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bopper
Post #2136

QUOTE (incubus @ Jul 19 2010, 01:49 PM) *
one thing is for sure.... it's going to be stupid fast if you can maintain traction with it.

the problem with running a micro switch is that there is instant power which makes it harder to get the power to the ground.
it is also a good thing but finding the balance will take a shit load of runs.

the wow carpark would make a good test track due to the fine layer of dust making traction harder to get



Stupid fast is the idea what I was looking at is a duel stage microswitch system where first stage is say 6V and the 2nd stage is 11v kind of a crude 2 stage trorrle system they use in super gas drag racing.

Ill make up a heap of traction compound and spray a section of the carpark see if that helps.

one question though from a novis that dosnt know anything with the 11.1 V lipo batteries will that damage the motor or is it just like the more voltage you add the better it will go and realy it will only be on for 2 or 3 seconds im just unsure weather I should go with 7v or 11v LiPo batteries I dont want to cook motors all the time.

incubus
Post #2137

it's mainly your receiver and servos that will be affected by the voltage. you can get around it by running an external BEC.

there's guys in qld running 22.2v on their motors but brush life is very short

bopper
Post #2138

Brushes I can deal with they are cheep and easy to replace

incubus
Post #2139

sometimes.

incubus
Post #2140

http://204.186.93.64/

incubus
Post #2141

what steering servo are you using in the sc10 dean ?

toyrota
Post #2142

QUOTE (incubus @ Jul 19 2010, 12:17 AM) *
that's and idea..... lake alexander ???

truck will have to wait a couple of weeks :dunno:


Thats ok you have got a couple of weeks till racing next :P

incubus
Post #2143

will be at least a month before i'm ready. might have to crash yours :P

toyrota
Post #2144

QUOTE (incubus @ Jul 19 2010, 07:39 PM) *
what steering servo are you using in the sc10 dean ?


Using a savox survo from tony's

incubus
Post #2145

you reckon the caster one will be strong enough for truck racing ?

you mob like to turn it into a demo derby at the first corner

toyrota
Post #2146

QUOTE (bopper @ Jul 19 2010, 02:22 PM) *
Brushes I can deal with they are cheep and easy to replace


Just save the cash and get one off these

There is a 7700kv combo system and on a 7.4v ,2 cell lipo will do 57,000rpm about a 5.5 turn brushed motor 2 cell max
And a 9000kv combo and on 7.4v ,2 cell will do 66,600rpm and is equivelent to a 2.5 to 3.turn brushed motor 2 cell max
The ESC are fully programable on all aspects on, ON power curve, timing, braking, lipo battery cut off and selection on voltage
Power curve setting very good for adjusting for traction and would be very handy for this type of racing.

https://www.ssl-stormerhobbies.com/cgi-bin/...&pn=CCM6605

toyrota
Post #2147

QUOTE (incubus @ Jul 19 2010, 09:36 PM) *
you reckon the caster one will be strong enough for truck racing ?

you mob like to turn it into a demo derby at the first corner


A good metal geard 9 to 12kg one would be fine that's what most people are running

incubus
Post #2148

if you call past tony's tomorrow can you find out how much his yeah racing light kit is

toyrota
Post #2149

Did he still have one there

incubus
Post #2150

yeah. saw it in the cabinet on friday night. going to mount it in the s15 shell if it's cheap enough

incubus
Post #2151

when the s15 and f-150 are done i might do another s13


super pig

toyrota
Post #2152

QUOTE (incubus @ Jul 19 2010, 10:10 PM) *
yeah. saw it in the cabinet on friday night. going to mount it in the s15 shell if it's cheap enough


No worries will do, i may take the truck for a test lap tomorrow to test the 5.5t 6000kv motor either in the morning or late arvo.

bopper
Post #2153

Another question I am getting confused with LiPo batteries the voltage I can understand but what is all the mah and C ratings on the batteries obviously for a drag car I would want the smallest 3 cell I can get but what rating do I need I dont want to run out of current

incubus
Post #2154

mah is the capacity an the c rating is amps.

3 cells are 11.1v
5000mah is heaps and also heavy

for drag you'd be best off looking for something like a 40 - 50 C battery. something else to factor in is the burst C rating.
given the fact that the battery is only powering the motor for up to 3 seconds you can get away with a low mah pack which will keep the weight down.

something like this will work well
http://cgi.ebay.com.au/4xRC-Battery-3000mA...=item2308ab6bae

it's be a good idea to to make some sort of protective covering for the battery if it is a soft skin pack you use because this can happen


if it gets damaged.

you'll also need and low voltage cut off too if you're not running a brushless motor and esc

bopper
Post #2155

If anyone pick axes my lipos ill pick acxe them :mamoru:

But yes I think ill put it in a hard case just to be on the safe side just depends on the weight the car needs to be 1200 grams that is the min weight according to the Qld rules and its all adding up real quick.

I just picked up 2 2200mAh 40C (55C burst) 11.1v LiPo batteries from the US for $60aud ill be stuffed if I am going to buy anything from here its half the price on the net with the dollar the way it is.

incubus
Post #2156

HK is cheaper again. toyrota is the man when it comes to finding cheap batteries on the net

bardynt
Post #2157

Hi

hey im looking into getting back into rc cars is there any on road cards i know about off roads cars is there also a onroad club.


Having look might get into both but not quite sure at this stage

incubus
Post #2158

sure is mate.

on road racing will be at 27 bishop street on friday night night from about 7.
if no one bothers to turn up i'll have the rack all to myself :mamoru:

a few of us drift at the WOW sight and sound carpark on thursday nights from 9pm - we get sick of it and go home (late)

incubus
Post #2159

so who's going tonight and who's going to be a bitch and stay home ?

unreal
Post #2160

i went last week

incubus
Post #2161

your point ??

:mamoru:

vh-holden
Post #2162

i'll be there. unless i discover any broken bits on the car. in which case, i'll apply more zipties and be there anyway.

chris, i sent you a sms, but in case it didn't go through, can you bring the 11v. i've got an adaptor for it.

incubus
Post #2163

just checked my phone.

will do

bopper
Post #2164

I think ill come for a yarn and watch

toyrota
Post #2165

Sure i might as well

bardynt
Post #2166

Hi

cool so someone will be there on friday i went to check it out a couple of weeks ago and no one was there so 27 bishop st do you run in the empty car park there ?

toyrota
Post #2167

Yes run in the empty car park out front of the shead at the end. Position, the buisness is called

bardynt
Post #2168

QUOTE (toyrota @ Jul 23 2010, 01:28 AM) *
Yes run in the empty car park out front of the shead at the end. Position, the buisness is called



Hi

cool do you set up some cones or something to make a course so its on this fri night ?

bardynt
Post #2169

QUOTE (bardynt @ Jul 23 2010, 02:24 PM) *
Hi

cool do you set up some cones or something to make a course so its on this fri night ?
incubus
Post #2170

the track layout is done with big arse marine ropes.
we are racing tonight from about 7 onwards

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