Ya its getting pretty bad when they delete posts that many people can gain knowledge and understanding from. Good thing for A-T-V-S-O-U-R-C-E.com and others that won't ban such informative posts.

 

samson:
Be VERY carefull! Thats a very good way to get kicked from here...
Bash:
No I dont think that will do any good...... I am sure they have already asked Tom to leave and not to post in here anymore(or revoked his privileges so he can't) I for one would like to see a more civil msg board but I think thats just a pipe dream now. There used to be alot of great posts here.... Now I just weed through the crap and read what I think is worth it. I now spend my time at other forums with less trash talk and more insightfull and intelligent posts.

walter (wishing that Tom Darnell returns)
88 Banshee 370
95 Dodge Ram 4x4
99 Quadbuddy

 

well the B-a-n-n-e-d me also for what reason?

 

Does anybody know how pro circuit pipes perform on the banshee ?

Thanks

 

MY DAD TALK TO DAN BEFORE HE LEFT AND HE SAID IT MADE 148 HORSE POWER AT THE REAR WHEELS WHICH WOULD PUT IT AT ABOUT 180 AT THE MOTOR.

 

yes it put out 148hp on dan's dyno a few days before he headed out to glamis, me and dan have become very good friends since he has built my motor, he does excellent work also, and like b370 said themotor wasnt created to ride every weekend at the dunes, it was for a few purposes, to advertise his shop, and to become kng of the hill which seemed to work for him, he said he has tons of phone calls in the last week since he's been back. and i also think thats its rediculous to delete a forum, instead of deleting it, if there i anything that should be done for some odd crazy wacko reason, just make a reply and let everyone know whats wrong with it so it wont happen again

 

Some Technical Info:
The prototype turbo motor made 143HP at the rear wheels @25PSI of boost. Using a 13% power loss factor which we have found to be very accurate on Dan’s single rear wheel dyno, the motor made (1.13 x 143 RWHP = 161.6 BHP) 161.6 BHP. Because a turbo has a pre-designed airflow curve and efficiency curve defined by its compressor map, we can accurately define what the engines output will be based on the pressure ratio the turbo is driven at. The turbo is basically an airflow metering device which can almost act as a dyno when the engine is properly fueled and the boost level is known. Dan’s quad acted just as we had expected based on the turbo we used, it made 160BHP.
The turbo used on A&S’s bike was designed to produce 130BHP at 18psi of boost. At this point the turbo is operating at 90% efficiency with an operating speed of 120,000 RPM. As the pressure ratio is pushed up by increasing the boost (25psi) the turbo used on A&S’s quad is capable of producing 160 HP but it is now operating at only 70% of its efficiency and the turbine rotors operating speed is at over 165,000 RPM. At this point the turbo is exceeding its maximum RPM threshold of 140,000 RPM and will not be reliable. But we did it anyways to see if the engine was capable of handling the power output.
When Dan took the motor package to Glamis it was to showcase the technology’s potential and also work on refining the packages reliability. Based on the dyno results and the quads 300lb target weight we had theorized that the quad would run 80+MPH at 20psi of boost (130RWHP or 147BHP), but we had a several questions to be answered. We had previously tested a 365lb bike which went 78MPH up Olds at 130RWH and two months before Glamis Thankgiving, while doing some night testing with D&M racing out of Pheonix, we had a 420lb Quad go 76MPH. The question was, how was it possible that two bikes that were 55lbs different in weight and had similar weight riders could run so close together in speed. The answer lied in the HP, but we did not know why the 420lb quad would make more HP than the 365lb quad, when the packages were the same.
Dan discovered that the difference was the gear ratio of the quads.
Dan’s week started on Monday with 74MPH runs with a 15-44 gear ratio up Olds. We had discovered early on that the more load you put to the turbo quads the harder they would pulled on the flats, and remembering that the 420lb quad had a 16-40 gear ratio, this is where Dan started. By the end of the day Tuesday he was running 83.5MPH using a 17-40 gear ratio, 25” 12 paddles, and a 14” over swing arm.
We now theorize that as the turbo engines are loaded, the pipe temperature elevation increases the backpressure on the exhaust turbine driving the turbo back into a higher efficiency range and therefore producing more torque and horsepower with know boost level increases.
Knowing this, we are building a new turbo for Dan’s bike that should push it up Olds at 87-90MPH over the Presidents Day Holiday. It may be some time before the kits are ready for release but this technology is by far the future of extreme performance quads.
So stay tuned and stay curious,

 

You are correct I can't believe that you guys didn't take that into account earlier since you know the in and outs of turbo chargers as exaust gas temperature rises the turbine will spin faster and intern raise your boost level at least on a diesel engine this is what occurs. Sounds really cool to me though have they given thought to air to air after cooler or that out of the question

 

My quad did over 80 on olds hill... on the way DOWN!

OK, not really. I bet I had you ALL fooled too.

I am still trying to figure out how to stuff that Yamaha R1 motor into my Banshee frame...

Anyone got a big shoe horn?

 

I saw it at buttercup for a couple of runs and to the naked eye, it clearly out accelerated anything out there. (rails, big blocks etc.) This is a PHX local bike; I've seen it on the street. There are a few shops that have some big bore banshees that are dying to see if they can hang. In response to us immature types that like some good competition by posting mines faster type threads, you've done it too...