My 1988 Hunter 35 still has a CNG stove, and the tank is in the original location behind the stove with access from the hanging locker in the aft cabin. In a recent survey for insurance purposes I was told it has to be moved to an air tight locker that does not open to the interior. I have two questions: 1) Has anyone got any suggestions where I can put the tank locker, and if so, would it be possible to put two tanks in that location so I can carry a spare? 2) Would it make more sense to switch to propane, and if so, do I need to change the CNG burners to propane? Even if I do change to propane, where do I put those tanks?
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Dave Brengelmann
Perfectly happy with CNG!
Interesting that someone told you the CNG tank had to be in an airtight space. CNG, unlike propane, will harmlessly float away if it leaks; it is a lot safer than propane. You might want to question the reasoning behind the recommendation you received. If you do switch to propane, you'll want to get your tank outboard and remove any possibility for the gas to sink down into any of your spaces on board. My advise, stick with your safe CNG, purchase an extra tank in case you run out of CNG on a cruise, and enjoy the safe burn it provides!
Interesting that someone told you the CNG tank had to be in an airtight space. CNG, unlike propane, will harmlessly float away if it leaks; it is a lot safer than propane. You might want to question the reasoning behind the recommendation you received. If you do switch to propane, you'll want to get your tank outboard and remove any possibility for the gas to sink down into any of your spaces on board. My advise, stick with your safe CNG, purchase an extra tank in case you run out of CNG on a cruise, and enjoy the safe burn it provides!
J
Jim Trammell
CNG Tank
On my H34 '87, my CNG tank was located in aft locker that was seat for helmsman, I purchased another and had them both installed verticaly so that I could move the valve from tank to tank without moving tank. I don't know of availability of CNG where you are, but that and the money you are going to spend would be the deciding factor for me......I have CNG on my present boat and am satisfied.......but I do understand availability is becoming a greater issue........
On my H34 '87, my CNG tank was located in aft locker that was seat for helmsman, I purchased another and had them both installed verticaly so that I could move the valve from tank to tank without moving tank. I don't know of availability of CNG where you are, but that and the money you are going to spend would be the deciding factor for me......I have CNG on my present boat and am satisfied.......but I do understand availability is becoming a greater issue........
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Gordon Myers
Get a new insurance agent !!!
CNG is lighter than air, therefore the gas will not go to the bildge or be trapped. Propane is the opposite and any gas that leaks will get trapped in bildge, locker, ect. and cause explosions and fire. Your insurance person does not know the difference or is confusing the two. CNG is the way to go, but out side of the USA you will need to convert to Propane since CNG is not available.
CNG is lighter than air, therefore the gas will not go to the bildge or be trapped. Propane is the opposite and any gas that leaks will get trapped in bildge, locker, ect. and cause explosions and fire. Your insurance person does not know the difference or is confusing the two. CNG is the way to go, but out side of the USA you will need to convert to Propane since CNG is not available.
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John
Agree with previous posts, and...
I agree with the previous posts that CNG should not be a problem the way you have it installed. Perhaps the insurance agents representative is unfamiliar with this fuel. Our boat is an '88-35 and there is a vent in the aft hanging locker and perhaps that should be pointed out to them. With regard to LP, I've been looking at this for a long time. About the decent location is under the starboard aft seat in the cockpit, the one that is open forward. It is a separate section of fiberglass and is held in place with screws and sealant. My thought is to install either a horizontal or vertical tank here. To meet code the lowest point in the enclosure would have to be drained so gas will not accumulate. The seat could be cut on the side near the walk-through and a piano hinge installed. The top of the seat would be a lid. The reason for doing this is my wife wants a new stove, one with an oven. Plastimo (I think) euro two burner is about the only one that will fit and it would be a real squeeze. Chances of doing this project is small but I've been thinking about it.
I agree with the previous posts that CNG should not be a problem the way you have it installed. Perhaps the insurance agents representative is unfamiliar with this fuel. Our boat is an '88-35 and there is a vent in the aft hanging locker and perhaps that should be pointed out to them. With regard to LP, I've been looking at this for a long time. About the decent location is under the starboard aft seat in the cockpit, the one that is open forward. It is a separate section of fiberglass and is held in place with screws and sealant. My thought is to install either a horizontal or vertical tank here. To meet code the lowest point in the enclosure would have to be drained so gas will not accumulate. The seat could be cut on the side near the walk-through and a piano hinge installed. The top of the seat would be a lid. The reason for doing this is my wife wants a new stove, one with an oven. Plastimo (I think) euro two burner is about the only one that will fit and it would be a real squeeze. Chances of doing this project is small but I've been thinking about it.
J
jwsailor
cng safer
my 1988 hunter 40 has the cng in the aft-starboard cockpit seat and holds two bottles, it is vented. however cng is lighter than air and will not sink to your bilge like lpg. I have also considered switching to lpg because of availability. cng is difficult to find on northern gulf coast. It was easy to locate in south florida. I agree you need another insurer or competent surveyor.
my 1988 hunter 40 has the cng in the aft-starboard cockpit seat and holds two bottles, it is vented. however cng is lighter than air and will not sink to your bilge like lpg. I have also considered switching to lpg because of availability. cng is difficult to find on northern gulf coast. It was easy to locate in south florida. I agree you need another insurer or competent surveyor.
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Bryan
To: John re: vent location on '88 35
John, I have a '88 35 Legend, and the previous owner had apparently removed the vent. The vent line and cowl is still connected, and the cowl is tarnished like it had been on the outside of the boat for a long time. Where exactly does the vent go to on your boat? Thanks. Bryan.
John, I have a '88 35 Legend, and the previous owner had apparently removed the vent. The vent line and cowl is still connected, and the cowl is tarnished like it had been on the outside of the boat for a long time. Where exactly does the vent go to on your boat? Thanks. Bryan.
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John
Bryan CNG Reply
Re: CNG Tank Placement on Hunter 35 '88 Sorry for the delay - kept forgetting to look at the CNG tank installation. The CNG vent line goes from the thru side hull vent to a grey gizmo which I don't know what it is - pressure reducer (it looks like one)?? This, in turn, is connected to a brass gizmo which has a pressure gauge comming out of the side. The brass gizmo is connected to the CNG tank. I will try to remember to see what I have for literature and send another post.
Re: CNG Tank Placement on Hunter 35 '88 Sorry for the delay - kept forgetting to look at the CNG tank installation. The CNG vent line goes from the thru side hull vent to a grey gizmo which I don't know what it is - pressure reducer (it looks like one)?? This, in turn, is connected to a brass gizmo which has a pressure gauge comming out of the side. The brass gizmo is connected to the CNG tank. I will try to remember to see what I have for literature and send another post.
G
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