Ramp help

[Tim566]

Our robot is having problems getting up the ramp (backwards unable to pull itself up the ramp and forwards tipping over) so if anyone would be able to provide a quick effective solution it would be greatly appreciated or even just brainstorms
<edit> quick responses are appreciated since our last day of comp is tomorrow</edit>

Thank you from me and i am sure the rest of the team

[Tomasz Bania]

Originally Posted by Tim566

Our robot is having problems getting up the ramp (backwards unable to pull itself up the ramp and forwards tipping over) so if anyone would be able to provide a quick effective solution it would be greatly appreciated or even just brainstorms

Thank you from me and i am sure the rest of the team

If you could, balance the weight more efficiently.

Tomasz Bania

[Starke]

if the problem is traction i would suggest putting on the innovation first tread to gain some extra pull. you could also gear down your wheels by putting on a bigger size of gear on the actual wheels. you would loose a little speed but gain the torque needed. if you have the weight and some wheels, omni-wheels may or may not help. they could pull up the ramp depending on the situation. does that help at all?

[Tim566]

thank you very much for your speedy responses but traction is not an issue and as for redistributing weight we don't have much to work with. so any other ideas?

[Starke]

last year i recall 340 actual making a quick battery hoder and riveting it on in a differnt place to shift our weight. it worked great. the moving around of 13 pounds works good. another idea is if you have a compressor, try and find a place to put it were you need the weight. there is 20ish shifted pounds right there. i hope that this helps.

[Uberbots]

well, you cant do much else but redistribute your weight. Without a low center of gravity, you cannot get up the ramp.

unless, though, you have some weird robot that requires a special routine in order to climb the ramp. in that case i would talk to your programmer to develop that routine.

I wish i could help you more man, but without your robot in my view thats kinda hard to do.

--ss32

(sorry read my next post... i dont think i read your description of the problem clearly enough )

[Tim566]

Originally Posted by Starke340

last year i recall 340 actual making a quick battery hoder and riveting it on in a differnt place to shift our weight. it worked great. the moving around of 13 pounds works good. another idea is if you have a compressor, try and find a place to put it were you need the weight. there is 20ish shifted pounds right there. i hope that this helps.

hmm... that would be a great idea but i am not sure if our robot design would allow that... but thank you anyway. so anyone have the miracle idea to help us get up the ramp? (our motors should have enough power to push us up)

[Liz Smith]

Maye just try to get a little momentum by starting further back, if you're not doing that already.

[Starke]

thats alright. im not giving up yet . it sounds like you have 4 wheel drive. if this is the case, make it 6 wheel drive. this will enable you rear 2 wheels to act as a wheelie bar. thats all i can think of for now.

[Uberbots]

Oh wait, it is simply unable to pull itself up the ramp? well ok then.

What you need to do (well what we did anyway) is approach the ramp slowly, but then GUN the motors as soon as youhit the ramp. That way, you shouldnt flip like you would if you rammed the ramp. Im not sure if this method will work for your robot, but its worth a try right?

[Tim566]

we tried that it actually led to slight tread damage and our wheels bounced off the ramp so it was unsuccessful but keep feeding me idea I appreciate the responses thank you everyone and keep 'em coming.

[Starke]

how far up the ramp do you make it before you flip?

[Uberbots]

Originally Posted by Tim566

we tried that it actually led to slight tread damage and our wheels bounced off the ramp so it was unsuccessful but keep feeding me idea I appreciate the responses thank you everyone and keep 'em coming.

OH so you have a tread system... thats new.

Well then, what i would sugest is work a strategy out with your alliance. tell them that you need help with the ramp, and if the time doesnt allow then you could help push them up.

without some design modifications, im sorry but you just cant get up that ramp.

[Mr. Freeman]

1. Move battery to front of bot.
2. Move ?????? to front of bot
3. Post picture of robot to increase helpfulness of responses.
4. Attach bars that slide out so that they hit the ground when you climb up the ramp, like a wheelie bar. Perhaps have some sort of ratchet mechanism so they don't then slide back in when going up the ramp.

[mehul]

im not an engineer or something but in our robot, it was difficult to go up to, but some how during the match we diecided to have our shooter wheel on top speed rotating towards the ramp creating somekind of a momentum towards the actual ramp and the robot acctually climbed up, it will take few tried before u perfect it.