| Coulomb |
Is there any interest in a Canadian Heat Sink Group Buy?
I have some quotes already, this one would be $40 per foot, that's Canadian Dollars. I would have to order at least 24 Feet, which realy is not that much. I do not mind having the goods shipped to me and I could reship across Canada or could arrange Pick up in the GTA (Greater Toronto Area).
Regards
Anthony |
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| Coulomb |
Here is another profile, that I plan on bolting up in sections of three per side and have them cut to 14" in length for a total of 84" resulting in a C/W of 0.1
It should be a little less than $40 per foot Canadian.
Anthony |
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| Mark A. Gulbrandsen |
I'm about to run up my first X board on the variac and was wondering whats the proper procedure for setting the input pair current source adjustment???
Thanks,
Mark |
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| Coulomb |
Is there no Canadian interest at all!
Anthony |
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| Coulomb |
Here is a bit more information, the Heat Sink Extrusion E3096 at $28 US per foot (not Anodized) through a group buy starting at 24 feet.
48" = 0.08 C/W, this would be 4 x 12" peices set up as 2 sides each being 12"x24".
This would be perfect for an Aelph 1.2 Monoblock or a High Power Aelph X running at 200Watts into 6 Ohms! 28VDC Rails at 8Amps Bias with 16 FETs per channel, Heatsink Temperatures of 58 Deg Celsius.
http://www.thermaflo.com/bin/exdata...1=Change+Length
Regards
Anthony |
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| bzo |
Is this open to those of us in the US?
Will the heatsinks be cut, or would we be getting one long piece? |
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| Coulomb |
| quote: | Originally posted by bzo
Is this open to those of us in the US?
Will the heatsinks be cut, or would we be getting one long piece? |
Yes it is, but as the supplier is in the US, I am trying to find a volunteer to redistribute all the US Material rather than shipping to Canada paying taxes and shipping back to the US.
They can be cut in equal divisions into 8 feet or you can take a bar length. I am looking into getting the cut sections black Anodized.
How much material were you looking for?
Regards
Anthony |
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| JasonL |
| If i had a job and a liife i would buy some heat-sink's.. |
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| bzo |
| I might be interested in 48". I'm building 3 40-50w Aleph-Xs and am planning to go with 2 12"x8" heatsinks per channel. |
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| Coulomb |
| quote: | Originally posted by bzo
I might be interested in 48". I'm building 3 40-50w Aleph-Xs and am planning to go with 2 12"x8" heatsinks per channel. |
Well they are 12.25" wide so an 8" length might be a little small. Did you go to the website and punch in the 8" length to see the power dissipation?
Anthony |
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| Coulomb |
| quote: | Originally posted by bzo
I might be interested in 48". I'm building 3 40-50w Aleph-Xs and am planning to go with 2 12"x8" heatsinks per channel. |
So I looked it up, an 8" section of this profile while rise 32 Deg Celsius above room temperature while dissapating 120 watts. a 12"x12" section dissapates the same power at a 23 Deg rise above room temperature.
Anthony |
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| bzo |
I'm not going to be running that much power, though an 8" section still seems to be doable at that level.
I'm thinking about going with 17V/5A, which dissipates 170W. So if each 12x8 heatsink is dissipating 85W, it looks like a 25C rise. |
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| Coulomb |
| quote: | Originally posted by bzo
I'm not going to be running that much power, though an 8" section still seems to be doable at that level.
I'm thinking about going with 17V/5A, which dissipates 170W. So if each 12x8 heatsink is dissipating 85W, it looks like a 25C rise. |
Of course Monoblocks!!
I was thinking in Stereo. :)
Regards
Anthony |
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| Coulomb |
I have a reduction in price on Extrusion E3096 to $27 US per foot, this is based on a 48 foot purchase.
Each cut at the factory would be an additional $3. If you want the cut section anodized that would be $14 US each.
If we only buy 24 Feet, then the price is $28 US per foot.
Anodizing maybe cheaper to get done buy a local shop, the last time I had it done in Toronto, last year it was $100 CAD for 8 x 10" sections.
Anthony |
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| Jeff Reeves |
| Hi. Would it be cheaper to get it anodized without getting it cut? As it would be only 1 piece, set-up might be easier, hence a possibly lower price. I can always get it cut here, although the cut ends would be the original aluminum color. Another consideration is whether or not you can only get multiples of 4 feet, as I would prefer 5, maybe 6 feet. Otherwise, it looks like a pretty good price. Any idea on shipping costs? I live just outside of Toronto so I could pick it up there. |
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| Coulomb |
Hello Jeff, I did ask about anodizing before the cuts and there response was the same as yours. I would be happy to toss your order in with mine for the anodizing locally.
The bars are in 8 foot lengths, I may ask to have them cut in half to make shipping easier. I plan on cutting the 4 foot section into 4 equal length peices anyway.
More later
Anthony |
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| Coulomb |
Well I have another quote for a different profile from R-Theta. Profile # 65340 is the same profile as last years group buy.
This year's price is $54 CAD per 12" section which includes a finished product including Black Anodizing. That's FOB the Toronto Warehouse, shipping can be calculated at approximately $1 per pound. The 12" piece is about 11 pounds times the number of pieces required, equals your shipping costs.
We need a minimum of 50 pieces to make the price break of $54 or less. All taxes would also apply of course.
Here is some info on this extrusion. |
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| Coulomb |
I have a finalized price for the R-Theta extrusion above.
12" Finish cut and Anodized will be $52.50 Ea. CAD assuming a group buy of 50 Pieces or more.
If we get to a 100 pieces the price drops to $49.58 CAD ea.
Thier is a setup charge of $50 that will be split amoungst the number of buyers, not the number of pieces. I think that sounds the most fair.
Regards
Anthony |
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| Jeff Reeves |
| I think I need to clear up any confusion right away as to the length of the heatsink I need. I'm building 2 Aleph5s (monoblocks) with another friend. I figured an 8" length of 65340 heatsink, on each side, would be sufficient for anAleph 5 monoblock. So, 12" in length is more than I need, however, if the cost of the 12" in a group buy is less than the price of an 8" bought separately, then I'd buy the 12" and throw a couple extra mosfets on the output and increase the bias. :cool: |
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| Coulomb |
| quote: | Originally posted by Jeff Reeves
I think I need to clear up any confusion right away as to the length of the heatsink I need. I'm building 2 Aleph5s (monoblocks) with another friend. I figured an 8" length of 65340 heatsink, on each side, would be sufficient for anAleph 5 monoblock. So, 12" in length is more than I need, however, if the cost of the 12" in a group buy is less than the price of an 8" bought separately, then I'd buy the 12" and throw a couple extra mosfets on the output and increase the bias. :cool: |
Hello Jeff, Exactly.... :)
2 Pieces of 8" extrusion would almost certainly cost 80% of the 12" cost in the group buy plus a min order amount plus a setup charge of at least $50.
Regards |
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| hieroglyphics |
You don't understand how badly I want in on this group buy. :bawling: But alas, I'm a poor student who can only afford king cans on the weekend and cigarettes from the states. But I've had a longing to smoke some IRFP044's for some time now.
My focus is to build a couple of versatile Aleph X monoblocks so here's what I came up with:
22VDC, 7A, 12 (maybe 16) fets. This'll give me 100 watts into 4 and 8 ohms with a peak of about 130watts at 6 ohms. I taylored these values around 2 12" sections of this heatsink:
http://www.thermaflo.com/bin/exdata...1=Change+Length
With the Rth as it is with natural convection, I fear the 40C rise may be too hot so I was thinking of putting the sinks inside the chassis and mounting fans underneath to force air through the fins and out through some vents in the top. I've seen it done before and it seems like a cool idea.
I've heard good things about the quality of the R-theta sinks. That extrusion you posted looks quite nice. The Rth given is for a 3" section, so for a 12" section would that be like paralleling 4 of them (ie. equivalent Rth = 0.05)?
What kind of time frame were you hoping for with this group buy? I'm looking to get 4 sinks of this size as soon as I'm finished exams (when I get a job). But I'd love the group buy discount. |
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| Coulomb |
The extrusion is a continuous form, so the 12" length is one piece, not 3 or 4 sections cobbled together. The R-theta profile is quite similar to the E3096 from Termaflo, but not quite as beefy. the 65535 from Aavid Thermalloy os a pretty close comparison to the R-theta unit. You can use the extrusion calculator on the Aavid site to give you the C/W for the length you require. I find that Aavid underates thier extrusions when compared to thier competitors, not sure why. I have not started a Wiki yet as I am still in the fact finding stage and I am trying to get our US counterparts to join the group buy.
Regards
Anthony |
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| hieroglyphics |
Sorry, I shoulda been more clear. I know they don't come in 3" sections, I was purely talking about solving for the final Rth which is given on that pic you posted as 0.5 per 3". So to solve for a 12" piece thats sorta like paralleling 4 Rth's which would yield an equivalent Rth = 0.125 (previous value I calculated was for forced, not natural /ooops). Is this correct? Or is there some other method of calculating the final Rth from a given section?
This'll be my first project so all I've got to go by is what I've read from this forum. I'm not too concerned about aesthetics cuz I'm gonna put em inside the chassis anyway.
As for which heatsink to go with, I'm not quite sure yet, but I'm easy. Whatever the popular choice is, is fine. Long as it doesn't break the bank :smash: |
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| Jeff Reeves |
| Can I now assume that we are targeting the R-theta 65340 heatsink and not the Thermaflo E3096? My preference would be for the 65340 as shipping charges would not apply to me(I live in Ajax). They are already cut and anodized,and an exact price can be calculated. Myself, I'm in for 8 pieces:cool: |
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| Coulomb |
Well I got a quote on shipping from Thermaflo in the US to my door in Toronto and it is very costly.
Weight per 8' length is 80lbs. Total weight for
3 pieces would be 240lbs.
Each 48" length would be 40lbs.
USPS-Each 4' piece must be shipped individually.
$48.75ea. for Parcel post, 4-6wks.
$83.75ea. for Airmail, 4-10 days.
UPS-2 4'pcs per package
$247.10ea. for Ground, 7 days.
Those are $US Dollars folks.
So Thermaflo out, R-Theta in!
As soon as I can get someone to start a Wikki for me, I don't have a clue, I am going to try to hit the 50 watermark for the R-Theta finished product.
If you remember, I posted earlier in this thread, a finished 12" section with a four Process black Anodizing finish would cost $52.50 CAD FOB thier Mississauga location. Profile# 65340 just above.
Theresa at R-Theta has indicated the average cost of shipping anywhere in Canada is $1 per pound or $12 CAD per heatsink.
For those of you who are interested within a 2 or 3 hour drive of Mississauga, you may want to pick up your orders. I would need to pay R-Theta for the complete order in advance so I would need to collect all the funds via PayPal plus the 3% service charge they will charge me.
Once we have 50 units on the wiki (could take a while) I will post payment instructions. Anyone want to volunteer to set up a Wikki for a Canadian Heat Sink Group Buy?
Regards
Anthony |
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| Peter Daniel |
| quote: | Originally posted by Coulomb
I would need to pay R-Theta for the complete order in advance so I would need to collect all the funds via PayPal plus the 3% service charge they will charge me.
Once we have 50 units on the wiki (could take a while) I will post payment instructions. Anyone want to volunteer to set up a Wikki for a Canadian Heat Sink Group Buy?
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Last time, personal payments could be made directly to R-Theta by using credit cards. |
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| Coulomb |
| quote: | Originally posted by Peter Daniel
Last time, personal payments could be made directly to R-Theta by using credit cards. |
Well how did you guarantee the minimum qty. for the price breaks?? |
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| Peter Daniel |
I believe there was about 200 orders, so there was no question about meeting minimum requirements (50pcs). I, myself, ordered 36pcs;)
For the money, it seems like the best extrusion around. |
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| Coulomb |
| quote: | Originally posted by Peter Daniel
I believe there was about 200 orders, so there was no question about meeting minimum requirements (50pcs). I, myself, ordered 36pcs;)
For the money, it seems like the best extrusion around. |
Peter you bought $1800 worth of heat sinks in one shot!!
You must have an extraordinarily high WAF!!!
Anthony |
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| Peter Daniel |
I used my credit card, not hers;)
This was all before GC madness. I already sold 2/3rds of those heatsinks at USD$50/pc. I actually made some money on that (considering 15% local taxes and low US$, it wasn't much) and made some members happy as well. |
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| Coulomb |
| quote: | Originally posted by Peter Daniel
I used my credit card, not hers;)
This was all before GC madness. I already sold 2/3rds of those heatsinks at USD$50/pc. I actually made some money on that (considering 15% local taxes and low US$, it wasn't much) and made some members happy as well. |
Hey Peter can you setup a wikki for me so I can gauge the committment level of all interested parties?
Thanks
Anthony |
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| Peter Daniel |
| I'm not sure how to set a new page, Brian did it for me. |
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| Coulomb |
| quote: | Originally posted by Peter Daniel
I'm not sure how to set a new page, Brian did it for me. |
OK I will ask Brian, thanks anyway.
Anthony |
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| Coulomb |
Thanks Brian,
Anthony |
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| Jeff Reeves |
| This WIKI page thingy just baffles me. If Coulomb could just increase his number to 20 (his 12 plus my 8) then we might be getting somewhere. The last time WIKI bested me Bigparsnip was kind enough to add my numbers to his. Thanks:confused: |
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| Coulomb |
| I can update the wikki for you Jeff. |
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| Coulomb |
Just want to remind all your DIY Canucks out there, we are looking for a few good Audio nerds to join our group buy. :-)
Anthony
Canadian Heat Sink Group Buy |
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| JasonL |
| MORE HEAT SINK'S.. how many dam heat-sinks do you need anthony.. These better not get pawned off on me .. |
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| Coulomb |
| quote: | Originally posted by JasonL
MORE HEAT SINK'S.. how many dam heat-sinks do you need anthony.. These better not get pawned off on me .. |
No Jason you need real money to buy these, not the imaginary kind you deal with! :)
Anthony |
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| Coulomb |
I am going to collect the funds from those of you signed up on the Wikki now. Please send me your email address and shipping info if you have not already, please do not post it here.
I will send you all an email to which you can respond with your shipping costs. I will be collecting the funds via Pay Pal plus 3.5% or a Bank Draft which you can mail to me.
As I am in Ontario, Canada, I will have to pay 15% in taxes on the finished goods. I will be shipping via Parcel Post this is the most economical way to ship and involves the lease costs.
Pick up will be available for those who feel they are local enough to drive to Toronto. The $50 Setup charge will be split 8 ways which equals $6.25 each.
Regards, I hope to hear from you all soon.
Anthony |
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| Jeff Reeves |
Attn Couloumb
I see my my daily visit to the WIKI that we are finally over 50 (52 to be exact). Since I believe that the 30 days on the quote ran out a while ago, do we need to contact Thersesa at R-theta again to see if it is still valid? If it is we can either move on it or see if the WIKI will go up any higher.
Jeff Reeves:devilr: |
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| Rarkov |
I may be interested if the shipping and price is right to the UK. So these are 0.5 degs C/W, correct?
I'd be interested in 4 for Aleph-X Monoblocs. (Low 20V supplies and 4A Bias into 16 devices) This equates to about 63degsC for the heatsink temp.
Should be OK...
Let me know.
Gaz |
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| Coulomb |
| quote: | Originally posted by Jeff Reeves
Attn Couloumb
I see my my daily visit to the WIKI that we are finally over 50 (52 to be exact). Since I believe that the 30 days on the quote ran out a while ago, do we need to contact Thersesa at R-theta again to see if it is still valid? If it is we can either move on it or see if the WIKI will go up any higher.
Jeff Reeves:devilr: |
I will be getting a new quote though I do not anticipate any changes. Send me you contact information Jeff if you have not already so I can send you an invoice amount.
Are you picking up Jeff? I am not sure but I may be able to arrange individual payments, but as the order is so small the entire order may need to be prepaid.
Anthony |
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| Coulomb |
| quote: | Originally posted by Rarkov
I may be interested if the shipping and price is right to the UK. So these are 0.5 degs C/W, correct?
I'd be interested in 4 for Aleph-X Monoblocs. (Low 20V supplies and 4A Bias into 16 devices) This equates to about 63degsC for the heatsink temp.
Should be OK...
Let me know.
Gaz |
I am not sure how economical it would be for you but here is the shipping table from Canada Post to England.
The following shows the rate(s) for a parcel of 14.00in x 14.00in x 8.00in weighing 48.0000Lb.
International Surface Parcel
Base Price: 114.95
Fuel Surcharge: 2.87
Insurance: 3.60
Total: $121.42
That's about $50 UK Pounds. Let me know if you are still interested.
Anthony |
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| Rarkov |
Hi,
No, ur right. It comes to about £130 including 4 heatsinks and that is the same as what's quoted here + I won't have to pay import tax on top.
Thanks anyway...
Gaz |
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| metalman |
Coulomb,
I signed up for some heatsinks on the Wiki, but I've been away from the forum for awhile (damned career gets in the way of my hobbies :grumpy: ). I saw a post that you were planning on contacting people for payment a couple of weeks back and I have a queazy that I might have missed the boat :yikes:. I tried sending you a couple of e-mails via diyaudio but I am assuming you didn't get them as I haven't heard anything back.
Did I miss out? :confused:
Metalman |
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| Jeff Reeves |
| Has anyone heard or had contact with Coulomb about the group heatsink buy? I've sent 3 e-mails that he hasn't responded to, and I know that Metalman has posted a reply and sent e-mails that weren't acknowledged. Basically, the last contact was back on May 4th. Its frustrating because this is our only connection to him. Anyone else feel this way? |
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| JasonL |
| I say he is useless. : O ) Some one should take over the wiki for him since there are alot of people needing and looking for this product.. |
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| JasonL |
| If any one is really in needed some one can pm me and ill give them his contact number's.. |
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| Coulomb |
| quote: | Originally posted by JasonL
I say he is useless. : O ) Some one should take over the wiki for him since there are alot of people needing and looking for this product.. |
I take great offence to these sort of insults that are thinly disguised as humour. Also, as the member who made them has no involvement with group buy nor has he made any commitment to buy, his comments on the matter are not welcome.
Anthony |
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| JasonL |
It's ok.. il hand you a tissue. For a person that gets offended from a simple little thing as that.. i should paste half the stuff you say to me in my email's..
Any ways.. get off yuor but and help these people do what you promised them.. |
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| Coulomb |
| quote: | Originally posted by metalman
Coulomb,
I signed up for some heatsinks on the Wiki, but I've been away from the forum for awhile (damned career gets in the way of my hobbies :grumpy: ). I saw a post that you were planning on contacting people for payment a couple of weeks back and I have a queazy that I might have missed the boat :yikes:. I tried sending you a couple of e-mails via diyaudio but I am assuming you didn't get them as I haven't heard anything back.
Did I miss out? :confused:
Metalman |
| quote: | Originally posted by Jeff Reeves
Has anyone heard or had contact with Coulomb about the group heatsink buy? I've sent 3 e-mails that he hasn't responded to, and I know that Metalman has posted a reply and sent e-mails that weren't acknowledged. Basically, the last contact was back on May 4th. Its frustrating because this is our only connection to him. Anyone else feel this way? |
Hello Guys, I have been negligent in following up with you for that I apologize. My professional duties have been demanding many long hours in the past month and I have not had the time to invest in Forum business.
I will try to catch up this weekend, but I have to split any available time with the ALW Regulator Group buy that I am organizing for North America. The boards arrived today and I have to make up all the packages to mail across the continent.
Regards
Anthony |
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| Coulomb |
| quote: | Originally posted by JasonL
It's ok.. il hand you a tissue. For a person that gets offended from a simple little thing as that.. i should paste half the stuff you say to me in my email's..
Any ways.. get off yuor but and help these people do what you promised them.. |
Many things can be promised sir and not delivered, like payment for goods received as an example. Now please leave me alone to handle my own committments. |
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| metalman |
Coulomb,
Thank you for taking the time from your busy schedule to reply. I, for one, am not in any sort of hurry and appreciate the efforts you are making. I can sympathize with the demands of a professional life, as you probably saw from my last post, and I certainly didn't intend to pester you. I just wanted to find out if I had missed out on the opportunity you are creating.
Cheers! :nod: |
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| Jeff Reeves |
| Its good to hear from you again Mr Coulomb. I wasn't aware that you had another group buy going on. I can imagine that it might take up a fair chunk of your spare time. |
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| MemphisJim |
Hi all, I'm going to make a pair of Aleph 2 clones and I'd love to get into this group buy if it's still open. Count me in for four feet if its still open (I'm fairly sure 4 feet is enough).
Thanks,
Jim |
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| Coulomb |
| quote: | Originally posted by MemphisJim
Hi all, I'm going to make a pair of Aleph 2 clones and I'd love to get into this group buy if it's still open. Count me in for four feet if its still open (I'm fairly sure 4 feet is enough).
Thanks,
Jim |
Hello Jim for an Aelph 2, you may want to consider 4 per channel. I will look into it further for you, anyone have any other ideas?
I will get you a shipping estimate for you as well.
Regards
Anthony |
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| Mr Teal |
| I'd be interested in 4 12" sections. Any idea when the group buy will happen? I assume that'd be around $220-$250 Cdn? |
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| Coulomb |
This is still open, but alas I have had to put a hold on the project until I have secured employment again. Hopefully that will not be too long.
Regards
Anthony |
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| Alain Dupont |
Coulomb,
I subscribed for 4 pieces
R-Theta # 65340 12"long
on the wiki list.
Best regards.
PS: The APOX kits are all assembled, it was impossible to obtain a LCD Display from Appollo tech, and APOX had only green ones ; so I ordered 1 at Mouser.
Regards.
Alain. |
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| Frazzled |
Hello everyone...
I wish to inform everyone that you should proceed with caution when dealing with Anthony (coulomb)
I had purchased 2 aleph x boards from him and some hexfreds, I have sent him payment and have been waiting several weeks for shipment and I only live a 45 minute car ride away.
Anthony has been slow to respond to email and once said the item had shipped but then a week later said he hadn't shipped yet due to a back injury but promised to ship on July 2nd, here it is the 8th and still no goods and he has not responded to my repeated emails and his EBAY account has been suspended.
Again this is just a caution and there may be a reason for all of this and I will most definitely update this if things should change.
Thanks! |
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| Frazzled |
Hello everyone...
I have been contacted by Anthony this evening and it appears he has been in the hospital and as such was unable to ship my purchases. This would explain a lot! Anthony has told me my parcel should arrive on Tuesday.
If my parcel arrives I will be contacting the moderators to kindly ask that my last post be removed and I will make a full public apology at that time, as I have no reason or evidence to prove that Anthony has been nothing but honest with me, and it appears he has been the victim of bad luck. Anthony was very polite and apologetic with regards to the shipping delay despite what I had posted here and I believe him.
I will post more including my apology upon receiving my package.
Thank you one and all for your time.:ashamed: |
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| Frazzled |
Today I received my shipment from Coulomb as was promised, I would like to apologize to Anthony (coulomb) for any stress I may have caused him with my post, I see now that it was in haste.
Sorry to everyone else for any stress I may have caused you. |
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| Sze |
Coulomb,
New to this forum. I am looking for heat sinks and I happen to find this thread in my search.
Is this group buy still on and can I still get in on the buy?
I am interested in 4 pieces.
Thanks.
Dan. |
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| Coulomb |
Yes please post your interest in the Wiki, I had to put this on the back burner, but now I am going to move forward with collecting the funds in the next few days.
Regards
Anthony |
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| Sze |
Perfect, now let see if I can figure out how to add myself to the wiki.
BTW Coulomb is the price for each 12" piece of 65340 still $52.50?
Dan. |
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| jajabin |
Hi Coulomb,
I would like to order some heatsink
Can you update the latest price quote?
Is it 52CND for a 12 inch piece,
and ~50USD for the shipping for 4 of them?
If that's the case, I would like to order 4 pieces.
Also, how to make the payment? paypal? person check?
Thanks
Wing |
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| lcleven |
| quote: | Originally posted by Coulomb
Yes please post your interest in the Wiki, I had to put this on the back burner, but now I am going to move forward with collecting the funds in the next few days.
Regards
Anthony |
Did your group buy for heatsinks go ahead, and if so, are there any more available.
Larry |
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