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twin terror

Old 10-09-2009, 07:51 AM
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OLD_SLOW and in the WAY
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Default twin terror


all i know about this engine is that a guy named Frank Giannini from new jersey builds these ...


Old 10-09-2009, 08:05 AM
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Default RE: twin terror

Interesting



Old 10-09-2009, 08:16 AM
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Default RE: twin terror

cool.
any more info on them?
i do see the positive gains from a twin engine,but unless really built really well it wouldnt have any gains over the single cylinder.

man that would sound amazing though.

are they proper funcional engines,any bhp info?
Old 10-09-2009, 08:29 AM
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Default RE: twin terror

Here's the website.

[link=http://www.gianniniracing.com/]Click me. Do it. Go on... Ah go on.[/link]



Doesn't give much info though
Old 10-09-2009, 09:36 AM
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Default RE: twin terror

I know the large scale boat maker Bonzai uses twin cylinder engines in some of there boats.
Old 10-09-2009, 01:18 PM
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Default RE: twin terror

the boat guys have been doing it for years thye do up to 4 cly ones
Old 10-09-2009, 01:37 PM
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Default RE: twin terror

Yeah Bentley your right heres a link to one:
http://cgi.ebay.co.uk/ZENOAH-INLINE-...d=p3286.c0.m14
thanks
Guy
Old 10-09-2009, 01:42 PM
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Default RE: twin terror

this is the guy for mulit cylinder engines. These things are animals!!!!

http://www.quickdrawengines.com/Page_12.html
Old 10-09-2009, 07:05 PM
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Default RE: twin terror

What's next?
2-stroke V-motors?


Probably exists already doesn't it?



Old 10-10-2009, 06:07 AM
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Default RE: twin terror

Nice looking engine. I see that the 2 cylinders are on a different stroke as well which was going to be one of my questions. The possibilities would be endless with an engine like that. I see 12HP in the future with one of those
Old 10-10-2009, 09:57 AM
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Default RE: twin terror

what i would like to see is an inline 4 4stroke big bang motor about 100cc...I'm a huge motogp addict and yamaha getting 240HP out of an 880, with the torque of a V config and have it ultra reliable is an engineering marvel
I was fantasizing about a twin 2 stroke for my upcoming formula offroad jeep tube chassis build but a big bang inline 4 would be the ticket....i can only dream of an engine like that and of course winning the lottery so i could afford one
Old 10-10-2009, 10:32 AM
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Default RE: twin terror

forget about that engine in an r/c offroad anyway as its far too big.......
my fg beetle i had to invest huge money for it to cope with over 7hp.i had to convert it to complete elcon alloy to handle this power....

say if that twin was pumping out in excess of 10bhp imagine the parts that would be needed for it in order for chassis to cope

i think the only way that would work is in a quad chassis,small quad,even then size is gone too big so it would still be too awkward and slow..........would be just no good cause of size.

engine like this in my opinion is too big for any offroad r/c.....

just for boats i think and maybe 1/4 scale.

even i saw some 1/4scales in action and they are too big i think....

imagine if one of them hit somebody.......bye bye house

damm sweet though...
Old 10-10-2009, 07:08 PM
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Default RE: twin terror


ORIGINAL: quarterscalelegends

this is the guy for mulit cylinder engines. These things are animals!!!!

http://www.quickdrawengines.com/Page_12.html
Now that is a nicely designed and integrated multi-cylinder engine with each cylinder with their own crank case volumes.

I guess the only thing that might top one of these are the Conley engines.
Old 10-10-2009, 07:55 PM
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Default RE: twin terror

In that picture though where the pistons are not in the same firing position....
...how would that work?

Two ignition coils?


[EDIT]

Looked again.
There seems to be one down the bottom too?






Old 10-10-2009, 08:49 PM
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Default RE: twin terror

For the sake of balance, especially considering harmonics caused by the geometries of the parts and their relative centers of masses, they would not all fire at the same time. The cranks would be coupled together such that each cylinder is phased by 45degrees, so that you have one fire at the 12oclock position, the next at the 3oclock position, the 3rd at the 6oclock, and of course the last at the 9 oclock position.

If they all fired at the 12oclock position, the engine would cause one heck of a vibration, and also, possibly more undue stresses that would at the very least add to the wear and materials stress fatigue of the engine.

As for ignition timing so that the 4 different firing positions, I want to see the other side of the engine. I suspect that there is a mechanical ignition distributor on both ends of the engine to discharge the stored electrical energy of the coils you can see on the front and the back of the engine.
I am thinking of a mechanical ignition distributor like you would see in a full sized car.
Old 10-10-2009, 08:52 PM
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Default RE: twin terror

Also, In looking at the pic, I see what you mean by the flywheel possibly having two permanent magnets. But I doubt that these two magnets directly fire the plugs, because this engine has coils; the magnets only supply electrical energy to be stored into the coils so that the coils would fire the plugs at the proper time.
Old 10-11-2009, 04:44 AM
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Default RE: twin terror

It almost looks like there might be another coil on the bottom of the motor on the same side the flywheel is on. Its hard to tell from that one pic but you can see the coil wire from the second motor come down at the bottom of the pic and looks as if it attached to the bottom. I showed this pic to my machine guy and all he can say was WOW. But when he says WOW, it really means "Im going to try that". I just dont think he thought about the firing.

Another thing I noticed in that picture that caught my attention was the picture on his shirt. That as well made me say WOW.
Old 10-11-2009, 05:43 AM
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Default RE: twin terror

It almost looks like there might be another coil on the bottom of the motor on the same side the flywheel is on. Its hard to tell from that one pic but you can see the coil wire from the second motor come down at the bottom of the pic and looks as if it attached to the bottom.
Most definitely.


I'd love to hear that motor screaming away at full revs.



Old 10-11-2009, 07:26 PM
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Default RE: twin terror


ORIGINAL: Dirty_Vinylpusher

It almost looks like there might be another coil on the bottom of the motor on the same side the flywheel is on. Its hard to tell from that one pic but you can see the coil wire from the second motor come down at the bottom of the pic and looks as if it attached to the bottom.
Most definitely.


I'd love to hear that motor screaming away at full revs.



I wonder if if would sound something like this?
http://www.youtube.com/watch?v=g1ICvkZLSdA

Old 10-11-2009, 07:36 PM
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Default RE: twin terror

LOL, hell yeah, that is what I'm talking about!

It's almost as if there is not enough pond for that boat!
Old 10-11-2009, 07:41 PM
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Default RE: twin terror




WAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Old 10-18-2009, 02:43 PM
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Default RE: twin terror

Heres a motor builder who does 1, 2, 3, and 4 cyl zens. Prices are as scary as the motors. http://www.matho-powertrain.de/index_en.html




Theres a clip or two of the 4 banger running on youtube though I cannot put my finger on it.


Boaters have been running adapter kits for zens for around 3 years and companies like MHZ have offered modified crank/crankcase twins for a little longer.
http://imageevent.com/justaddwata/mo...=0&w=4&s=0&z=4

Old 10-18-2009, 02:46 PM
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Default RE: twin terror

wow thats crazy....

could one of these be modified in to a largescale car i wonder?

i suppose the drivetrain would want to be made out of gold lol
Old 10-18-2009, 06:35 PM
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Default RE: twin terror

It can, but I hate to say that it would be much too big for most gasser cars and trucks.
Now, for a custom rig? No problem at all. Or to make like a big rig truck and slip this monster in between two chassis rails? Yeah! and that would be awsome to have 10WD.
Old 10-19-2009, 01:46 AM
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Default RE: twin terror

10WD?

I think a small part of my brain just exploded.




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