SMA Night Racing
02-12-2008, 03:48 PM
#2003
No racing last nite. The court had a few deep pudles of water on it.
Im using a 3.5 brushless in my 008. Just had to go up 8 teeth on the pinon as i had it geared WAY to low. Something like a 18mm rollout instead of 23mm. I would suggest starting with that, go to gearchart.com and see what pinon you need. tire diameter is 63mm
P.S 3.5 5 cell is WICKED fast
Im using a 3.5 brushless in my 008. Just had to go up 8 teeth on the pinon as i had it geared WAY to low. Something like a 18mm rollout instead of 23mm. I would suggest starting with that, go to gearchart.com and see what pinon you need. tire diameter is 63mm
P.S 3.5 5 cell is WICKED fast
02-13-2008, 12:55 AM
#2005
You've upgraded already, Craig? You subscribe to my philosophy then: too much is never enough!
I've been running 19mm; did at Lithgow also. Not as much speed as you on the straight as I recall, but still more than adequate, and no issues with runtime with crap batteries and thermalling (which I was getting every run at Illawarra, although I now realise the fan on my speedy was on its way out)... I had about the same top speed as a bunch of the mod guys, so i wasn't alone in being conservative with the gearing. Infield speed was excellent.
There's no way of stretching the 3.5's legs at tempe, so I prefer to have maximum infield punch. I'm running the shortest gearing I can fit in the cyclone. Even with short gearing it doesn't top out on our small straight...
I've been running 19mm; did at Lithgow also. Not as much speed as you on the straight as I recall, but still more than adequate, and no issues with runtime with crap batteries and thermalling (which I was getting every run at Illawarra, although I now realise the fan on my speedy was on its way out)... I had about the same top speed as a bunch of the mod guys, so i wasn't alone in being conservative with the gearing. Infield speed was excellent.
There's no way of stretching the 3.5's legs at tempe, so I prefer to have maximum infield punch. I'm running the shortest gearing I can fit in the cyclone. Even with short gearing it doesn't top out on our small straight...
02-13-2008, 01:22 AM
#2006
Im pretty sure 19mm is too low for an orion's optimal gearing. You would probably run 19mm for 6 cells although that would probably be on the tall side anyway. Are you sure the top mod drivers were running that low a rollout at lithgow.
The track itself adds about 2-3mm to your optimal rollout straight up, and it would also explain why you had so much pickup off the line.
Gearing for 5 cell is also higher than 6 cell usually starting at around 2-3 teeth higher.
The track itself adds about 2-3mm to your optimal rollout straight up, and it would also explain why you had so much pickup off the line.
Gearing for 5 cell is also higher than 6 cell usually starting at around 2-3 teeth higher.
02-13-2008, 01:40 AM
#2007
Mine's a Novak, although it's probably too low for that also. Mainly I was trying to: a. make runtime with crappy old packs, b. not thermal as I had been at Illawarra, and c. not go too fast! (My 19t times were faster in every run than mod, so the slower the better really...)
The top three mod at lithgow were nowhere to be seen for me, and I know Craig was faster in a straight line. But a bunch of the others were about my speed, as we ran together down the straight.
What do you mean the track adds 2-3mm? And why do you gear up for 5 cell?
The top three mod at lithgow were nowhere to be seen for me, and I know Craig was faster in a straight line. But a bunch of the others were about my speed, as we ran together down the straight.
What do you mean the track adds 2-3mm? And why do you gear up for 5 cell?
Last edited by NickM; 02-13-2008 at 01:41 AM. Reason: forgot thermal
02-13-2008, 02:17 AM
#2008
$$$
I'm also selling the xray if anyone wants it, thinking of joining team s-s-s-serpent
02-13-2008, 02:18 AM
#2009
Most i think adam was running a 4.5 too, not sure what dave had under the hood, mine had the crappy tekin so you shoulda been faster than me too.....
Big track means big rollout. Im sure you werent running the usual 28-29mm rollout on your 19T motor. Either that or you wouldve been seriously slow.
Because you do.... do you think less voltage on the motor would make it run just as hard. To me less voltage means less work on the motor so why not gear up accordingly. It works for me but if you prefer to leave the gearing the same that is your choice.... **SHRUG**
02-13-2008, 03:45 AM
#2010
Craig grab the new Xray, i can vouch for it. The car is amazing (good enough to beat ya all on Tuesday nites 
)
If ya need a discharge tray i believe you can not go past the Much More Unit. Does a 30 amp pulse discharge and looks after ya cells perfectly for you. A bit pricey but worth it.
Try to aim for a roll out for smaller tracks (single court Tempe) of about 21 - 22mm, for bigger tracks (Lithgow) 23mm and for Moorebank i would say 2.5 and 21mm.
Martin, i changed the gearing today at work (from 16mm to 23mm) and OMG it was so much better. Amazing power out of the thing. Still had insane punch, but i was driving on the street outside work, sitting next to cars doing 60km/h, keeping up with them at 1/3 throttle. Mash the throttle and it just left them for dead. As a guess getting up to 80 - 90kmh... 23mm would be for bigger style tracks, gonna drop it down to 21 for Tempe, older single court Tempe im thinking 20mm. for Fairy Meadow im gonna try 21-22 see what it does
)If ya need a discharge tray i believe you can not go past the Much More Unit. Does a 30 amp pulse discharge and looks after ya cells perfectly for you. A bit pricey but worth it.
Try to aim for a roll out for smaller tracks (single court Tempe) of about 21 - 22mm, for bigger tracks (Lithgow) 23mm and for Moorebank i would say 2.5 and 21mm.
Martin, i changed the gearing today at work (from 16mm to 23mm) and OMG it was so much better. Amazing power out of the thing. Still had insane punch, but i was driving on the street outside work, sitting next to cars doing 60km/h, keeping up with them at 1/3 throttle. Mash the throttle and it just left them for dead. As a guess getting up to 80 - 90kmh... 23mm would be for bigger style tracks, gonna drop it down to 21 for Tempe, older single court Tempe im thinking 20mm. for Fairy Meadow im gonna try 21-22 see what it does