mini speed boat PLEASE help!!!

[84 centurion]

This is a 84 centrurion mini speed boat. I dont know much about this just getting started on building boats. I have read some stuff about setting up for the right size motor. I think it needs a long shaft motor it mesurese 21" from bottom to top of transom. but have been told it needs a short shaft also. sooo i need some help lol .. I have never set up a boat before only been into ATV my whole life.. looking to go fast too.. I found a 40hp yamaha long shaft i would like to put on it but like i said dont know what size shaft it needs please help me

[fyremanbil]

It should have a short shaft (15") on it. A long shaft would be top heavy and really look odd.

[superboat24michael]

ya you need 15"

[84 centurion]

ok thanks.. should i put it on with a jack plate? if so what kind?

[fasttoons]

I'd say keep it simple -just get a short shaft motor(15") and prop it right.

[40hpmariner]

ya man u need a 15 but try to find anothe 40 yammi there good motors..

[HPShadow]

15 mid right to the transom

[Evolution Marine]

We have the same hull with 15" 50 merc. we only ran once so far but its gunna be fun no bounce. I was told to set it back 6-8" put some weight forward and propshaft even with the bottom. Ill let you know next run. Todd

http://i359.photobucket.com/albums/oo37/buddyroe-88/Lil%20Ride/lilride008.jpg

[jpeelout]

Judgeing only by the fact that Evo's boat is on a cardboard box and the 15" 50 mercury is huge, I would put money down that it really hauls @$$.

[Evolution Marine]

Judgeing only by the fact that Evo's boat is on a cardboard box and the 15" 50 mercury is huge, I would put money down that it really hauls @$$.

not yet but it should with the right prop. its 460lbs like you see it batt and 3gals gas w/o driver. set it down off the scale in the pic on a lower unit box while we welded trailer axle... lol

[milkdud]

id like to see more photos of that thing. It looks awesome! What hp are people usually putting on them? What speed will they run?

[84 centurion]

Yea that boat looks just like mine can you let me know what type of jackplate you used and all the small things you think I should know in order to set mine up like that. Like the placement of where you put your weight and how much. Where gas tank is? That boat is awsome please put up more pictures. Thanks. Levi

[84 centurion]

He man that's awsome can you help me set up my boat? I would like all the details on that thing it's sweet!! Thanks levi

[fastcat]

Here is a few pics of mine.
http://i52.tinypic.com/2h35s1w.jpg
http://i52.tinypic.com/2qvs8yr.jpg
http://i54.tinypic.com/11jsppt.jpg
http://i54.tinypic.com/i27sd3.jpg

15" 40hp yammie modded
propshaft is 1-1/2 above bottom 4" setback from transom.
I have a 23 pitch cleaver that i cut down from a 14-1/2 to a 12"

I have seen a best of 56mph gps. It should go well into the 60s.
I think the prop needs to be 11-1/4 or 11-1/2 dia. For it wont spin the motor up. Right now. kind of lugs around.

Good luck with yours they are a blast:D

[84 centurion]

He man that's awsome can you help me set up my boat? I would like all the details on that thing it's sweet!! Thanks levi

[84 centurion]

He man that's awsome can you help me set up my boat? I would like all the details on that thing it's sweet!! Thanks levi

[84 centurion]

Hey msn your pics didn't load up can you try again?

[Evolution Marine]

We havent had time to play much need to put more weight fwd but when we get it running I will let you know. thanks Todd

[84 centurion]

Hey man your pics didn't load try again

[Evolution Marine]

ran ours yesterday lil boat is sweet. we put 35lbs fwd and run 55.62543 mph :) on the rev limit hard with the 18 cleaver. engine is broke in now and will run today without the rev limit. vids soon Todd

[Evolution Marine]

http://i359.photobucket.com/albums/oo37/buddyroe-88/Lil%20Ride/th_lilridevids004.jpg (http://s359.photobucket.com/albums/oo37/buddyroe-88/Lil%20Ride/?action=view&current=lilridevids004.mp4)

[84 centurion]

Dude Todd that thing is haulin....is it set up with a hotfoot? Whats a cleaver? lol like i said i am new to this boating thing. I live in arkansas and won the boat i have on ebay and it was in new hampshire so i had to get it home now its here and i have no clue to where to start at with this thing.. lots of pics of the inside of the boat would help too if you can.. you have been alot of help already thanks alot!! these boats i hear are very rare and i would love to get this thing going bc i will be the talk of the town when i drive up to the sandbar in this thing haha thanks...Levi

[mr fun]

I have a merc 50 with a tiller I intended to use on a inflatable. older style than the other fellows w/2 piece cowl. thinking of cleaning house a bit. fun out :cool:

[Evolution Marine]

we have it set up as neal down with squese throttle, lil shifter, hyd steer, 6lb birrale battery, 3 gal tank, 8" jackplate, and a 18p ronhill cleaver that is worked. hit 60 in last run now we gunna jack it up and tune motor. the 50 is stock besides the water intake on lower. i'm building a set of carbs for methenol right now gotta 55 gal drum of it at the shop.
http://i359.photobucket.com/albums/oo37/buddyroe-88/Lil%20Ride/lilride012.jpg
http://i359.photobucket.com/albums/oo37/buddyroe-88/Lil%20Ride/lilride011.jpg

[40hpmariner]

we have it set up as neal down with squese throttle, lil shifter, hyd steer, 6lb birrale battery, 3 gal tank, 8" jackplate, and a 18p ronhill cleaver that is worked. hit 60 in last run now we gunna jack it up and tune motor. the 50 is stock besides the water intake on lower. i'm building a set of carbs for methenol right now gotta 55 gal drum of it at the shop.
http://i359.photobucket.com/albums/oo37/buddyroe-88/Lil%20Ride/lilride012.jpg
http://i359.photobucket.com/albums/oo37/buddyroe-88/Lil%20Ride/lilride011.jpg
lookin good man!! 60 without full setup!! holy! looks like you've been hard at work! congrates! ps it looks sexy aired out :cool: :cheers::cheers:

[Mike Nass]

Here are some shots of my son's boat... we have the molds for these... We have a built a few of them in the past but don't plan to build any more... too much work for what you get. I think the Centurions are a version of this hull which was originally built by Eliminator... I believe the Centurions might be a bit shorter??? These are 11.6' and my son runs a 30HP Yamaha 15" with a aftermarket Power trim which make a huge difference! Depending which prop he runs, if will run from about 42 mph with a ski prop and he's seen 52 with a chopper and the engine raised a bit... The very best addition you can make to one of these boats is a bilge pump! They are a must!

If you can find a 15" 40HP, that would work awesome... Believe it or not, it will tow skiers very well, it's a great, fun boat!

Cheers,

Mike

[KG4]

Check out my post of (Check this out) Looks like the same type of boat.

[84 centurion]

heck yeah man that boat looks like mine too. I hope to get mine set up soon!! thanks for the pictures i might need some more help with the setup later on..

[Gilles1]

Levi i have motors for your little boat 603 7248798

[tabararacing]

Levi, welcome to performance boating!

These guys are steering you in the right direction. You're going to want a 15" engine.

With small boats the most important thing is to keep the weight to an absolute minimum.

Our customers who run the sport c class with Tohatsu/Nissan, OMC, and other 40 HP engines run 63 to 64 mph. The run with a total rig weight (w/ driver) of 675 lbs. They are able to do this because they have great racing cleaver propellers, strong powerheads, setup and most importantly overall weight.

If there is anything that we can do for you, don't hesitate to send an email or call. [email protected].

Good luck Levi and be safe!

Brian

[jpeelout]

Guys, I'm in love. It almost makes me want to junk my Hydrostream vipee and get one of these! Almost, but not quite! I may get one after I finish my current boats. Do y'all have any tips for buying ie.: is there any core material to worry about, light layup on glass, poor craftsmanship, etc?

[Evolution Marine]

Guys, I'm in love. It almost makes me want to junk my Hydrostream vipee and get one of these! Almost, but not quite! I may get one after I finish my current boats. Do y'all have any tips for buying ie.: is there any core material to worry about, light layup on glass, poor craftsmanship, etc?

Yeah the core is balsa and transom is wood. We lucked up on the one we have no rot at all. our hull is 180#. good luck Im sure theres still a few out there.. Todd

[JrCRXHF]

Mine is smaller then what you guys are running plus i have no center pod.

But i am looking for a new 15" motor (i really want a stinger) With gas prices going up i might as well run the little cat.
Mine is 10.5ft long and has a 12gallon tank up front.

https://lh3.googleusercontent.com/_N4yenoX55yI/SNWUc_yW8bI/AAAAAAAALMg/s9HMEpGUp-Y/s720/DSC_0094.JPG
https://lh5.googleusercontent.com/_N4yenoX55yI/SNWUrjBFIpI/AAAAAAAALOA/jR8fMz1c2u4/s720/DSC_0098.JPG

https://lh4.googleusercontent.com/_N4yenoX55yI/TCAjLmAFOWI/AAAAAAAAr0w/xuRkG49Q7Us/s720/DSC_0004.JPG

Brothers little boat with a 45ss power head. Jackplate and T/T

https://lh4.googleusercontent.com/_N4yenoX55yI/SNWT5Q5h3cI/AAAAAAAALIo/7SqJZrc7ZMg/s720/DSC_0084.JPG

[84 centurion]

thanks man i will give you a call monday..

[84 centurion]

hey brian thanks for the help, i am still searching for a motor everyone i live in southern arkansas right on the LA line. I would really like to get this thing going all my friends here are so excited to see it go, i bought it from new hampshire and had it shiped here there are no boats like this one here only larger jet boats... I have no clue with what type of jackplate to use, i dont know if they make a smaller one or what. I guess it all depends on the motor i get weather or not if it has trim already on it or not.. thanks everyone keep the info coming.. Levi

[84 centurion]

232272232273wooohoo got me some new parts for the project hopefully a motor soon! and some more pics of the boat. 232271

[Capt.Insane-o]

Thats a lot of setback for that boat. I'd cut the plates in half at least.

[Capt.Insane-o]

Mine is smaller then what you guys are running plus i have no center pod.

But i am looking for a new 15" motor (i really want a stinger) With gas prices going up i might as well run the little cat.
Mine is 10.5ft long and has a 12gallon tank up front.

https://lh3.googleusercontent.com/_N4yenoX55yI/SNWUc_yW8bI/AAAAAAAALMg/s9HMEpGUp-Y/s720/DSC_0094.JPG
https://lh5.googleusercontent.com/_N4yenoX55yI/SNWUrjBFIpI/AAAAAAAALOA/jR8fMz1c2u4/s720/DSC_0098.JPG



https://lh4.googleusercontent.com/_N4yenoX55yI/TCAjLmAFOWI/AAAAAAAAr0w/xuRkG49Q7Us/s720/DSC_0004.JPG

Brothers little boat with a 45ss power head. Jackplate and T/T

https://lh4.googleusercontent.com/_N4yenoX55yI/SNWT5Q5h3cI/AAAAAAAALIo/7SqJZrc7ZMg/s720/DSC_0084.JPG

Pangborns has a 15 Stinger hidden in the back. That last nice Sunday we had I ran almost 80 miles on 13 gallons of gas in the river from Bay City to Midland and up the Cass some in my Vixen/Hustler combo.

[Mr. Demeanor]

Ive gone 70 miles of pretty hard running on 13 gallons with my 130 Yamaha. That barley gets me to the inlet in the big boat.
I can get about 7mpg if I just cruise with a big prop.

[84 centurion]

yep i took that plate off right after the pic currently looking for a replacement to go back with, also still looking for a 15" motor 40hp to go on it also... hopefully i can get this thing running soon all my buddies are ready to see it out on the river. i cant keep off this site long enough to do anything i keep doing research haha

[Jason Johnson]

Ive gone 70 miles of pretty hard running on 13 gallons with my 130 Yamaha. That barley gets me to the inlet in the big boat.
I can get about 7mpg if I just cruise with a big prop. That's how it is with my 90, I have a 100% stock powerhead on it right now, @ 6000 with the big cleaver it runs 70.8mph the gas just stays in the tank. I keep checking and checking and wow!!!!, 84 I went looking today for a 40 for you, I'll find one soon.

[84 centurion]

Thanks man just let me know if you come up with anything wanting to get on the water as soon as possiable...if ya know what i mean

[JrCRXHF]

I bought a stinger from him i think it is the one you are talking about sometime this week or next i have to go pick it up. Just got the little boat back to the house today.

[84 centurion]

234147234146234145234144234142ok guys here's some updated pics of the project still alot left to do but hopefully will make a pass in two week if not earlier..

[Mr. Demeanor]

Your going to want to get the motor up if not for speed but for holeshot. These little boats want to stand on there tail when they launch. The lower the motor, the more leverage trying to lift the bow. With the motor higher it will flatter without plowing. Of course, at some point it will lose bite but try and find that spot.

[Evolution Marine]

Looking good! We ran ours propshaft even with bottom first time we ran and hole shot is awesome just make sure have a hot horn and watch water psi...

[84 centurion]

Ok guys ran the little boat for the first time yesterday and found one major problem I think I know how to fix it but want y'all opinion. The jack plate I have is dragging in the water when. The boat planes out and just moving it up a little wont be enough so I think I am gonna have to cut part of the angle piece off the bottom. Does anyone have Any suggestions?? It sprays water up about two feet. Also Todd how much weight did u add up front of yours? Did you do this to help out when u are slowing down bc mine seems to want to sink when I let off the gas. Thanks levi

[Mr. Demeanor]

You can make a skid planer to go under the jackplate. It will act like a trim tab helping the boat plane off and keep water from shooting up inside the jackplate. Do a search for "skid planer"

[Evolution Marine]

Yes ours will sink if I get out. we put about 30 lbs fwd the move it back when running helps a little. And the higher you jack up the engine the better the hole shot.

[JrCRXHF]

I put 12 gallons of fuel in the front of mine to help with the weight issue. I have not tried the new 75 on the back of the boat yet.

[84 centurion]

Ok thanks guys I am going to try some of this stuff out y'all are very much help can't thank you guys enough. Found some cool ideas for skid planners too. Will try to make a run hopefully by this weekend.

[84 centurion]

236365236364236363236362here are some pics of the skim planner my dad and myself built to keep the water from coming between the boat and jackplate.. I have since moved the motor up and the plate may not be needed anymore but will see. I ran the boat for the first time and didnt like the stoping part because the boat felt and looked like it was going to sink because of the weight of the motor. I added two small basketballs between the boat and jackplate at the very bottom and the difference is huge!!!! before raising the motor up the boat was runing 38mph dont know what its running now with it up. still have to prop it out right to, but its coming together a little at a time. If you have anymore sugesstions feel free to comment thanks.

[Mr. Demeanor]

You need less setback.
I think this would work much better than the jackplate you have, Make adjustments will be harder but the end result will be much better.
http://cook-mfg.net/cart/index.php?main_page=product_info&cPath=10_13&products_id=13

[84 centurion]

ok yeah i checked that out seems like it would work great, I guess there are so many options to go with, I wish it had trim because it seems like i can get more out of it if i could adjust when finally on plane. I guess will jusst have to keep working with it. I do like your idea though. thanks

[Evolution Marine]

I couldnt imagine running ours with out trim. That would help alot. We gunna move our closer to the transom.

[84 centurion]

I plan on getting trim at some point in time. Let me know how close you move yours and how u did it. It's really not that bad without trim just have to get in the gas hard out of the hole and it dosent like slow speeds. What speed are u getting out of yours?

[Evolution Marine]

Last run 60. we going to jack up motor next. we lowered is cause we was having trouble with the engine. got it fixed and got pleanty water psi now.

[84 centurion]

Wow 60 I could only hope to get that!!!! I am looking for 50. I was doing 38 before I raised the motor up 2". Going to run again this evening hopefully at least 43mph. I haven't proped it out yet trying to get as fast as I can then change props. Post a video of your run when u run it next time. I will do the same. These things are awsome I lOve mine can't wait to get it all set up.

[Evolution Marine]

Did you get time to play with it anymore? We ran ours awhile back and looking for a prop now. Turned 6700 for 64mph. About to start playing again. Todd

[Pitch'ndude]

Not meaning to jack thread, but where might I find a stinger or another of the minni's

[84 centurion]

Did you get time to play with it anymore? We ran ours awhile back and looking for a prop now. Turned 6700 for 64mph. About to start playing again. Todd

Hey man I haven't had time to run it anymore, I got the trim hooked up the boat seemed to start lifting up in the front like it's about to take off but as soon as that happens it blows out. I need a prop for it but can't find anyone who is willing to let me try out any to see what ones I need! Sure would like to make this thing work. I sm only getting like 39 out of mine. And I think the motor I have is hurting me on that too. Would like to get at least 50 out of it.

[Evolution Marine]

Not meaning to jack thread, but where might I find a stinger or another of the minni's
I lucked out with mine. Got it from a freind. I will keep a eye out. Search the net from craiglist to ebay.

[Evolution Marine]

Hey man I haven't had time to run it anymore, I got the trim hooked up the boat seemed to start lifting up in the front like it's about to take off but as soon as that happens it blows out. I need a prop for it but can't find anyone who is willing to let me try out any to see what ones I need! Sure would like to make this thing work. I sm only getting like 39 out of mine. And I think the motor I have is hurting me on that too. Would like to get at least 50 out of it.
I will check on a prop for for you.

[84 centurion]

Thanks man I really appreciate it. It's hard to find anything or parts around here.