42" Cat build

[Blackjack-sven]

What do you mean by custom work? I'll be reinforcing the hull with carbon fiber and custom making a rudder.
and what if I changed the setup to 8s, 1600kv, 80hv esc? should spin 47360 rpm (17000rpm more than stock) and with an x445 should put it into the 80mph zone without much amperage to the esc

[tiqueman]

Built motor mounts, batery trays, bulkhead, transom doublers, carboned hull, servo mount, stinger mods, etc. 47k is waaay too much rpm. You need to stay under 40, really IMO under 37, and no, you will be pulling over 200A w/ that set up. I feel your waaaaaaaaaaaaaaaaay out of your league on this. We are giving you suggestions on what yo can and cant do and you keep coming back w. un-realistic set ups. Theres much to be learned, as Fluid, Siberian and Jacked have all said, its much more than just throwing a motor and an esc and a couple batteries into it. Theres a lot to calculate, a lot to learn and most of all, listining to experienced OSE members trying to guide towards good set ups and away from poor set up options. Get off the 80A HV, it in no way at all will work for what you are trying to accomplish.. I dont know how else to say it. I dont know how your figuring your amp draws? If I told you I pulled 90A on 6S, w/ a Feigao 10XL (about 1600KV) and used a 442 prop, eagle tree data logged, not guessing here, how can 8S on almost the same set up pull less amps w/ a 445????? Please, do research, read build threads, OR, set it up as to what you think its going to do, and send us pics of how bad it burned.. IF you get it back.

[DV8ion]

Can't wait to see what happens next.

[Blackjack-sven]

Whats the fastest setup you guys can put together from hobby king stuff?

Btw: the kb45 motor is rated at 36 volts. So I don't see why it couldn't handle 8s, and if I prop accordingly the esc should be fine as well. if theres a problem with that explain in detail.

[Igoreski]

Sometimes the fastest set up leads to adrenalin rush followed up by boat recovery.So read much and purchase parts after you know what will reach your goals.

[LarrysDrifter]

Do not run KB motors. They get very hot very fast and are one of the most unreliable motors you can buy.

[RandyatBBY]

Do not run KB motors. They get very hot very fast and are one of the most unreliable motors you can buy.

They will not take a big load, If you over prop to get big speeds they get hot and burn up they are capable of about 45MPH on 8S and not more. And that is only if you watch the temps and make sure the motor never gets over 130 degrees. I sold mine because I need a better motor. But my customer liked the price and understood it short comings.

[Blackjack-sven]

so what hk motors are good? and i see no one has put a setup together yet.

BTW: My goal is to hit 80 on hk equipment in a hobby king Genesis hull on a single system, not twins yet.

[Jacked1]

If you want to use the 80hv the best cheep motor in my opinion would be the T600 880kv outrunner or the H3740 910kv 600 heli motor on 10s-11s but i would think you wouldn't be able to go very far past 50mph.

[Blackjack-sven]

what motor kv, and battery combo would put me into the 80mph range?

[tiqueman]

No one has any ideas b/c it cant reliably be done. Again, your goals are a bit unrealistic w/ what you want to work with. There are several options that would put you in the 50mph range, youre not going to find 80 doing a super low budget build, especially w/ one motor. Why cant you understand this??? Everyone on here is telling you the same thing.

Buy the china stuff to go w/ your 80A HV, when you get it all, put it in your car, go to the interstate and do 80. Thats the only way its going to get there.

I think Jackeds idea is about the best and would remain reliable, that you are going to find. Outrunners are nice as well b/c they can get some serious torque behind them. They sound mean too. Id go w/ that set up and be happy w/ it until you can pour money into it and build it twin to try and reach your goal.

[TotalPackage]

take your time and get your stuff coz at least that will give you a mock up. Some of us dont know what a budget is But I do. My 1200 dollar a month house note comes before an rc boat but you can still have fun. I think you can get close to 50 with t 600's or twin kbs you might even want to look at a pair of feigao 9xl's and x645's You should definately get the t180 escs they will carry you even when u get better motors? Some of the more friendlies will help you get where you want to go. You can look at some 1717's or maybe one nice single that definately cheaper way to go. But im with you on the budget thing. Hobby king aint the only place either look on ebay too. 50 mph is FE i remember when nitros struggled to do 50. Good luck my friend.We all had to start somewhere . To be quite honest some wont say it but they started out with higher goals and less money than u so do ya thing pimpin.Need anything pm me!

[Blackjack-sven]

Thanx TotalPackage, at least someone knows how to talk on this board. Everyone else seems to think that if your not a pro by the time you get here, you should be driving a tyco toy.

What do you think can be done with what I have on order from hk?

2x 4000 5s1p batts
1x 80hv esc
1x 1600kv kb motor

I also have.........
1x 6xl feigao
2x 8xl 1 feigao 1 hk
1x proboat 1500kv

and a barrage of different batts and a few choices of props but I can just buy props as I need them.

[Howard Lee]

Its not my thing to jump and give advise but i can help you and put you at the top. You have some good guys give you advice but i like to go a different direction. I like high rpm,s but nothing from hk. If your looking to hit the 80s you need high rpm and a good setup.

[Blackjack-sven]

what are you thinking? what do you mean by a good setup?