hey i really need some help to make a rc tracked viechle, i want to make it very big so i think that i have everything needed to make it so if you could help me telling me if im wrong i would apreciate it
here is the list
75 MHz Signal SplitterP/N: 276-2217 $19.99 $19.99
75 MHz Transmitter & ReceiverP/N: 276-2153 $129.99 $129.99
Tank Tread KitP/N: 276-2168 $29.99 $59.98
Victor Speed Controller (5-choices)Victor Speed Controllers
2 x 12V Victor 884 + 12V Fan $179.98
P/N: VICTOR-884-12/12 $179.98 $179.98
CIM MotorP/N: 217-2000 $25.00 $50.00
Advanced Gear KitP/N: 276-2184 $19.99 $19.99
Base Plate 30x15 (2-pack)P/N: 276-1341 $29.99 $59.98
Long Aluminum Structure KitP/N: 275-1410 $99.99 $199.98
Advanced Hardware KitP/N: 275-1119 $49.99 $99.98
7.2V Robot Battery NiMH 3000mAhP/N: 276-1491 $29.99 $29.99
Smart Charger w/Optional Power CordCharger
1 x Smart Charger $16.99
P/N: 276-1445
Power Cord
1 x Power Cord - North America (Type A) $3.00
P/N: 276-1500 $19.99 $19.99
pd:im not doing this for any kind of competition im just doing this cuz i want to
thnx:D
What powers the CIMs? the Vex 7.2v battery or some other 12v FRC type bat?
How do you connect the CIM .313" output axle to the 1/8" axle Vex stuff?
How do you gear down the CIM 5000 rpm output to a reasonable speed?
The CIMs seem overpowered and not mechanically compatible with the rest of the Vex components. They are ~40x more powerful than a Vex HS motor.
I don’t see any point in the Advanced Gear kit for a CIM powered system;
what would you use it for?
High-Strength gears or HS sprockets might be a better choice
You might want Rubber inserts or something for the treads.
Do you need servo wire extensions to connect the Victors to the Signal splitter?
“Very Big” is not a size. You have spec’ed enough tread for two 27" long x 5" high treads. Do you have any type of capability requirements?
climb stairs?
Carry your backpack?
weigh more the 15lbs but less than Y?
Speed 1fps (rockcrawler) or more like 30fps (racecar)?
thnx men
i want to make it like a scale model of a ripsaw, about the size i was thinking something close 24 x 48 in.
big enough to climb stairs, transport things but small enough to go thrugh an opened door
then about the electronics i was hoping that only if you want, can, and have time, help me select the right components. thnx men
sorry for my english but im really not a good english speaker… or sumthin like that
To get 48" long by 12" high tracks, you’ll need 4x track kits, not just 2x.
Same as original questions then:
Run CIM motors from Vex 7.2v battery?
How will you connect CIM shaft to Tread sprocket, and with what reduction?
o its different i thought they were the same but as i said before i was hoping someone could help me with that and by the way i have had no previous experience with vex products so i really dont know much about that i would apreciate that you could help me with this.
Punctuation and newline aids clarity.
I’ve changed email title, but you may need to make a new thread with usefule title like this: “Need Gearbox for CIM to Vex connection”.
Here are the 2 models I’m familiar with:
FRC style with Vex CPU: Need a 12V motorcycle battery, the Victors, and then Gearboxes from BanesBots or AndyMark.biz; you’d probably need some bigger tread as well.
24"x48" foot print is getting close to FRC (First Robotics Competition) size.
Vex style: Drop the CIM and Victor combination, and go with 4 Vex 393 HS motors, (2 on each side), and use #29 Motor Controllers instead of Victors. Keep the Vex treads, etc. You may want a power expander and an additional 7.2v Battery. 24x48 is 6x normal Vex competition size
BEST Style: 24x48" is 2x size of BEST competition robots : 24x24x24"x24lbs, They use Vex controllers with #29 MC, and use DC gearhead motors with 1/4" shafts; You’ll can find some LynxMotion 8mm wheels hubs and drill them out for 1/4", and drill out some Vex HS sprockets to run the chain.
BEST style is much more plywood/PVC bodies, ie cut your own structural parts.