47" twin mono to one outdrive build

[z400]

Trey, you learned 20 years ago but the paper method has been proven to work.
Just throwing that out there.

[treystoys]

Its impossible for the paper method to be entirely consistant, and its now way fool proof, your much better off learning to properly set mesh by feel...that was started years ago with the car guys with a specific pitch gear, so to say its proven is no correct, I'd say "it can work" and leave it at that. Think of it like this, 3 gear sets, one 64 pitch, one 48 pitch, and the other 32 pitch...paper method on each, I'd wager a bet that the 64 pitch set would be too loose, and possibly strip, the 48 pitch set would be pretty close to perfect (not totally) and the 32 pitch gears would be meshed to tight, melting/grinding gears overheating electronics...ect. If the paper method worked, I'd use it, but I don't, and never recomend anyone to set mesh that way because papers differ, as do gear pitch and composition all of witch effect mesh. Other wise when I'm building a rear end for my race car I should be quite alright to run a sheet of paper between my ring and pinion, if it comes through in one piece I'd be good to go. Not the case...I'll leave it at that, and I'm not bashing, just offering a better solution to a high power/dollar set up which will need proper mesh to live and run long.

Trey

[Jacked1]

I am not worried too much about the gear mesh, i think i got it good. as close as they will go with a little bit of play. any looser on my villain and it would start making the gears break and they are 32p btw. I think i should be pretty good and go fast starting out at 1600rpm.

[Make-a-Wake]

Hey Jared........been watchin' your build, very interesting. Hopefully things will quit breaking.............. It got to movin' pretty well in the second vid.

I hope those big outrunners are gonna be enough ooomph for ya............remember that they have 6 mm shafts............those can cause fits sometimes. I actually ground down the shaft in a KB45 to 5mm once..........took quite a while to say the least. Keep on with it!!

[Jacked1]

Thanks!I think i got all the drive issues worked out for now. The same gear hubs i used on the drive gear come in 6mm shaft size too. That was one reason i used the outrunners. If i can get 1700rpm at the shaft without overloading the esc's i am confident i will get 60mph++ out of the boat when trimmed if it stays stable.

[TotalPackage]

Hey Jared........been watchin' your build, very interesting. Hopefully things will quit breaking.............. It got to movin' pretty well in the second vid.

I hope those big outrunners are gonna be enough ooomph for ya............remember that they have 6 mm shafts............those can cause fits sometimes. I actually ground down the shaft in a KB45 to 5mm once..........took quite a while to say the least. Keep on with it!!

You can get 6mm coupler from ose or i can have the machining dept make some up
pm me let me know.

[mschaffer66]

I'd like to see this boat move out good and give hope for a budget friendly large boat build

[Jacked1]

You can get 6mm coupler from ose or i can have the machining dept make some up
pm me let me know.

Thanks for the offer! but i already have some

http://servocity.com/html/set_screw_hubs.html

[Jacked1]

I'd like to see this boat move out good and give hope for a budget friendly large boat build

Yea me too!! i think you could get away with the 200amp himodel escs and go 6s and 1100kv versions of the motor too. Then the motors and escs would be around 150 without shipping for 6kw of power! 30 bucks for the radio and servo, i think you could get the hardware and prop for under 80 and then find a cheep hull. I really hope it all works, I think it will be a really fun boat!

And anyone interested in those motors they seem verrrrrry well built! I heard of someone getting 50mph on the first run in a big cat with the 1400kv verson.

[Jacked1]

Hey Jared........been watchin' your build, very interesting. Hopefully things will quit breaking.............. It got to movin' pretty well in the second vid.

I hope those big outrunners are gonna be enough ooomph for ya............remember that they have 6 mm shafts............those can cause fits sometimes. I actually ground down the shaft in a KB45 to 5mm once..........took quite a while to say the least. Keep on with it!!

Thanks! And i might need to look into the grinding for my mean machine! i have an idea if to get the power to the prop but i dunno how it will work.

I got all the gears today to test it out on 6s and maybe 7s if the escs don't get too hot. I am going to make the new mounting plate tomorrow!

I am prolly going to wind up on 10s sometime next year at whatever gear ratio will get me to 100amps per motor. That would be 37x100x2=7400 kilowatts and just under 10 hp!

[TotalPackage]

Thanks! And i might need to look into the grinding for my mean machine! i have an idea if to get the power to the prop but i dunno how it will work.

I got all the gears today to test it out on 6s and maybe 7s if the escs don't get too hot. I am going to make the new mounting plate tomorrow!

I am prolly going to wind up on 10s sometime next year at whatever gear ratio will get me to 100amps per motor. That would be 37x100x2=7400 kilowatts and just under 10 hp!

you mean 74kw dont you?

[TotalPackage]

Jacked you need to let those plastic gears go and dont even think about running some 64 pitch gears in the boat run metal 32 pitch bigger stronger teeth. If not that 48 will be you max pitch on the gears anything over will likely strip.you need to be looking for maybe a 1.75 to 1 ratio and 10 s like you mentioned then you can probably turn a gas prop like you want.those motors need to be running upward of 30 k

[Jacked1]

ooops! 7.4 kilowatts! hahaha And the gears i have are 32 pitch and a lot bigger that the old ones just for that reason. When i get to the final gear ratio I was thinking i could make them double wide and just connect 2 side by side on each gear hub or get metal ones them but to tune it i'm gonna just use the plastic ones to save some money.

[TotalPackage]

I disagree with the estimated speed in your run when you punch that thing its faster than 25mph not a very big lake to stretch out on.You better be preparing for OSU first game id hate to see the buckeyes get bucked coz u playin with boats. LOL Now of course you know when and if yall lose any games this year im gonn ride you sooo bad. Go sooners!

[Jacked1]

Hahaha yea i think it was more like 35-40mph but yea i think we're gonna do pretty good this year! If it rains enough it could flood the field and i can strap the ball to a boat!