4 Prop Conquest build

[crabstick]

haha thats not the point though Brushless55.

Would be interesting to data log and see how many amps each motor is pulling, might be able to get away with cheaper esc's.

[Brushless55]

haha thats not the point though Brushless55.

Would be interesting to data log and see how many amps each motor is pulling, might be able to get away with cheaper esc's.

his first post was "somewhat of a budget build"

[crabstick]

probably budget as in terms of Quads

[Brushless55]

probably budget as in terms of Quads

[rearwheelin]

lol....Its my way of building a quad drive boat on a budget, eventually I want to put more powerfull motors but for budget reasons I chose the cheapest motors I could find and the least expensive, most powerfull esc's I could find
Yesterday when I ran the boat it was 90 deg F. , the asphalt temps were around 130 , I couldn't get a good reading on the grass and after my first run the esc's and caps were only 100 deg and batteries were 95 deg. My reasoning for the quad drive is from my past expieriances with my single drive (Sprint cat .40 with 1527 and HV240) , I could never keep it cool and from burning iether the motor or esc. Warranty work on those two items isn't cheap and Castle would no longer cover my esc failures because of the brand and discharge rated lipos I was using for my 8s 2p setup. Lipos needed would have run me big bank and I was ready to sink that boat and go back to a twin drive . Then the idea of quad drive appeared This is my only boat now and am 100% happy with it. Now I am not worried about burnnig stuff up, I will say some better quality motors are in order(more powerfull)

[Make-a-Wake]

bet it will do fantastic wheelies

Ozzie nailed it! That thing is insane!! Are you running the 447's? What were your motor temps?

[rearwheelin]

Congrats dude, that is truly outside the square and BAD ASS!! Ride attitude looks good.

Thank you

[rearwheelin]

Ozzie nailed it! That thing is insane!! Are you running the 447's? What were your motor temps?

Yes sir, 447's( not completly finished) . Motor temps build fast . After 3 or 4 passes they were around 135 . They seemed to build heat with no load on the bench too, I tried diffrent timming settings and am at #5 wich is 15 degrees adv.( factory set timming) .

[Make-a-Wake]

"After 3 or 4 passes they were around 135"

Hmmm, from my personal experience the china motors dont like 120+ degrees. The 447's seem a tad big in my humble opinion..........too bad you didnt get 445's...........................447's can become 445's very easily as i'm sure you know

Still just a Bad A$$ boat!!

[rearwheelin]

"After 3 or 4 passes they were around 135"

Hmmm, from my personal experience the china motors dont like 120+ degrees. The 447's seem a tad big in my humble opinion..........too bad you didnt get 445's...........................447's can become 445's very easily as i'm sure you know

Still just a Bad A$$ boat!!

They are a tad large , still like them though . I wish I was more of an expert on props, I would like the correct props eventually . After I use these on bigger motors I might have these worked on.
Here is a photo of my old twin meanmachine on 6s 2p,9t 540xls with 447s sharpened and balanced only, with throttle pinned

[Chuck E Cheese]

i think your timing is way too high. everyone has different opinions on it but i have used several feigao 2 pole xl motors and had the best ballance between power and heat around 7 degrees. here are some interesting post on timing. http://forums.offshoreelectrics.com/...earchid=289644

try different timing before changing props (it is free). i know this boat is heavy but 4 xl's should be able to turn 447's. if you use anything smaller you will have a hard time pushing that boat. my opinion is in something that large you will have better experience with a big prop spinning lower rpm than a small prop spinning high rpm

just my thinking....

[crabstick]

Do you know what timing you are currently running?

Could also detongue the x447's a bit or if you dont like doing prop mods just by m447's for it

[Meniscus]

I think you really captured the spirit here for FE. We all try stuff and that's how we find out what works. I'm very glad your build met your expectations and that you are looking to take it to the next level.

[bustitup]

leave it to crazyfast to come up with this.........its worth watching his vids just to hear him laugh

from the first time a saw his sprintcat40 video I had to have it...its the one in my avitar with fake paint job...lol

way to rock Randy

[rearwheelin]

i think your timing is way too high. everyone has different opinions on it but i have used several feigao 2 pole xl motors and had the best ballance between power and heat around 7 degrees. here are some interesting post on timing. http://forums.offshoreelectrics.com/...earchid=289644

try different timing before changing props (it is free). i know this boat is heavy but 4 xl's should be able to turn 447's. if you use anything smaller you will have a hard time pushing that boat. my opinion is in something that large you will have better experience with a big prop spinning lower rpm than a small prop spinning high rpm

just my thinking....

I think I may have jinxed my thinking when I was programing timing , the timing in set factory at 15 deg.. On the bench with no load on motors the motor would cog at lower timing, I tried timing in all 8 setings from 0- to the max 30. The motors seem to cog worst at lower timing, I'm not sure if this is because they are free spinning with no load. Didn't really seem to have problems in the water. Motors built heat fast with no load on max timming and hardly nothing at the lowest. I really wanted to try the lower timing out on the water but I had time restraints. Next time out I will go down from 15 to 7 degrees .