Mountain Buzz banner

1 - 17 of 17 Posts

·
Registered
Joined
·
388 Posts
Discussion Starter #1
Looks like there's a new player in the propane powered category. I believe that Tohatsu is supposed to be a pretty reputable brand. Perhaps they will be a better alternative to the low quality Lehr.

https://onlineoutboards.com/tohatsu-propane-outboards.html

I have been thinking about getting a Lehr, but this changes things.

Any thoughts about what size shaft? I have an NRS frame but I need to buy the frame rails and motor mount and a bigger propane tank.


Sent from my iPhone using Mountain Buzz
 

·
Registered
Joined
·
267 Posts
Not Andy but here is my research on the Tohatsu. They are making one motor a 5 hp in 15, 20 , and 25 inch shaft. The 20 and 25 inch only come with the sail pro option which includes a high thrust prop and a 5 amp 12 volt charger. The motor is identical mechanically to the 6 hp with a change to the cylinder head and fuel supply system. The motor is supposed to run 5 hours on a 11 pound cylinder at wide open throttle. This is much less fuel efficient than a gasoline motor but there are trade offs in not having to use gasoline.
I have one on order in 20 inch shaft and will let you know when I get a chance to do a test run. I have the 6 hp gasoline version of this motor and have had no problems with it so was willing to take a chance on this new technology.
 

·
Registered
Joined
·
267 Posts
I have received myotor and the first run in a test tank is favorable. Compared to my gasoline motor of the same type there are much less exhaust odor and very little oil in the water of the test tank from the exhaust. After breaking in in on a boat I will report my impressions.
 

·
Registered
Joined
·
267 Posts
I have about 5 hours on the motor at this point and am still in the process of breaking it in. First impressions are that it runs about like a gasoline powered motor, it takes a few pulls when cold to start, needs to be choked for a while until it warms up.
The best thing is the lack of exhaust odor, much cleaner burning than a gas engine. The throttle response seemed a little tricky going from idle to running, it stalled a few times until I learned to increase it more quickly that my gas motor, other than that I am happy with the motor.
It does use more fuel that a gasoline engine I would estimate about twice the amount. I got about three hours of running from a small 5 pound propane cylinder, but that was running slow speeds during the break in period. I would guess you could get about 8 to 10 hours from a 11 pound twice that from a 20 pound at 1/2 throttle.
 

·
Registered
Joined
·
267 Posts
Update on the Tohatsu Sail Pro 20" long shaft motor. I now have about 15 hours on the motor and have no problems with it. It does take a few more pulls to start when cold than a gasoline motor, usually about 6 to eight, but started and ran fine.
On a run from Lee's Ferry to the Glen Canyon dam and back it used about 10 pounds of propane pushing a 10' dinghy against the current upstream running between 1/2 and full throttle, and about 1/2 throttle downstream. I was loaded down pretty heavy with the dinghy. I am thinking that pushing a bunch of boats downstream at half throttle should use about one pound per hour.
Almost no exhaust odor is a big plus in my opinion.
I will have a report after a October Grand Canyon trip as we will use it to motor out below Mile 240 pushing a stack of rafts. I will post a report when I return.
 

·
Registered
Joined
·
499 Posts
Thank you for the beta. I look forward to the grand test. I am seriously looking at buying this. What size is it? Horse power?
 

·
Registered
Joined
·
267 Posts
They only make it in the Sail Pro model, 5 hp 15 20 or 25 inch shaft, I have the 20". The Sail Pro has a high thrust prop and battery charger standard. They are mostly selling it as a sailboat kicker motor.
 

·
Registered
Joined
·
568 Posts
Not to diss the Tohatso in any way. I just want to give our experience with propane outboards.
After reading about them on MB, we bought a used Lehr 5 hp long shaft from a guy in Michigan that had used it for about 15 minutes. I think, at the time they were the only propane outboards available. When we got it it wouldn't start. I called Lehr and the owner(I presume) explained that since it had been shipped on it side and hadn't been run in a while, it would need to be primed. I'm not familiar with all of the nomenclature of propane motors, but there was a steel cap on the carb with a small hole that one needed to stick a paper clip in the release extra propane into the intake. I followed his directions and the motor started on the second pull. It will usually will start on the second or third pull if I follow the paperclip procedure.
In Sept. of '16, my wife and I used in on a Diamond down after the rest of our group took off at Diamond Creek. It was the hit! From 243, we used about 5-6 lb of propane to PF. On our April/May '17 trip with 4 rafts and our cat barged together, from 240 to 279, we used a 10 lb cylinder. It was litterly on fumes as we stopped at the beach there.
I highly recommend that you get a tiller extender so you can stand on your dry box or whatever to keep and eye out for sand bars.
The Lehr does not have a battery charger(which for our use isn't needed) or probably a high thrust prop. It gets the job done though. We had plans to use it on Deso this month, but family issues got in the way.
 

·
Registered
Joined
·
211 Posts
I was jealously thinking about your motor while rowing all the flat water on Deso last week. Definitely going on the wishlist.
 

·
Registered
Joined
·
499 Posts
Funny story. I chipped a very obvious bridge near the front of my mouth. It exposed the metal under belly of the crown. My smile looked pirate-ish. The wife and I went back and forth, not against each other but with each other, on whether to fix the bridge or buy a small outboard. We chose the bridge. At least I'll have a clean smile while I row flatwater or into the wind.
 

·
Registered
Joined
·
267 Posts
Not to diss the Tohatso in any way. I just want to give our experience with propane outboards.
After reading about them on MB, we bought a used Lehr 5 hp long shaft from a guy in Michigan that had used it for about 15 minutes. I think, at the time they were the only propane outboards available. When we got it it wouldn't start. I called Lehr and the owner(I presume) explained that since it had been shipped on it side and hadn't been run in a while, it would need to be primed. I'm not familiar with all of the nomenclature of propane motors, but there was a steel cap on the carb with a small hole that one needed to stick a paper clip in the release extra propane into the intake. I followed his directions and the motor started on the second pull. It will usually will start on the second or third pull if I follow the paperclip procedure.
In Sept. of '16, my wife and I used in on a Diamond down after the rest of our group took off at Diamond Creek. It was the hit! From 243, we used about 5-6 lb of propane to PF. On our April/May '17 trip with 4 rafts and our cat barged together, from 240 to 279, we used a 10 lb cylinder. It was litterly on fumes as we stopped at the beach there.
I highly recommend that you get a tiller extender so you can stand on your dry box or whatever to keep and eye out for sand bars.
The Lehr does not have a battery charger(which for our use isn't needed) or probably a high thrust prop. It gets the job done though. We had plans to use it on Deso this month, but family issues got in the way.
Thanks for the info, I checked my owners manual for the Tothatsu and it has no priming function mentioned. It does have a device that shuts off the propane flow when the engine isn't running. I expect this is why it takes a few extra pull to start, nice to see your fuel consumption numbers, I plan on taking a 20# just in case.
 

·
Registered
Joined
·
568 Posts
I was jealously thinking about your motor while rowing all the flat water on Deso last week. Definitely going on the wishlist.
Hey Andrew, a belated Happy Birthday! Sorry, things were hectic for us at that time.

Pam found our motor on CL. It was a killer deal. About $1050 with shipping. The seller had sold his sailboat and the new boat owner had an outboard already. It took a little while to find one with the long shaft. There are plenty of 2.5 hp Lehrs out there. Some folks want almost as much for their used 5 hp Lehrs as a new one would cost.:???:

Hope your Deso trip was a good one. We would have been launching on Sat. Our first time down. We'll definitely put more effort into getting on next year.
 

·
Registered
Joined
·
568 Posts
This is just general info for the thread. YMMV.
The NPS will let you haul your motor from LF down to DC for use below DC. But, really, who'd want to? it's a 50-60 lb motor and another propane cylinder to carry for 226 miles.
On the '16 trip, PRO was providing the food plan. (as a side note, it was pretty sweet to just show up at LF and load food into your boxes. It doubled the trip cost we normally pay, but we were just ready for a less stressful and preparatory pre launch experience. Plus, it wasn't our trip and that's the way they roll) We had made arrangements for PRO to get our motor and other gear we'd need below Diamond Creek. They were picking everyone else up there to take them back to Flag. Cost...free.
On the '17 trip, I called PRO to see if they'd be at LF on the date when we launched. Turned out they were supplying a western PA group who were also on a 21 day schedule. They charged us a $100 to get the motor, store it and bring it to DC. We would have checked with other outfitters if dates didn't work, but have had a pretty good experience with PRO over the years.
We'd do it again in a heart beat.
 

·
Registered
Joined
·
267 Posts
I pushed a stack of 8 boats in the Grand Canyon from mile 240 to Pearce Ferry mile 280 this week with the 5 hp Tohatsu propane. The motor was run at half throttle. We averaged a little over 6 miles per hour and used almost 20 pounds of propane. Very satisfied with the motor.

Sent from my SM-T800 using Mountain Buzz mobile app
 
1 - 17 of 17 Posts
Top