brushed or brushless stock
02-08-2008, 04:43 AM
#1
brushed or brushless stock
brushed or brushless stock , what will be the go , and what will faster
02-08-2008, 05:32 AM
#2
For super stock (19t) 10.5 or 13.5 bl may be the options, i guess will will have to see what happens locally with AARCMCC.
02-08-2008, 01:59 PM
#4
Tech Master
iTrader: (22)
17.5
Stock is 27br or 17.5bl so far all are using 27 but I think that will change slowly. (Some of the blokes are talking bl already). S/Stock is 13.5 as no one here has a 19br but plenty of 13.5's.
There is about a 2-3 lap difference between the best drivers (equal ability) in the 2 stock classes. 5 minute races 17/18laps/stock, 20 laps s/stock.
If you read enough forums 27 usually, but not always, has a slight advantage. It seems that the track itself has a lot to do with it.
We followed roar rules as after a season of testing 13.5 was way quicker on our track and we also have a fair few beginners so it suited us to split the class.
02-09-2008, 02:50 AM
#6
Our club has decided to follow roar rules on motors. These rules were set with the assistance of most if not all of the bl manufs.
Stock is 27br or 17.5bl so far all are using 27 but I think that will change slowly. (Some of the blokes are talking bl already). S/Stock is 13.5 as no one here has a 19br but plenty of 13.5's.
There is about a 2-3 lap difference between the best drivers (equal ability) in the 2 stock classes. 5 minute races 17/18laps/stock, 20 laps s/stock.
If you read enough forums 27 usually, but not always, has a slight advantage. It seems that the track itself has a lot to do with it.
We followed roar rules as after a season of testing 13.5 was way quicker on our track and we also have a fair few beginners so it suited us to split the class.
Stock is 27br or 17.5bl so far all are using 27 but I think that will change slowly. (Some of the blokes are talking bl already). S/Stock is 13.5 as no one here has a 19br but plenty of 13.5's.
There is about a 2-3 lap difference between the best drivers (equal ability) in the 2 stock classes. 5 minute races 17/18laps/stock, 20 laps s/stock.
If you read enough forums 27 usually, but not always, has a slight advantage. It seems that the track itself has a lot to do with it.
We followed roar rules as after a season of testing 13.5 was way quicker on our track and we also have a fair few beginners so it suited us to split the class.
Have you tried to test the motors yet?
Fact is 13.5 is not equivalent to a 27T brushed, the 17.5 looks a better alternative. We'll see what happens as they start to appear. I have been running 19T vs 10.5 for over 6 months now and they are very even. 10.5 has better initial torque but the 19T brushed has better top end. Now that I have just bought a 10.5 I will get a good idea of the difference. At this stage it would be my preference to have 10.5 as the middle class.
We are looking into some dyno / rev testers that are going to become available shortly to test B/L motors. Per volt rev limits could be a good way of specifying, limiting and scrutineering B/L motors for stock and super stock.
vazzo,
I think in your case it would be as long as you can run sintered rotors...
02-10-2008, 12:04 PM
#8
I ran 3 heats and a final yesterday with the sintered 17.5 against the bonded 13.5 and 27t brushed (our usual Qld stock class) and I reckon ROAR have made the right choice. The motor is very close in performance to 27t brushed - just as the 13.5 bonded was but comes off the track after 5 mins a lot cooler.
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