Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
Offline
-
Hey Guest!
British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!**Upgrade Now**
(PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Aviation
- Thread starter donbmw
- Start date
Share this page
Offline
That is really cool.
Online
Can't wait to see it fly... wonder if the pilot needs a multi engine rating to fly it?
aeronca65t
Great Pumpkin
Offline
That is knock-your-socks-off cool!
BustedKnuckles
Jedi Knight
Offline
The construction photos are mind blowing. I'm going to dedicate a whole day to go through those albums slowly!
Offline
Quite an accomplishment to say the least. I'm wondering what those engines are? At first I thought they were the later Rotax engines, but I don't think so. They have an odd head position on them which should make them easy to identify, but I don't have them in my list of engines. PJ
Online
This is what I found regarding the engines:
The engines are the Hirth 3002 4-cylinder 2-stroke that usually have a reduction unit and make about 80hp. Jack chose this engine because of its size... it was small enough to fit inside a properly scaled nacelle. However, to make it fit properly, the reduction unit is removed which will bring the power down around 60hp each, with the engines spinning the 46.4" diameter props at about 3,300 rpm.
The engines are the Hirth 3002 4-cylinder 2-stroke that usually have a reduction unit and make about 80hp. Jack chose this engine because of its size... it was small enough to fit inside a properly scaled nacelle. However, to make it fit properly, the reduction unit is removed which will bring the power down around 60hp each, with the engines spinning the 46.4" diameter props at about 3,300 rpm.
That reminds me of this plane -- a 3/8th scale PBM Mariner that the Martin company built as a scale prototype:
Tadpole Clipper by onyxsax, on Flickr
The "Tadpole Clipper" as it was called is amazingly still extant. It was restored by a group of former Martin employees and is now on display at the Baltimore Museum of Industry. IIRC, it is powered by an inverted Chevrolet engine (it was the only way it could fit) which turned the two props. One of the guys who currently works up at Jack Kosko's hangar in Fawn Grove, PA was one of the guys who helped restore the plane.
Tadpole Clipper by onyxsax, on Flickr
The "Tadpole Clipper" as it was called is amazingly still extant. It was restored by a group of former Martin employees and is now on display at the Baltimore Museum of Industry. IIRC, it is powered by an inverted Chevrolet engine (it was the only way it could fit) which turned the two props. One of the guys who currently works up at Jack Kosko's hangar in Fawn Grove, PA was one of the guys who helped restore the plane.