bignasty1 Posted November 10, 2003 Report Posted November 10, 2003 okay well my friend is telling me with 22 inch tires a 16,40 gearing on concrete at a slight down hill angle i could hit 100 mph. i dont think i could but i might be wrong. but we are gonna test here in a day or 2 when i have a chance its stupid but what are ur thoughts i say no he's says it may be possible. i just think he's a dumb ass. ohh and that gearing is being pulled by my mods below. Quote
TheNewGuy Posted November 10, 2003 Report Posted November 10, 2003 how are ya'll gonna check the speed? that's really my only concern, i dunno if that can do 100 but maybe... peace Mike Quote
TheNewGuy Posted November 10, 2003 Report Posted November 10, 2003 i think it did a double post, if so..sorry Quote
Blue Duece Posted November 10, 2003 Report Posted November 10, 2003 is it a 40? or a stock 41? i know with a 17/41 and a fuckin sail, down hill, stock shee, wound to the hilt, would hit right around a 103.6mph give or take the 3.6.......run your 20's it wont matter Quote
erbilabuc Posted November 10, 2003 Report Posted November 10, 2003 I think it will, the only thing stopping any engine from putting a certain amount of mph is power. The way it was taught to me is that the more power an engine has the higher and faster it spins. Higher revolutions equal more top speed. So my guess is that the only thing restricting the 100mph thing is actually the pipes! I mean look at it this way, spin your arm as fast as you can. Do you think thats the fastest your arm can spin? Of course not, if you were stronger you could spin your arm much faster. My jet engines teacher gave me that example. peace in the middle east Quote
bashee crazy kidd Posted November 10, 2003 Report Posted November 10, 2003 alot of sites have this calculater thing were u put in your stuff and it tells you how fast you will go(for atv's look it up) i dont memba were i got it from Quote
fixitrod Posted November 10, 2003 Report Posted November 10, 2003 http://www.dfn.com/benkaren/speed.xls That's a spreadsheet that benbb made. It's calculator that will tell you speeds at different gears, sprocket changes and tire changes. You'll need microsoft excel. Quote
bignasty1 Posted November 10, 2003 Author Report Posted November 10, 2003 not really the most accurate way but he's gonna follow me in his mustang. but we'll see. Quote
tats4life Posted November 10, 2003 Report Posted November 10, 2003 got any friends with a handheld gps, that's the most accurate. Just go from point a to b, and the gps tells ya how fast you were going. Quote
bignasty1 Posted November 10, 2003 Author Report Posted November 10, 2003 didnt even think about that. i have one. Quote
boonman Posted November 10, 2003 Report Posted November 10, 2003 The way it was taught to me is that the more power an engine has the higher and faster it spins. This is VERY untrue. It can be the case, but it is not a direct relationship. The more "power" and engine has, the better ability it posseses to move a given load. This is the important part where you are concerned. If you build your engine, you will be able to "pull" taller gearing better, and there fore give you more top end. Here's how: Say your engine can now pull a 14/41 gearing really clean. You jump to a 15, and it is doggy off the line, but it can pull up top a little longer, annd gain you some top end speed. However, you are unhappy with the off the line performance. So, what do you do? you build the motor, you pipe it, and let's say you get it ported. Now, you may be able to pull a 16/41 gearing clean off the bottom, and be really sweet on top, but you however aren't turning all that many more revs. Maybe 1,000 RPM's at the most on top. While this will equal some extra top speed, it won't be alot. It also depends how long you're gonna hold it WOT for... Quote
bignasty1 Posted November 10, 2003 Author Report Posted November 10, 2003 well i got plenty of space we got a back road thats a slight down hill and strait as an arrow for approximately(sp) 5.4 miles so space isnt a problem. but i dont plan on holding it open for miles at a time just till the speed quits climbin and starts to peak. i took off work today so i'll tell ya in a few hours. Quote
speedster07 Posted November 10, 2003 Report Posted November 10, 2003 Goto this website and type the weight of your atv and its horsepower and this calc will tell your trap speeds of 1/4 mile Quote
speedster07 Posted November 10, 2003 Report Posted November 10, 2003 Goto this website and type the weight of your atv and its horsepower and this calc will tell your trap speeds of 1/4 mile http://www.torinocobra.com/horsepower.htm Quote
kenr74 Posted November 10, 2003 Report Posted November 10, 2003 Just going on gearing alone your bike would hit 100 mph around 9500 rpm in sixth gear. That assumes that your bike can pull it though. I think you would have to have some serious motor work or a good down hill run to make it. Quote
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