80cc stalling out after 10 mins

[biknut]

I have a 36T on my bike, and it will do 35 mph, but it's running 7000 rpm to do it, which you could consider the red line.

If you cruise around at the red line all the time, your motor isn't going to last very long. Im comfortable cruising at 30 on it, but it likes 27 better. 24 is even better. There are times when I'm in traffic running 35 on it, but I try to limit that as much as possible.

Stuff likes to come loose at those speeds.

Bolts
Screws
Fillings
Mufflers

At 30 not so much
At 26 hardly at all.

 

[njkl44]

Go with the 41T for now then. 32T is way too tall for a stock motor.

With a 41T you'll be able to do about 31-32 mph.

This is how fast a 40T goes. A 41T will be about 1 mph slower.

26x2.125 tire 81.8" circumference

40T sprocket

RPM MPH

1000 4.7
1200 5.7
1400 6.6
1600 7.6
1800 8.5
2000 9.4
2200 10.4
2400 11.3
2600 12.3
2800 13.2
3000 14.2
3200 15.1
3400 16.1
3600 17.0
3800 17.9
4000 18.9
4200 19.8
4400 20.8
4600 21.7
4800 22.7
5000 23.6
5200 24.6
5400 25.5
5600 26.5
5800 27.4
6000 28.3
6200 29.3
6400 30.2
6600 31.2
6800 32.1
7000 33.1

Awesome! I'll put this on tomorrow. Not what should a 44 tooth top out at? around 28 or so? How do I know if im getting 7000 rpm? So i should see a difference with the better gas?

 

[biknut]

Awesome! I'll put this on tomorrow. Not what should a 44 tooth top out at? around 28 or so? How do I know if im getting 7000 rpm? So i should see a difference with the better gas?[/QUOTE]

With a 44T most people can do 28, but only after break in is complete.

My bikes don't get full power till after 350 miles, and I start running 40:1 or higher ratio.

 

[njkl44]

Awesome! I'll put this on tomorrow. Not what should a 44 tooth top out at? around 28 or so? How do I know if im getting 7000 rpm? So i should see a difference with the better gas?[/QUOTE]

With a 44T most people can do 28, but only after break in is complete.

My bikes don't get full power till after 350 miles, and I start running 40:1 or higher ratio.

Looks like I just need to ride it for while

 

[hondaracer420]

I just ordered a 80cc 2 stoke t80 kit an the seller isn't any help at all at what fuel ratio I should put in it an I need advice on how to make a off set carb cuz I'm puttin it on a next avalon an its very cramped

 

[crassius]

couple ways - saw intake in two pieces & join them with a short piece of rubber hose that will take fuel (use two hose clamps), put carb on and tie it to bike frame with a zip-tie to hold up its weight - or get an extended intake off the net that will bring the carb out the right side of the frame (usually about $8)

on the avalon, be careful in getting the front mount solid & you might want to disable the rear spring with a piece of pipe inside

 

[picklefish]

If I could chime in, I will be happy with 20 mph to be honest. How are you guys determining mph anyways? cycle computers, something analogue? what works?