Turbobike Web Site www.Turborick.com
Couldnīt you use a ignition retard on the starting line wich retarded qite heavily? I belive that would create extremly hot exhausts wich in turn would spool up the turbo by the moving energy in the hot gases. I belive there is one guy here in Sweden that uses it with great sucess. Is there anybody in the U.S using another turbo than the common Rayjay, Garrett, Aerodyne? I have seen extremly good results with Mitsubishi, KKK and especially Schwitzer, wich I belive will outperfom even many ball bearing turbos. There is a Swedish based dragbike team that uses a Schwitzer S300 turbo on their pro mod (or is it funny bike?) with great results. They have runned 6,93 at 209mph on gasoline ,so far. Christer shammar@nsk-corp.com skrev: > The reason the fuynnybikes wing their engines is that the turbos are huge units > (really almost over-sized for the application and unusable on the street) and > they want boost immediately off the line. The only way to build boost on the > line is to spin the turbine by increasing the mass airflow past the turbine. > Simply holding the revs up won't do it since the throttle body or carb is almost > closed and flows little air. So you have to either get wildly on and off full > throttle or go on the 2-step. A healthy nitrous dump off the line also brings > the boost up. Once you're up, however, then you're running 40-50 psi boost and > 500+ horsepower, depending on your combination. > > Your Aerocharger is a very small turbo compared to your friends draw through > (probably an FF40 Rayjay). His turbo will ultimately make more power, but yours > is more user friendly on a street machine. The Rayjay is also a very old, high > inertia design which doesn't help. The normal thing to do on the old Rayjays is > build as much displacement into the engine as possible to make a better match to > the turbo. My old FJ wouldn't build any appreciable boost until 6000 rpm with > the stock 1098 motor, and then it was like being kicked by a mule. By bumping > it to 1314cc it built boost at 4000 rpm and only brought peak power down from > 10,300 to 10,000 rpm. It filled in the midrange like you wouldn't believe and > made it much more fun to ride. > > L8R > > ABNZX9@aol.com on 11/23/99 04:28:06 AM > > To: turbobike@natvideo.com > cc: (bcc: Bob Shammas/EQA/Nsk-Corp) > Fax to: > Subject: Re: [turbobike] Carb Question > > In a message dated 11/22/99 4:21:19 PM US Eastern Standard Time, > shammar@nsk-corp.com writes: > > << I believe that the amount of time it will > take to fill the plenum will be insignificant. > > >> > Could this be why some turbo dragbikes rev the bike repeatedly at the line? > That is one thing I really like about my Aerodyne compared to a friends draw > thru turboed GSXR my bike has no turbo lag whatsover.