Want to keep your FD cool?
12-03-07, 05:57 PM
#28
I know some stuff
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Sorry guys for just getting back to you now, i was running around all weekend and havent had time to do anything.
The company that made the pump is my fathers company, he is an engineer/inventor. he has over 30 us patents including the impeller desing. here is a link to our company, maybe you have heard of us? http://www.boyesen.com/cwo/Home
anyway, i love rotaries and new of there heating issues. we have had good success with our water pumps on motorcycles, so i asked my father if we could one for the rx7. and then we discussed on making the water pumps for the automotive market. so we thought the rx7 would be a good place to start.
we have alot going on in the buisness, so our focus is not on the water pump right now. but that doesnt mean that it will never be!
anyway, if anyone has anymore questions please, feel free to ask!
Glen Boyesen
The company that made the pump is my fathers company, he is an engineer/inventor. he has over 30 us patents including the impeller desing. here is a link to our company, maybe you have heard of us? http://www.boyesen.com/cwo/Home
anyway, i love rotaries and new of there heating issues. we have had good success with our water pumps on motorcycles, so i asked my father if we could one for the rx7. and then we discussed on making the water pumps for the automotive market. so we thought the rx7 would be a good place to start.
we have alot going on in the buisness, so our focus is not on the water pump right now. but that doesnt mean that it will never be!
anyway, if anyone has anymore questions please, feel free to ask!
Glen Boyesen
12-03-07, 10:05 PM
#29
Eye In The Sky
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You should figure the rpm range for a stock pump with a normal pulley and underdrive pulley when run at 4000 - 8500 rpm of engine speed.
Then test both pumps at both ranges. Comparative graphs would give "USEFULL"
data.
I think you missed the class in Comparative Testing 101.
Thus your posting is useless!
12-03-07, 10:23 PM
#30
Pobody's Nerfect
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The posted results are meaningless as the tests are unequal and the later at too high of a rpm. A real waste.
You should figure the rpm range for a stock pump with a normal pulley and underdrive pulley when run at 4000 - 8500 rpm of engine speed.
Then test both pumps at both ranges. Comparative graphs would give "USEFULL"
data.
I think you missed the class in Comparative Testing 101.
Thus your posting is useless!
You should figure the rpm range for a stock pump with a normal pulley and underdrive pulley when run at 4000 - 8500 rpm of engine speed.
Then test both pumps at both ranges. Comparative graphs would give "USEFULL"
data.
I think you missed the class in Comparative Testing 101.
Thus your posting is useless!
good freakin looking product. more test results!!!!
12-04-07, 04:28 PM
#32
I know some stuff
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"The posted results are meaningless as the tests are unequal and the later at too high of a rpm. A real waste.
You should figure the rpm range for a stock pump with a normal pulley and underdrive pulley when run at 4000 - 8500 rpm of engine speed.
Then test both pumps at both ranges. Comparative graphs would give "USEFULL"
data.
I think you missed the class in Comparative Testing 101.
Thus your posting is useless!"
Just as willub and company said, our pump held pressure and increased flow up to our desired rpm, and stocker couldnt even do that, thats way i stated it that way. i gave the top flow numbers and there given rpm range. i dont have the full number sweep infront of me, but i could get a graph made of the both of them of, which i am planning on doing anyway. you'll just have to bare with me cause i'm am busy right now with school ending.
also, as i recal, that max rpm is what a stock pulleyed water pump would spin at on a high performance race engine. figured that would be our highest rpm and since most everyone will put bigger pulyes on them, anything else above that would be useless.
i'll give you the run down on what exactly we did when we tested it. first we made a ficture that we could acurately test the water pumps under a controlled invironment. then we put an electric motor on that drived the water pump. on the pumps impeller we put a pickup for our rpm reading. we put some sort of varialbe control ****(sorry not very good with electrical) to adjust the motors speed. then inline in the outlet tube we tube a high quality flow sensor. on our variable control **** we some how had a output snesor to see how hard the motor was working to spin the pump. this way we could see how the pumping efficiancy corilated with the pumping volume. then we ran the system up to our certain checking speeds and wrote down the the flow rate and how hard the motor worked at that impeller speed. then we went up in rpm's to meet all our checking rpm speeds and repeated the process. so, with that information we can see that not only does our pump pump more volume then the stock all through the different operating rpm's, but we can see how hard it was to pump our pump vs the stocker at those given rpm's. and that shows that if you want the same flow numbers as stock, you can put a big pulley on it and you will free up horse power due to our pump bieng more efficient and easier to pump! oh, i forgot to mention that we also put a clear plastic tube on the outlet of the pump to physicaly see how the pumps cavitate the water. all i can say is the stock one is horrible!
Glen
You should figure the rpm range for a stock pump with a normal pulley and underdrive pulley when run at 4000 - 8500 rpm of engine speed.
Then test both pumps at both ranges. Comparative graphs would give "USEFULL"
data.
I think you missed the class in Comparative Testing 101.
Thus your posting is useless!"
Just as willub and company said, our pump held pressure and increased flow up to our desired rpm, and stocker couldnt even do that, thats way i stated it that way. i gave the top flow numbers and there given rpm range. i dont have the full number sweep infront of me, but i could get a graph made of the both of them of, which i am planning on doing anyway. you'll just have to bare with me cause i'm am busy right now with school ending.
also, as i recal, that max rpm is what a stock pulleyed water pump would spin at on a high performance race engine. figured that would be our highest rpm and since most everyone will put bigger pulyes on them, anything else above that would be useless.
i'll give you the run down on what exactly we did when we tested it. first we made a ficture that we could acurately test the water pumps under a controlled invironment. then we put an electric motor on that drived the water pump. on the pumps impeller we put a pickup for our rpm reading. we put some sort of varialbe control ****(sorry not very good with electrical) to adjust the motors speed. then inline in the outlet tube we tube a high quality flow sensor. on our variable control **** we some how had a output snesor to see how hard the motor was working to spin the pump. this way we could see how the pumping efficiancy corilated with the pumping volume. then we ran the system up to our certain checking speeds and wrote down the the flow rate and how hard the motor worked at that impeller speed. then we went up in rpm's to meet all our checking rpm speeds and repeated the process. so, with that information we can see that not only does our pump pump more volume then the stock all through the different operating rpm's, but we can see how hard it was to pump our pump vs the stocker at those given rpm's. and that shows that if you want the same flow numbers as stock, you can put a big pulley on it and you will free up horse power due to our pump bieng more efficient and easier to pump! oh, i forgot to mention that we also put a clear plastic tube on the outlet of the pump to physicaly see how the pumps cavitate the water. all i can say is the stock one is horrible!
Glen
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