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Sydney Model Autosports Inc [smaracing.org]

Old 08-27-2008, 04:10 PM
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Originally Posted by auzzy_mate
The internal ratio for a TRF416 is 2.055
since we're being maths nerds, I might point out that the ratio is actually 2.0556. The pinions are the same but this changes the spurs

Stating from known PINION
42 * 1.702665888 = 72
or
40 * 1.702665888 = 68
or
38 * 1.702665888 = 65

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Old 08-27-2008, 04:33 PM
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Default brushed vs brushless

hi guys, what's the ratio between turns of brushed and brushless motor? I thought that 1 turn brushed = 1 turn brushles but I'm looking ar Novak ad that says '... 10.5 brushless system with performance similar to 19 turn brushed motor' then '8.5 = 15-17' ? So when you say that stock is 17.5 motor, is it brushed or brushless? I can't really find that many 17.5 brushless motors.
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Old 08-27-2008, 05:28 PM
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Originally Posted by rcmarek
hi guys, what's the ratio between turns of brushed and brushless motor? I thought that 1 turn brushed = 1 turn brushles but I'm looking ar Novak ad that says '... 10.5 brushless system with performance similar to 19 turn brushed motor' then '8.5 = 15-17' ? So when you say that stock is 17.5 motor, is it brushed or brushless? I can't really find that many 17.5 brushless motors.
A 10.5 brushless is equivalent to a brushed 19 turn (Super Stock Class)
A 17.5 brushless is equivalent to a brushed 27 turn stock motor (Stock Class)

540 class uses a 27 turn motor (silver can), but its perfomance is less that of a 27 turn stock motor.

If you are thinking of putting a 27 turn stock motor or 17.5 brushless in your TT01, it may not be a good idea. The TT01's are not really designed for those motors. The motors in Stock racing have a significantly higher amount of torque and performance and you will end up breaking your gearboxes and driveline.

Last edited by Andrew Barr; 08-27-2008 at 05:43 PM.
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Old 08-27-2008, 05:38 PM
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whilst we are on Maths
ths probably is more of a question that would be asked more often

Keg= 50Lt
schooner 425ml= 117 schooners per Keg
Midi 285ml = 175 midis per keg

now isnt that more important that all that spur and pinion stuff
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Old 08-27-2008, 05:46 PM
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Originally Posted by chrisk
whilst we are on Maths
ths probably is more of a question that would be asked more often

Keg= 50Lt
schooner 425ml= 117 schooners per Keg
Midi 285ml = 175 midis per keg

now isnt that more important that all that spur and pinion stuff

More important is that a Jim Beam and Cola is $6 at the Jets Sports Club and to Andrew Miller's dissappointment, they don't sell "Mudslides".
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Old 08-27-2008, 05:49 PM
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yet another question what personal transponders do you use and where do you buy them?
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Old 08-27-2008, 06:04 PM
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Originally Posted by rcmarek
yet another question what personal transponders do you use and where do you buy them?
They are AMB RC Personal Transponder.

Give Pat a ring a RC Hobby Hanger.
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Old 08-27-2008, 07:33 PM
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Pricey little buggers too. A while back moorebank organised a bulk deal for its members and I picked one up pretty cheaply, it might be something to think about if enough people want them. I need 2 more, but need servos for the new ride more
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Old 08-27-2008, 08:23 PM
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Originally Posted by chrisk
whilst we are on Maths
ths probably is more of a question that would be asked more often

Keg= 50Lt
schooner 425ml= 117 schooners per Keg
Midi 285ml = 175 midis per keg

now isnt that more important that all that spur and pinion stuff

quoted as this man speaks of things far more relevant to my SMA enjoyment
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Old 08-27-2008, 08:27 PM
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Don't foget that this Sunday is Round 3 of the Sunday Point Score Series as well as the Greg Still Cup for Nitro.

I big thanks to HEI & Northern Beaches Hobby Centre for the donation of prizes for the weekend and their continuing support to SMA.
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Old 08-27-2008, 08:32 PM
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Ari & co.. good people

whats up for grabs AB ?
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Old 08-27-2008, 09:04 PM
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Originally Posted by barts71m
cheers ben....got some maffs for ya lol....not goods at maffs and stuf...

planning to run a brushed motor for this week lol was looking at 31 or 32 pinion and 77 or 78 spur.....whats that give me...lol
If you are running the 17.5 brushless, you will need to run at 3.5 ratio. If you run 27t brushed, I ran about 6.9 on the weekend just gone.
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Old 08-27-2008, 09:07 PM
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Originally Posted by CraigM
Pricey little buggers too. A while back moorebank organised a bulk deal for its members and I picked one up pretty cheaply, it might be something to think about if enough people want them. I need 2 more, but need servos for the new ride more
Hi Craig. If you need extras, I would highly recommend getting some clones from MRT. They have a thread in the onroad forum and can be found at http://www.team-mrt.com/. I have 4 clones of the same number and they have all been faultless. The downside is that you will be without a transponder for a short while, as you need to send them your transponder to flash for the first order. They then return your original along with the clones ordered. After that they have the ID on file so you just order more when needed.
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Old 08-27-2008, 09:24 PM
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+1 wanting to know what the prizes are

Also what is the wet weather plan? Will the GSC be pushed back to the next Sunday meet?

Originally Posted by veecee
Hi Craig. If you need extras, I would highly recommend getting some clones from MRT. They have a thread in the onroad forum and can be found at http://www.team-mrt.com/. I have 4 clones of the same number and they have all been faultless. The downside is that you will be without a transponder for a short while, as you need to send them your transponder to flash for the first order. They then return your original along with the clones ordered. After that they have the ID on file so you just order more when needed.
Hey Vin yeah I've seen them before but my number is pretty crap, I was hoping for a better one on the next PT I order
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Old 08-27-2008, 10:13 PM
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Originally Posted by CraigM

Also what is the wet weather plan? Will the GSC be pushed back to the next Sunday meet?
Good question.

If the race meet is not on, it will be rescheduled to the next Sunday race meet (14/9/08).

If the event starts and the weather Gods decide to spoil the party during the day, points (for point score) will allocated based on the qualifying results from the last completed round.
To be call a completed event (Greg Still Cup), the three rounds of qualifying must be completed or two thirds A Main race completed ie 20 minute mark.
eg. If it r%#ns at the 15 minute mark, the final result will be based on the qualifying results. If it r%#ns at the 21 minute mark, the result will be based on the current track position when called by race control.

As for the prizes, you will have to wait and see
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