crazyotto

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ok i have a nitro engine from a savage , if i run it in my 1/12 scale bud boat with the head exposed do you think that will cool it enough?? if i can get it to work it maybe a fast boat ...i have a stock .28 for this project

saleens7

i would think so, car engines are cooled via airflow...so it should be the same in a boat

crazyotto

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id think so too ....

misshydro

I have three thundertigers.21s comming and there car motor,Hey I'd got them for 15 dollars from ebay.Hay if one is good then I'd did good in getting them.,Also I'm planning to run a.28 or.32 ofna motor in my boat when I get it. Aslong as you got good air flow it should work,But I'm going to fab a cooling tube around acouple of fins on the head for extra cooling.[8D]

crazyotto

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what is your idea for exhaust? sounds funny but maybe ill start at the top with a savage pipe too... but ill be interested to see how it works if it does then ill start experimenting with pipes .

keep me informed as you go lil missy

Ron Olson

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No problem as they'll get more air than being stuck under a Lexan body. They may get too much as the air close to the water is cooler than a dusty track.

crazyotto

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thanks ron ,

crazyotto

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does anyone know the c.g. for these 1/12 scale hydros i may pull it down from shelf and see what i can create here

mopartybob

all my 1\12 hydro's cog are 3 1\2 - 4" behind the sponson,.....miss llumar 3.5", miss vegas 4"....[:-]

crazyotto

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thanks ill remember that and is that with the oem motor because mine is alot heavier

crazyotto

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wondering if anyone has seen a wrap to center header for a 28 big block motor otherwise im going to have to hack the heck out of my cowl

misshydro

If you can wait.I'd just got my thundertiger.21s today and I'm planning to use one in my MIss Bud and going to start on the exaust system,I have it planed out the way I want it.It will look awsome!!With out hacking up your cowl eather!! When I do it,I'll post the pics of the exaust system,if you like it I can fab you one too! Is your motor front exaust? If so My idea will work with yours![8D]

crazyotto

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ahhhhh i think i lost my doner motor for the hydro , i guess ill have to find one ....but i mocked it up with one of my race motors NOT for this . and it looks like a easy setup i just have to figure how im gonna attach the shaft with my setup . but overall if i can get this rigged right it shall fly ....anybody have speed numbers on this hull with a .28 mtor or simular setup??

Ron Olson

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Bob Kensill was doing some work with a .28 in a mono and was getting some awesome speeds out of it. I can't remember the speeds or which .28 that he was using off-hand as it was a good year or so ago that he was messing with it.

crazyotto

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im also wondering , if i should put a more of a torque engine in it or more of a hi rpm engine it , all my experience is with large scale stuff , my reasoning is i know these plow the water alot under low speeds and in the turns a bit , so im wondering about the engine .

misshydro

The higher the rpms=faster speeds you'll get.That what I only want from a motor that have 2.0 hp or more and rpm at top ends out at 38.000-40.000.[8D]

misshydro

Hers the pics of that head I was talking about!!

Ron Olson

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Can ya downsize that pic a little? That's gonna kill members on dial-up.