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View Full Version : 2x8 Evap. Rates



Amber Gold
04-21-2008, 08:36 PM
I have a 2x6 G.H. Grimm that I'm going to restore. I was talking with Justin and recommended that I stretch it to a 2x8. Don't know why I didn't think of it, but it makes complete sense. I'm retinning the whole thing anyways.

With my 2x6 I was figuring 30 gph bone stock, 35 gph with a hood and preheater, and 45 with a blower. Based on this logic should I be able to get 50 gph stock, 58 gph with a hood and preheater, and 68 with a blower if I stretch it to a 2x8? If not these numbers, what should I expect?

Also would I definitely need a 10" stack to get a better draw through the longer flue pan? I'm pretty sure the 2x6 arch originally came with an 8" stack, but I guess the new ones come with a 10" stack.

Thanks

Josh

maplekid
04-21-2008, 09:08 PM
i dont think you can get 68 out of a 2x8, talk to brandon(westvirginiamapler) i think hes got airtight front and prehaeter with hoods.

WESTVIRGINIAMAPLER
04-21-2008, 09:19 PM
With a 2x8 with a 5' flue pan, you can get aprox 35 gph stock and with a 6' flue pan, aprox 40 gph and probably add about 10% to that number with a preheater. I have a 5' flue pan with a preheater and an inferno arch and I get 60gph average and 65 gph on a good day. My numbers include startup and shutdown, not my best hour which is often promoted in gph #'s and not the full time of the entire boil. To achieve those #'s, I run stack temps around 1600 and push 760 cfm thru the evaporator.

H. Walker
04-21-2008, 11:12 PM
I had a 2' x 8' Algier with a 5' flue pan and 7" flues, without any hood I run around 40 GPH.

Amber Gold
04-23-2008, 08:06 AM
I already have a 2'x2' syrup pan, so I'm going to try and find a 2'x6' flue pan. The numbers aren't quite as good as I was hoping, but certainly better than if I was to keep it as a 2'x6' arch.

Thanks

Josh

cropseyvillemark
04-23-2008, 08:10 AM
I get 50 gph on my 2x8.I have a 66" flue pan & Inferno arch.No pre-heater or hood..yet.

Brent
04-23-2008, 10:43 PM
Talk to Leader about getting one of their new Maxi pans ... it is a combination of raised and dropped flues, gets a lot more surface area for heat transfer and if I recall correctly increases of about 40% over a standard flue. I saw one in action a few days ago on a 4 x 12 chugging back about 575 GP with the RO running. Awwwwwsome

Amber Gold
04-26-2008, 09:37 AM
Thanks for all the responses.

Brent, I have heard of the maxi pans and they do encrease the evap rate by approximately 40%, but when I was looking at buying a new flue pan for the 2x6 it was $3850 for the maxi pan vs $2645 for the standard leader flue pan. Maybe I'll get lucky and find a used one.

Brent
04-26-2008, 04:05 PM
the chances of finding a used one are next to zero. They only made prototypes about 2 years ago and this year is the first year for regular sales, as I understand it. And they won't have sold more than a handful of them.

Look at it this way ... a 2 x 8 with a maxi will boil almost the same as a 3 x 8, with less fuel and less floor space. Compare the price of a 3x8 and a 2x8 with the maxi to really understand costs.

Uncle Tucker
04-26-2008, 05:16 PM
Bret great point!
I think the maxi pans are for people who have an arch already and wanted new pans with more GPH. I think if I were buying new, I would just get a bigger rig. I now people say that space is an issue, but with the price of SS you could tare down your sugar house and build 2 larger sugar houses and still have $ to use to start your fire with. I’m sorry I just can’t believe the price of this maple stuff!!! I think the maxi pans are great for people who need new pans and are all set up.

WESTVIRGINIAMAPLER
04-26-2008, 08:58 PM
If you have a certain amount of money to spend and a 2x8 maxi is the same price as a 3x8 regular evaporator, get the 2x8 maxi. You will use aprox 50% less wood and get close to the same evaporation rate.

Joe(TheMapleKing) bought a set for his 3x8 and he went from averaging 80 to 90 gph to 135gph this year.

NYScott
05-06-2008, 08:54 AM
I came across one of these with stainless pans that look good. the arch is homemade but definitely a quality job. I am quite sure I can pick this up for $2000 is this a good deal?

WESTVIRGINIAMAPLER
05-06-2008, 10:02 PM
Be a little more specific about everything you are getting for $ 2k?? Is is a one pan or two pan evaporator?? Flat pans, flue pans, does it have a complete arch, etc??

Haynes Forest Products
05-07-2008, 01:25 AM
If you think the cost of maple stuff is expensive go buy a bass boat spend 5 weeks in it with the wife and kids do that for 5 years and then tell me how much you sold the fish for and made on the trade in..........this aint all that bad

NYScott
05-07-2008, 06:52 AM
Ok this is what I would get for $2000 THe Arch 2x8 Homemade but quality it appears to be 1/4" plate steel very heavy and brick lined the doors and the stack appear to be factory. There are two pans a 6" raised flue pan somewhere in the neighborhood of 66x24 inches and a divided syrup pan, you can draw off both sides, the floats are there is also two aluminum steam hoods for the front and rear pans the rear hood also has a built in preheater and drip pan. Again all the pans are welded stainless. So is it worth it?

super sappy
05-07-2008, 07:20 AM
It the pans are welded and hold water, not warped to crap. A new one is mostlikely 6'000.oo Sounds like a deal to me -SS

WESTVIRGINIAMAPLER
05-10-2008, 06:13 PM
Worth well more than 2K if it is in good shape, buy it up before someone else does. With the plate steel on the arch, that thing might last a lifetime with the welded stainless pans too.