what is the max amp i can run in this thing? and or c rate?

If you are talking about batteries, you can run as much as you like, minimum I would run is 150. The motor draws the amps from the batteries and will only take what it needs. If yu have a 200 amp battery, and your motor needs 150, it will only use 150. You will not fry your esc by having too many amps.</p>

ok next question how many amps does a castle 1717 1580kv need?

It needs 120, BUT I use a battery with at least 150 to be safe with my 2200kv. (120 also) i.e. 5000mah 30c lipo.

ok but isnt 30c 150 amps? correct me if im wrong but isnt the equation (Continuous current = C rating * capacity (mAh) /1000 = Amps , which in 30c case be 150? im new to this and just took it from another post i had up.

Yes, sorry not worded right. Thats what I use / would reomend as a minimum.

question, what happens if i run under 125 amps? like 100 or less? anythign bad?

Ya. Not good. Your lipo will get very hot, puff, and ruin your battery. It also might catch fire/possibly explode. You realy don't want to skimp on the amount of amps your battery puts out.

ok cool just checking, guess ill order up some batts the lol, does anyone run max amp batteries? or is it worth going with hobby king to save a pile of money?

Hobbyking all the way IMO. IMO the $20 lipos will outlast the $150-$200 lipo. There are many many thoughts on this, but from what I hear, the max amps (ever heard Max craps before?) will not last as long as the HK batts. And you can get almost 5 HK batts for the price of one max amps. 

This is my opinion.

oh ok cool, i was looking at a 4s 40c setup and those are 65ish, someone told me to buy two 2s batteries but my charger can only do one at a time, and im not the one to wait around for 2 batts to charge for one run lol

that is just wrong ... i run highend and hobbyking lipo's is" zippy - flightmax the HK battery's are good but no where near a highend lipo ... i have thunderpwer 5200Mah 4s 50/100c lipo's with over 3000 cycles on them and they still run great .. the HK battery's usually don't make 500 cycles

What do you think about Max Amps?I guess I've just heard too manybad storiesthan good stories to buy a $150Max Amps battery, when I can get 5 at HK.

That being said, I would (If I start racing seriously) try a Thunderpower lipo. I have heard good things about those.

Not looking to start something, butI would like to hearyour take on Max Amps.

Thanks

my batts are only for bashing , riding on my traCK, and light lhs racing. if i decide to go do the local series next year i might invest in a reedy hardcase,

maxamp are good quality but they are real proud of them LOL

Ya, I know right? lol Have you seen the new 2s 6500mah 150c lipo? 975 amps of hair raising power!! And they were the ones to say that there is no actual way to measure the c rating...

OP, If you are bashing and light racing, I would go with the HK batts and get 2 or 3.

ya i ordered up 2 4s 5000 mah 40c turnigys, ive had flightmax for my revo and they work good to but figured id try turnigy