Complete custom, build thread.

[Nasphere]

Great job you guys.....

I shouldn't even show my face in here today. I'm not done with mine, not even close.
So sorry......Shamefull, I know. It pisses me off, really.

haha no worries, you're not alone! Hah, I can't come up with spindles and i don't have paint for the body...

Here's some flop pics.


Features:
1 amp brushless motor. 2500 rpms no load at the rear wheels.
3 amp brushless speed controller
integrated lipo charger (just add 5V)
3g servo
carbon fiber axle spinning on ball bearings.
wood frame (light and easy to work with)
very poor job on the vacuuform of a hot wheels 240Z. (I used a lighter and handvac lol)

in the order that is STILL not shipped:
micro thin 2.4ghz reciever (would sit on top of the servo under hood)
50mAh lipo (sits right under the roof)

Also ditto on doing a good job! I love seeing this forum work! You guys are great!

Aight, I started doing cad models of how I'm gonna do the front end. This is what I came up with.

[sidewinder]

Looks great, have you tried sourcing the spindles from a Super Slicks car? They should hold up well and finding a set around here shouldn't be too hard, I'm sure someone still has a few trashed SS builds just sitting around in a box somewhere.

[Nasphere]

I have no idea what a superslicks hub even looks like post a pic if you can



I for some reason failed on my math to figure out the top speed of my car even after I finished the gearbox...

Here's the math:
30800 rpm motor speed
gear ratios 12:1 give 2500rpm on the rear axle
12.5mm tire diameter is roughly 40mm per rotation

40mm * 2500rpm
100,000mm/min * 60 minutes
6,000,000mm/hr / 25.4mm/inch
236,220in/hr / 12in/ft
19,685ft/hr / 5280ft/mi
3.7mph

Looks like I need to change the entire gearbox... I'd be happy with about 20mph top speed because a 4W motor would probably still have enough power to spin the wheels anywhere up to that point..

[sidewinder]

I wish I could, but I don't have any here...if no one else gets a picture up I'll try to get home next weekend and take a few pictures. Basically it's a little bigger and beefier zip zaps front end.

[tyhodge07]

what or where could i get that motor and esc from?

[Nasphere]

what or where could i get that motor and esc from?

Here's the brushless motor
http://www.hobbycity.com/hobbycity/stor ... oduct=7230

And the ESC
http://www.hobbycity.com/hobbycity/stor ... oduct=7184

[tyhodge07]

cool, thanks.. it would be cool to squeeze this into one of these terrain titans, lol..

[leftcoastminis]

this is a cool project, does that ESC have reverse? I read over the site info a couple times and couldnt find that info...

[Nasphere]

no reverse

[sidewinder]

I was just looking at the thread again and it hit me there's no receiver...so,any ideas on what you're going to use as a receiver? It's going to need a lipo cut off...do any of the micro boards have one?

[Nasphere]

I was just looking at the thread again and it hit me there's no receiver...so,any ideas on what you're going to use as a receiver? It's going to need a lipo cut off...do any of the micro boards have one?

Well I think the radio system would suddenly stop working when it hits a certain voltage, but incase it doesn't, they claim the ESC has cell protection...

ESC features.
High speed MCU. Fast resolution for snappy throttle response and excellent low speed timing.
Cell Protection, signal lost failsafe.
Smooth startup.
Linear Throttle
Supports 240,000RPM (2 poles) / 40,000RPM(12 poles)

Here's the RX I ordered, which is still held up by the carburetor that's on backorder from 10th oct.
http://www.hobbycity.com/hobbycity/stor ... eiver,_Air

RX features
Voltage Range:3.5V-9.6V

[redrustbucket]

Cool. Really like that brushless motor. You should be able to notice the voltage drop through the cars performance or lack thereof. I kept an eye on mine with a voltmeter in the beginning until I was comfortable recognizing the signs of low voltage. Yours will probably be even easier to recognize as it's not a crawler.

[reaper]

very very cool project man
the only thing im not feeling is the servo just way to big for this build , i have seen in the rc aero world some tiny metal cased ones that would be perfect for you . sorry i dont have a pic or even a link but they use them on the slow fly indoor type of thing
for a li-po how a bout the new ones from a dnano they are tiny and run 3.7v @1300mah loads of playing time

[Nasphere]

The servo is huge, but for $4 I wasn't complaining..

The metal cased servos you're thinking of were called cirrus micro joule servos. I had a set of em a couple years ago, but the coupler that goes from the feedback pot to the output shaft broke on both servos, so I returned em. Also they had no torque...

The perfect servos for the project are made by Horizon Hobbies and sold by Hobby King.
http://www.hobbyking.com/hobbycity/stor ... duct=10416

Also the wood is getting tossed out, I'm redoing the gearbox and everything with fiberglass boards.

[reaper]

how much torque do you need surely they have more than the magnets on a gen1 zip

the servo you linked to iv have seen on ebay under "1.5g servo" if that helps

£3.68 GBP for 2
\/
http://cgi.ebay.co.uk/2-X-RC-Timer-1-5g ... 1c0d6e1f3a