rerock
Quarry Creeper
Years ago I built a rig for my son. He drove it about 6 times then it got packed up.
He's older now and is interested in it, so I picked up an SCX10 CRC RTR (for the lights) so we both had something to drive.
I started by tearing his tuber all apart, washed, and lubed everything. The old 4200mah nimh battery was shot, so I picked up a new one.
The old rig has an original Axial trans with a dig unit (not hooked up), an Integy 55t lathe motor, with a 12t pinion and a 90t spur. It has TLT axles, a HiTech HS645MG servo, and weighs about 10lbs. The driveshafts are modified Jato shafts with metal Traxxas joints (IIRC). Wheels are old school RC4WD beadlocks with 2.2 Swamp Dawgs. Tire rubber and foam are still perfect, so that's cool.
After it was back together, I drove it around the yard until the battery died. Everything still worked, sweet! Then I drained a battery driving the SCX10 as a comparison.
After driving that SCX10, I noticed how crappy the range was on the old rig, it was only like 12'... It definitely needs a 2.4Ghz setup, something cheap like the one that came with the SCX10.
The motor/gearing in the old rig has my "ideal" amount of torque, but needs more wheel speed and tops out at about 5-6mph.
Ideally, there is a motor/ESC/gearing combo that would allow for lots of torque, but also able to provide a little more top speed. It would be nice to be able to keep up with a stock SCX10.
All that said, here are some newbish questions:
Any economic 2ch 2.4Ghz radio recommendations or should I just pick any old cheap set?
In the little research I've done, it seems that if I were to switch to a brushless set up, I could go with higher gearing, which would increase the top end, yet still retain the same low end torque. Does that sound about right? By the sounds of it, I should look at a sensored motor to keep the crawling really smooth?
What spur & pinion do you think would be a good combo to try first?
He's older now and is interested in it, so I picked up an SCX10 CRC RTR (for the lights) so we both had something to drive.
I started by tearing his tuber all apart, washed, and lubed everything. The old 4200mah nimh battery was shot, so I picked up a new one.
The old rig has an original Axial trans with a dig unit (not hooked up), an Integy 55t lathe motor, with a 12t pinion and a 90t spur. It has TLT axles, a HiTech HS645MG servo, and weighs about 10lbs. The driveshafts are modified Jato shafts with metal Traxxas joints (IIRC). Wheels are old school RC4WD beadlocks with 2.2 Swamp Dawgs. Tire rubber and foam are still perfect, so that's cool.
After it was back together, I drove it around the yard until the battery died. Everything still worked, sweet! Then I drained a battery driving the SCX10 as a comparison.
After driving that SCX10, I noticed how crappy the range was on the old rig, it was only like 12'... It definitely needs a 2.4Ghz setup, something cheap like the one that came with the SCX10.
The motor/gearing in the old rig has my "ideal" amount of torque, but needs more wheel speed and tops out at about 5-6mph.
Ideally, there is a motor/ESC/gearing combo that would allow for lots of torque, but also able to provide a little more top speed. It would be nice to be able to keep up with a stock SCX10.
All that said, here are some newbish questions:
Any economic 2ch 2.4Ghz radio recommendations or should I just pick any old cheap set?
In the little research I've done, it seems that if I were to switch to a brushless set up, I could go with higher gearing, which would increase the top end, yet still retain the same low end torque. Does that sound about right? By the sounds of it, I should look at a sensored motor to keep the crawling really smooth?
What spur & pinion do you think would be a good combo to try first?
