Coupelx Posted August 15, 2007 Report Share Posted August 15, 2007 It may be easier now than a few years ago, but with all these new cylinder combinations that are readily available and most importantly reliable. Also easy to set-up and easy to tune and easy to get parts for. So basically I don't see the point when you can bolt on a cheetah (4 mill to an 18mil or larger) and get all the power you need in just a weekend of motor work. I also don't think you could use too much boost from a turbo causing to much crank case pressure, blowing seals etc..To me a turbo would be months of work and constant tuning. If turbo motors added something substantial over what the market has to offer then I would think the motor builders would be using them. I honestly think it's a benefit to disadvantage ratio most people probably look at. I do think it's pretty trick though and admire your dedication to tackle such a difficult project and hopefully you can make it work to your satisfaction. This is why people like you will always be followers and never leaders. I have owned and built a few turbo vehicles and sure its going to take some work but the potential payoff is huge. Quote Link to comment Share on other sites More sharing options...
RNBRAD Posted August 16, 2007 Report Share Posted August 16, 2007 This is why people like you will always be followers and never leaders. I have owned and built a few turbo vehicles and sure its going to take some work but the potential payoff is huge. This is not a leading and following issue. If you disagree with something I said in my post, then back up your argument instead of trying to attack me personally with no merrit. :thumbsup: Quote Link to comment Share on other sites More sharing options...
Coupelx Posted August 16, 2007 Report Share Posted August 16, 2007 (edited) This is not a leading and following issue. If you disagree with something I said in my post, then back up your argument instead of trying to attack me personally with no merrit. :thumbsup: I am not attacking you personally. This is the image that you project to me based on your posts. Yes there are easier ways to get power but why not try something different. You are attacking him and his ideas by telling him that its a waste of his time and that he should just follow what everyone else does based on the the problems a few other have had. He is trying a whole different approach, fuel injection. Its not about eazy, if i wanted that i would have bought a yfz450 and called it good. If i came off as attacking you, then my apologies. You mention a disadvantage to benefit ratio. yes i agree that for most people it does not look good but for those that are willing to go through the work the potential benefits are huge. Have you ever ridden in a turbocharged car? I have a turbocharged 2.3l mustang. It is finicky, take alot more than my 5.0 to keep running but the ease that it makes power is unreal. the principles for keeping a turbomotor alive are alot different from a NA engine. That and 22psi kicking you in the ass is just down right fucking addictive. I must also applaud this guy on using megasquirt MAF. theres a road thats not well known either! Edited August 16, 2007 by Coupelx Quote Link to comment Share on other sites More sharing options...
RNBRAD Posted August 17, 2007 Report Share Posted August 17, 2007 That's the whole point of this forum, is to inform others of what works and what doesn't. If a person wants to spend countless hours and dollars on a turbo project for a banshee, that is fine and totally applaud his efforts, but it also raises a question as to what a person is trying to achieve. Also does he know what he's stepping in to? I'm not condemning him nor did I attack him but rather informing him that if his goal is 160hp there is another path of less resistance. If his point is to do something totally different that no one else has achieved, then I can understand that. You never know what people are thinking or their mechanical experience and if they even know what others have been through trying to achieve the same thing. Quote Link to comment Share on other sites More sharing options...
jay shafer Posted August 18, 2007 Report Share Posted August 18, 2007 A guy ran 7.17, 6.86, and then a 6.66 in a 1/8th mile last sunday with a turbo banshee. The turbo is from a Mazda Miata. For some reason it won't build boost on the line until he let off the clutch and then right before 60ft then the boost hits and its on the wheelie bar. Quote Link to comment Share on other sites More sharing options...
TurboBanshee420 Posted August 21, 2007 Author Report Share Posted August 21, 2007 Thanx for the support guys! Every now and again someone comes along that takes one look at my project and actually realizes what kind of work went into it. It's not just a quick bolt on item with a banshee, but when somebody like me comes through and makes it work from start to finish. Then the path has already been plowed for some other people to do it and know what works and what doesn't. And that is where the pay off is! I'm just hoping to make it easy for some people who want to take on the challenge of doing the same thing to their bike. I'm tired of people just takin the easy way and dropping thousand on a cheetah. I say try something new. This was the basis for the whole project.... To blow the doors open on the "finiky turbo" and make people see that it will and does work. Carbs are just a thing of the past for people who want to push the limits. I'm happier having my banshee sitting in the garage with all its potential, then actually riding it the way it was. I gladly gave up the entire summer of banshee-ness for the future of the TurboBanshee. and I'd do it again too. Sometimes you just have to go for it regardless of what your giving up. Next year... I'll be the fastest guy around. maybe, just maybe I could be the fastest guy ever on a quad. :beer: But we'll just have to wait and see what this motor will take before I have to build it again...better BTW... I still haven't spent as much $$$ on this turbo project as it costs for a cheetah. :thumbsup: update... I have the mega back out of the bike and in the lab for some more config mods. I'm installing a filter circuit on the MAF jumper under the board. I've gone back through the harness and cut out the MAF wires to install some high quality shielded wires in their place. I've also clocked the MAF to be farther away from the spark plug wire. And finally I'm working out some EMI problems with my stator wiring. It seems the monster stator was cross-talking between legs and i wasn't getting but only a few amps up to the rect/reg. Which I have since replaced with a rect/reg from a brand new 600rr. (faster reacting diode trio) It seems that I should have twisted the wires 10-12 times per/ft instead of braiding them together. I'll be back on the saddle after vacation. More updates soon. Stay tuned Quote Link to comment Share on other sites More sharing options...
RZBansheeMan Posted August 21, 2007 Report Share Posted August 21, 2007 Thanks for the update "Turbo". Quote Link to comment Share on other sites More sharing options...
TurboBanshee420 Posted August 21, 2007 Author Report Share Posted August 21, 2007 haha... you can call me Ben, rzbansheeman Quote Link to comment Share on other sites More sharing options...
RZBansheeMan Posted August 21, 2007 Report Share Posted August 21, 2007 Now if you can only come up with a down scaled roots blower so that thing will be boostin at idle........... Maybe somebody could machine one up. Mike Quote Link to comment Share on other sites More sharing options...
TurboBanshee420 Posted August 21, 2007 Author Report Share Posted August 21, 2007 Actually with a HAAS CNC now in the family... my brother and I have been throwing around the idea of taking a over sized turbo an building a supercharger that would drive off the flywheel. Small gearsets are easy to come by and the case could be machined into an exact copy of the stator cover. but that is just a dream at this piont. I'd like to get into some options for my baby scarab first.(sprint 18) One thing at a time until I get into my new house. $$$'s short right now. you guys give me something I can make for all of you and I'll make sure it gets machined. My brother is dying to test the limits of the CNC (TM-2). I'm sure somebody needs something we could all use but nobody makes. Submit your ideas people! How about some swirl domes (like ski-doo did on the first mx-zx) to run a higher comp without using race gas? ski-doo got 114hp out of a 440 with that motor reliably just a thought... Quote Link to comment Share on other sites More sharing options...
RZBansheeMan Posted August 21, 2007 Report Share Posted August 21, 2007 I don't know who cuts them but I have seen some "turbo" cut domes that I am assuming is what you are referring to as swirl domes. Quote Link to comment Share on other sites More sharing options...
TurboBanshee420 Posted August 21, 2007 Author Report Share Posted August 21, 2007 I always thought the "squish-band" idea on a 2 stroke could be greatly improved apon. It's only meant to keep the explosion away from the rings. I could see a different style working alot better than what we have. Myabe something to help keep some fresh charge inside the cylinder. It would take more than just a wim for a real change to take place though. I bet rotax spent at least a million on there dome design in research. A few years ago I was messing around with a design for a carb that would work like the iris in your eye. but instead of a bunch of flat blades to make the iris. I was going to do something like a variable venturi size. So it would be a smooth transition. I still have a half done proto-type in a box somewhere. Spring steel is what I used for the iris blades. I admit it was wierd but very promising. think of each pulse carrying a "smoke-ring" of fuel, instead of the messy turbulence that circles behind your crab slide. The power-now insert is a devise that helps to stop the turbulence and look at all the attention they are getting with that.... If I had a $100 for every idea I've had, I could afford that cheetah knuckle-head was blabbin about :yelrotflmao: I spend too much time thinking about airflow and HP!!!!! I must have somekind of disease.... maybe it was all the race gas fumes I inhaled as a kid. :shrug: remember... the most advanced invention ideas were spawned from "crazy-talk" Quote Link to comment Share on other sites More sharing options...
Coupelx Posted August 21, 2007 Report Share Posted August 21, 2007 A guy ran 7.17, 6.86, and then a 6.66 in a 1/8th mile last sunday with a turbo banshee. The turbo is from a Mazda Miata.For some reason it won't build boost on the line until he let off the clutch and then right before 60ft then the boost hits and its on the wheelie bar. you need airflow to get the turbo to spool. That requires throttle. the problem is the engine wants to rev to infinity without a load on it if the throttle is pegged. The solution is a 2 step rev limiter like i have on my 2.3turbo mustang, you activate the 2 step and then ped the throttle. light turns green and the clutch is dumped, usually disenguaging the 2 step so it wont reactivate during the run. its like when you put on the parking brake on your banshee and then try and rev it. it wont and starts to 'miss' this is a form of a 2 step rev limiter. Quote Link to comment Share on other sites More sharing options...
TurboBanshee420 Posted August 21, 2007 Author Report Share Posted August 21, 2007 that's y I love megasquirt! Quote Link to comment Share on other sites More sharing options...
RZBansheeMan Posted August 21, 2007 Report Share Posted August 21, 2007 (edited) You could tear upart a camera, that has a shudder in it, like you are describing for the iris. I have though about that before myself, but no means to put a lot of these ideas in motion. Another thing I wodered how well would work, is a barrel slide like that on a RC car/boat/plane carb, if you look thru an RC carb venturi as you open it, it's a liittle more elipticle vs. a Banshee carb as you move the slide it's more of a "D" shaped venturi. I also wondered if this could be possible : Take a 2:1 intkae design such as the Graydon and mate 2 carbs to the inlet side, maybe a smaller one for your throttle response low to mid and a slightly bigger one for the transition from mid to top, with a progressive linkage, kinda like how a spread bore 4 bbl carb works on a vehicle. Whether any of these ideas makes sense or not, my wheels are always turning. Edited August 21, 2007 by RZBansheeMan Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.