42" Cat build

[TotalPackage]

I will explain this, and you can choose to beleive me or not.

That motor will probably work on 36v, just not in your boat. Make sense?

The problem is the load. The faster you try to spin a prop, the more the load increases. Thats what tiq was getting at with giving you the info on his setups. I ran a 1600kv motor on 6s with a 45mm prop and it pulled about 170A. Obviously a 80A Esc wouldn't last under that load, and if you were to spin that motor on 8s you would probably be talking close to 250A-300A.

That motor is rated at 36v you say...what is the current rating? As long as you stay within the current ratings of the motor and ESC, it will indeed run on 36v. The problem is, you wont.

If were talking a 2-700 kv kb45 17xl @10 s would work quite nicely so I have to slightly disagree with KEITH coz a cat doesnt pull the amps a mono does there closer to hydros as slip is concerned so a member ran 1 kb45xl on a 646 3 blace with marginal temps and does wheelies with a 19 pound hydro: You look at it. Is this enough performance for you BLACKJACK 7? Its not 70 though. BUT FUN ALL DAY were talking 2 in your boat so lets be real. But here again a little more that a single in $ I think simply coz you have to have 2 esc's .

kb45 17xl performance here:http://www.youtube.com/watch?v=g2xfiCBaNas

Before you listen to anyone please investigate for yourself and see what will satisfy YOU!

[TotalPackage]

Heres and hk setup that might get it going
2 8xls or 2 kb 45xl motors 1600kv
2 200 amp hk esc's 29.00 a piece
your 2 5 s packs 1 each motor
two props between xseries props between 42 and 50 mm

[keithbradley]

If were talking a 2-700 kv kb45 17xl @10 s would work quite nicely so I have to slightly disagree coz a cat doesnt pull the amps a mono does there closer to hydros as slip is concerned so a member ran 1 kb45xl on a 646 3 blace with marginal temps and does wheelies with a 19 pound hydro: You look at it is this enough performance for you? It not 70 though. BUT FUN ALL DAY we talking 2 in your boat so lets be real. But here again a little more that a single in $ I think simply coz you have to have 2 esc's .

kb45 17xl performance here:http://www.youtube.com/watch?v=g2xfiCBaNas

Before you listen to anyone please investigate for yourself and see what will satisfy YOU!

Dude I honestly can't make out most of what you're saying here.
Like I said, choose to beleive it or not. I have cats too, they're not majic. I may have used a mono as example of current draw because its the closest thing I had to his setup that was logged. If I wanted to bench-race and just make stuff up I would, but I was trying to provide REAL data to make a point.
It doesnt really matter, because that log was from my 34" PIP bittburger anyway, not a mono...

[TotalPackage]

Dude I honestly can't make out most of what you're saying here.
Like I said, choose to beleive it or not. I have cats too, they're not majic. I may have used a mono as example of current draw because its the closest thing I had to his setup that was logged. If I wanted to bench-race and just make stuff up I would, but I was trying to provide REAL data to make a point.
It doesnt really matter, because that log was from my 34" PIP bittburger anyway, not a mono...

Never addressed you as dude and if you cant understand clear english so sorry for you but anyway this is what I think My friend on your boat. The debate between me and Keith is truly irrelevant you see the video for itself I didnt create it through "MAGIC" either

How do you address what you cant make out?

[Blackjack-sven]

tiqueman, if you were just more diplomatic like Totalpackage and explained in more detail like he does, I'd not only listen, but also pass on your knowledge to the next beginner.

[tiqueman]

How much more clear could I have been telling you EXACTLY what my set ups were and what they ran and what you could expect using similar ideas? You kept coming back w/ your 80A HV and I explained several times why your set up wouldnt work as it would pull too many amps.. I told you how it would pull ridiculous amps on large props and theyd have to be small like your buddys 30mm prop. What diiferent could I have done???? I was extrememly "diplomatic" about the issue. I didnt come on here as some would and call you an idiot and do nothing but bash your set up ideas that are so far off. I tried to help. YOU are the one who didnt want to hear my advice and kpt coming back w/ the same thing. It doesnt matter to me anymore, do what you wish. I hope you get it to run as youd like w/ minimal issues and minimal wasted equipment. Im sorry for trying to help.

[TotalPackage]

Please yall every newb goes through stuff on here can we welcome people with positivity please? To be honest this is steves forum none of us own it.


Not directed to anyone in particular just remeinding everyone this is supposed to be fun right? ITS JUST RC BOATS.

[tiqueman]

If thats regarding anything Ive said, please read my forst SEVERAL posts in this thread. I tried, but some people are too new to listen I guess as well. MOST, newbs listen and will come back w/ a why? or well, if it wont do this what will it do. Not keep coming back w/ the same unrealistic options and not listening to one bit of advise. You (total package) read my posts and tell me how I wasnt helpful or welcoming.

Some seem they just cant be helped, they will blow thier stuff up and go back to crawlers or whatever they started with.....

[TotalPackage]

Turnigy HV 80 on kb45

now that we got that clear lets move on

[TotalPackage]

Sir u didnt give me time to edit coz i knew u would think i was refering to you TM ive never said anything against u . So please read my edit which was posted before your response sir.

[keithbradley]

tiqueman, if you were just more diplomatic like Totalpackage and explained in more detail like he does, I'd not only listen, but also pass on your knowledge to the next beginner.

I gotta say dude (hope youre not offended by that.lol...I call my kid that too so its not a putdown), there are a lot of people who can be a-holes on here, but Ive never seen tiqueman be one. I didnt read the entire thread so I dont know what was said but he has always been nice, humble, and very knowledgable in the posts I have read. Im not a fanboy and I dont "pick" which members I want to back. I have no affiliation with him, dont know his real name, probably never really shared words with him on here, ect. Im just saying whatever happened I think you got the wrong impression of him.
Other people might seem more diplomatic, but it might just seem that way because they dont really have enough real world experience to tell you what is and what is not going to work. (Im speaking in general here, not about anyone specificly.) Tiqueman probably does, and he probably has more than I do as well, but I can tell you for certain that you wont be going 80mph at a 80A draw. HV is great to keep current draw down, but only if the kv is lower.

[tiqueman]

Exaclty!!! thanks for the pic TP. Doesnt get more clear than that.

[TotalPackage]

Sevn you can look at the max usable ampdraw a motor can run and rougly estimate if an esc can handle it. WE myself included sometime do stupid things like try to do it anyway and there is the result tried and true FAILURE. Look at some of the suggested setups and see what you think.

[TotalPackage]

Most of them are on youtube in video not just my suggestion which ISNT the best one its just one.

[tiqueman]

I gotta say dude (hope youre not offended by that.lol...I call my kid that too so its not a putdown), there are a lot of people who can be a-holes on here, but Ive never seen tiqueman be one. I didnt read the entire thread so I dont know what was said but he has always been nice, humble, and very knowledgable in the posts I have read. Im not a fanboy and I dont "pick" which members I want to back. I have no affiliation with him, dont know his real name, probably never really shared words with him on here, ect. Im just saying whatever happened I think you got the wrong impression of him.
Other people might seem more diplomatic, but it might just seem that way because they dont really have enough real world experience to tell you what is and what is not going to work. (Im speaking in general here, not about anyone specificly.) Tiqueman probably does, and he probably has more than I do as well, but I can tell you for certain that you wont be going 80mph at a 80A draw. HV is great to keep current draw down, but only if the kv is lower.

Thanks Keith, I appreciate the kind words. And I know you werent refering to anyone specific, but for the record, I do have experience, 16 boats, electric, not one under 40, 3 above 60, one approaching the 80 mark let alone my 25+ years experience in RC in general. Im not at all saying I know it all in the FE world, as Im sure I dont know half of it. But I do know what I have, I put hours and hours upon days, weeks and months, into research on my high performance set ups. I too had to ask questions and absorbed as much as possible before pulling the wallet out. Anyway, this isnt about me. I just thought giving info on my personal set ups would be a good example of whats happening, what amps are being pulled, esc, props etc etc to get a base of what to expect. But, as we all know, thats not diplomatic enough.