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Search took 0.01 seconds. Search: Posts Made By: qwertydude
Forum: 50cc - 124cc 04-12-2014, 09:51 AM
Replies: 3
Views: 4,508
Posted By qwertydude
A couple things to do that are free. Or very low...

A couple things to do that are free. Or very low cost.

Adjust the valves. Remove the smog junk. Spend a little money on a name brand spark plug. Get a gates or bando CVT belt.

These things may...
Forum: 125cc - 249cc 04-12-2014, 09:44 AM
Replies: 6
Views: 4,243
Posted By qwertydude
The best carburetor means nothing unless you know...

The best carburetor means nothing unless you know how to tune them to make your engine work at its best.
Forum: General Scooter Discussion 03-25-2014, 11:52 PM
Replies: 4
Views: 3,939
Posted By qwertydude
Most likely still has a KPH speedometer in which...

Most likely still has a KPH speedometer in which case it will most definitely hit 100. 100 kph + the standard 20% optimism equals about 50 mph in real life.
Forum: General Scooter Discussion 03-15-2014, 12:36 AM
Replies: 8
Views: 6,078
Posted By qwertydude
Unfortunately Aprilia is already a low volume...

Unfortunately Aprilia is already a low volume dealer in the US so it's just that much harder for them to compete. Especially with the flood of cheap Chinese scooters depressing scooter prices and...
Forum: 50cc - 124cc 03-15-2014, 12:27 AM
Replies: 9
Views: 22,272
Posted By qwertydude
Probably just the wind. Did you try going in...

Probably just the wind. Did you try going in opposite directions and seeing if you get the speed back the other way?

Also is this a 2t or 4t bike? If it's a 4t it could definitely be time to...
Forum: 50cc - 124cc 03-10-2014, 08:46 PM
Replies: 11
Views: 11,911
Posted By qwertydude
.012 mm is way too small. I'm pretty sure you...

.012 mm is way too small. I'm pretty sure you mean .12 mm as that's pretty normal (equal to .0047 inches) for the exhaust valve as it heats up and expands more. Intake valve I'd keep tighter around...
Forum: 125cc - 249cc 03-10-2014, 01:37 AM
Replies: 14
Views: 5,940
Posted By qwertydude
You know what's funny it may seem silly but even...

You know what's funny it may seem silly but even BMW has a design like it. I could imagine how practical it is. Bad weather and rain and you still want or have to ride? No problem.
...
Forum: General Scooter Discussion 03-10-2014, 01:09 AM
Replies: 46
Views: 86,601
Posted By qwertydude
Yes except I'm also one in real life. This is why...

Yes except I'm also one in real life. This is why us engineers hold such disdain for designers. You make assumptions, don't care about science, and don't believe facts when presented clear as day in...
Forum: General Scooter Discussion 03-09-2014, 11:53 PM
Replies: 46
Views: 86,601
Posted By qwertydude
You're a design major. Take it from an aerospace...

You're a design major. Take it from an aerospace engineer. A 150cc GY6 simply will not make 12-14 hp. My Sym Wolf is 150cc and has 14.69 hp and redlines at 9500 rpm. In order to make the GY6 150cc to...
Forum: 125cc - 249cc 03-06-2014, 12:45 AM
Replies: 9
Views: 6,808
Posted By qwertydude
http://en.wikipedia.org/wiki/Ignition_timing

http://en.wikipedia.org/wiki/Ignition_timing
Forum: 125cc - 249cc 03-05-2014, 11:26 PM
Replies: 9
Views: 6,808
Posted By qwertydude
That's good if you plug in a CDI and get a higher...

That's good if you plug in a CDI and get a higher idle it usually means the original CDI was overly retarded. I know on my scooters that I've owned when I've plugged in "performance" CDI's the idle...
Forum: 125cc - 249cc 03-05-2014, 11:24 PM
Replies: 5
Views: 3,863
Posted By qwertydude
I would get a new carb just as insurance. It's...

I would get a new carb just as insurance. It's good to have a spare carb especially if you fix one that did give you problems. Nothing worse than not only being stranded but then having to wait for...
Forum: 50cc - 124cc 03-02-2014, 04:05 PM
Replies: 14
Views: 10,010
Posted By qwertydude
When was the last time a valve adjustment was...

When was the last time a valve adjustment was done?

It's entirely possible you have low compression too. Combine this with worn CVT components and you could easily get lowered top speed.

At 10k...
Forum: General Scooter Discussion 02-14-2014, 08:04 AM
Replies: 23
Views: 14,495
Posted By qwertydude
I would change the gear oil right away. The...

I would change the gear oil right away. The Chinese shipping oil they put in is just that. Good for shipping and that's about it. I change the gear oil first thing with synthetic and after 1000 miles...
Forum: 125cc - 249cc 01-29-2014, 09:40 PM
Replies: 8
Views: 4,912
Posted By qwertydude
It can be all over the place but usually 10%...

It can be all over the place but usually 10% optimistic is common for the 150cc and smaller scooters. Definitely check yours against a GPS, you might be a little disappointed.
Forum: 50cc - 124cc 01-20-2014, 03:11 AM
Replies: 9
Views: 5,230
Posted By qwertydude
Taller gearing makes no sense on the stock motor....

Taller gearing makes no sense on the stock motor. You'll actually more than likely lose top speed as it may take your engine out of its power range or reduces your acceleration because the initial...
Forum: 50cc - 124cc 01-20-2014, 03:09 AM
Replies: 3
Views: 4,498
Posted By qwertydude
Don't guess on weights. Buy a cheap digital...

Don't guess on weights. Buy a cheap digital tach-hour meter. They're only about $25 on ebay. This will tell you exactly what your engine is doing and how you'll need to change the weights. Generally...
Forum: 50cc - 124cc 01-18-2014, 02:00 AM
Replies: 3
Views: 4,498
Posted By qwertydude
That's the problem with just randomly sticking...

That's the problem with just randomly sticking parts in and hoping for the best. When performance tuning it's important to change only one thing at a time because you don't know how they'll all...
Forum: 50cc - 124cc 01-18-2014, 01:55 AM
Replies: 9
Views: 5,230
Posted By qwertydude
Generally when you enlarge one gear you have to...

Generally when you enlarge one gear you have to shrink the other one. I think you may have your gear combinations wrong.

So it might be 18/42 and 16/46. The 18/42 will give you higher gearing...
Forum: 50cc - 124cc 12-28-2013, 12:51 AM
Replies: 2
Views: 3,786
Posted By qwertydude
It is also possible that the wires or a connector...

It is also possible that the wires or a connector broke also try installing a new fuse. It's not unheard of that a fuse may look good but in reality is still open, especially with cheapy Chinese OEM...
Forum: General Scooter Discussion 12-28-2013, 12:47 AM
Replies: 6
Views: 4,574
Posted By qwertydude
Also you should add drain the carb bowl. And...

Also you should add drain the carb bowl.

And as far as protecting the piston and cylinder it's also a good idea to spray WD-40 down the spark plug hole and kick the engine over a few times or let...
Forum: General Scooter Discussion 12-21-2013, 07:23 PM
Replies: 15
Views: 20,903
Posted By qwertydude
You've just experienced what I've known. When...

You've just experienced what I've known. When buying a Chinese scooter it's actually somewhat beneficial to buy a used one with a few thousand miles on it.

The reason being is that Chinese...
Forum: 50cc - 124cc 12-17-2013, 01:20 AM
Replies: 2
Views: 3,961
Posted By qwertydude
The quietest scooters I've ridden are the Vespas...

The quietest scooters I've ridden are the Vespas and Piaggio's followed by Hondas.

If you're looking for Chinese scooter then they're all about the same except for the Buddy's. Buddy's intake...
Forum: 250cc + 12-07-2013, 01:37 AM
Replies: 4
Views: 6,234
Posted By qwertydude
Usually that's a symptom of too much gear oil....

Usually that's a symptom of too much gear oil. Generally you keep the bike vertical and put just enough oil to leak out of the fill hole and let all the excess drip out of the fill hole and that's...
Forum: 125cc - 249cc 11-19-2013, 11:05 PM
Replies: 4
Views: 14,339
Posted By qwertydude
There are several different manufacturer and...

There are several different manufacturer and there's no set standard for what they mean. Some speculate that it means the amount of lift you get but also some have said it can vary too because some...
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