Let's Talk Cyclecars

Looks like the Hulot car.

 

I've used Avon Gangsters (rears) on my Avion reverse trike for 15 years. Never a problem.

 

salmson.Isabelle pic...

 

Geo Hamm artwork via Isabelle.

 

Darmont via Aldo

 

We've seen this car before. Le Dauphin. Marc pics...

 

J.J. pic... just goes to show you don't need the newest ,stickiest tire on asphalt to lift a wheel on a Morgan!

 

BSA YW21 for sale in New Zealand at the moment. Not a bad price either - I must say I was rather tempted

 

The rear of Stu Hillborns car?

 

One of my all time favorite cars. Was at GNRS last weekend. Hope they cleaned the drool off of it, sorry.

 

Here is Gasballon's picture of ADE and his JAPPIC recreation.

 

At 16K I'd say that was a steal.

 

yes and that's 16k NZ dollars which is about the price of a big mac in the US.

 

Darmont. G.L. pic...

 

Love the bonnet louvres on this car everyone a different size and on the curved part of the bonnet , great work

 

Zundapp J****
http://microcarmuseum.com/tour/zundapp-j****.html

 

Zundap J**** seating demonstration:

 

Any frontal views of this one?

 

Here you go Murphy...

http://thersic.com/wordpress/wordpress/?p=6504

 

What a bizarre engine. A balancer's nightmare. Two rods on one side and a single rod on the other. Special pistons and rods not interchangeable. I guess it was just to eliminate the offset. Wow, always amazed at what people come up with.

 

amazing..<object width="1" height="1" cl***id="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0"><param name="undefined" value="http://lovesmileys.com/f2/3/swatch_white.swf" /><param name="allowScriptAccess" value="always" /><param name="src" value="http://lovesmileys.com/f2/3/swatch_white.swf" /><param name="allowscriptaccess" value="always" /><embed width="1" height="1" type="application/x-shockwave-flash" src="http://lovesmileys.com/f2/3/swatch_white.swf" undefined="http://lovesmileys.com/f2/3/swatch_white.swf" allowScriptAccess="always" allowscriptaccess="always" /></object>

 

Thanks Bob! That engine design would eliminate the rocking couple.

 

Sorry to say but it couldn't possibly work as drawn as the two conrods would strike the lower edge of the barrel as shown in the diagram. You would need to interpose a crosshead like they have on steam engines...

A better arrangement was devised by George Lanchester who used two crankshafts and six conrods on a horizontally opposed engine to make a vibrationless car engine in the late 1890s... No primary or secondary imbalances and no rocking couples either, but expensive to make of course, hence it didn't last...

Marticelli

 

I took that photo - there's quite a few more here…
http://www.flickr.com/photos/stefanmarjoram/sets/72157626672284373/

 

Beautiful set of pictures and drawings Stefan.

 

Visited Adrian at the weekend and got to see his fabulous progress on the Jappic&#8230;

JAP-9490 by Stefan Marjoram, on Flickr

JAP-9480 by Stefan Marjoram, on Flickr

JAP-9487 by Stefan Marjoram, on Flickr

 

A simpler approach would be two crankshafts with one conrod each. Regardless of whether they spin in the same direction or opposite directions, most vibration can be eliminated with a bit of counterweighting.

 

Sorry but they don't hit the cyl. wall. This design would work fine. Try drawing it up and you will see.

 

Since that is the engine in the Mathis, I presume it runs and nothing hits.

 

What about providing some dimensions (bore and stroke as well as conrod length for a start). In most conventional engines the conrod just clears the crankcase mouth when the rod/crank angle is 90 degrees where the rod is acting on the plane of the diameter of the bore.

The twin rods are acting out on a minor chord of the bore which is perhaps 50 or 60 per cent of the diameter, so its hard to see how they could possibly clear the crankcase mouth or the bore unless this is extensively cut away. Perhaps the drawing is just an indication of the arrangement rather than an accurate representation.

I remain sceptical!

Marticelli