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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Burettes for measuring piston/chamber volumes
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Thu, 18 December 2003 05:23
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(not sure if this is the right place to post.. it is tech, and i'm not selling anything... so here goes...)
Hey all,
ever wanted a burette for measuring combustion chamber volumes?? (much more accurate than a couple of syringes)
www.livingstone.com.au has the SIMAX class B 50ml burette (graduated in 0.1mls) which is glass with a glass tip, and a teflon stopcock.
they are on special (15% off) until end of january for $33 (inc GST) + delivery ($11 for sydney, $16.50 for other cap cities, and $22 for country) or pickup from their Rosebery warehouse.
the part number is 435206725
Cya, Stewart
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Location:
Lost in the K hole
Registered:
May 2002
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Re: Burettes for measuring piston/chamber volumes
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Thu, 18 December 2003 06:07
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i just used a series of syringes from the hospital...
worked great, and cost me SFA 
id like to say that cc'ing a chamber is rocket science requiring a burette, but it aint 
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: Burettes for measuring piston/chamber volumes
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Thu, 18 December 2003 06:30
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yeah, you can use syringes, but you need to consider teh innacuracy induced by filling a syringe multiple times...
for my CCV's of around 35cc, if i had a 5cc (0.1ml grad) syringe, i'd need to fill it up 7 times.. you might be out around 0.1mls each time, which totals 0.7mls, which, although it aint much, is still a fair bit (3mls = 1 compression point for me)
if you do not have the luxury of high accuracy high volume syringes, then a burette will be better... actually, a burette will always be better than a syringe, because you only fill a burette up once, so there is no inaccuracy between fills 
with the shitty plastic ones from chemists, that are maybe 10mls in 0.5ml grad, or 25mls in 1ml grad, the innaccuracy is too large for my liking.....
and dammit, i like glassware 
Cya, Stewart
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: Burettes for measuring piston/chamber volumes
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Thu, 18 December 2003 07:37
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Points to 50ml syringe (which actually has graduations to 60ml).  They are actually accurate to less than 1 cc - they have to be - overdosing people is associated with a lot of paperwork and court visits.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: Burettes for measuring piston/chamber volumes
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Thu, 18 December 2003 07:49
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| gianttomato wrote on Thu, 18 December 2003 18:37 |
Points to 50ml syringe (which actually has graduations to 60ml). They are actually accurate to less than 1 cc - they have to be - overdosing people is associated with a lot of paperwork and court visits.
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what are they graduated in? the burettes are in 0.1mls....
is it easy to do drop by drop with the syringe? what would you say the measurement accuracy is if you were going to measure about 30-40mls? they might be a better option if you can get to less than maybe 0.2-0.5mls accuracy...
Cya, Stewart
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Location:
Lost in the K hole
Registered:
May 2002
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Re: Burettes for measuring piston/chamber volumes
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Thu, 18 December 2003 10:50
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yeah, what he ^^^^^^ said
i used 50ml syringe to get it close to filled, and stopped on a solid graduation. then finished the fill with a 5ml syringe. worked nicely. and whilst 0.1ml tolerance probably wanst what i was aiming for between chambers, it did all work nicely.
but yeah, cheap burette!!
*recalls the days when he didnt pay for pyrex...  *
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: Burettes for measuring piston/chamber volumes
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Thu, 18 December 2003 10:51
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yeah, both my local chemist and tobacconist both think i'm a drug dealer (for syringes and those little baggies)
i guess my point with the burette is so you can match volumes between chambers and that kind of thing...
i've only ever used soapy water for CCV measurements. never tried oil. i use a 5mm thick perspex plate against the head, with 2 holes, one for water to go in, the other for air to go out... then rather than judging when the meniscus is level with the face of the head, you just see when the water is fully touching the perspex...
heh heh, i think ppl are generally paranoid
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: Burettes for measuring piston/chamber volumes
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Thu, 18 December 2003 11:11
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oh, i should have mentioned at the start, all my friends are now hassling me because
"It's all about the measuring"
 
and one of them had the audacity to ask me how big our fridge was (a joke unbeknownst to me) 
sigh... back to my thesis hole 
Cya, Stewart
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I supported Toymods
Location:
Perth, Western Australia
Registered:
December 2002
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Re: Burettes for measuring piston/chamber volumes
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Thu, 18 December 2003 11:21
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[quote title=oldcorollas wrote on Thu, 18 December 2003 18:51]i've only ever used soapy water for CCV measurements.[/quote
Diesel works better!
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