My uncle has a 2000 Banshee with a pipe and a K&N power kit. ( I think ) I know nothing about the banshee, but he said it will go like 130 mph. I called HORSE $hit! How fast would this go? I was thinking it would go like 80mph. Just how fast would this go? I know nothing about banshees, but this seemed rediculous to me. Thanks

Mike

 

I love going down to the local wheeler shops and those guys saying " oh yeah man, right out of the box, banshee hits 110". You'll be lucky to see 75 all stock. Its fast enough, period. Without a doubt.

 

I am sure his banshee could go 130.. But that would have to be going down a 45deg. angle road with a backwind of 150mph. But with the right gearing and ALOT of mod's, Im sure his banshee will hit 130. I know my shee with what it has (and stock gearing) goes over 80, but thats nothing special.

 

Just ask him how he knows it will do 130. Unless he has a speedo or something what makes him think he can do 130 on his shee. Definatley not w/ the minimum mods he has. It prolly does feel like 130 at wot. But like 87 said no way.He is probably just pulling your leg like most uncles do. [img]i/expressions/face-icon-small-happy.gif[/img] Blaze

 

Stock expect to see low to mid 70's and with a pipe expect to see low to mid 80's. Anything you add after that will not really give big HP gains until you get into porting, big-bore etc... To get to even 100 MPH will take a lot of power.

People tend to have a tendancy to "guestimate" the speeds of their quads on the high side but 130 MPH is a bit much.

 

I had heard Yamaha says 74mph stock. My playbike is non-ported with Pro-circuit pipes. I have removed the airbox lid and it is jetted perfectly. The gearing is stock with 20 inch rear tires. I was interested in how fast it would run, so I had a friend follow me in his 2001 Ranger for approx 2 miles on the highway. I was at half throttle (though the engine was almost wrapped out which I think shows it wasn't a lack of power since the engine was able to rev) for the entire distance. He said his speedo sit at a constant 88 mph. I figure a 5% difference for tire wear, speedo correction, the fact that we weren't EXACTLY the same speed. This will give a 4.4 mph difference. I figure 83 mph (88-5%) is a pretty good estimate of its topend. Even if I add the 5% (showing his speedometer was slow) the new number is 93 mph. This is still far from 130.

I'll try to give the mathmatical impossiblity of this. I might make a mistake, but here goes:
Using 20" tires that have a circuference (distance around outside) of 62.8" the rear axle turns 1008.92 times each mile. 41 tooth is stock for 89-up and 40 is the smallest you can go, 42 is stock for 87-88 and the hub will accept as small as a 38. Front stock is 14 on 89-up and 13 on 87-88, both will accept as high as 17.
Remember RPM X #teeth=RPM X #teeth. So if the axle turns 1008.92 times each mile, and there are 41 teeth on the rear sprocket 14 on the front, the countershaft is turning 2954.69 times each mile. If you figure 17/41 gearing at 2954.69 turns on the front sprocket, the rear axle will turn 1225.11 times. This is a difference of +121%. So if the bike will do 85 mph with stock gearing, the 17/41 will bring it to 103 mph.
If he has a older banshee that will accept a 38 tooth sprocket, or a special hub that uses 38 tooth 250r sprockets, and a 17 tooth front, the rear axle will turn 1321.84 times each mile. A difference of +131% over stock. This brings the topend to 111 mph.
Since his bike is just piped, I doubt it will even try to pull the 17/38 combo. As Wyo said, it takes a lot of power to go above 100 mph.

Sorry if my long explaination confused anyone. Also, I kept getting interupted and have been working on writing this for about 4 hours, so if someone posted before I was finished, I appologize if I repeated it.

 

Okay...This is what you do:

Ask him if he thinks your truck will do over 130mph. I'm sure he will say no, so then you say that you want to bet him that it will.

Tell him that if he loses the bet you get his Banshee. After he agrees say "Hey, I have an idea. My speedometer doesn't read to 130 so we can use your Banshee to see.".

Then line em up and go down the road 1/4-1/2 mile. He may jump ya off the line, but he won't be in front for very long.

Enjoy your new quad. ;-)

-Josh

 

AlkyburninX, Thats pretty impressive. WOW!!![img]i/expressions/face-icon-small-shocked.gif[/img]

 

My dodge only goes up to 120 mph (the speedo) I dont think it could get much over 100 mph. That was a very impressive math equation though, you should write a computer program to do that!

Mike

 

<< My dodge only goes up to 120 mph (the speedo) I dont think it could get much over 100 mph. >>



That's the point. His quad will not do over 80mph so you'll smoke him. Then he'll be telling the whole town that your Ram will do 150mph.

-Josh