2011 grubee 48cc

Greg58

Greg58

Well-Known Member
I built another bike last night using a 2011 48cc grubee. The first thing I noticed was the square cyld. head like the 66cc , longer clutch arm with a slight bend to tuck the arm in under the carb better. clutch cable boss is machined in the crankcase at a better angle. Also a redesigned exhaust port angle. I moved the e-clip on the needle to the bottom slot before installing the carb. It started right up! I noticed right off that this engine has much better mid range torque, also it seems that grubee has worked out the bugs in the cns carb because this one runs great! The only adjustment I made was lowering the idle. It sounds like someone is reading the complaints!
 

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Nice, I am going to get a new bike and engine soon. Would you recommend this engine? Why not get the 80cc or the 66cc? Your bike kicks ass.
 
The 80cc and 66cc are one in the same my friend. 80cc is used for marketing purposes only, the actual engine displacement is 66cc. I use the bigger 66cc Grubee Skyhawk angle-fire series. All kits are about the same, it's the modifications you do that will make a difference. Best of luck with your project, let us know if we can help.
 
The engine size for me was decided by the Ga. dmv. We have to stay under 50cc to avoid registration, since I built my bike we have built five of the 48cc grubee's. We get a-lot of thumbs up when we ride.
 
Hey Greg, what part of GA, I'm up in the northwest near Marietta/Cartersville. You're right I believe all we need is to have less than 50cc and a DOT helmet and a standard drivers license. I haven't ridden on the main roads much due to lack of visibility (mountains and corners) but have not had any issues with local police etc.. I actually have a 66cc kit but for all practical purposes it's externally the same as a 49cc so I have labeled it as a 49cc.
 
The best i can tell the model year change over was mid. october, the one I built was dated sept. 2010 the one I did this week was oct. 20 2010.
 
I heard that the only way for the cops to know weather you have a 49cc or 80cc is to take the engine apart. So they never know anyway if your engine is bigger. Any truth to that?
 
I have heard that you must have the epa rating decal on the engine that states the engine size, besides my 48cc will go faster than I want to ride a bike anyway. I am trying to obey the law.

Honesty is doing right when no one is looking!
 
OK, point well taken. I have also heard the 48cc is enough power as well. But not sure I can resist getting a bigger engine. I don't equate man made lawswith weather a person is honest or not. As I drive over the speed limit almost everywhere I drive my truck;)
 
Around here as I ride by seams everyone notices what I am riding, If regular people notice then I would think a officer would do the same. I don't want the heat thats all.
 
Yes I am very lucky it seems to live where the cops don't really have time to care. Thanks for the tips, I really like this site!
 
I had a cns carb and the biggest problem I had was the plastic on the inner clamp became to hot and melted . Have you or anyone else had this problem I have had two and the same problem the nt carb i did not have that problem cuz they had a medal clamp.
 
if the air to fuel ratio is lean the engine will run hoter, one problem we sometimes overlook is the ethnol in our fuel.
 
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