Ellery V-Twin 100cc Design & Build

[cbooth]

Hi all,
Thought I would put progress to date of my own design engine V-Twin, all things going well she will be used for an RC plane I am building.
The engine specs so far are:
Type: V-Twin gas
Capacity: 100cc (2 x 50cc)
Stroke: 3.9cm
Bore: 4.0cm
Compression Ratio: 8.5
Ignition: Spark

I've been designing it in Autodesk Inventor which makes it really easy to take of plans and dimensions.

 

[cbooth]

I've been working on this off and on for about 6 months now and have most of the main casing elements done.

 

[cbooth]

a few bits of it anodised

 

[cbooth]

 

[WOB]

Looks good, but I'm curious why you picked a 90 deg. twin instead of a 180 deg. twin considering that the vibration of the 90 will be considerable and the 180 would be zero( assuming a 180 deg. crank)?

 

[cbooth]

Looks good, but I'm curious why you picked a 90 deg. twin instead of a 180 deg. twin considering that the vibration of the 90 will be considerable and the 180 would be zero( assuming a 180 deg. crank)?

It's 90° V so technically has perfect primary balance, aka Ducati. Also I wanted a V to suit my plane design. The heads will stick out of the cowling.

 

[awake]

Beautiful work! I'm curious about the needle bearing in the rod - what type (number) of bearing is it?

 

[cbooth]

Beautiful work! I'm curious about the needle bearing in the rod - what type (number) of bearing is it?

Thanks Andy, they are HK1010 Drawn Cup Needle Bearings

 

[Sprocket]

What is it going to power? 100 cc? That's like a small motorcycle engine!

 

[bruski]

That engine and your skills are perfect. If you should put together a drawing package, I would like to purchase a set from you. Great work!
Thanks,
Bruski

 

[cbooth]

What is it going to power? 100 cc? That's like a small motorcycle engine!

my version of the Riley Model B. 100" wingspan

 

[cbooth]

That engine and your skills are perfect. If you should put together a drawing package, I would like to purchase a set from you. Great work!
Thanks,
Bruski

Thanks Bruski. Plans are pretty much finished, but wouldn't like to release until I have finished mine and get it running. I occasionally find bits when I am machining that I need to make alterations to on the drawings.

 

[awake]

Thanks Andy, they are HK1010 Drawn Cup Needle Bearings

Thanks!

I think I recognize the pilot in the airplane - that's "Mini-me," isn't it? (From the otherwise forgettable Austin Powers movies.)

 

[cbooth]

Thanks!

I think I recognize the pilot in the airplane - that's "Mini-me," isn't it? (From the otherwise forgettable Austin Powers movies.)

close, it's actually Bruce Willis. I downloaded the file and 3D printed him

 

[awake]

Hmm ... I'm trying to think if I've ever seen Bruce Willis in a movie where he is in a plane like this ...

 

[cbooth]

today I got the rear crank done. Found it really difficult to get a good finish on the EN16

Also got the first piston sleeve done from Cast Iron, much easier to machine. Made an error by rushing and gouged a mark withdrawing the work piece. Fortunately it'll be well below the piston rings so should not affect anything.

 

[a41capt]

This is beautiful workmanship! Both engine and airplane are exquisitely executed.

100cc? FYI, I took a 3rd place in my first motorcycle race in 1967 on a 60cc bike. I would’ve loved to have had those extra 40cc, not to mention having them in a V-Twin configuration!

You sir, are an artist!

John W

 

[Peter Vivian]

Amazing work and I'm loving the 'plane, just back into aeromodelling after a 45 year gap!

 

[bluejets]

Found it really difficult to get a good finish on the EN16

Have you tried a vertical sheer bit approach..??
Link.............
Vertical Shear Bit

 

[bhouin]

Great stuff here. Just curious did you draw your on plans for the plane?