98bansheeMAN98 Posted March 29, 2011 Report Share Posted March 29, 2011 hi. i have a 1998 yamaha banshee. the mods are holeshot xct 22x11x10 rear tires, bored .020 over, wiseco lite pistons, trinity stage VII cool head, 20cc domes, 28mm carbs, modified air box, anti vibration steering stem, +3 swingarm, v force reeds, adjustable timing plate 6+, and i am running stock gearing. i ride on trails and do some little dirt drags. i wanna be able to do atleast 110mph. i know ill lose power but i have plenty to spare and the motor is being ported and polished as i speek. this machine is my baby and i hate loosing to anyone. please help with what sprockets ill need to do that? Quote Link to comment Share on other sites More sharing options...
tedd1 Posted March 29, 2011 Report Share Posted March 29, 2011 Gearing Calculator You can try but I don't think you will be able to pull that kind of gear. Quote Link to comment Share on other sites More sharing options...
part-time Posted March 29, 2011 Report Share Posted March 29, 2011 I think you would need a lot more mods and power to get to those kind of speeds..Look at the mods in my sig, I dont even run 110mph...For me its not how fast you can go,its how fast you get there!!!! my .02 Quote Link to comment Share on other sites More sharing options...
98bansheeMAN98 Posted March 29, 2011 Author Report Share Posted March 29, 2011 I think you would need a lot more mods and power to get to those kind of speeds..Look at the mods in my sig, I dont even run 110mph...For me its not how fast you can go,its how fast you get there!!!! my .02 what do you guys think i should do? i need atleast 100mph. give me some mods i havent named that could help me make the power to pull the gear. Quote Link to comment Share on other sites More sharing options...
tedd1 Posted March 29, 2011 Report Share Posted March 29, 2011 How far are you racing? Why do you need to do 100mph? Quote Link to comment Share on other sites More sharing options...
robert.b.west Posted March 29, 2011 Report Share Posted March 29, 2011 I don't think a stock bore stock stroke can do 110 with any gear ratio. If you ignore the power required with the highest off the shelf sprockets 15/38 and with 22 inch tires and engine rpm at 10000 you are only looking at 103. Why do you want 110? Quote Link to comment Share on other sites More sharing options...
BUILDER Posted March 29, 2011 Report Share Posted March 29, 2011 I dont think you realize how long of a drag race you would need to have to get up to that kind of speed. If you are doing a 2 mile drag race then maybe you need that kind of speed but guys that are doing drag races on asphalt every weekend are not even going that fast. Also what are you racing that is going that fast? Quote Link to comment Share on other sites More sharing options...
robert.b.west Posted March 29, 2011 Report Share Posted March 29, 2011 I did 89 mph on my ported stock bore and stroke on an asphalt road. Stock gearing and 22 inch tires. If I changed my gearing I don't think I could have gone much faster bc there was just not enough motor there. Quote Link to comment Share on other sites More sharing options...
part-time Posted March 29, 2011 Report Share Posted March 29, 2011 Yeh!!! what are you racing to have to go that fast..75mph on a quad feels like 100 mph ...so how would you know that you are even going 110.... Quote Link to comment Share on other sites More sharing options...
Phelps Posted March 29, 2011 Report Share Posted March 29, 2011 I don't think a stock bore stock stroke can do 110 with any gear ratio. If you ignore the power required with the highest off the shelf sprockets 15/38 and with 22 inch tires and engine rpm at 10000 you are only looking at 103. Why do you want 110? you can't get a 38 on a 6 bolt hub and there are bigger sprockets for the front "off the shelf" than a 15 i ran 17/39 20" tire and went 107mph but the calculator said it should have been more for my rpm's. regardless you're going to need 80+hp and a 17/38 sprocket setup, at least a 10,000 rpm motor. that is if you wanna reach 110 in, or under the 1/4 mile mark. Quote Link to comment Share on other sites More sharing options...
robert.b.west Posted March 29, 2011 Report Share Posted March 29, 2011 you can't get a 38 on a 6 bolt hub and there are bigger sprockets for the front "off the shelf" than a 15 i ran 17/39 20" tire and went 107mph but the calculator said it should have been more for my rpm's. regardless you're going to need 80+hp and a 17/38 sprocket setup, at least a 10,000 rpm motor. that is if you wanna reach 110 in, or under the 1/4 mile mark. Is a 39 the lowest you can go? Sorry thought it was a 38. Yes there are bigger fronts but they don't fit without modification of some sort. I dont remember what is in the way. I thought 15 was the biggest you can just put on and have work. I guess I did not mean off the shelf. Quote Link to comment Share on other sites More sharing options...
Phelps Posted March 29, 2011 Report Share Posted March 29, 2011 if you run a stock plastic stator cover you will have to cut the plastic case saver out. no biggie. however i wouldn't suggest running that big of a drive gear without a bearing support. did it for a little while, but decided safe is better than sorry. Quote Link to comment Share on other sites More sharing options...
98bansheeMAN98 Posted March 29, 2011 Author Report Share Posted March 29, 2011 well im on dirt and where im at theres a dirt strip bout 1 or 2 miles where we dirt drag, im always up against 450 dirt bikes. thats who i need to beat. its too quick on trails for the people who i ride with, but it just dont have the top end to out run a 450 bike. thats what i need help doing. Quote Link to comment Share on other sites More sharing options...
98bansheeMAN98 Posted March 29, 2011 Author Report Share Posted March 29, 2011 i just bought a cheetah cub kit from trinity. i had one on my other banshee when i bought it from a guy in ohio. it ran great but it blew up and i ended up selling it for a few hundred bucks cuz of the condition of the frame and motor. i think it should give me enough power for 16t front and 39 rear. i have it all apart anyway because i put all new gears, seals and bearings in it and powdercoated the frame. but thanks for the help kinda. haha i got more questions than answers really. but what can i expect? i asked a crazy question for a small motor Quote Link to comment Share on other sites More sharing options...
98bansheeMAN98 Posted March 29, 2011 Author Report Share Posted March 29, 2011 100 shot of nitrous. Let that motor sing. NOOOSSSSSSSSSSSSSSSSSSSSSSSS i didnt know i could get nos for it? but i dont need nos for what im doin. Quote Link to comment Share on other sites More sharing options...
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