remove the sparkplug and i plug it to the high tension wire from cdi to see if theres a spark bridging but i cant see, my gap is .030
the air and fuel mixture is good , is there any electrical related that i need to check aside from magneto, cdi, sparkplug, by the way i also check the killswitch its good ]]> gian http://motorbicycling.com/f4/need-help-here-no-spark-12829.html spark plug gap http://motorbicycling.com/f4/spark-plug-gap-12766.html Fri, 06 Nov 2009 18:07:41 GMT is there anyone who could help me to find the correct spark plug gap, i dont have tools for measuring the gap ,maybe i could use any cards but i dont know what are their thickness is there anyone who could help me to find the correct spark plug gap, i dont have tools for measuring the gap ,maybe i could use any cards but i dont know what are their thickness ]]> gian http://motorbicycling.com/f4/spark-plug-gap-12766.html buying another engine kit this saturday, http://motorbicycling.com/f4/buying-another-engine-kit-saturday-12749.html Fri, 06 Nov 2009 01:37:46 GMT im getting another engine kit this saturday, im just not sure what to get, i had a zoombicycle 80cc and it lasted aloooong time, i found a vendor in my area and i can get engines from him easily, he offers a few kits, this is his web site Motor Boys (http://www.80ccmotorboys.com/kits-and-parts.php) i really want to get that 4 stroke but i have been hearing the gearbox is junk, so should i just get another 2 stroke? for the extra money id like to get that 4 stroke, wouldnt a 49cc 4 stroke be alot less powerfull than a 66cc 2 stroke though? im getting another engine kit this saturday, im just not sure what to get, i had a zoombicycle 80cc and it lasted aloooong time, i found a vendor in my area and i can get engines from him easily, he offers a few kits, this is his web site
Motor Boys

i really want to get that 4 stroke but i have been hearing the gearbox is junk, so should i just get another 2 stroke? for the extra money id like to get that 4 stroke, wouldnt a 49cc 4 stroke be alot less powerfull than a 66cc 2 stroke though? ]]> linnix13 http://motorbicycling.com/f4/buying-another-engine-kit-saturday-12749.html Spooky expansion http://motorbicycling.com/f4/spooky-expansion-12731.html Thu, 05 Nov 2009 17:58:54 GMT Just wondering if anyone has tried the expansion chamber from Spooky tooth?.wee. Just wondering if anyone has tried the expansion chamber from
Spooky tooth?.wee. ]]> aero07 http://motorbicycling.com/f4/spooky-expansion-12731.html pullstart advisable during winter http://motorbicycling.com/f4/pullstart-advisable-during-winter-12676.html Tue, 03 Nov 2009 16:34:18 GMT i've been using my pullstart a couple of months ago. It was a piece of crap i pulls about 300x before it gaves up. but it was a big help for me it keeps you out from skidding of rear wheel, specialy winter is coming i dont know how many skidding gonna happens you gonna wear out your rear wheels easily before the engine starts. well it also depends on your weight coz i weigh only 120lbs thats why its really hard for me need to put your weights at the back. i paid $20 for it and it still covers by the warranty.
just be carefull of using pullstart if you pull it dont release it dont let it go you need to guide it safely back to its case otherwise you gonna damage your pullstart coil easily. ]]> gian http://motorbicycling.com/f4/pullstart-advisable-during-winter-12676.html Oily Spark plug http://motorbicycling.com/f4/oily-spark-plug-12668.html Tue, 03 Nov 2009 03:47:33 GMT I have a 2 stroke 49cc engine. I'm very new to this, and I didn't assemble mine but bought it second hand and am trying to learn from here.

The engine was very new when I bought it, maybe had run 1 gal. I ran it for about a week (another gal.) on the recommended 25:1 oil to gas mix, then it started to sputter and die. The spark plug was super oily and gross and oil was dripping from the exhaust. Also, there was some oil on the air filter. I cleaned the plug and cut it back to 40:1. It ran fine.
A week later it started to jerk and died again. The plug was very oily again, but no drippage from the exhaust, so I think it was a little better. I cut it back to 50:1 and put in a brand new plug (NGK B7Hs) gapped at .025. I changed the air filter. I used super unleaded gas and Motul 800 2T synthetic oil and ran it for another week and the plug is still looking really oily. I cleaned it and it has been running fine. It hasn't died yet, but it seemed to be getting a little jerky again today though.
I have no idea how to adjust the e clip in the carb, which I've heard other people talking about, if that would make a difference. I don't know if that is simple to do, or if that would be a possible fix. Other than that I have no idea how to keep the plug from getting oily. I would greatly appreciate any help that can be offered. ]]> captaingeech http://motorbicycling.com/f4/oily-spark-plug-12668.html 2 stroke vs 4 stroke http://motorbicycling.com/f4/2-stroke-vs-4-stroke-12651.html Mon, 02 Nov 2009 16:03:03 GMT which do you think is better and why. which do you think is better and why. ]]> robert1992 http://motorbicycling.com/f4/2-stroke-vs-4-stroke-12651.html anyone know where to get a pull starter? http://motorbicycling.com/f4/anyone-know-where-get-pull-starter-12648.html Mon, 02 Nov 2009 14:10:16 GMT I've got my 80cc/66cc kit installed and I am ordering a SBP jackshaft kit and don't really look forward to pedal starting my bike, so does anyone know a site where I could get a pull start addon?(other then ebay, I already know I can get them there) ]]> john_the_great http://motorbicycling.com/f4/anyone-know-where-get-pull-starter-12648.html