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Search took 0.01 seconds. Search: Posts Made By: Lefty
Forum: 125cc - 249cc 11-20-2013, 12:38 AM
Replies: 4
Views: 14,576
Posted By Lefty
Your A8 and A9 cams are for your high rpms and...

Your A8 and A9 cams are for your high rpms and top end, as you go with a bigger number A10, A12 etc, those are for more LOW END torque and you loose rpms.
Lefty
Forum: 125cc - 249cc 11-19-2013, 10:29 PM
Replies: 6
Views: 6,025
Posted By Lefty
Yes, not good running without an exhaust, your...

Yes, not good running without an exhaust, your lucky so far that you have not burned the exhaust valve as well as not completely seized the motor.
Lefty
Forum: 125cc - 249cc 11-19-2013, 08:59 PM
Replies: 10
Views: 5,720
Posted By Lefty
Are you sure its a SLIDER type Carb they come...

Are you sure its a SLIDER type Carb they come with a PD24mm CVK carbs?

Well it is time to put it on the center stand take the CVT cover off and crank it up and VIDEO the CVT how it is operating...
Forum: 50cc - 124cc 11-19-2013, 05:27 PM
Replies: 2
Views: 4,006
Posted By Lefty
Check for bad connections would be the first that...

Check for bad connections would be the first that comes to mind. Loose boot cap on the coil wire loose connections on the coil itself, bad or loose ground wire from motor to frame etc.. Also CDI may...
Forum: 125cc - 249cc 11-19-2013, 05:05 PM
Replies: 10
Views: 5,720
Posted By Lefty
Did you check the Diaphgram or is this a SLIDER...

Did you check the Diaphgram or is this a SLIDER type carb? Also check if the Muffler is clogged with grass or something depending on how it went down and slid on the grass. It is not internal if it...
Forum: 125cc - 249cc 11-19-2013, 03:13 PM
Replies: 10
Views: 5,720
Posted By Lefty
Check the carbs throttle cable at the carb and...

Check the carbs throttle cable at the carb and make sure when you twist it wide open it is opening all the way. Also if the carb is a CV type carb take the top off and check the Rubber diaphgram for...
Forum: 50cc - 124cc 11-18-2013, 08:49 PM
Replies: 1
Views: 4,185
Posted By Lefty
Unless you are a welder or have a friend that is...

Unless you are a welder or have a friend that is a welder not an easy swap. But if you have deep pockets they already make a 150 swap motor mount.
Lefty
Forum: 125cc - 249cc 11-18-2013, 03:44 PM
Replies: 10
Views: 5,720
Posted By Lefty
Glad to hear your alright, the first thing I...

Glad to hear your alright, the first thing I would check are the Weights, with the sudden going down and motor stopping the weights may have gotten out of position.
Also check if any hoses came...
Forum: 50cc - 124cc 11-17-2013, 10:06 PM
Replies: 9
Views: 9,934
Posted By Lefty
A 50cc 139QMB 4 stroke motor doing 50mph and...

A 50cc 139QMB 4 stroke motor doing 50mph and STOCK to boot WOW!! keeping up with the 150cc's scooters I see.
Lefty
Forum: 50cc - 124cc 11-15-2013, 02:41 PM
Replies: 5
Views: 5,119
Posted By Lefty
You have to check if the rim is out of whack or...

You have to check if the rim is out of whack or the tire is out of whack.
So line up a piece of anything a stick works and hold it along side the bottom and mark where the edge of the rim is and...
Forum: 50cc - 124cc 11-14-2013, 04:26 PM
Replies: 12
Views: 26,884
Posted By Lefty
That is what I expected it is running really rich...

That is what I expected it is running really rich with the #90 jet. If the scoot sped up when you backed off it would mean it is LEAN.
So put in a smaller Main jet.
Lefty
Forum: 50cc - 124cc 11-14-2013, 12:21 AM
Replies: 3
Views: 11,245
Posted By Lefty
If that is the only mod on the scoot that #90 is...

If that is the only mod on the scoot that #90 is to big. If the cone filter is the only mod a #80 or even smaller main jet. I assume it is the stock carb an 18mm and they come with very small main...
Forum: 50cc - 124cc 11-13-2013, 06:55 PM
Replies: 12
Views: 26,884
Posted By Lefty
It sounds good, as for the valves sure you can...

It sounds good, as for the valves sure you can try .002 on the Intake and .005 on the exhaust. Some folks set the exhaust to .005 so that it lasts a little longer before the next valve adjustment is...
Forum: 125cc - 249cc 11-13-2013, 03:33 PM
Replies: 5
Views: 6,607
Posted By Lefty
The 157QMJ is very common motor and there are...

The 157QMJ is very common motor and there are parts galore for it. That is the motor I have on my HotRod Trike. Great little motor and you can mod the heck out of it.
Lefty
Forum: 50cc - 124cc 11-13-2013, 04:22 AM
Replies: 12
Views: 26,884
Posted By Lefty
Take the CVT cover off and put it on the stand...

Take the CVT cover off and put it on the stand and start it up and see rev it up and watch the belt on the Variator. See if it climbs to near the edge of the Variator.

If you hear a BOGGGGGGG...
Forum: 50cc - 124cc 11-13-2013, 12:59 AM
Replies: 12
Views: 26,884
Posted By Lefty
Well that is good that you adjusted the valves...

Well that is good that you adjusted the valves but if it is still not getting over 4K only a few things will cause that.
1. Low Compression
2. Something wrong with the Variator
3. Bad CDI

And...
Forum: 50cc - 124cc 11-12-2013, 08:57 PM
Replies: 12
Views: 26,884
Posted By Lefty
First thing since it is used test the compression...

First thing since it is used test the compression on the motor. If the compression is low it will loose a lot of power especially with a load on it. Then you can check the Valves adjust them BOTH to...
Forum: 50cc - 124cc 11-12-2013, 03:54 PM
Replies: 9
Views: 9,934
Posted By Lefty
Good and smart decision, sell your 50 and get...

Good and smart
decision, sell your 50 and get a 150cc so you can keep up with traffic. Even if you get the 50 go into the 40s it will be always running at Wide Open Throttle and with very high RPMS...
Forum: 125cc - 249cc 11-12-2013, 03:48 PM
Replies: 5
Views: 6,607
Posted By Lefty
Look on the case right under the CVT the motor...

Look on the case right under the CVT the motor type will be scribed on the case like this:
Lefty
http://www2.picturepush.com/photo/a/13850995/640/13850995.jpg...
Forum: 50cc - 124cc 11-12-2013, 02:02 AM
Replies: 9
Views: 9,934
Posted By Lefty
I have heard all those and many more but I am not...

I have heard all those and many more but I am not here to argue just stating facts. I know these things like the back of my hand but whatever. If you want more top end speed you have a couple of...
Forum: 50cc - 124cc 11-12-2013, 01:42 AM
Replies: 9
Views: 9,934
Posted By Lefty
Well hate to be the bearer of bad news but a...

Well hate to be the bearer of bad news but a Peace Sport 50cc is only capable of 30-33 mph. So wanting to reach 50mph you are better off getting a 150cc which out of the crate will do 50mph. For your...
Forum: 50cc - 124cc 11-11-2013, 11:36 PM
Replies: 3
Views: 6,118
Posted By Lefty
Make sure the KILLSWITCH is on the run position....

Make sure the KILLSWITCH is on the run position. Also check for spark on the frame.
If it Sparks on the Frame but not the motor then your ground from the frame to the motor is bad.
If it doesn't...
Forum: 250cc + 11-11-2013, 12:29 AM
Replies: 7
Views: 5,545
Posted By Lefty
The linhai motor has a valve cover on the top for...

The linhai motor has a valve cover on the top for the intake valve and one on the bottom for the exhaust.
Here is how to get to them and how to adjust them: Set the Top Intake to .004 inchs and the...
Forum: 50cc - 124cc 11-10-2013, 09:52 PM
Replies: 9
Views: 6,027
Posted By Lefty
The First number is the diameter part of the...

The First number is the diameter part of the roller the 13 is the width. So the 16x 13 are the wrong size. 16 is smaller diameter 17 and the 13 is wider probably to wide to fit in the ramp slot. You...
Forum: 50cc - 124cc 11-10-2013, 09:40 PM
Replies: 5
Views: 7,998
Posted By Lefty
Put a Volt meter on the battery and start it up...

Put a Volt meter on the battery and start it up and rev it up to around 3-4 and see if it is overcharging. If it is it WILL blow out the bulbs.
Lefty
Showing results 1 to 25 of 93
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