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-   -   Propane Dinghy Motor?? (https://www.trawlerforum.com/forums/s20/propane-dinghy-motor-10294.html)

beachbum29 05-24-2013 02:38 PM

Propane Dinghy Motor??
 
What do you think about them?

We were looking at them today & it seems to be a nice setup.

timjet 05-25-2013 07:16 AM

Is there an advantage? Finding propane dock side may be a problem.

beachbum29 05-25-2013 07:19 AM

That's what I'm trying to figure out if they are more or less of a hassle than gas.

timjet 05-25-2013 07:24 AM

I guess I don't see the advantage. If propane is cheaper than gas then maybe, but I don't run my dinghy motor enough to consider the cost of O/B fuel a consideration. Again my concern would be obtaining propane in out of the way places, or even on a month long trip. Propane is generally not available dock side from my experience. Fuel almost always is. On the plus side, since propane is stored above ground as a liquid, it is unlikely to be contaminated.

beachbum29 05-25-2013 07:59 AM

According to the brochure at 3000 rpm a 10 gal tank of fuel will last 25 hrs.

I'm thinking 1 tank of fuel would be all you need to carry.

A 16.5 oz camping bottle lasts 2.5 hrs.

timjet 05-25-2013 08:07 AM

Quote:

Originally Posted by beachbum29 (Post 158786)
According to the brochure at 3000 rpm a 10 gal tank of fuel will last 25 hrs.

I'm thinking 1 tank of fuel would be all you need to carry.

A 16.5 oz camping bottle lasts 2.5 hrs.

If true then I think the availability of propane may be mute.

HopCar 05-25-2013 08:40 AM

1 Attachment(s)
I'm a dealer for Lehr outboards and I own a 2.5. I haven't had it long but I like how easy it is to start. I also think handling propane is a lot cleaner and easier than gasoline. I haven't used it for dinghy duty but I've been using it on an inflatable to explore the shore line and get back up into the mangroves. The 2.5 really doesn't burn much fuel. At wide open throttle they say it will burn about a pound per hour. At about 3/4 throttle you get better than twice that.

I've run it on both the 16 oz. cans and an 11 pound fiberglass tank.

"According to the brochure at 3000 rpm a 10 gal tank of fuel will last 25 hrs."
That is 10 pounds not 10 gallons. Ten pounds of propane is about 2.5 gallons.

I can't speak to the availability of propane when cruising, but I can say I think it is a well made motor. I love how easy it is to start. My last outboard was a Suzuki that I had to clean the carb if I let it sit a month or two without starting. That shouldn't be a problem with propane.

Note the 11 pound fiberglass tank in the photo below.

beachbum29 05-25-2013 08:50 AM

You are correct that it's 10 lbs, not 10 gallons

Oops

It appears the 2.5 is selling for $1K?

CaptTom 05-25-2013 09:12 AM

To me the best fit would be on a diesel boat with a magma grill. I already carry a bunch of those small cans for the grill, so with one of those propane outboards I wouldn't need to carry gasoline. If you had a propane stove you might have a spare 10 lb bottle, too.

Those grill-size cylinders are available just about everywhere. Most department and hardware stores have them, as do many marina stores and even supermarkets. Granted they aren't usually at the fuel dock, but I've never felt like I couldn't get one if I needed it. If I was planning to buy a new outboard anyway, these would be on my short list. But no way can I justify it unless the 4-stroke gas outboard I have now dies.

healhustler 05-25-2013 09:47 AM

I've got a 9.9 Merc two-stroke and a 9 ft. Caribe. When it's time to trade off for something else, the Lehr is a legitimate alternative for us. My Admiral can change out those 16.5 oz bottles a lot easier than she can lug around a gas tank, and I can think of very few instances where we'd be going somewhere that having a spare bottle wouldn't be overkill. In the Bahamas where you could spend hours transiting from island to island just to explore, something more than a 2.5 would help. Don't they have a 9.9 HP? How about the weight?

beachbum29 05-25-2013 10:01 AM

They offer the 2.5, 5.0 & a 9.9 which weighs 88lbs according to the brochure.

2.5 @ 38 lbs

5.0 @ 49 lbs

Brooksie 05-25-2013 12:37 PM

Sounds like a great idea. No gasoline fumes, spills in the dinghy, winterizing the carb at season's end, carbon on rings, valves, sparkplugs, no flooding. However tanks aboard should be in a proper propane locker but so should gasoline for that matter.

The weights seem as light as some 2 cycles ...

beachbum29 05-25-2013 12:49 PM

They offer a see thru 10lb tank so it's easy to monitor fuel level.

I'm pretty much sold on getting a 2.5

HopCar 05-26-2013 10:01 AM

Healhustler, If you want to play with one, you can borrow my 2.5 for a few days.
The 9.9 won't accept the little bottles, it has to run on a separate tank.

If any of you guys buy one, have the dealer start it for you and show you how to bleed the air out of the system. It's real easy and you may never need to do it after the first start but it isn't in the owners manual. The dealer should also set the idle for you. The last couple I sold idled too fast out of the box. Again very easy to do.

If you want to buy one, ask for a quote from the dealer. You'll probably get a better price than if you order it off the internet. Lehr has a minimum advertised price that we all have to stick to. That doesn't mean we can't sell it for less.

beachbum29 05-26-2013 10:13 AM

Quote:

Originally Posted by HopCar (Post 158987)
Healhustler, If you want to play with one, you can borrow my 2.5 for a few days.
The 9.9 won't accept the little bottles, it has to run on a separate tank.

If any of you guys buy one, have the dealer start it for you and show you how to bleed the air out of the system. It's real easy and you may never need to do it after the first start but it isn't in the owners manual. The dealer should also set the idle for you. The last couple I sold idled too fast out of the box. Again very easy to do.

If you want to buy one, ask for a quote from the dealer. You'll probably get a better price than if you order it off the internet. Lehr has a minimum advertised price that we all have to stick to. That doesn't mean we can't sell it for less.

Where are you located?

SCOTTEDAVIS 05-26-2013 10:46 AM

Quote:

Originally Posted by beachbum29 (Post 158786)
According to the brochure at 3000 rpm a 10 gal tank of fuel will last 25 hrs.

I'm thinking 1 tank of fuel would be all you need to carry.

A 16.5 oz camping bottle lasts 2.5 hrs.


Umm.... somehow this math does not add up.


or my mental ratio calculator is broken

10 X 2.5 = 25
16.5oz X 10 = 165oz

1 gal is 132 oz

how many OZ is in a 10gal tank of propane?

can you refill from a larger tank to the boat tank?

like the unlimited storing of propane however

beachbum29 05-26-2013 10:50 AM

Quote:

Originally Posted by SCOTTEDAVIS (Post 158997)

Umm.... somehow this math does not add up.

or my mental ratio calculate is broken

You missed the correction;

10lb tank not gallon

HopCar 05-26-2013 10:59 AM

Beachbum, I'm in Miami, come on down!

beachbum29 05-26-2013 11:08 AM

Quote:

Originally Posted by HopCar (Post 159000)
Beachbum, I'm in Miami, come on down!

Haven't been down there in 5 years...

SCOTTEDAVIS 05-26-2013 11:29 AM

Quote:

Originally Posted by beachbum29 (Post 158998)
You missed the correction;

10lb tank not gallon


Your are right I did, thanks.

Now it works

I see the price of these coming down in the future, if they go to E15 fuel then these will be very popular and in larger HP ratings for marine use.

beachbum29 05-26-2013 11:35 AM

Quote:

Originally Posted by SCOTTEDAVIS (Post 159005)

Your are right I did, thanks.

Now it works

I see the price of these coming down in the future, if they go to E15 fuel then these will be very popular and in larger HP ratings for marine use.

Ethanol & water is a bad mix.

Conrad 05-26-2013 04:54 PM

We considered the 9.9 recently, but after doing the fuel calculations decided to get a Yamaha instead, which was within $20 of the Lehr. Our calcs suggested that a 5 HP Lehr would make sense from a fuel burn/storage perspective, but we needed the larger size.

Our dealer indicated that the Lehr is actually primarily made of Yamaha components, which I thought interesting.

beachbum29 05-26-2013 04:57 PM

Quote:

Originally Posted by Conrad (Post 159036)
We considered the 9.9 recently, but after doing the fuel calculations decided to get a Yamaha instead, which was within $20 of the Lehr. Our calcs suggested that a 5 HP Lehr would make sense from a fuel burn/storage perspective, but we needed the larger size.

Our dealer indicated that the Lehr is actually primarily made of Yamaha components, which I thought interesting.

That wouldn't surprise me. You can buy propane conversion kits for many applications.

healhustler 05-26-2013 06:32 PM

Quote:

Originally Posted by beachbum29 (Post 159037)
That wouldn't surprise me. You can buy propane conversion kits for many applications.

True, but if you've looked at the Lehr, you gotta admit that it is tied together in a very nice, neat, compact package. I sure like the idea of grabbing a spare 16.5 oz bottle and heading for the dinghy dock. If I didn't have a good 9.9 Merc now, I'd probably have bought one from Hopcar at the Miami Boat Show.

Hopcar....I might take you up on your offer. A 2.5 should do anything we want to do with local cruising and the loop. For the islands, we'd probably go with a bigger dinghy and 15 hp. I've got a spare dinghy sitting on the dock now....could hook it up there for a test.

beachbum29 05-26-2013 06:38 PM

Quote:

Originally Posted by healhustler (Post 159044)

True, but if you've looked at the Lehr, you gotta admit that it is tied together in a very nice, neat, compact package. I sure like the idea of grabbing a spare 16.5 oz bottle and heading for the dinghy dock. If I didn't have a good 9.9 Merc now, I'd probably have bought one from Hopcar at the Miami Boat Show.

Hopcar....I might take you up on your offer. A 2.5 should do anything we want to do with local cruising and the loop. For the islands, we'd probably go with a bigger dinghy and 15 hp. I've got a spare dinghy sitting on the dock now....could hook it up there for a test.

Since I have to put anything I get on the swimplatform, a 2 person inflatable with the 2.5 should suit us fine.

Having only seen pics of the Lehr, I'm assuming it's a nice package.

123 05-26-2013 07:38 PM

Quote:

Originally Posted by SCOTTEDAVIS (Post 158997)
Umm.... somehow this math does not add up.


or my mental ratio calculator is broken

10 X 2.5 = 25
16.5oz X 10 = 165oz

1 gal is 132 oz

how many OZ is in a 10gal tank of propane?

can you refill from a larger tank to the boat tank?

like the unlimited storing of propane however

20 Gal = ~80 ltr
80 ltr = 40 kg of propane (~0.51 kg per liter)

165oz = 4.7 kilograms = ~2.3 Gal propane

HopCar 05-26-2013 09:01 PM

"Our dealer indicated that the Lehr is actually primarily made of Yamaha components, which I thought interesting."
Lehr won't say that but I also think a lot of it is Yahama. Someone asked what flusher to use with a Lehr and Lehr gave me a Yamaha part number.

"You can buy propane conversion kits for many applications."
True but I don't think a Lehr is just a converted gasoline engine. They are designed to run on propane and you would need to lower the compression to get them to run on gasoline. Propane has an octane rating of 110 so they run the Lehrs at a higher compression ratio than an engine designed to run on 87 octane gasoline.

Healhustler, maybe next weekend we could throw it on your dinghy and go for a ride.
Your hatch lift should be in by now. I'm taking tomorrow off but give me a call on Tuesday.

FF 05-27-2013 05:41 AM

I sure like the idea of grabbing a spare 16.5 oz bottle and heading for the dinghy dock.

Even better is the idea of taking the cylinder with you to increase the chances of your dink being at the dock when you return .

SCOTTEDAVIS 05-28-2013 06:46 PM

Quote:

Originally Posted by FF (Post 159103)
I sure like the idea of grabbing a spare 16.5 oz bottle and heading for the dinghy dock.

Even better is the idea of taking the cylinder with you to increase the chances of your dink being at the dock when you return .


+1 good point :thumb:

JCDSAIL 06-04-2013 07:53 PM

Lehr 2.5 Propane Motor
 
I just purchased this motor and after several hours of trying to start it finally brought back to West Marine for a refund.
I t seems there is a fuel regulator and a banjo bolt that need to be bled if it won't start.
After watching a trouble shooting video that seems rather odd for a new product. The video shows the 5 horse which is different
And after talking to Lehr tech I found these devices impossible to gain access to with a paper clip and or open end wrench.
So I can imagine trying to do this bleed process while sitting in the dingy.

Too bad I thought the propane fuel idea was super.


JCD SAIL

beachbum29 06-04-2013 08:29 PM

Quote:

Originally Posted by JCDSAIL (Post 160674)
I just purchased this motor and after several hours of trying to start it finally brought back to West Marine for a refund.
I t seems there is a fuel regulator and a banjo bolt that need to be bled if it won't start.
After watching a trouble shooting video that seems rather odd for a new product. The video shows the 5 horse which is different
And after talking to Lehr tech I found these devices impossible to gain access to with a paper clip and or open end wrench.
So I can imagine trying to do this bleed process while sitting in the dingy.

Too bad I thought the propane fuel idea was super.

JCD SAIL

I heard that the fuel system needs to be bled after purchase by the seller.

healhustler 06-04-2013 08:53 PM

Quote:

Originally Posted by beachbum29 (Post 160682)
I heard that the fuel system needs to be bled after purchase by the seller.

Yeah, I heard that from Parks (HopCar) who is a dealer. He acknowledged that it has to be done when first gassed.

beachbum29 06-04-2013 08:56 PM

Looks like I'm going to order one from him.

HopCar 06-04-2013 09:16 PM

When I sell an outboard, I always start it and make any needed adjustments before I give it to the customer. I sold Johnson and Seagull outboards for many years and we always did that.

jleonard 06-05-2013 06:12 AM

I looked closely at one they had at Defender in March. It looked well built. I think I would try one if I were in the market for a dink engine.

Codger2 06-05-2013 08:58 AM

Quote:

Originally Posted by jleonard (Post 160744)
I think I would try one if I were in the market for a dink engine.

:iagree:

FF 06-06-2013 05:59 AM

IF the dink is modest size , it is really easy to power with a DC trolling motor .Used is fine.

The huge advantage is the bride will not have to start an engine , just operate the throttle.

"Trapping" the bride aboard has been the termination of some cruisers dreams.

Baker 06-06-2013 06:48 AM

Quote:

Originally Posted by FF (Post 161073)

"Trapping" the bride aboard has been the termination of some cruisers dreams.

Trapping the bride aboard has been the beginning of some cruiser's dreams!!!

jleonard 06-06-2013 07:11 AM

Quote:

Originally Posted by Baker (Post 161084)
Trapping the bride aboard has been the beginning of some cruiser's dreams!!!

:rofl:

ancora 06-06-2013 11:01 AM

On our Memorial Day raft-up, my 27 year old 2 horse Mariner finally failed after three days of use. Got water intrusion into the head and seized up. As parts are no longer available I will have to find a replacement before our next raft-up in August. As weight is a factor, I'm lookin' at a 2.3 horse air-cooled Honda the lightest motor on the market for it's size.

Sailor of Fortune 06-06-2013 03:08 PM

Quote:

Originally Posted by jleonard (Post 161089)
:rofl:


NICE ONE!:rofl:

Conrad 06-06-2013 03:58 PM

Quote:

Originally Posted by ancora (Post 161133)
On our Memorial Day raft-up, my 27 year old 2 horse Mariner finally failed after three days of use. Got water intrusion into the head and seized up. As parts are no longer available I will have to find a replacement before our next raft-up in August. As weight is a factor, I'm lookin' at a 2.3 horse air-cooled Honda the lightest motor on the market for it's size.

We were looking for an outboard in that HP range and were debating between the Honda and the Yamaha. The Honda weighed in at 27 pounds vs the Yamaha's 37 pounds but we leaned toward the Yamaha as it has a proper transmission and is much quieter, being water cooled.

beachbum29 06-07-2013 10:07 AM

I just realized the 2.5hp Lehr doesn't have reverse. That's a deal breaker for me.

:(

HopCar 06-07-2013 02:47 PM

Beachbum, you need a five anyway!

beachbum29 06-07-2013 03:11 PM

Quote:

Originally Posted by HopCar (Post 161379)
Beachbum, you need a five anyway!

I know. With the 5 I'm going to need the tank. Let me know how much it is.

Thx

FlyWright 06-07-2013 11:05 PM

Quote:

Originally Posted by Baker (Post 161084)
Trapping the bride aboard has been the beginning of some cruiser's dreams!!!

Has anyone else noticed Baker has a little more 'kick in his step" since buying his Carver? It's good to see you back in form, Baker!

Codger2 06-07-2013 11:45 PM

Quote:

Originally Posted by FlyWright (Post 161445)
Has anyone else noticed Baker has a little more 'kick in his step" since buying his Carver?

Not only does he have more kick in his step....he's posting more than ever! :blush:

Baker 06-08-2013 10:05 AM

This boat is somewhat of an unknown to me so y'all are my security blanket!!!!...:)

beachbum29 06-08-2013 10:15 AM

Quote:

Originally Posted by Baker (Post 161507)
This boat is somewhat of an unknown to me so y'all are my security blanket!!!!...:)

You have any pics you can post?

grateful 06-23-2013 07:56 AM

There is a problem in getting the small propane bottles in other countries, and problem in finding parts. Also if traveling in Latin or south america, Yamaha's are the easiest motors to find parts find parts for.


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