TGB 303R or R5?

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TGB 303R or R5?

Postby dave43 » Sun Apr 05, 2009 8:17 pm

I just bought a TGB 50cc scooter. The guy said it was a 2004 R5 but it is my understanding they didn't make R5's back then. He said it was originally a blue and yellow color repainted black. Can anyone tell me if it really is a 303R and let me know anything about this model. He also put in a 70cc kit and a new exhaust pipe. The exhaust pipe ends with two mufflers with big R's on them. Any ideas how fast this should go? Keep in mind I weigh 245 pounds. Thanks.
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re: TGB 303R or R5?

Postby mountainmoped » Sun Apr 05, 2009 10:12 pm

The TGB 303 is the Laser which is available in 49.9cc and 151cc. The 101S is the smaller frame 49.9cc Key West. They are now labeled Peirspeed rather than TGB, but the registration plate states they are manufactured by TGB.

I have been selling TGB scooters for 3 years and have found them to be extremely reliable and Cobra Powersports is great with both tech support and spare parts support.

A stock 49cc Laser with the restrictor ring removed from the variator should do 40 mph on level ground and maintain 20+ mph up steep hills.
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re: TGB 303R or R5?

Postby dave43 » Mon Apr 06, 2009 8:55 am

So the 303 is the same thing as a Laser R5? Remember it is a 2004 model. Thanks.
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re: TGB 303R or R5?

Postby mountainmoped » Mon Apr 06, 2009 10:44 am

The later ones have a different intake manifold and larger oil passages to the crankshaft bearings.
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re: TGB 303R or R5?

Postby dave43 » Mon Apr 06, 2009 10:48 am

Thanks Mountain, How does a 2004 model compare to the newer ones? Only having this a couple of days I've noticed when i give it throttle there is a delay to start moving. is this normal? Also It kills on idle untill it warms up after running for awhile.
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Re: re: TGB 303R or R5?

Postby JD » Mon Apr 06, 2009 5:33 pm

mountainmoped wrote:A stock 49cc Laser with the restrictor ring removed from the variator should do 40 mph on level ground and maintain 20+ mph up steep hills.


Our two Laser R5 bikes are stock except for the removal of the restrictor rings. They will hold 38 MPH (actual) on level ground, versus indicated speed of 45 MPH. The speedos are 15% optimistic.

Hill speed is inversely proportional to pitch, of course, but we have yet to meet a hill that brought the bikes to a complete stop.

I'm curious to see what difference the 70cc kit and performance exhaust make on the 303.

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re: TGB 303R or R5?

Postby mountainmoped » Mon Apr 06, 2009 5:49 pm

JD,

You can pick up 3 to 5 mph by removing the restrictors in the air intake hose and rejetting the carb. I have the MRP performance kits for 49cc TGBs in stock but have not installed one yet. I have installed the cylinder kits on several 151cc TGBs. There was a great increase in low end and mid-range but not much gain in top speed. I have the ignition systems for the 151cc that don't have the rev limiter but have not installed one of these either.
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re: TGB 303R or R5?

Postby dave43 » Mon Apr 06, 2009 8:42 pm

There are two mufflers coming off the exhaust pipe on mine. There is a Big R on it. Any idea what kind of pipe it is? I haven't ridden any other scooters to compare it to but it seems really quick from 15 mph to 35 mph then slows considerably above that
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re: TGB 303R or R5?

Postby pehuskey » Tue Apr 07, 2009 7:42 am

I've seen those pipes in the MRP catalog. I'm not sure what benefit you get from the split pipe.

You may want to experiment with a different pipe. It sounds like it may not be the best fit for your build. You may also want to change to rollers. It can help you push the performance around the powerband
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