Need More Power

[johnm14]

I just recently installed my Happy Time 80 on a mountain bike. It runs pretty good, but I was hoping it had more speed and power. It only goes around 20 MPH and will barely pull a medium hill.

Any suggestions on how I can get more power?

Thanks

 

[JemmaUK]

Wait for it to run in and dont rag the guts out of it would be a start...

The chengines need to be run in sympathetically - or they wont perform very well in later life as it were. You can, when you have run the bike in (not before) fit up a suitable tuned pipe and also change the sproket for a faster one although you will loose hill-climbing ability (should be more than made up for by the pipe)

Ride an MB sympathically and it will be a good reliable machine - overtax it or treat it badly and dont look after it - It wont look after you... first law of mechanical respect that (as my grandfather used to say)

Jemma xx

 

[fastboy9]

Hi John, just try searching Horse power mods, and look in the Wild In the Streets section. What part of the world you from? Any pics of your bike?

Fastboy

 

[Esteban]

Installing it & running at high speeds, immediately,, will cost you another engine. BREAK-IT-IN !

 

[Skyliner70cc]

Exactly, running it hard and at high speeds while varying engine load and engine rpms is a great means to break it in. Give it time, it will work and come up on power.

 

[johnm14]

You are exactly right. It now has about twice the power it had when I first cranked it up. It's actually pretty powerful for its size.

 

[Skyliner70cc]

Switch to 32:1 and you'll see even more power if you are running 16:1 oil.

 

[fastboy9]

Switch to 32:1 and you'll see even more power if you are running 16:1 oil.

If you are going to do this then make sure you use very good quality oil!