|
|
Post by carasdad on May 7, 2013 22:09:01 GMT -5
Ya gotta love Math Geeks... Just out of curiosity I ask my bud with his ink pen filled pocket protector if a stock 50 could go 60mph even under ideal conditions with no wind. He is also a good Scoot mechanic and can do THE fastest BBK install I've ever seen. Just over an hour..  He has a Sunny and his wife has an ATM-50. He said both have the same gearing...CVT and rear pulley size as well as tire circumference with the 3.50-10 tires. A longggggg.....conversation ensues over the phone as he measures CVT and rear pulley max travel...gear ratio....tire circumference...belt width and more...as I nearly fell asleep...lmao. Finally he said..."It will take right at 10,800 rpm for them to hit 60mph even down hill with no wind, so good luck trying, it's your engine not mine. You could gear up 26% but would have no take off and only hit that speed on a long steep down grade" I told him it was not for me..it was that many times folks ask in different forums if they can get theirs to go that fast with just a BBK. In which he explained..what I already knew..that a BBK will add a tad more speed...but not 60 mph worth. So any body that is willing to run 10,800 rpm..you could possibly do it...just make sure you have an extra engine at home... ;D He said his best estimate is it would take a 52mm BBK as you would need the torque for a 25% or better gearing upgrade....oversize variator with good quality sliders..not the generic green cheapies on Ebay and a stroker cranksahft...but even then you are pushing the envelope. I know Larry from the old scootdawg built one...and I think millsc is right on the heals of that elusive 60mph some folks seek. So millsc is the go to man if that is what ya seek. Because while you are running stock or close to it...60 is outta the question unless you can wind up to 10,800 rpm...and I don't even run my 2T that high..although I have read articles where racers can hit 14,000 rpm on a 2T...but they are sponsored and get a free new engine every race. Hey any of you Vendors out there wanna be my sponsor??... ;D....  |
|
|
|
Post by scootnwinn on May 7, 2013 22:15:03 GMT -5
Wait we have people on here who do 60 on a ATM 50 like daily. Will it go that fast if you increase the tire pressure to 40psi, I think that may be the secret...
|
|
|
|
Post by urbanmadness on May 7, 2013 22:27:24 GMT -5
Wait we have people on here who do 60 on a ATM 50 like daily. Will it go that fast if you increase the tire pressure to 40psi, I think that may be the secret... I think the secret is the incredibly accurate speedometers these scooters come with... LOL |
|
|
|
Post by carasdad on May 7, 2013 22:29:50 GMT -5
Wait we have people on here who do 60 on a ATM 50 like daily. Will it go that fast if you increase the tire pressure to 40psi, I think that may be the secret... Oh crap...Gary left out tire pressure!!! That does now that you mention it..make certain stock scoots hit 60 mph on a daily basis..know what?..forget 40 psi..tomorrow I am pumping mine up to 80 psi to get twice the speed...120mph..although my tires are rated at 90mph..  But he did suggest Nitrogen..what it does in cars...scoots and motorcycles I have no clue. But we did use it in aircraft tires in the military due to altitude and atmospheric conditions. I never can get my scoot airborne..so maybe I don't need it?.. On a serious note...why Nitrogen in land based vehicle tires? What does it do that air can't do?  |
|
|
|
Post by urbanmadness on May 7, 2013 22:35:16 GMT -5
Wait we have people on here who do 60 on a ATM 50 like daily. Will it go that fast if you increase the tire pressure to 40psi, I think that may be the secret... Oh crap...Gary left out tire pressure!!! That does now that you mention it..make certain stock scoots hit 60 mph on a daily basis..know what?..forget 40 psi..tomorrow I am pumping mine up to 80 psi to get twice the speed...120mph..although my tires are rated at 90mph.. But he did suggest Nitrogen..what it does in cars...scoots and motorcycles I have no clue. But we did use it in aircraft tires in the military due to altitude and atmospheric conditions. I never can get my scoot airborne..so maybe I don't need it?.. On a serious note...why Nitrogen in land based vehicle tires? What does it do that air can't do? On land based vehicles, Nitrogen just costs more money then air. LOL It's suppose to be more temp stable, migrate less thru the rubber in the tire, and ensures you don't get moisture in the tire from the compressed air source. |
|
Sophomore Rider
Currently Offline
Posts: 201
Likes: 1
Joined: Feb 27, 2013 2:23:40 GMT -5
|
Post by CopperDeer on May 7, 2013 22:36:38 GMT -5
From what I understand Nitrogen filled tires provide more consistent inflation (less sensitive to changes in road surface and ambient temperature/pressure). IMO a properly filled and maintained tire with "regular" air does just as well in all but the most extreme conditions....
Anybody seriously tryina go 60 on a 50cc frame... jeez godspeed. I used to think it wasn't a big deal to push these scoots but I had some scary wobble at around 50 MPH a few weeks ago and will never again push it like that...
|
|
|
|
Post by scootnwinn on May 7, 2013 22:39:28 GMT -5
Nitrogen is already in the air what it does in pure form I have no earthly idea. Shoot why bother with 80 psi just go with solid rubber tires I'm sure it will not affect handling at all since at the speed you will hit you will likely only find yourself trying to figure out how to kiss your butt goodbye while cartwheeling through the air at 80 mph...
|
|
|
|
Post by urbanmadness on May 7, 2013 22:43:48 GMT -5
Anybody seriously tryina go 60 on a 50cc frame... jeez godspeed. I used to think it wasn't a big deal to push these scoots but I had some scary wobble at around 50 MPH a few weeks ago and will never again push it like that... My Verona 150, flat out will do 57 (gps) on a level road, and seems pretty stable even with it's 10" wheels. What I did notice is the brakes are not up to the task. The front on is OK, but the back one at that speed is pretty much worthless. When she was stock, she'd do 53 and the brakes felt fine... that extra 5mph makes a difference. I feel it's at its limit. So, if I want more out of it, it's gonna be time to sell it and get a helix. (or keep it and get a helix) Or time to really start modifying the touring 150. Gotta tell ya, I'm leaning more towards the Helix every day.... The look is even growing on me (and I hated it to start with) |
|
|
|
Post by skuttadawg on May 7, 2013 22:49:10 GMT -5
I love to bust liars who say their 50 can do 60 when they fizzle at 40 . My 2T with a BBK I can ride it on the interstate with no problems since it has 13s instead of 10s and as much more stable
|
|
|
|
Post by carasdad on May 7, 2013 22:51:02 GMT -5
Anybody seriously tryina go 60 on a 50cc frame... jeez godspeed. I used to think it wasn't a big deal to push these scoots but I had some scary wobble at around 50 MPH a few weeks ago and will never again push it like that... My Verona 150, flat out will do 57 (gps) on a level road, and seems pretty stable even with it's 10" wheels. What I did notice is the brakes are not up to the task. The front on is OK, but the back one at that speed is pretty much worthless. When she was stock, she'd do 53 and the brakes felt fine... that extra 5mph makes a difference. I feel it's at its limit. So, if I want more out of it, it's gonna be time to sell it and get a helix. (or keep it and get a helix) Or time to really start modifying the touring 150. Gotta tell ya, I'm leaning more towards the Helix every day.... The look is even growing on me (and I hated it to start with) 57mph is pretty good....but then you a 100cc's above a stock GY6 50 that does 60 mph. The Helix is not too bad looking of a scoot...but the ones that make me chuckle are the Honda Elite's...first time I saw one I thought it was an older snowmobile coming down the road....in mid summer..  man did that thing confuse me..a big ole box with 2 wheels under it.. |
|
|
|
Post by carasdad on May 7, 2013 22:56:54 GMT -5
I love to bust liars who say their 50 can do 60 when they fizzle at 40 . My 2T with a BBK I can ride it on the interstate with no problems since it has 13s instead of 10s and as much more stable So..what are you saying...that 10,800 rpm is too much for a stock 4T? It will get you to right near 60mph...the stock tach ends at 10,000...so just paint the extra 800 over on the ride side of it...simple. see... |
|
|
|
Post by urbanmadness on May 7, 2013 23:09:10 GMT -5
My Verona 150, flat out will do 57 (gps) on a level road, and seems pretty stable even with it's 10" wheels. What I did notice is the brakes are not up to the task. The front on is OK, but the back one at that speed is pretty much worthless. When she was stock, she'd do 53 and the brakes felt fine... that extra 5mph makes a difference. I feel it's at its limit. So, if I want more out of it, it's gonna be time to sell it and get a helix. (or keep it and get a helix) Or time to really start modifying the touring 150. Gotta tell ya, I'm leaning more towards the Helix every day.... The look is even growing on me (and I hated it to start with) 57mph is pretty good....but then you a 100cc's above a stock GY6 50 that does 60 mph. The Helix is not too bad looking of a scoot...but the ones that make me chuckle are the Honda Elite's...first time I saw one I thought it was an older snowmobile coming down the road....in mid summer.. man did that thing confuse me..a big ole box with 2 wheels under it.. I forgot to mention I'm 310lbs.... (yes big red neck on a little red scooter.... lol) 57mph is better the pretty good, I think, when you consider my weight. And she's pretty much stock other then a Hoca 115mm Varaitor with 12 gram rollers. I'm sure it would do better with a light weight rider altho I'd probably have to put heaver weights to keep it from over -reving with a lighter rider. I dunno, the Helix and the Elite look alot alike, especially the "snoopy" nose. What I'd really like to find, is a Honda Big Ruckus. Those things were beasts. Helix has alot more storage tho Of course, I've hijacked this thread. Sorry Mate.. |
|
|
|
Post by scootnwinn on May 7, 2013 23:11:17 GMT -5
This thread was ripe for highjacking. Couldn't have happened to a nicer thread... Can we carry on with the ridiculousness now I don't think anyone is watching...
|
|
|
|
Post by urbanmadness on May 7, 2013 23:16:17 GMT -5
I love to bust liars who say their 50 can do 60 when they fizzle at 40 . My 2T with a BBK I can ride it on the interstate with no problems since it has 13s instead of 10s and as much more stable So..what are you saying...that 10,800 rpm is too much for a stock 4T? It will get you to right near 60mph...the stock tach ends at 10,000...so just paint the extra 800 over on the ride side of it...simple. see... 10k is too much for a 4t gy6 without mods. I don't even know if you could get one to live for every long with mods at 10k. Is it even possible to get valve springs that would handle that? Do they make a cam that is tuned for that? And what about those quality valve seats? would the live at 10k? Just a few questions for the 4t tuners. 2t, I'm sure could be built to do it... I'm not as familair with the 2 strokers (altho I would love an old smoker to piss off the weed and seed eaters in my state) |
|
|
|
Post by carasdad on May 7, 2013 23:26:19 GMT -5
This thread was ripe for highjacking. Couldn't have happened to a nicer thread... Can we carry on with the ridiculousness now I don't think anyone is watching... Not watching because of the exhaustion..many folks experience 'Jet Lag' like symptoms at 60mph on 2 wheels. urbanmadness ...was a joke..and correct a gy6 50 cannot handle 10k+..we are talking..a literal grenade right under yer crotch. properly tuned 2T handle it well however. |
|
