Henk,
You must have an older bobbin then my "old" bobbin. The one I have does
not have a bolt, it is quick release and a pleasure to use.
You explained the flip-flop like it should be said. It is the spool on
the auto hub that might have to be flippid.
The old spools I have will not fit the new auto hub and the new spools
are too loose on the old auto hub. I have to keep them separated so I
don't put the wrong color thread on the spool I don't intend to use.
I asked Norm is he might still have any old hubs around, I would be more
than glad to buy them. He had none at all.
On the three new bobbins I have, the weight of the loaded bobbin will
extend the thread at least 14 to 18" before it will stop. I tried the
wraps around the legs, still too much thread has to be pulled out to pre
load. Keeping the spool pre loaded by not letting the thread retract
seems to work the best for me. I have it down pat now and don't worry
about it anymore. This does not make it handy to use with a standard vise.
Tony
Henk Verhaar wrote:
On 31 Oct, 2005, at 23:11, Larry Johnson wrote:
Flip-flop the spool in the bobbin. It is spring-loaded, but only
works one direction. See if that will cause it give you the
automatic feature you are looking for...
Flipping the spool in the bobbin won't work, you need to flip the
outer spool on the auto-hub if the thread is wound the wrong way.
However, I suspect that what he meant was not that the spool rotated
the wrong way, but rather that the hub doesn't have enough tension to
stay put. This is a feature (I would say a major flaw) of the new
Norbobbins (the ones with quick release hubs). The old ones (with a
bolt locking the hub in the frame) have adequate tension. Norm sez
that he deliberately designed the new ones with less tension, because
he had so many hubs returned with broken springs. A workaround, which
Norm suggest himself also, with the new bobbins is to wrap the thread
once or twice around one of the legs of the frame. Still doesn't make
the thing work like the old ones, but it will usually stay put.
I've since moved on to an Ekich automatic bobbin -- takes standard
spools and works beautifully.
CHeers
Henk
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| Dr. Henk J.M. Verhaar | e-mail:
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| Ecotoxicoloog en vliegbinder | tel: 035 656
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| NL-1244 PK Ankeveen | web: www.xs4all.nl/
~flyrod |
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