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Post by Reuben on Dec 9, 2008 22:11:58 GMT
why do you think I was SO quick to adopt brushless . One SLCC meeting of having to skim and clean after each round without the proper equipment (and that was with lipo) was enough to pursuade me.
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Post by yellowshark on Dec 10, 2008 0:13:40 GMT
why do you think I was SO quick to adopt brushless . One SLCC meeting of having to skim and clean after each round without the proper equipment (and that was with lipo) was enough to pursuade me. Jeez Reubs I have only ever skimmed an engine at trackside once - that was once during the meeting, not every race!!!!!! You obviously had nothing better to do ;D
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Post by yellowshark on Dec 10, 2008 0:19:32 GMT
C'mon Les, the Brushless one is frowning at gear charts too, borrowing huge pinions, changing speedo punch settings, figuring out how to advance motor timing, making sure his fan is not full of leaves / mole poo and wondering where the club temp gun is (can we keep it near race control all the time please!!)... Well said Simon. The only thing I do is reface the brushes - 10 secs each, say 30 secs top wack and clean the brush holders, say 20 secs each. Leave splenty of time for polisng the bodyshell to a fine shine
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Post by Reuben on Dec 10, 2008 8:02:30 GMT
yeh i didnt skim every round, that was my lack of grammer :S, just clean and rebuild the b***er just to keep up.
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Post by lesbaldry on Dec 10, 2008 8:03:26 GMT
Pete now we Know why your motors are slow ;D
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Post by yellowshark on Dec 10, 2008 12:37:38 GMT
Pete now we Know why your motors are slow ;D ;D ;D ;D ;D ;D
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Post by TryHard on Dec 10, 2008 14:15:33 GMT
aye, if your not skimming and rebrushing every round, your not pushing em hard enough... Having witnessed the guys at the nationals doing this (well actually having 3 motors, all ready to go with new brushes etc, then rotating through them) there's a certain appeal for not doing it. And don't forget... you'll remove less material from a comm if you skim more regularly, as it burns less
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Post by lesbaldry on Dec 10, 2008 14:35:54 GMT
aye, if your not skimming and rebrushing every round, your not pushing em hard enough... Having witnessed the guys at the nationals doing this (well actually having 3 motors, all ready to go with new brushes etc, then rotating through them) there's a certain appeal for not doing it. And don't forget... you'll remove less material from a comm if you skim more regularly, as it burns less Plus all the off track hours spent infront of a dyno working out your best motor with various spring /brush combos for best torque/rpm....Ed we are preaching to deaf ears?? ;D.....more chance of the pope singing Hip-hop
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Post by oldtimeracer on Dec 10, 2008 15:05:15 GMT
Yes but Les was it not you in a not too distant thread that was talking about spending hours testing brushless motors?
Now it seems everyone is playing with different timings on them plus changing rotors?
It seems that apart from skimming them they are getting as bad as brushed motors?
I for one was expecting this but not looking forward to it. Once again you have to spend time fiddling with motors to be competitive. So much for the fit and forget scenario. Ho Hum, been there done that not going there again.
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Post by lesbaldry on Dec 10, 2008 16:26:40 GMT
Oh no dooom and glooom..dont be Petes allie Ian...Ill never hear the end of it The dyno testing was only to compare 17.5s out of curiosity to find out why two equally powered motors had differing performance with the same FDR..It was raining that Sunday too,and we were bored As for timing...If you advance slightly you may gain a bit more top end but you will loose torque,takes seconds to do,just as easy as changing brush springs to alter torque/rpm Any way you were the first and only one at the moment to swap rotors...quite a few weeks ago too
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Post by oldtimeracer on Dec 10, 2008 17:03:01 GMT
This is true Les. I have still to notice any difference as well!
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Post by yellowshark on Dec 10, 2008 21:01:17 GMT
aye, if your not skimming and rebrushing every round, your not pushing em hard enough... Having witnessed the guys at the nationals doing this (well actually having 3 motors, all ready to go with new brushes etc, then rotating through them) there's a certain appeal for not doing it. And don't forget... you'll remove less material from a comm if you skim more regularly, as it burns less Interesting Ed, that's not my experience; I am not saying its wrong, just not my view. For competitions, ie RRC upwards we arrive at track with 4 prepped motors; practice, qualifying, finals, spare. I find that the motor performs better on the 2nd run. OK you could could say I am not running it in on the bench properly. For me thats kind of irrelevant because that is the way it is.
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Post by yellowshark on Dec 10, 2008 21:04:32 GMT
Oh no dooom and glooom..dont be Petes allie Ian...Ill never hear the end of it The dyno testing was only to compare 17.5s out of curiosity to find out why two equally powered motors had differing performance with the same FDR..It was raining that Sunday too,and we were bored As for timing...If you advance slightly you may gain a bit more top end but you will loose torque,takes seconds to do,just as easy as changing brush springs to alter torque/rpm Any way you were the first and only one at the moment to swap rotors...quite a few weeks ago too Funny you should say that Les ;D Don't worry I'll make it slow and relativley painless
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Post by TryHard on Dec 10, 2008 21:06:38 GMT
Fair enough Pete, but the guys I was pitting with that year finished 1 and 2nd in the 19t national champs, and were running BRM motors all year with Glynn Ward doing the motor prep... And they weren't the only ones doing it...
The motors were very fast, it's true, but were tuned to within an inch of their lifes, and required skimming & brushing each run...
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Post by yellowshark on Dec 10, 2008 22:26:15 GMT
Fair enough Pete, but the guys I was pitting with that year finished 1 and 2nd in the 19t national champs, and were running BRM motors all year with Glynn Ward doing the motor prep... And they weren't the only ones doing it... The motors were very fast, it's true, but were tuned to within an inch of their lifes, and required skimming & brushing each run... Would there be a difference between 19T and 27T Ed maybe? Certainly mine are tuned to within a foot of their lives so that probably makes a difference too I guess
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