guys ,
I'm working on a carriage here .. made out of a 6MM aluminum sheet .
start looking good already .
I'm going for a straight armwand , so I can swap other wands of different
materials in the furture . just to figure what suits my taste .
What lenght I should use ?? I have been reading the thread through
but couldn't get it clear for myself 🙄
TIA ,
Paul
I'm working on a carriage here .. made out of a 6MM aluminum sheet .
start looking good already .
I'm going for a straight armwand , so I can swap other wands of different
materials in the furture . just to figure what suits my taste .
What lenght I should use ?? I have been reading the thread through
but couldn't get it clear for myself 🙄
TIA ,
Paul
armwand material
I have several options for armwand material :
1- 6MM solid glas rod .
2- 6MM solid brass rod .
3- 6MM brass tube .
I need to source graphite rod ( carbon ) .
another option of course is a wooden rod , or partialy wood
etc. etc .
the easy starter would be the 6MM solid glas wand .
can someone please put me on the right track 😉
I believe I have been reading that the carbon and glas wand are to
be prefered . is that correct ?
I have several options for armwand material :
1- 6MM solid glas rod .
2- 6MM solid brass rod .
3- 6MM brass tube .
I need to source graphite rod ( carbon ) .
another option of course is a wooden rod , or partialy wood
etc. etc .
the easy starter would be the 6MM solid glas wand .
can someone please put me on the right track 😉
I believe I have been reading that the carbon and glas wand are to
be prefered . is that correct ?
Paul,
Solid glass will be too heavy, glass tube will be better. Try to aim for material that is rigid and with a weight no greater than 0.75g per inch.
Colin
Solid glass will be too heavy, glass tube will be better. Try to aim for material that is rigid and with a weight no greater than 0.75g per inch.
Colin
You would rather carbon or aluminium tube for that purpose.
The entire carriage must be as light as possible.
All must be light.
The entire carriage must be as light as possible.
All must be light.
I have an old ERA 444, a French turntable, with a partialy bended armwand.
It is a H shaped piece of aluminium.
Maybe I will use it for that purpose, I will never do that with a turntable in good condition.
It is a H shaped piece of aluminium.
Maybe I will use it for that purpose, I will never do that with a turntable in good condition.
THX A LOT GUYS !
Think I'll use a thin wall aluminum tube than to start with .
Still not sure about the total lenght of the tube though 😕
Thank You for all the advice ... much appreciated 🙂
Paul
Think I'll use a thin wall aluminum tube than to start with .
Still not sure about the total lenght of the tube though 😕
Thank You for all the advice ... much appreciated 🙂
Paul
Yep , I have read that spec too .. but than .. we also need a tail to
carry the C.W. right ?
Just wondering if there is a certain agree of importancy to the tail lenght
as well 😕
Paul
Much less, unless the weight.
The important thing is the torque by the cantilever to move the carriage.
The important thing is the torque by the cantilever to move the carriage.
Paul,
Graphite | Metals | Salomon's Metalen
http://www.carbonwinkel.nl/nl/103-carbon-staaf
http://www.dewolfabriek.nl/category/76/Ebbenhouten-haaknaalden (I ordered here 6mm in the past.)
Hans.
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Don,t feel too bad, the Kuzma air tone arm has a horizontal mass of 80 grams!
how can you compare the friction of an air bearing and a mechanical bearing? Best regards Moray James.
I weighed my carriage with a piece of carbon fibre rod (3/16") about 8" long.
You can see it on the pics I posted. It was just over 20 gms.
The carriage is made of 3/16' plexiglass. I have a triangle shape, but if I can
leave the tail of the arm at the same height as the front...(again like my pics)
instead of a triangle, I can make a "V" shape....this should shave some weight off.
You can see it on the pics I posted. It was just over 20 gms.
The carriage is made of 3/16' plexiglass. I have a triangle shape, but if I can
leave the tail of the arm at the same height as the front...(again like my pics)
instead of a triangle, I can make a "V" shape....this should shave some weight off.
T shape will be the lightest, it's by no accident that I ended up with this configuration. On the armtube, the best is a straight through wand which places the bulk of the mass at cartridge level 🙂.
Colin
Colin
A hint to all building,
Try and make the tail of the wand longer so that you can use a smaller counterweight thus lowering horizontal mass while increasing vertical mass. I use a 6" wand it should be set so that for the specific cartridge the counterweight is almost at the end of the tail, this will mean different weights for different cartridges, I've offered as much useful information as possible here so it's up to you folks now 🙂.
Colin
Try and make the tail of the wand longer so that you can use a smaller counterweight thus lowering horizontal mass while increasing vertical mass. I use a 6" wand it should be set so that for the specific cartridge the counterweight is almost at the end of the tail, this will mean different weights for different cartridges, I've offered as much useful information as possible here so it's up to you folks now 🙂.
Colin
I think it's not so easy to measure a force this small .. however , I think in practice one could use a small PC fan to create a side force ( air flow ) just to figure between different approaches . I'n not into physics , but using some common sense should tell is what's going on .
I think 😛
Paul