I havent looked at the kv on the 10xl's, but Im pretty sure you get more rpm with the 9xl's on 4s.Id buy the 9's.Soon as I get my rescue boat done,Im gonna run the EKOS again.Im positive I can get more than 64mph out of it.I ran out of room last night.
SeaKing 120 esc
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I ran the ekos on my 442's for the first time today. I couldn't reach full throttle because the front end was ready to blow over @ 50mph. It seems like the bigger the prop, the more lift on the transom, causing more air to pack in between the sponsons giving it more lift. The boat looks like an airplane wing @ 50 with the front end bouncing a lot. Weird because the boat is rock solid on my cf-40's. I guess I'll remove the battery trays and push my lipos forward like you Larry. I am a little baffled by this because everything I've read on this forum has told me that the center of gravity on a cat should be at or near 30% from the transom. I'm also considering moving the esc's in between the motors and putting the lipos in front of the motors in the sponsons to keep the weight as low as possible. Well see how it handles with the batteries forward a couple inches from their original position first.Comment
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You're right Larry, the 10xl has less kv. About 2400 I think. But they do have slightly more toque than the 9xl and might push the ekos nearly as fast as the 9. The 9xl may not be reaching its max rpm with a larger prop like the 442. Maybe the 10xl/442 is the perfect combo? I want to find out. C'mon scuba...Catch up!Comment
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I ran the ekos on my 442's for the first time today. I couldn't reach full throttle because the front end was ready to blow over @ 50mph. It seems like the bigger the prop, the more lift on the transom, causing more air to pack in between the sponsons giving it more lift. The boat looks like an airplane wing @ 50 with the front end bouncing a lot. Weird because the boat is rock solid on my cf-40's. I guess I'll remove the battery trays and push my lipos forward like you Larry. I am a little baffled by this because everything I've read on this forum has told me that the center of gravity on a cat should be at or near 30% from the transom. I'm also considering moving the esc's in between the motors and putting the lipos in front of the motors in the sponsons to keep the weight as low as possible. Well see how it handles with the batteries forward a couple inches from their original position first.Comment
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You're right Larry, the 10xl has less kv. About 2400 I think. But they do have slightly more toque than the 9xl and might push the ekos nearly as fast as the 9. The 9xl may not be reaching its max rpm with a larger prop like the 442. Maybe the 10xl/442 is the perfect combo? I want to find out. C'mon scuba...Catch up!Comment
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OK......
all are ordered except for the props..
dont know if i want the 442's or 640's???????????
cant find the 640r's...does anyone know if there outhere?
looking for a set b&s so if anybody has a source let me know.
i want the 640's but will take the 440's
and by the sound of things i will have a extra battery tray soon too.
i going to put the esc'c in the center and move the batts infront of the motors.
that seems the sweet spot.Comment
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Working on mine right now.Also,taking the deans off and putting 5.5 bullets on the batteries and esc's.The deans where starting to turn black,so its time to make it right.Might take off the banana plug style bullets and use CC 4mm.Its gotta be pulling alot more amps with the 442's.Next purchase will be a data logger.I need one anyway.I decided not to run my EKOS till I get my rescue boat done-which I did.But,the set screw in the coupler on the motor side flew out and took the threads with it.Itll be sometime this week till I can make another pass with it.Im really hoping for 66mph.Comment
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OK......
all are ordered except for the props..
dont know if i want the 442's or 640's???????????
cant find the 640r's...does anyone know if there outhere?
looking for a set b&s so if anybody has a source let me know.
i want the 640's but will take the 440's
and by the sound of things i will have a extra battery tray soon too.
i going to put the esc'c in the center and move the batts infront of the motors.
that seems the sweet spot.Comment
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OK......
all are ordered except for the props..
dont know if i want the 442's or 640's???????????
cant find the 640r's...does anyone know if there outhere?
looking for a set b&s so if anybody has a source let me know.
i want the 640's but will take the 440's
and by the sound of things i will have a extra battery tray soon too.
i going to put the esc'c in the center and move the batts infront of the motors.
that seems the sweet spot.Comment
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I dont know about the 640's.I just bought my 442r from OSE last week,and there where 4 in stock that where S&B.Look here and get those before they are sold out.What motors did you get?You should do a build thread for the new guys that are wanting an EKOS.And dont use deans!I thought I could get away with it,but now Im soldering connectors twice.Be sure you use bullets on everything.Comment
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Working on mine right now.Also,taking the deans off and putting 5.5 bullets on the batteries and esc's.The deans where starting to turn black,so its time to make it right.Might take off the banana plug style bullets and use CC 4mm.Its gotta be pulling alot more amps with the 442's.Next purchase will be a data logger.I need one anyway.I decided not to run my EKOS till I get my rescue boat done-which I did.But,the set screw in the coupler on the motor side flew out and took the threads with it.Itll be sometime this week till I can make another pass with it.Im really hoping for 66mph.Attached FilesComment
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Whats another few hundred bucks when we have around a grand in some china hull?Hell,I just spent another $110 on used 6s motors and still have to get two 180 esc's and see if I can cram all that in the EKOS.I dont think I can stop.Gonna run with my buddy tomorrow after work.He has an operational rescue boat.Im really hoping on 66mph.Let me know how yours runs with the 442's.Comment
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