D34 Posted January 16, 2005 Report Share Posted January 16, 2005 i dont know right off hand how far it is. when i dynoed it last time it didnt have that chopped up shit at the end. only thing i can guess is that the needle may need to move one way or the other or possibly that my air filter was dirtier than fuck. timing is at +7. im sure it was prolly in the needle or the fact that my air filter was dirty. it was just gettin late and i didnt wanna mess with the jetting too much since his air/fuel sensor wasnt working. im gonna be taking it back when he gets that shit fixed. 307384[/snapback] can u take a pic of ur filter setup? shouldnt b the needle unless the slides were not opening all the way or the operator was not at full throttle Quote Link to comment Share on other sites More sharing options...
sp1tekiller Posted January 16, 2005 Report Share Posted January 16, 2005 Wow, that CR500 bike should be makin some mean horsepower. Quote Link to comment Share on other sites More sharing options...
01bansheeke Posted January 16, 2005 Report Share Posted January 16, 2005 I see a little competition. Pull those rockets off when you take stevens motor out there. Let him run the rockets and the cpi's. Should definitely prove a point..That should tell you if the rockets and cpi's react to different port work etc. Quote Link to comment Share on other sites More sharing options...
cam2 Posted January 16, 2005 Report Share Posted January 16, 2005 single k and n filter runnin into both carbs.. 2 into 1 type of set up. my builder wants to test them on his 10mm bike vs cpis. so hopefully itll help to see what kinda engines they work best on. nugshee, they are def badass pipes. im sure that one some engines one is gonna be better than the other. im hoping to get them tested on a few different motor setups. a 10mm and my bros 4mm will be in the very near future.... 307370[/snapback] yeah different pipes should run different on different engine set ups but one thing is for sure is that you definitely know which pipes work real well with your set up, very nice. the CPI's come on a little sooner and the mid range is basically the same with the Rockets having a slight advantage but what i'm most impressed with is the Rockets are still building HP when the CPI's are dropping off. Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted January 16, 2005 Author Report Share Posted January 16, 2005 I see a little competition.Pull those rockets off when you take stevens motor out there. Let him run the rockets and the cpi's. Should definitely prove a point..That should tell you if the rockets and cpi's react to different port work etc. 307427[/snapback] i think stephen is going to be using rockets on his engine. what we will prolly do is set it up to use rockets, then also test the cpis. i would be willing to bet that even on that engine the rockets are going to be the stronger pipe. yeah different pipes should run different on different engine set ups but one thing is for sure is that you definitely know which pipes work real well with your set up, very nice. the CPI's come on a little sooner and the mid range is basically the same with the Rockets having a slight advantage but what i'm most impressed with is the Rockets are still building HP when the CPI's are dropping off. we will soon know. im hoping to test the difference on several other engines including another 4mm and a 10mm set up. everyone there last night was impressed with the rockets and i even had a few ofthem saying they wanted to try them out. sp1tekiller, im sure its gonna be makin some crazy hp butthe torque number is what im most interested in...should be very high. d34, here is my air filter setup... Quote Link to comment Share on other sites More sharing options...
D34 Posted January 16, 2005 Report Share Posted January 16, 2005 d34, here is my air filter setup... 307466[/snapback] from the looks of that filter setup i would try leanin it out alittle maybe a 150 main... with 4in long pods i run 150 summer, 160 winter... at a race as it was gettin colder i put on a 6in long filter and it got hot and seize on me (cant remember if i had 150 or 155 n at the time)... when it cooled off i put the 4in back on and ran the main (more laps) and it never got hot, so i know im right on with the jettin Quote Link to comment Share on other sites More sharing options...
wesw Posted January 16, 2005 Report Share Posted January 16, 2005 i thought stephen was going to use shearers pipes. now that would be a great comprasion. use all 3 of the pipes to see what does the best with the 3 of yours motors Quote Link to comment Share on other sites More sharing options...
stclark816 Posted January 16, 2005 Report Share Posted January 16, 2005 i thought stephen was going to use shearers pipes. now that would be a great comprasion. use all 3 of the pipes to see what does the best with the 3 of yours motors 307507[/snapback] I was going to, but my builder told me that they were kinda too peaky for his motor. But he also said that CPI's are the best pipe for ported motors. But, after seeing the rockets out perform the CPI's, I think Im sold on the rockets. I like the look of the rockets, I think CPI's are kinda plain looking. They are still a great pipe though. Im supposed to have my motor back at the end of this month. Well see what happens. Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted January 16, 2005 Author Report Share Posted January 16, 2005 from the looks of that filter setup i would try leanin it out alittle maybe a 150 main... with 4in long pods i run 150 summer, 160 winter... at a race as it was gettin colder i put on a 6in long filter and it got hot and seize on me (cant remember if i had 150 or 155 n at the time)... when it cooled off i put the 4in back on and ran the main (more laps) and it never got hot, so i know im right on with the jettin 307473[/snapback] 150 im sure will be too lean for my setup. when i first dialed it in on the dyno it was around 45 degrees. the next day it went down to around 30 and i rode it and it was cuttin out on top so i had to jet it back up a little. its like 20 degrees here now. im not too concerned about jetting it perfectly for the winter since i wont be really running it that much. spring is when ill be making sure its jetted perfectly. my bros builder said the cpis were the best but im willing to bet that even on his engine the rockets would pull more power. i wish we would have thrown them on his bike now that i think about it. oh well, we will have more dyno sheets coming soon... Quote Link to comment Share on other sites More sharing options...
FireHead Posted January 16, 2005 Report Share Posted January 16, 2005 well boys and girls here it is. CPI vs rockets. went to the dyno today to see the difference and it came out like i thought it would. there were about 20 guys there and they were VERY surprised, and disappointed. i even had a guy call my rockets "fugly". so after he saw this i rubbed it in that my "fugly" pipes make more fuckin power than his did...rocket made more hp and torque than the cpis. see for yourself. oh yea, it dynoed at 77.3 hp with the rockets and 74.2 with the cpis. cant remember exactly the difference on torque, i think it was right around 3 lbs. i also put the cr500 banshee on the dyno but for some reaosn it wouldnt read the rpm's right. once it got to 3800 rpm it wouldnt read anymore. the guy running the dyno said he never had that problem before and that hed get it fixed so i could bring it back and run it agian. at 3800 rpm when the dyno quit reading it was making 60 hp. i figure it revs out somewhre around 8000 rpm or so. i figure that thing is making some pretty good hp. 307276[/snapback] No offense, but that dyno you were running on is a piece of shit inertia dyno. I wouldn't trust any numbers that come off it. You could use it to jet your bike under load, but thats about it. Quote Link to comment Share on other sites More sharing options...
wesw Posted January 16, 2005 Report Share Posted January 16, 2005 No offense, but that dyno you were running on is a piece of shit inertia dyno. I wouldn't trust any numbers that come off it. You could use it to jet your bike under load, but thats about it. 307516[/snapback] ok im stupid why is it p.o.s. dyno i havent a clue about them but why is it junk Quote Link to comment Share on other sites More sharing options...
FireHead Posted January 16, 2005 Report Share Posted January 16, 2005 ok im stupid why is it p.o.s. dyno i havent a clue about them but why is it junk 307517[/snapback] Here's the deal, it may be a very nice inertia dyno, but it's instrumentation package is very old, which is why I called it a POS. Inertia dynos in general are not very accurate and are used more for tuning than benchmarking power. An inertia dyno basically measures how long it takes for a flywheel to reach a certain speed and then extrapolates hp and torque from that time given the known weight of the flywheel. With that said, water or oil brake impeller type dynos are where its at due to thei ability to read much more accurately, react to atmospheric deviance, and vary the load on the dyno specimen. In addition, they usually come better instrumented. There is a third kind of dyno out there that you will see, known as a mechanical brake dyno, this is like a water or oil brake dyno except is usec a large disc brake pack to load the specimen. You can see where this type of dyno goes wrong, but oncae again you could certainly tune on this type of dyno. If you live anywhere near WA, you can come roll on my work's dyno whenever you want. Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted January 16, 2005 Author Report Share Posted January 16, 2005 ok im stupid why is it p.o.s. dyno i havent a clue about them but why is it junk 307517[/snapback] maybe hes just gay!!! Quote Link to comment Share on other sites More sharing options...
wesw Posted January 16, 2005 Report Share Posted January 16, 2005 Here's the deal, it may be a very nice inertia dyno, but it's instrumentation package is very old, which is why I called it a POS. Inertia dynos in general are not very accurate and are used more for tuning than benchmarking power. An inertia dyno basically measures how long it takes for a flywheel to reach a certain speed and then extrapolates hp and torque from that time given the known weight of the flywheel. With that said, water or oil brake impeller type dynos are where its at due to thei ability to read much more accurately, react to atmospheric deviance, and vary the load on the dyno specimen. In addition, they usually come better instrumented. There is a third kind of dyno out there that you will see, known as a mechanical brake dyno, this is like a water or oil brake dyno except is usec a large disc brake pack to load the specimen. You can see where this type of dyno goes wrong, but oncae again you could certainly tune on this type of dyno. If you live anywhere near WA, you can come roll on my work's dyno whenever you want. 307520[/snapback] so basically the dyno that he used is outdated compared to what is available with the technology that is around today.. ok well being from the midwest, me from ks, we are po dunk, you have to use what is available. hell we just got electricity last yr, and running water, tired of the ol outhouse. a toilet is where its at. anyways its a joke Quote Link to comment Share on other sites More sharing options...
FireHead Posted January 16, 2005 Report Share Posted January 16, 2005 so basically the dyno that he used is outdated compared to what is available with the technology that is around today.. ok well being from the midwest, me from ks, we are po dunk, you have to use what is available. hell we just got electricity last yr, and running water, tired of the ol outhouse. a toilet is where its at. anyways its a joke 307532[/snapback] It's not that the dyno you were on is outdated just because of it being an inertia type, its out dated because I recognize the software that made your dyno sheet. You can buy a brand new inertia dyno today, if you wanted to, and all that you are going to do is tune on it. Though maybe you should worry less about your bike and more about buying a a toaster or something since you just got electricity. Quote Link to comment Share on other sites More sharing options...
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