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Post by yellowshark on Dec 5, 2008 17:10:48 GMT
Concerned over why Keith keeps beating you? Don't worry, now you can ensure you keep your brushless motor in tip top condition with a Brushless Analyser System. A snip for only £150 and only twice the price of a lathe for keeping your brushed motors at the top.  Can you afford not to  |
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Post by TryHard on Dec 5, 2008 17:55:56 GMT
er... yeah, I can....  My brushless motors won't require constant fettling to be fast... never have to worry about toasting the magnets and needing to rezap the cans with a £400 zapper...  |
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Post by Reuben on Dec 5, 2008 19:01:33 GMT
is that the speed passion thing? thought it look a little to pricey and is it a needless toy? especially for stock?
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Post by Simon Crabb on Dec 5, 2008 22:56:40 GMT
Ooh, it does look rather nice though! Brushless at the moment is all a mysterious suck it and see affair, it would be nice to have some numbers to see what was going on.
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Post by mattsedgley on Dec 5, 2008 23:18:02 GMT
I'm sure some more seasoned racers will be able to explain this in more detail, perhaps Les?? - However the readouts that the motor tester will give are only useful to a certain extent and may be missing important information.
Matt
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Post by lesbaldry on Dec 6, 2008 8:30:17 GMT
The "Blurb" on this might be gimik is a bit unclear??
The important part of any motor checker/Dyno is Watts,Torque,and importantly most efficient RPM band for getting the perfect FDR!....is it nessasery??..rather play with one to find out first
Efficient RPM band...two motors can have the same max rpm and power output but the efficient rpm band can differ ie completely different FDR's
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Post by yellowshark on Dec 6, 2008 9:42:09 GMT
Interesting, please do carry on Les. E.G. How does one know that engine As band is 20-22K and what is the implication when comparing with Engine Bs which is 16-18K?  |
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Post by lesbaldry on Dec 6, 2008 10:23:53 GMT
Interesting, please do carry on Les. E.G. How does one know that engine As band is 20-22K and what is the implication when comparing with Engine Bs which is 16-18K? Ill do my best Pete...but Its best seen on a dyno that has this reading....efective/eficiant rpm is the point that a motor gives its best overall perfomance taking into consideration a mix of torque and watts (a sweet spot)...Brushed motors are normaly a little over half max RPM but brushless seem to be well below half max rpm..ie very torque'y hence the higher gearing that is used,this make a BL motors sweet spot quite hard to find due to it low rpm band compared to a BR'ed...only a dyno with this type of reading will give racers a clue "between motors" the best way to gear a motor compared to a similar motor that has the same max power output...Hope that made sense??? |
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Post by yellowshark on Dec 6, 2008 11:02:39 GMT
Yes and no Les ;D Where I was trying to get to was that given my example, if you got both engines were geared appropriately, would one engine be better than the other?
And also I guess, given that you identify the sweet spot with the equipment, how do you know what FDR to implement if you don't have sensors on the car measuring the rpm?
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Post by lesbaldry on Dec 6, 2008 11:10:23 GMT
Yes and no Les ;D Where I was trying to get to was that given my example, if you got both engines were geared appropriately, would one engine be better than the other? And also I guess, given that you identify the sweet spot with the equipment, how do you know what FDR to implement if you don't have sensors on the car measuring the rpm? Only a Dyno will tell you that Sweet spot...experiance Pete,but at least the Dyno will tell you wich way to go....the lower the band the higher the fdr compared too..... |
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Post by yellowshark on Dec 6, 2008 12:28:35 GMT
Yes and no Les ;D Where I was trying to get to was that given my example, if you got both engines were geared appropriately, would one engine be better than the other? And also I guess, given that you identify the sweet spot with the equipment, how do you know what FDR to implement if you don't have sensors on the car measuring the rpm? Only a Dyno will tell you that Sweet spot...experiance Pete,but at least the Dyno will tell you wich way to go....the lower the band the higher the fdr compared too..... OK got it Les. Nice toy but doesn't replace getting your hands dirty on the track. |
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Post by oldtimeracer on Dec 9, 2008 13:50:03 GMT
Oh I like the look of this. A new gadget to play with. If I sell the lathe, dyno, brush serrator, motor hood spanner, brush hood aligning tool, motor zapper etc I should be able to afford it and have some money left over!
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Can you afford not to 
