Home › Forums › Free Flight › The Engine Shop › A new designed engine?
- This topic has 8 replies, 4 voices, and was last updated 14 years, 2 months ago by Anonymous.
01/06/2009 at 3:06 am #41039
I have been doing some screwing around with my newest CAD program and decided that designing an engine would press my skills some. So, I came up with a neat looking design. Now, if I ever make it…..This particluar one is a .15, with some Rossi, Verbitsky, and Nelson ideas all thrown in. Right now it is just something to screw with in cyberspace….
01/07/2009 at 12:18 am #46853RANDALL RYANParticipant
Whats the software John?01/07/2009 at 2:05 am #46854
It was done in Solidworks…I have done twenty years of ACAD as well as ComputerVision and then recently did Solidedge. We converted our small group at work over to SW and I have a fellow engineer that is quite good at it. So, I am trying to get caught up…01/07/2009 at 2:49 am #46855RANDALL RYANParticipant
I thought I recognized the graphics. SW is a great program for model engines, but limited as complexity increases. I’ve used it along with UG, Pro-E and Autocad over the years.
Here are a few Jpegs of a twin stack .65 I was working on as a stunt engine. Its based on a casting made by Andrew Coholic. I abandoned it for a more practical rear exhaust layout that now languishes in cyberspace.
01/07/2009 at 4:38 am #46856
That is one longgggg crankshaft…It is fun to do the designing with the software- Just harder to bits into chips..Once you look at some of the drawings it can be pretty easy to tell what software was used- alotta times just the background gives it away.01/07/2009 at 12:42 pm #46857Ed HardinParticipant
We used ProEngineer where I worked before retiring last September. I remember during the training sessions several years back the manuals used a model airplane engine for part design and assembly training.
John, will you be able to download the software to a CNC machine for fabrication? I have done drafting and mechanical design work for 40 plus years, and the solid modeling is the greatest, almost makes going to work fun.
Ed01/07/2009 at 2:42 pm #46858AnonymousInactive
I used SolidWorks for 6 years prior to retiring. I plan to do some more model design with SolidWorks. I have done designs where the files were sent to a local shop, and they sent back solid models, the actual part, the next day. Also sent files to tool and die makers, and they did not even look at drawings, just made the molds, and manufactured the parts in quantity.
I helped Kalmykov design the spinner for the 1 cc Cyclon using SolidWorks, and was able to send the design to him in Siberia so he could produce them.
Kalmykov has of course the #1 F1J and 1/2A engine in the world, and probably the best 2.5cc, .15, size engine in the world. It is a drop in to a beam mount for the Nelson 15, but did not catch on because it did not have the right backplate threadform. Most of the Nelsons were being mounted by screwing the engine into the motor pan.
So here are a few of the real life models of the engine, which out turns the Nelson by about 2,000 rpm on the same prop. One test prop typically turning 30,000 on a good Nelson, turned over 32,000 on the Cyclon.
I purchased two of the 2.5s, and sold them, they were direct drive versions of no interest to the F1C flyers. If someone has any interest in these engines for class A gas, I could order some more.
The interesting thing was that not only more powerful, but lighter than the Nelson. It weights 4.5 ounces with spinner and glowplug.
01/07/2009 at 2:47 pm #46859AnonymousInactive
Here is the spinner.
01/07/2009 at 2:52 pm #46860AnonymousInactive
Should have attached this with the last post, sorry.
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