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Twin Engine Nitro Build

Old 08-21-2006, 04:11 AM
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Woodmandan2
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Default Twin Engine Nitro Build

Hey
I have a Shockwave 36 Hull and I wanted to make it a Twin engine with twin outdrives. If i have to use those way overpriced MHZ stuff i will. And I could use smaller nitro engine's like .05's used in buggys but I would rather have Twin TRX 2.5 (they have a watercooling head option) and i would hack one outa my jato and buy a nother one off e-bay and but a o.s. 18 tm for the jato. I was thinking i could use outdrives like the nitro vees' or the villians or would the trx's over power them. for the throttle servos i could get a y adapter like on airplanes. I want 2 engines because they are just like one of those big 350k fountain racing boats.
Dan
Old 08-21-2006, 08:31 AM
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Ron Olson
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Default RE: Twin Engine Nitro Build

Fair warning, if you're not an experienced boater with years of working with boats, twins can be a nightmare.
Old 08-21-2006, 06:52 PM
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Raylon
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Default RE: Twin Engine Nitro Build

Yea, agree with Ron there. I can't imagine the nightmares of tuning a boat with two engines. One gives me enough problems.

BTW, you can get a $80,000 Crownline with two engines, too. Want to be like a Fountain Race Boat? Get three engines. Even seen four before.
Old 08-24-2006, 05:08 PM
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COOL RUNNING
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Default RE: Twin Engine Nitro Build

I HAVE FOUR BOATS WITH TWINS ENGINES ITS NOT HARD TO TUNINE ALL YOU NEED IS A HEAT GUN
Old 08-24-2006, 09:08 PM
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skymortar
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Default RE: Twin Engine Nitro Build

those drives are really just for looks and they take alot of power to turn
Old 08-25-2006, 09:48 AM
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Woodmandan2
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Default RE: Twin Engine Nitro Build

I've heard With twin sticks though that it is hard to keep both props in the water.

I HAVE FOUR BOATS WITH TWINS ENGINES ITS NOT HARD TO TUNINE ALL YOU NEED IS A HEAT GUN
Hey Could You help me on how to put the twin engines and all that stuff?
Thanks
Dan
Old 08-25-2006, 10:13 AM
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Ron Olson
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Default RE: Twin Engine Nitro Build

Ok, think about this. The people that build and race twins have found no advantage of using twin engines under .45's.
When a mono hulls turns, it leans which means that one prop is going to come up higher out of the water possibly over-revving and blowing it up. This is why it is rare to see twin engines in mono-hulled R/C boats. They work in 'riggers because they stay somewhat flat in the turns.
Old 08-25-2006, 08:16 PM
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Woodmandan2
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Default RE: Twin Engine Nitro Build

but outdrives completely eliminate that don't they?
Dan
Old 08-26-2006, 12:04 AM
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Ron Olson
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Default RE: Twin Engine Nitro Build

Only if they're mounted deep enough.
Old 08-26-2006, 12:41 PM
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Woodmandan2
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Default RE: Twin Engine Nitro Build

well On those big offshore racing boats they can turn at 40-50 moh
Dan
Old 08-26-2006, 10:46 PM
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Ron Olson
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Default RE: Twin Engine Nitro Build

If you're dead-set on trying it, have fun.
Old 08-26-2006, 11:15 PM
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Default RE: Twin Engine Nitro Build

LOL
Ok well i'll try it out. I'm gonna look at different places where to get outdrives and stuff. Do you guys have any motors to reccomend?
Dan
Old 08-26-2006, 11:49 PM
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Default RE: Twin Engine Nitro Build

there was a large cat hull with twin .90's in it at our race, it didnt race but it was there, I asked him about it and he told me that it wasnt that bad to set-up and was just awsome to look at!
Old 08-26-2006, 11:59 PM
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Default RE: Twin Engine Nitro Build

Ok
Well I just got done lookin at MHZ drives and i wonder if they will combine things like if they would combine an order for a blackhawk Z drive and a conter-rotating drive. A saw the scale versions of the fountains hulls on the MHZ website and they look sick but they dont have one in the 30-40's range. they hav a 25", 69" and a 96" LOL
Dan
Old 08-27-2006, 01:00 AM
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Default RE: Twin Engine Nitro Build

Hay kinda off topic but what ever happened to balintine<<<spelling.. Thae used to have the absolute best looking hardware anywhere I think they were all gas boats but not sure its been a long time since I have seen any of there stuff
Old 08-27-2006, 01:10 AM
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Ron Olson
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Default RE: Twin Engine Nitro Build

Rich shut the business down for a while because of problems in the family. From what I heard he was busy tending to his father who wasn't in very good shape and other things going on at the same time.
He made some of the best looking hardware that you've ever seen but it was made for gas boats. He was really into the big ones as he had a kit that took something like a 64cc engine.
Old 08-27-2006, 06:28 AM
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Default RE: Twin Engine Nitro Build

hey wont twins actually sink the hull in question? or maybe even burst it into flames? i have a traxxas nitro vee and if i am correct the boat in question is abs plastic as well. i would never attemp that build . i am experienced in boats and all but wow.. my vee is only 31 inches ...
Old 08-27-2006, 09:56 AM
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Default RE: Twin Engine Nitro Build

No, it's a 'glas hull but thin. There would be a lot of work involved in try to do such a feat. First is finding a a twin-engine motor mount for the engines. Secondly is remaking the engine rails as they aren't wide enough then making a new radio box. drilling holes and filling others, adding another fuel tank then setting up both engines exactly right. There are only a handful of boaters running twins in mono hulls and these people have years of experience behind them. Using outdrives on R/C boats makes them handle weird enough with just one, I'd hate to imagine how they would react with two.
If I were to even think of trying this, one of the last boats that I'd try it on wouldn't be any ProBoat boat.
Old 09-01-2006, 03:11 AM
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Default RE: Twin Engine Nitro Build

If you are considering twins, it's best to get two brand new identical motors, with no modifications. You want them to be as closely matched as possible, so their tuning, and power is as close as possible. Also many racers that go for twins have one motor run in the opposite direction to counter act prop walk and increase stability.

I would agree with Ron though, below 45"s it's not worth it. Twice the motors means twice the headaches, twice the cost, twice the fuel, twice the maintanence.

There is, however, nothing quite like the sound of a twin going down the stretch at full song. It's somthing ti hear....
Old 09-03-2006, 02:15 AM
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Default RE: Twin Engine Nitro Build

Well I guess i won't use twins then. Mabey i could put an ops .67 in that hull
Dan

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