Small Engine Museum

http://www.craftsmanshipmuseum.com/images/Knapp130a.jpg

TD boat engine

a free flight boat.

PV Pilot wrote:a free flight boat.

lol most likely tether boat.

I liked this one quite a bit. It was .010 powered

Babcock Jr. Gas Powered Micro Rail Mite Racer.

cribbs74 wrote:I liked this one quite a bit. It was .010 powered

Babcock Jr. Gas Powered Micro Rail Mite Racer.

Thats a nice one and I think I have a kit for the body of it somewhere.....

That .010/.020 is so lovely!

I like the Twin Black Widow QRC

WingingIt74 wrote:I like the Twin Black Widow QRC

Same but I have a thing for the small engines!

nitroairplane wrote:

cribbs74 wrote:I liked this one quite a bit. It was .010 powered

Babcock Jr. Gas Powered Micro Rail Mite Racer.

Thats a nice one and I think I have a kit for the body of it somewhere.....

Really? an aluminum body? cool, you ought to build it. After the 'roaring 20 though......

cribbs74 wrote:

nitroairplane wrote:

cribbs74 wrote:I liked this one quite a bit. It was .010 powered

Babcock Jr. Gas Powered Micro Rail Mite Racer.

Thats a nice one and I think I have a kit for the body of it somewhere.....

Really? an aluminum body? cool, you ought to build it. After the 'roaring 20 though......

lol I do not have the skill!
I just checked it is not that it is actually for a 4" mini dooling frog tether car.
I may build it one day it is just an aluminium casting.
Indra

hope one day it will look like that!

please can you send me the plans for the geard twin!!!!!!

cox24711 wrote:please can you send me the plans for the geard twin!!!!!!

You'd have to track down the gentleman who built it...

cox24711 wrote:please can you send me the plans for the geard twin!!!!!!

Info on the craftsman that built them

That might be the first, but the gearing, bearings, and shafts can be purchased off the shelf from any number of supply houses, and the rest of the system is pretty easy to fabricate.

Phil

Most of these converted "Cox" multi's that were made, suffer from being too heavy for practical model airplane use. They're beautiful examples of precision machining, but the gears, shafts and support bearings add a LOT of weight.. not to mention the added rotational weight and drag induced by the gears meshing. These engines in singe-cylinder form were designed to do their job at 17K+ rpm's... Gearing 2 together will decrease this number dramatically, and I would imagine it would also wear out the piston/cylinder fit prematurely because of the extra drag induced. The air/fuel mixture and quantity to each cylinder also has to be equalized.

Jason just bought a geared Cox .049 twin reedie. It's beautiful. It came with a pair of 80 TPI NVA's. I suggested replacing them with 124TPI fine-thread NVA's to make it easier to synchronize the 2 cylinders, if he decides to run it.

We have a expo show that my son and I attend known as Cabin Fever. Usually held in January this year it's held in April. Looking through some of the video above I came across this video on You Tube. I witnessed this fellow run all of the engine's he had on his table. The Harley Panhead was over the top cool. I believe he told me his father had built these running models. The sound they made just put a smile on your face. https://www.youtube.com/watch?v=GGXHMAic2O4 Ken

That mini Harley is pretty cool, sure would like to have one.

I probably would have killed for that V8 when I was a kid. Very nice little engines!