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how makes the largest gas engines?

Old 01-04-2008, 03:14 PM
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grant-RCU
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Default how makes the largest gas engines?

I know ZDZ has the big 400cc 4 cylinder. Are there any other gas engines out there in the 300cc and up range?
Old 01-04-2008, 04:15 PM
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andy86na
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Default RE: how makes the largest gas engines?

3W makes engines up to 684cc. I believe EVo has 300cc engine also. They are out there.
Old 01-04-2008, 05:23 PM
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Tired Old Man
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Default RE: how makes the largest gas engines?

If you need really big, Moto Guzzi makes a fine engine for some planes. There's a few snowmobile engines out there adapted for the purpose as well. Look hard enough you'll find a couple of diesels as well.
Old 01-04-2008, 05:40 PM
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Al Lewis
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Default RE: how makes the largest gas engines?

Hey Pat, maybe I should look into one of those for the ultra-lite I'm looking at. Lil Hustler!!
Old 01-04-2008, 05:51 PM
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grant-RCU
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Default RE: how makes the largest gas engines?

Nano light trike is what I have in mind for one. need at least 400CC or 28hp
Old 01-04-2008, 06:04 PM
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Al Lewis
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Default RE: how makes the largest gas engines?

I believe that's a hang glider??? Dead man's sport IMO. Take a look at the Lil Hustler and Lil Buzzard Ultra-Lite. You'll change your mind if you haven't bought already. http://www.ultralightnews.com/classi...ilhustler.html Needs 80-120 hp though.
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Old 01-04-2008, 06:37 PM
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pe reivers
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Default RE: how makes the largest gas engines?

3W makes big multi cylinders as well, and so does Norton, Seidel and Moki.
I happen to have a few big 420 ZDZ's on the shelf. NIB they will go for any reasonable price.
Old 01-04-2008, 08:56 PM
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grant-RCU
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Default RE: how makes the largest gas engines?

Dead mans sport? Yes it is a type of hanglider wing. Its actually a trike wing which is designed for power flight and soaring on a nanolight. From my understanding they are safe. It only flys about 45mph top and stalls in the low 20s.
I have flown in Gyrocopters, Helicopters, fixed wings, powered parachutes and Trikes. I like them all except the helicopter. Gyrocopters and helicopters are the least safe. Bottom line is flying is a dangerous sport no matter what you fly.

I am not sure why you think trikes are unsafe. There easier to fly that fixed wing since they are 2 axis. They can handle a crosswind as good as a fixed wing. They are virturally spin proof. Stalls are mushy and quick to recover from. The wings have a lot of washout and reflex to make them stable. A light loaded wing like a nano will give you a work out in turblence but it can and will handle it fine.
If a trike is flown outside of its limits it becomes dangerous like any other plane flown outside the limits.

I have a fixed wing Kolb Mark III. Kolbs are great aircraft as well.
Here is the one I like http://www.flyhardtrikes.com/skycycle.php

http://www.youtube.com/watch?v=PoOFMFz7I5U
http://www.youtube.com/watch?v=03Jl60hZylg
http://www.youtube.com/watch?v=VIao-eIyFxQ
and check out this guys videos http://www.youtube.com/profile?user=wrdturkey
Old 01-04-2008, 08:59 PM
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Default RE: how makes the largest gas engines?

I think the time has come when there are few, if any, gaps in aviation between 1oz, .69c rubber-band wind ups and million pound AB 380s. There was a time in modeling when we considered .20, .40 and .60 airplanes. There was small airplanes, medium airplanes and the monster of them all, a .60. After that there was light civil aircraft such as the 152 or Cub. Clearly that time has passed.

Today I couldn't define where 200lb models stop and 200 ultralights begin.

What makes a 70cc dirt bike engine for my kids different from a 70cc 3W? We race 125cc 2C motorcycles and fly 170cc acro airplanes.

3W makes engines bigger than the smallest Rotacs. The smaller Ultralights are smaller than the largest models.

I think your question is a little lost in a more complex world.

Bill
Old 01-04-2008, 09:19 PM
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skiman762
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Default RE: how makes the largest gas engines?

every now and then a new in the crate Merlin 1650 cu in comes up for sale
27000cc is in the 300 cc and up range
Old 01-04-2008, 09:47 PM
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Al Lewis
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Default RE: how makes the largest gas engines?

I just remember the old days of hang gliding. Guess I haven't kept up with it much. Use to be said that nobody lasts for long in hang gliding because the first few times they push the limits are usually the last. With 22 years in the Air Force I'm well aware of the dangers of flight. Just like my chances better in a fixed rigid wing.
Old 01-04-2008, 09:57 PM
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Default RE: how makes the largest gas engines?

Stall speed is best crash speed. Somewhere under 30 sounds about survivable.
Old 01-05-2008, 12:16 AM
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Default RE: how makes the largest gas engines?

Al
FLYING is very safe
it's when the plane quits FLYING not due to a good landing that things starts to get hairy
Old 01-05-2008, 06:11 AM
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Default RE: how makes the largest gas engines?

Falling or crashing has never killed anyone, except from fright. It's the sudden stops and impacting various objects at the end that do it every time.
Old 01-05-2008, 12:01 PM
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Default RE: how makes the largest gas engines?

Remembering the old days of hang gliding ('60s and '70s) and basing ones opinion of safety and performance on that, is like doing the same for GA on the first 30 years of general aviation. There is no doubt that a hang glider wing (flex wing) has lower performance than a rigid wing, but it is certainly safe. I was an avid hang glider pilot from late ā€˜80s to ā€™96, flew every single weekend (when possible), achieved XC flights of 135 miles, reached altitudes of 17,300ā€™, survived a little aerobatics and other stupid decisions.
If I were you, Iā€™d take a look at the 280-290cc Herbrandson engines race44 sells, particularly this one: [link]http://www.rcuniverse.com/market/item.cfm?itemId=343478[/link]. With a reduction gear and a large prop it should give you the thrust needed.
Old 01-05-2008, 12:36 PM
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Default RE: how makes the largest gas engines?

WOW! Lifetime warranty on that Herby engine. Now there's a man who has confidence in his product.
Old 01-09-2008, 10:09 AM
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grant-RCU
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Default RE: how makes the largest gas engines?

Here is a plane on Ebay with 2 3w twins on it.
http://cgi.ebay.com/ebaymotors/Cri-C...em220188534983

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