Welcome Nate!!!!! I usually welcome Newbie in a introduction thread under general chat, but you never started one. So WELCOME, Its good to see another motor builder with NEW info to help us smoke some 4 strokes...lolI:I
Did I miss it or was the question answered about if this was rear wheel or crank hp #'s?
Have you ever seen crank horsepower checked on an atv?? I never have in the real world. Every dyno in my area is run of the rear wheels because of so many diferant crank variables.
We explained early on that these were dynojet rear-wheel numbers. On the same dyno the stock motor made 16ish hp.Did I miss it or was the question answered about if this was rear wheel or crank hp #'s?
We explained early on that these were dynojet rear-wheel numbers. On the same dyno the stock motor made 16ish hp.
As to an update:
Since this thread started we have put quite a bit of time on the blaster setups, and we are very happy with how they are running. And by no means does the dyno number misrepresent the real-world performance. Instead it confirms it
We had some fun this summer running in the dirt, and at Little Sahara, in Wynoka, Oklahoma.
We have also tested a pile of inframe pipes, on various cylinders combos.
We have tested the Vitos "fat, and illegitimate" pipe, and were not impressed with the narrow power curve, but made ok peak power.
We tested other blaster inframes, and found that it is pretty easy to get into the high 20s to low 30s with many combinations, but things have to be working well on a stk stroke motor to approach the 40hp world. As a matter of fact no production inframe has done it on any of our 3 test motors. Most were as poor as 26-28, while the stock pipe, on the same motor was 23+, lol.
There are several reasons for that. And on our motor setups the common production pipes are severely mismatched with our setups.
The stamped shearer inframe had a nice curve, and worked well, at about 30hp, but was also out of it's league with the highly modified.
It is clear that the blaster world is hurting for a good inframe. And if the ones we have tested are representative of all you guys have to work with.
I now see the reason for much of the skepticism. And on the stk cylinder, 47hp on gas is essentially unbelievable with the pipe design the Blaster world is trapped in.
But the technology exists...
Now the question that we have to wrestle is, will the market support a new blaster inframe???
No, not on any of my setups. And I don't have any to test, or I would. But I do have friend who tested them both against the vito's pipe, and they both made less power...