Dyno runs

[1800bigk]

Here are some misc dyno runs from a shop near by me. There are only a couple banshee dyno runs but its interesting to see how weak some other atv's are compared to the banshee.

 

 

http://www.geocities.com/gtthunder.geo/testbed_set.html

[rocketboy]

good post 1800 , banshees are in a league of there own they just plain kick so much ass

i was a bit surprised to se the yfz400 dynos! a damn modded 400ex was even with it for the most part till the top rpms !you gotta love 2 strokes

[wesw]

that one banshee with the "stage 2 port" made like 68 hp

 

thats kinda fishy to me, must be a drag or stroker to do that

[Ducman]

Those are good comparisons. Its really hard to compare #'s from one dyno to another but if you put bikes on the same dyno back to back then you can compare apples to apples. I was pretty depressed about the #'s I got from my 4mm set-up because they were lower than I expected, got 60, was looking for at least 70. Plus nobbies, especially stock tires will eat a few HP and 1/4" of rubber, also a good dyno lesson I learned. The builder/ dyno operator/ owner said don't wory, we get guys that claim all kinds of HP #'s on a ported 350 motor, and then we put them on our dyno and there lucky if they get over 50 hp. One reason is because they use SAE reading rather than actual. He said that they get 43 HP every time they run a YFZ with a full system and open airbox when it is jetted optimum and its fairly hard to get them over 50 hp even with cams, piston, and porting. Even more pathetic is they get 29 HP out of a stock Z-400. The builders/ owners are a father son team. The dad has a Z-400 that is fully built but still 400cc that put out 45 HP on their dyno. He says it will spank piped YFZ's at the dunes bad, which makes them want to cry when they realize they've been wooped by a Z. But the sons +4mm banshee puts down 70 HP on their dyno with an MX type port, Dyna FS, 35mm carbs, LRD pipes.

 

They say SAE is more consistant because for one thing their dyno is portable and the same bike will get way different #'s at different air temps, humidity, barometric pressure, ect. With SAE you will get much more repeatable results but it wont look as good. They bought the same dyno as LRD and were trained by LRD's owner.

[1800bigk]

they dynoed a stock banshee and it got 36hp, so it sounds pretty accurate to me.