MeanSheeMachine Posted October 14, 2008 Report Posted October 14, 2008 (edited) Hey guys whats up I got a banshee that i built. this is the list of mods. 2005 motor. Fully ported by a reputable company in florida Bored 80 over Wiseco pistons Coolheads with 19cc domes Vforce3 reeds PJ 34mm carbs K&N filters on each carb 4 degree time advance CPI pipes Pinguel Dual petcock valve 16 Front sprocket 38 Rear sprocket Stock crank Stock flywheel Race plastics Holeshotz Front and rear tires. Im running half Av gas half 93 and yamalube 2r oil My problem. The bike is real slow. I mean a banshee with Cpi rejetted and Intake beats me. I have no low end power. I can redline the bike coming out of the hole and dump the clutch and the bike will die out then wake up and go forward. It will not burn the tires off the line like other banshees. When i am in 5th gear the bike takes for ever to hit the end of the gear and when i throw 6th it dies down and picks up little by little. I would probable need a mile to top the bike out. I dont know what the hell is wrong. I need you guys to help me out and see if you can see something i cant. Or any suggestions. Thanks Edited October 14, 2008 by MeanSheeMachine Quote
BellicoseBanshee Posted October 14, 2008 Report Posted October 14, 2008 What size tires are you running? I would look at changing the gearing. I am not a gearing expert and run my banshee in the sand with paddles most of the time, but 16/38 is very tall gearing... :ermm: Quote
MeanSheeMachine Posted October 14, 2008 Author Report Posted October 14, 2008 What size tires are you running? I would look at changing the gearing. I am not a gearing expert and run my banshee in the sand with paddles most of the time, but 16/38 is very tall gearing... :ermm: They are 22x11x9 Quote
sinisterboo Posted October 14, 2008 Report Posted October 14, 2008 Good god, you should be able to run about 135 mph on the dragstrip! I'd be for swapping that rear for a 40 or 41, and 14 or 15 in front. Personally I run a 41 and a 13, and I rip outta the hole, and dont run out for a ways......I run 21x12x8 8 paddle haulers... Quote
RollinRhino Posted October 14, 2008 Report Posted October 14, 2008 The gear ratio is too high. First take the gearing back to stock and work from their. 16 front is too much. If you leave the rear gear at 38 at least run a 13 front. Quote
MeanSheeMachine Posted October 14, 2008 Author Report Posted October 14, 2008 well I have a stock 14 front sprocket or a 40 rear sprocket and some rims with the stock dunlop 20x10x9 tires. What would be the best thing to do working with what i got? (remember right now i am running 22x11x9 tires.) Ohh by the way THANKS for the help guys. Quote
hercalmighty Posted October 14, 2008 Report Posted October 14, 2008 Try the sprockets and tires. Its easy enough to change. See what happens and adjust from there. Quote
MeanSheeMachine Posted October 14, 2008 Author Report Posted October 14, 2008 (edited) Try the sprockets and tires. Its easy enough to change. See what happens and adjust from there. but isnt a 14 a little small? what mph would a 14/40 with the dunlops do? Edited October 14, 2008 by MeanSheeMachine Quote
hercalmighty Posted October 14, 2008 Report Posted October 14, 2008 Do a search. There is a gearing calculator on here that someone posted. Like I said it will take you a coulple minutes to throw it on. If its too low jump up to a 15. If you try the 14 and you need more go back to the 22" tires and see what you think. Use what you have to see what you need. Here you go: http://home.earthlink.net/~gellett/banshee.htm Quote
DuneRookie Posted October 14, 2008 Report Posted October 14, 2008 Was it recently rebuilt because that sounds like top end going out to me. Quote
MeanSheeMachine Posted October 14, 2008 Author Report Posted October 14, 2008 (edited) Well guys i finally got a chance to work on the bike. I started off by double checking the sprockets. I do in fact have a 16 in the front but what looked to be a 38 in the back was actually a 39 but it was full of dirt and was not clearly legible. I have a 40 rear that i was going to swap out but i thought that i should change the tires first and test the bike out like that since it was only a tooth difference away from the new one i had. Let me tell you something what a difference the bike is totally different. It is full of torque and bottom end power. I would have never thought that dropping a couple of tire sizes would wake up the bike so much. Now im running the 20's instead of the 22's. Thanks to hercalmighty and that gearing calc i noticed that made a 10mph difference just by changing the tires. Thank You So Much, To All You Guys For The Help!!!!!!!!!!!!!!! Edited October 14, 2008 by MeanSheeMachine Quote
desertdeweller Posted October 14, 2008 Report Posted October 14, 2008 I would still experiment with the gearing you might find a combination that works really well for you. you already have the 14 it won`t cost you any thing to try it. if it seems to low throw the 22`s on there see how that works. if not switch it back it will give you an idea of what you and your bike likes. Quote
hercalmighty Posted October 14, 2008 Report Posted October 14, 2008 Like said try the 14 and the 22" see how that runs. Hey man thats what this sites for. And a little joking around here and there :thumbsup: Quote
Tapatalk Posted October 14, 2008 Report Posted October 14, 2008 i had the same problem, put the 14 on the front. I'm getting 22" tires soon and i'm told i'll likely need to go to a 13 front. So if your 14 dont cut it get a 13. your 39 in the rear should be fine. I'm at 14/40 right now, you can see how it runs on my youtube link if ya want. then again, every shee is different so ya know :shrug: Quote
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