Quote:
Originally Posted by pugboy
One thing I am a little unsure of is why the electric board motor list needs to exist and perhaps a broader range of motors could be permitted.
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It exists because several (not just off road!) electric classes want it.
The 1/5th bike class didn't use a list until one worlds when the 27T class was won using a seriously quick motor specially hand built for the event and unavailable to other competitors. It had 27 turns of wire, but broke every other ROAR and BRCA rule.
It's there for several reasons.
1. Touring cars and 1/12th scale run several classes based on the motor specification, so everyone runs identical motors in each class. The electric board ensures that, for example, all approved 10.5T motors are what they say they are and that they meet the rules to ensure that the 10.5 class has a range of motors that are roughly equal in performance. If the motors weren't on the EB list, who's to say that one manufacturers very fast '10.5' isn't really a 9.5 with a 10.5 label.
2. As approvals for the electric board list must be submitted by the UK distributor, it ensures all the motors on the list have someone in the UK to deal with any problems, it also guarantees the motor will be available to buy through most hobby shops in the UK.
It means if someone finds a motor that revs higher with more torque than the rest, but it's only made by hand in Romania, it can't be used as no one else can get hold of them.
3. The electric board rules includes a detailed specification of the motor, including for example the type of connector for the sensor so we can just buy replacement motors without having to buy a new ESC to go with it as they all use the same connector. It also includes can and rotor dimensions, again to ensure all motor have similar performance and that they will all fit in every car on the market. It prevents for example someone bringing out a motor 10mm shorter than the rest that has less torque but more speed, if it works then everyone would have to buy that particular motor to keep up.
If there's no one to approve the motors, everyone's motors would have to be dismantled and measured to check they comply.
BTW Regarding your cm36, even if there wasn't the EB list it would never be approved for racing. It doesn't meet the dimensions in the BRCA handbook as it isn't actually 540 size.
4. The electric board rules also mean there's a maximum price limit on the motors on the approved list. Obvious reasons here, with no approval list there's nothing to prevent manufacturers developing motors with
£150-200 price tags.
If after all that you still don't think 1/10th off road needs the EB list then next year propose that the list isn't used. Any rule changes to be discussed this year had to be submitted 6 weeks ago.
BTW in case anyone hasn't seen them the proposals are here
http://www.brca.org/Sections/off_e_1...20Fnl._doc.doc