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Post by geh3333 on Oct 24, 2014 22:04:22 GMT -6
Funny thing is most of us have hunched over to get more speed , remember I posted that . Yes I have to hunch over to hit 67 mph I've alway said that " I don't have a windshield " I like to test the limits of my engine . We all upgrade these scoots for better performance that's the point .And as for my 1000 ft above sea level , my scoot topped out at 55 stock just like many others , some good cvt work got me to 60 and the top end rebuild with the exhaust and carb put me at 67 . I never claimed anything that wasn't GPS varified . Obviously u can't put it to rest either can you . An as for our buddy his problem is the scrappy engine , it's the second one " same exact engine that will not take even a 30mm carb " with a bigger bbk then mine . More than likely poor quality head work . And it's not at all messed up . He had purchased a 30 mm carb on his own and had never tried it . I encouraged him to give it a shot and the 171cc scrappy engine couldn't take it . All he has to do is go back to the stock carb no harm done . I also built him an intake at no charge and gave him a 122 main jet . So these scrappy 171cc engines wouldn't take a 30mm carb with even a 115 main , but my 157cc eats a 32mm with a 125 main and runs just slightly rich ? Plus there are others using a 30mm carb and a 122 main with a 171cc engine with no problems " non scrappy " i know I'd get his running if I were able to do some work on it . Remember everyone, if you can put more air and fuel through your engine without runnin to rich you will have better results . Also remember cc's are one thing and horse power another , that's why running more air and fuel will give you better performance , horse power is the key . And alley many won't listen to you because you were ignorant to them . And since your so concerned with thinking others are lying remember we've caught you lying before . I only tell the truth wether I or others like it . I ate my words in the post about the straight run being downhill I was wrong and had no prob admitting it . Like I said post the thread . I know just as much and obviously more about these engines since I can " in your thoughts " do the impossible .
And jr we here in pa also get 95 + 80% humidity days . What does that mean ? So my scoot may lose 3 mph on a very hot day like that , SO WHAT! Lol all that means is that all scoots lose a little depending on the weather . But I'll take 67 in 80 -85 degree weather any day .
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Post by geh3333 on Oct 24, 2014 19:42:02 GMT -6
The problem with your theory jr is that you have never measured the amount of air and fuel that any 150 scoot" stock or with mods" can pull through the head " wether it's a stock head or an ncy racing head with bigger intake and exhaust ports" so you can't say what carb is to big or not . You have to go out and prove it like I did. After my variator issue was fixed my scoot just about pulls the front wheel up at takeoff " just like with my old Koso on there" my 24 mm carb wouldnt even take a122 main because it was too restrictive " not pulling enough air" but he 32mm took a125 and runs like no other with a58.5 bbk . . You don't see many running at 67mph although I have seen some with a 32mm efi with a 58.5 bbk run over 70mph . And this is all on straight runs . Yes I did see your straight run:
Watched it 3 times to make sure I was seeing it right, ya kind of have to pay closer attention at my age. :-/This was indeed a nice downhill run George and at almost 1000ft above sea level in Masontown and the temps down on that cloudy day you could for sure get a good run.
You know I live in the hills (Ozarks) and I can even get my old stock Bali to haul butt down Petit Jean Mt. which is in my front yard.  Air was good that day and it helped your scooter some. But bring it out here on a good old hot 95F with 80+ humidity day here in Arkieland and get on it and give it a go, I'll even find you a "perfectly" flat spot to give it a run and then you can for yourself see how other conditions effect a engine, hell at 95F plus with that kind of humidity it'll even effect you. 
JR
so now it's where I live that's the issue , lol , post the whole thread . I had members send me messages about how alleys claims where way off they just didn't want to get on alleys bad side because they see what happens . Come on a trip I guarentee I'll make you eat your words . |
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Post by geh3333 on Oct 24, 2014 19:30:56 GMT -6
Oh yeah , my scoot tops out around 7500 to 7600rpms on a straight run , on the 73 mph run it topped out at 8000rpms . The 68 mph run I had heavier weights in that's why it only hit 68 . I had to adjust to the new Koso variator I installed . A few have had issues with the Koso and had problems with the belt starting to high in the variator and also having to go down to 8 or 9 gram rollers to be able to run near 7500 rpms on a straight run .
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Post by geh3333 on Oct 24, 2014 19:23:36 GMT -6
I must have missed the whole flat road thing,,,, geez even a scooter with a blownup mill will do 175-200 mph if you push it out of an airplane at 10,000 ft jr dosent want you to read the actual thread , alleys claims where completely insane and laughable. |
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Post by geh3333 on Oct 24, 2014 19:19:44 GMT -6
The problem with your theory jr is that you have never measured the amount of air and fuel that any 150 scoot" stock or with mods" can pull through the head " That was my point , he has never done it ! , neither have I . But I can hit 67 on a straight run . He won't post the entire thread where I hit 73 on that run ! Yes it was a small decline but in person it looks nowhere near what it does on video . But he will not show the whole thread . My point was I'm running a 32mm pumper carb on a 58.5 bbk plus other upgrades and I've even showed picks of my plug . I have it tuned perfect and yes it screams for a small bbk . I've actually tried and succeeded with a big carb and have great results . That was my point , they won't even try they just say it's not gonna work , I guess I just got lucky , right jr and alley . If you read the post about the 73 mph run alley makes the excuse that " well it was nght hat dosent count " lol . He also thinks I picked up 13mph from that small decline ! . I agree I picked up 6mph from the angle and length of decline . I also admit after running that road It def is a decline but if you read the whole thread you can see I didn't mean to deceive anyone . |
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Post by geh3333 on Sept 14, 2014 16:30:21 GMT -6
The problem with your theory jr is that you have never measured the amount of air and fuel that any 150 scoot" stock or with mods" can pull through the head " wether it's a stock head or an ncy racing head with bigger intake and exhaust ports" so you can't say what carb is to big or not . You have to go out and prove it like I did. After my variator issue was fixed my scoot just about pulls the front wheel up at takeoff " just like with my old Koso on there" my 24 mm carb wouldnt even take a122 main because it was too restrictive " not pulling enough air" but he 32mm took a125 and runs like no other with a58.5 bbk . . You don't see many running at 67mph although I have seen some with a 32mm efi with a 58.5 bbk run over 70mph . And this is all on straight runs .
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Post by geh3333 on Sept 14, 2014 16:15:03 GMT -6
You have to first have experience when fitting a bigger carb to understand it's possibilities , these scoots have way more potential then you two think . This is the first time I've seen others have problems with a 115 being to rich with that type of setup . A 120 -122 main jet should be no problem on their setup . Pulling more fuel and air through a head is one way to up horsepower " this is common sense for any mechanic" . It's been proven that even a 32mm carb can be used with great success on a 150cc based scoot . " been done more than once" many have also used the 30mm with great success " and that's with main jets bigger then 115. If it's not a carb problem then it is more then likely a head problem . 2 of the recent engines came from scrappy with the gy6200 head , and bothe have had problems with running too rich on either a 115 or a112. Whoever is doing the work on these heads are probably not doing a good job . And then our buddy here with a big valve head " which I'm guessing might be the cheap one off of eBay who many have said was not worth buying" and it's only taking a 115 with a 30 mm carb ? It's obviously a problem other then " over carb" . Then again if it comes down to the heads not being able to handle the bigger carb then it is an over carb problem , but that's due to bad quality head work.
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Post by geh3333 on Sept 13, 2014 3:16:06 GMT -6
Here in many US states " including pa" it also reaches 90+ degrees so that desent explain the reason the carb is running better with a 115 . This is happening to other members in other states then Arizona . Something is going on with these carbs . I've always said that a bigger carb will pull more fuel and air , but it only pulls more air at top end " closer to wot" If you have a 24mm with a 115 main and a 30 mm with a 115 main , many think the 24 mm will pull less fuel at bottom end but that's not true . The 24 mm will pull about the same as the 30mm at bottom end " this is with the correct pilot in both "38-39 for a 30mm and a 35 for a 24mm" now as the carbs reach mid throttle the 24 mm will still tend to pull the same amount of full then the 30 mm , it's not until you reach near wot that the bigger carb begins to pull more fuel through the main 115 then what a 24mm carb will . This has to do with the amount of suction that each carb pulls at bottom end and top end . The 24mm has more suction power at bottom end then the 30mm but as you reach top end the 30mm makes surpasses the 24mm suction buy bein able to pull more air at and fuel at a higher rate then the 24mm . My 32mm " even in over 100 degree weather still run very good " . There is something going on with some of these 30mm carbs or it could be that my exhaust is more " free flow " then most . There can also be a problem with some of the heads not being ported as good as my ncy racing head . There can be many reasons why it's not taking a bigger jet , even to much oil on a uni can cause this problem . A 115 being to rich on a 30mm carb " like the one it mentioned in my last post " is def not right and he is in cooler weather then Arizona . Also many of the bigger carbs have the accel pump at takeoff that helps the bigger carb near bottom end . So his carb is running right with the extra fuel at takeoff but at half throttle it Boggs ? " atleast I'm assuming it's was running ok at takeoff since he didn't mention it "
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Post by geh3333 on Sept 12, 2014 20:34:19 GMT -6
Ok my gy6 150, I did aBBK 170cc, 30mm carb with 125 main jet and uni filter. big valve head, I had a 4mm stroker crank installed but have gone back to the stock crank. (Didn't like the vibration). I have an A9 cam. and a high flow exhaust. It excellerates great to 1/2 throttle, then falls on its face, till I back off, I can get to full throttle but real slowly, a little at a time. So am I needing more jet? less jet? what type exhaust is on your scoot ? And how r u oiling the uni ? A 115 is light for your setup . Also what type of 30mm carb do you have . I been working with another with a 170cc setup with a 30mm carb and he is also having a problem running rich , but his is bogging with a 115 . I'm starting to thing some of these 30mm carbs are not a true 30mm cast . For example I have a 32 mm carb on my 58.5 setup and I'm running a 125 main and it's running perfect , just slightly rich . I'd like to take a look at these 30mm carbs that r being sold . Also 115 mains are used a lot on setups without a bbk or a bigger head . They are often used when upgrading to a uni and a high flow exhaust . I wouldn't be concerned however with a bigger carb and your setup you should be able to pull more air and fuel " that would give u an increase in horse power" |
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front brakes
by: geh3333 - Sept 12, 2014 20:18:02 GMT -6
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Post by geh3333 on Sept 12, 2014 20:18:02 GMT -6
Good job , air tends to stick up in the top of the line and reservoir . When I first changed the brake fluid in my front brakes i drained the old fluid and pulled the new fluid down thru the line using a home made pump attached to the cylinder nipple .I left the reservoir open and pumped any remaining air out that way .
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Post by geh3333 on Sept 12, 2014 20:01:48 GMT -6
The displacement on the 150cc scoots sold in china are the exact same as the ones sold here in the U.S . We have the emissions crap here atleast on some . My 2006 had no emissions . Mine did an easy 55 mph on a straight run stock , and I was lucky to have an accurate speedo . A few quick mods like a Koso variator , longer belt , lighter weights got me up to 60 mph .
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Post by geh3333 on Sept 12, 2014 18:49:50 GMT -6
A stock 50cc scoot is usually lucky to hit 40 " though some do " . A stock 150cc will do 55mph if tuned correctly. The problem is that many of these scoots have inaccurate speedometers that read much faster then actual speed . 43.5 mph is not impossible but I would check your speed with gps to varify that .
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Post by geh3333 on Sept 12, 2014 18:41:20 GMT -6
Most 150cc scoots should be able to do 55mph if tuned correctly , that is the carb plus the cvt .
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Post by geh3333 on Sept 12, 2014 18:35:28 GMT -6
I had problems with the Koso sliders I bought . I used them in my Koso variator and one of the sliders kept turning out of place causing the variator to not close fully on decel . I never had the problem with dr pulley sliders.
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