lohmann diesel moped

Anyone familiar with these beasties? Odd objects, possibly German and
designed around 1949 by a H. Tegen. Fastened to bicycles below the
crank and provided minimal power, a "helper" system. Also seems to
have been a very long stroke twin version that attached to the crank -
two stroke diesel also, abou the same vintage and possibly Heinkel
mfg.

Cheers!
Dave G.

 

<googles>

Ah, an overgrown model aeroplane engine.

So I guess that it had a carb, not a bloody tiny injector.

Interesting, though.

 

A more modern ( but only just ) version of the engine.

http://www.practicafoundation.nl/products/under-development/micro-diesel.html

 

Yes, I've got one.

 

That's right... if you can call it a carb. There's no float chamber;
the fuel line plumbs straight into the jet. So I suppose you could call
it an injector in a Wal Phillips stylee, but no, it's not a proper
Diesel injector.

 

Sounds *exactly* like a model aero engine.

 

now why does that not surprise me?

are there any SOMopeds you *haven't* got?

BTW, came across something about the Nuvinci CVT pushbike hub. I'm thinking
of getting one and hopefully selling 'em. recall reading about the project
a year or so ago - it's not a new concept, it's the execution that's
different, instead of friction drive it has special fluid that goes solid
under pressure (similar to the stuff in viscous diffs, I imagine) which
provides the grip, so presumably the problems of components wearing and thus
slipping are reduced, maybe to zero.

 

Oh yes, lots...

Coo, can you run it on custard then?

 

hehe. google for Nuvinci, you'll find various info about it.

 

Heh! Do you run it? and if so, on what? 18cc seems iffy, but from
what I have found they seem to work/help, though not "true" diesels
and performance seems to be pretty tied to fuel and ambient temps too.
Pretty interesting little motors in their way!
The small "updated" pump motor on the practica site sounds nuts,
must 1 Kg of motor and 14 of transmission.

Cheers & thanks for the replies!
Dave G.

 

Paraffin and two-stroke oil. Some people use weird concoctions but
paraffin works for me.

They seem to have a speed they're happy running at (somewhere around
14mph but dependent on what fuel your using) and the trick is to keep it
at that speed. At the merest hint of a hill, start pedalling lightly to
keep it at its favourite speed. I've fitted mine with a
"Lohmann-freilaufschaltung", which means I can reduce the roller
pressure in dry conditions and waste less of its meagre power on
squashing the tyre.

There's a photo of mine on
http://www.users.globalnet.co.uk/~pattle/nacc/gallery/plo1.html
It's the one at the top.

 

Umm.

'Error 404: page not found'

 

Christ on a bike - the writer's grasp on post-war Britain (not England)
is tenuous, and his understanding of diesel combustion is severely
flawed.

 

I had a problem with the link, but that is OK! Otherwise I would
never have searched the moped site and found the "Astounding" Lohmann
Marine Attachment!
Makes me wonder what else is out there, a Lohmann "helper prop" for
hang gliders? Did Lohmann have an Italian division producing an Auto
called a Cyclops? </snark>
Found the bike/lohmann too I think (1951 downtube type?).
Thanks for the replies. The upshot of these questions is that I have
found a Lohmann in a box (apart, so some things are sure to be broken/
missing).
I have decided to go ahead and buy it, though I know better, it's
cheap and at least won't take up much room!

Cheers!
Dave G.

 

Me, you mean? No such excuses, I'm afraid.

 

first find yer TVO. I gather that paraffin and petrol mixed about 4:1 or
5:1 works quite well.