SeaKing 120 esc

[LarrysDrifter]

i did the same thing but took out the fake pipes and went with rivits...
nice job...
can you see the water come out when you buzz by?????
i cant but i know it works because my heat is around 115-130
plus if i use my pump to check the fittings it flows out nice.
check out the pic (avatar)and you can see the difference.

Cant see the water at speed of course-or when cruising by slow.It works though.Temps dont get any higher than 116 for everything so far.Running cool-time for some 442's!OSE got some cf-40's in,but wife wont let me get them because I just bought 2 motors from the swap shop.Theyre only $5.00 each!Maybe I wont need them if I can squeeze the motors in there.There 1650kv outrunners with jackets and going on 6s.If they ll fit,thats where theyre going.Crash time!

[LarrysDrifter]

Your EKOS looks good.You have more pics?Is it stock still?

[scubasteve95]

Your EKOS looks good.You have more pics?Is it stock still?

thanx....
yep still stock except for some extra cooling
and a new rudder...got all the pics you need...
didn't like the paint job i did around the hatch so i took it off.
i also dont have the outlets on the side anymore...
i epoxyed the hole and just use the rear exit ports now,
1 on each side for the motor and the other for the esc's and motor mount together

[scubasteve95]

heres some more...
thats the new aeromarine rudder i
picked up.got rid of the intake tubes from the old rudder
and use the hull flush mount doubles on each side
for the esc's and motor mount coolers
the rudder just cools the motors...i also drilled another intake port on
the other side of the rudder so i didn't have any cooling
lose.(like the rudder on the 54"kos gas)

[LarrysDrifter]

Looks good.I have the dual floor mounted pickups in mine too.I cant believe its still stock.

[scubasteve95]

thanx ,
YEA SHE'S A RUNNER...........
gunna go with the 10xl's x442 props and some 120amp seaking esc's
jeff's wire drives and boca ultra ceramic bearings
on the same 4s 5000 packs im using now
in a little bit should be able to run all day on that set-up @ wfo
and be just as rock steady as it is now...but alot faster and alot cooler.
want to use the stock venom stuff in another build.i need a bigger springer rescue tug
and should power it perfect.

[LarrysDrifter]

Im using the stock venom esc and motor in a rescue boat Im building.That way,I have a spare motor when the stocker craps out.No back-up esc though.The rescue boat should be a fun little guy to play with.

[scubasteve95]

SWEET....
im doing the same thing but most of the stuff going in to the ekos will be upgraded
i was going to do what your doing untill i saw
forescott pull a 57+mph run and well lets just say
i want one to.atleast this way my rescue tug can be parted out
if i need bearings or hardware...i could use the stock esc's and motors too
if i had a issue but after i hit 50+ it will be hard to go back.

[LarrysDrifter]

My fastest run is 56.6 mph with 38mm metal 2 blade props.Thats with the exact same parts forescott has.He's runnin cf-40mm props.My right hand 442 should be in tomorrow.Im willing to put money on 60mph.And my 38's arent sharpened or balanced.So,heres what Im thinking-and this is not bad mouthing forescott at all.When running a plastic or cf prop,the diameter decreases with rpm.I think they close up somewhat like a Venus Fly Trap closes when it catches a bug.Thats what causes them to lose diameter.Hope that made sense.Its the best I could describe it with out physically showing you.Hes running 57mph with cf 40's-Im going 56mph with metal 38's.Mine being 2mm smaller dia.If he could round up some metal 40's,his boat would be a damn rocket.My temps maxed out at 116 motor and esc.As far as temps go,I feel confident I can safely run 442's with out over heating anything.But as far as props go,I would strongly recommend the 38mm props sharpened and balanced of course.I think you would hit 57 or 58mph.Keep me posted for sure on your rebuild.

[scubasteve95]

My fastest run is 56.6 mph with 38mm metal 2 blade props.Thats with the exact same parts forescott has.He's runnin cf-40mm props.My right hand 442 should be in tomorrow.Im willing to put money on 60mph.And my 38's arent sharpened or balanced.So,heres what Im thinking-and this is not bad mouthing forescott at all.When running a plastic or cf prop,the diameter decreases with rpm.I think they close up somewhat like a Venus Fly Trap closes when it catches a bug.Thats what causes them to lose diameter.Hope that made sense.Its the best I could describe it with out physically showing you.Hes running 57mph with cf 40's-Im going 56mph with metal 38's.Mine being 2mm smaller dia.If he could round up some metal 40's,his boat would be a damn rocket.My temps maxed out at 116 motor and esc.As far as temps go,I feel confident I can safely run 442's with out over heating anything.But as far as props go,I would strongly recommend the 38mm props sharpened and balanced of course.I think you would hit 57 or 58mph.Keep me posted for sure on your rebuild.

one thing i noticed on your 38's is
the pitch is greater...correct me if im wrong
but that is whats giving you your high rate of speed out of a smaller prop....
your heat is about the same as his with the 40's and a lower pitch
check your heat often for afew with the 9xl's on 42's
you are correct about the cf's there is some flex
but it isn't as bad as you think.

[LarrysDrifter]

Your right,I didnt think about pitch.Thats probably what it is.I dont know what the pitch is on the 40's.But, your right about the speed.I plan on timing the 442's.One min-then check.2 min-check again.I like to run for long periods of time,but I might not get 10 minutes out of the 442's.Ill keep checking untill I see it to be too hot then take off 3 minutes or so on the next run.I see a couple guys want the 10xl's,but I dont think theyll have the rpm a 9xl would.Maybe more torque,but mine leaves plenty fast.

[scubasteve95]

Your right,I didnt think about pitch.Thats probably what it is.I dont know what the pitch is on the 40's.But, your right about the speed.I plan on timing the 442's.One min-then check.2 min-check again.I like to run for long periods of time,but I might not get 10 minutes out of the 442's.Ill keep checking untill I see it to be too hot then take off 3 minutes or so on the next run.I see a couple guys want the 10xl's,but I dont think theyll have the rpm a 9xl would.Maybe more torque,but mine leaves plenty fast.

your pitch is 1.45 = 55mm....scotts is 1.4 = 56mm
your rpms are higher with less prop but your travel is almost the same
the wording mite be wrong but the idea is the same...
im going with the 10's on 42's should have no problems and
hit about 55mph...i like to just run it till my batts hit lvc......

[forescott]

My fastest run is 56.6 mph with 38mm metal 2 blade props.Thats with the exact same parts forescott has.He's runnin cf-40mm props.My right hand 442 should be in tomorrow.Im willing to put money on 60mph.And my 38's arent sharpened or balanced.So,heres what Im thinking-and this is not bad mouthing forescott at all.When running a plastic or cf prop,the diameter decreases with rpm.I think they close up somewhat like a Venus Fly Trap closes when it catches a bug.Thats what causes them to lose diameter.Hope that made sense.Its the best I could describe it with out physically showing you.Hes running 57mph with cf 40's-Im going 56mph with metal 38's.Mine being 2mm smaller dia.If he could round up some metal 40's,his boat would be a damn rocket.My temps maxed out at 116 motor and esc.As far as temps go,I feel confident I can safely run 442's with out over heating anything.But as far as props go,I would strongly recommend the 38mm props sharpened and balanced of course.I think you would hit 57 or 58mph.Keep me posted for sure on your rebuild.

I have a set of 442's ready to go. I'm just afraid they might be too big for the 9xl's so I havent run with them yet.

[forescott]

Also think about this... If the diameter of a cf prop decreases and closes like a venus fly trap like you say, then its also increasing the pitch considerably. Hmmmmm......

[forescott]

I am really liking the sound of those 38mm props. 1.45 pitch is slightly higher than the cf-40 which is 1.4, and the slightly smaller diameter will allow the motors to rev higher with less heat. I'm thinking the 38mm might be the perfect prop for the 9xl. Now I want a set!