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 Reed Valve 125s

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john bass

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Number of posts : 1712
Age : 88
Localisation : Bensberg, Germany
Registration date : 2006-12-06

PostSubject: California too...   Sun Apr 29, 2012 4:24 am

We thought Chicago wonderful. Robert Bosch, Chicago were developing the pump & injectors for our V8 diesel in Montreal. We spent a lot of time visiting lake Michigan beaches ...

California too, Derek. Mostly with American military -- great fun, some wonderful people but the awful ones were really awful. Some good mechanics and some really awfully awful ones too.

But back to Bantams -- if that was your Bantam, the one displaying the Union Jack then it has an external flywheel -- which fact you never revealed when the subject was being discussed... Quite a thick and solid looking thing -- must be affecting the acceleration etc... etc... ???

Cheers!
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Derek

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Number of posts : 1065
Age : 56
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Registration date : 2007-06-15

PostSubject: Re: Reed Valve 125s   Sun Apr 29, 2012 9:17 pm

Hi John lot of history in this one but here goes -

We do actually intend to get rid of the ignition flywheel,but perhapps for next year, I have tried it with my newset up but, I had a few isssues trying something eslethat allows me to get rid of the rotor.

regds Derek


Last edited by bettsd on Wed May 02, 2012 7:40 am; edited 1 time in total
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john bass

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PostSubject: Yes...   Sun Apr 29, 2012 10:08 pm

Yes, Derek ... such memories can be vividly clear to last a lifetime -- mine too!

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Edward Pickering

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PostSubject: Re: Reed Valve 125s   Wed May 02, 2012 1:04 am

Courtesy & Property Of Trevor Amos.

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Trevor Amos



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PostSubject: Re: Reed Valve 125s   Wed May 02, 2012 2:24 am

Well John ,
You did enquire as to what actually happened to reeds during running , so i did the above graph to illustrate both the bottom
end of a power band and the peak . When plotted against a conventional piston engine the differences are quite clear , as indeed
are the differences at the varying rpm levels . Bear in mind of course , that the piston port is symetrical , and constant , irrepective
of rpm demands and engine needs !

See what you think , have fun , Trevor
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john bass

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Number of posts : 1712
Age : 88
Localisation : Bensberg, Germany
Registration date : 2006-12-06

PostSubject: Thanks Trevor...   Wed May 02, 2012 6:06 am

Thanks Trevor -- but it is still magic to me: the reeds flapping at speeds less than a quarter of 0.007 to a quarter of 0.0046 of a second. Phwew! Thatīs 1.8 to 2.3 times as fast as a Hummingbird flaps its wings.

Magic -- its magic I tellyer!!


Cheers!
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