Reply
 
Thread Tools Display Modes
 
Old 07-10-2013, 11:54 PM   #41
Guru
 
HopCar's Avatar


 
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 3,503
In post 13 of this thread, Tom brought up a problem he had with his 5.0 Lehr running slow.
I sent an email to the engineer at Lehr who has answered questions for me in the past. Following is a copy of that conversation. I think Rick gets the prize for first right answer. The engineer's answer is in red.

"On one of the forums on the internet, there was a discussion about a Lehr engine that would not maintain full speed after running at WOT for a period of time.
It was a 5.0 running on a small can. Weather was cool and humid. Do you think the little propane can was just getting too cold and the propane wouldn’t come out fast enough?Yes Another theory was that ice formed in the carb.No What do you think?After the small tank is half full, the evaporation is happening in the tank, not the carb or evaporator. The aluminum bottle tray is meant to feed heat to the bottom of the tank to help it evaporate at the necessary rate. But long WOT and cool weather combined it is possible to see this condition on the last little bit of propane in the tank.

I know the 9.9 has a propane vaporizer but what vaporizes the propane on the smaller engines if they are fed liquid propane? 5 hp has evaporator also. But that only takes care of it when liquid is being fed into the system during 1st half of the tank. (small 1lb. tank)
The 2.5 evaporation rate is slow enough even at WOT that an evaporator is not necessary."
__________________
Advertisement

HopCar is offline   Reply With Quote
Old 07-11-2013, 02:48 PM   #42
Scraping Paint
 
City: Fort Lauderdale
Vessel Model: CHB 48 Zodiac YL 4.2
Join Date: Oct 2007
Posts: 3,804
Speaking of propane tanks, have you guys seen this?

PHMSA - Home - PHMSA Orders Recall of Cylinders Manufactured by The Lite Cylinder Company
__________________

RickB is offline   Reply With Quote
Old 07-11-2013, 03:54 PM   #43
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 16,518
Those are not used by most cruisers as you have to take your tank and wait till it gets filled , while a taxi awaits.

UGH!!

A $17 swop at 7/11 or a gas station works loads easier.
FF is offline   Reply With Quote
Old 07-11-2013, 07:12 PM   #44
Guru
 
HopCar's Avatar


 
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 3,503
There has been a lot of talk about it over on the Cruisers Forum where a lot of the long range cruising sailboat guys use them. They like that they are light and don't rust. Unfortunately the company was forced out of business by the recall and there is no where to return the tanks.

Trident Marine, the hose guys, sell a different brand of fiberglass tank but they are sold out. I have one of Tridents 11 pound tanks to use with my Lehr outboard. It's really nice. It's light and it doesn't leave rust rings where ever I set it down.
HopCar is offline   Reply With Quote
Old 07-11-2013, 07:42 PM   #45
Guru
 
tpbrady's Avatar
 
City: Anchorage/Wrangell
Country: USA
Vessel Name: Silver Bay
Vessel Model: Nordic Tug 42-002
Join Date: Sep 2012
Posts: 506
Hopcar,

Thanks for the info from Lehr. When it happened I was pretty sure it was not mechanical, just an operational issue unique to running at WOT with a small tank on a cool day. At WOT a 1 lb bottle quickly gets out of the liquid into the vapor. I also have one of the Trident 11 lb tanks, but hold that in reserve for the Honda EU2000 generator I have converted to propane. The 1 lb bottles are just too convenient for most of my dinghy adventures.
tpbrady is online now   Reply With Quote
Old 07-12-2013, 12:21 AM   #46
Guru
 
HopCar's Avatar


 
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 3,503
tpbrady, how long can you run the 5.0 at WOT on the 1 pound cylinders?
The specs say about 1/2 hour. Is that true in the real world?
HopCar is offline   Reply With Quote
Old 07-12-2013, 11:11 AM   #47
Guru
 
tpbrady's Avatar
 
City: Anchorage/Wrangell
Country: USA
Vessel Name: Silver Bay
Vessel Model: Nordic Tug 42-002
Join Date: Sep 2012
Posts: 506
I would say that was in the ball park, however where I live I think true WOT could only be sustained for 5 minutes and then things would slow down as the bottle cooled off and couldn't meet the propane demand. If I find a nice warm sunny day I may run WOT and time it.

Tom
tpbrady is online now   Reply With Quote
Old 03-19-2016, 05:25 PM   #48
Guru
 
MurrayM's Avatar
 
City: Kitimat, North Coast BC
Country: Canada
Vessel Name: Badger
Vessel Model: 30' Sundowner Tug
Join Date: Jul 2012
Posts: 3,321
Bump...

It's been 3 years now that our Lehr 9.9hp propane 'get home' kicker has been sitting on our swimstep, and it's never once seen duty because of a main engine failure...only getting fired up once in a while to make sure it still works.

So it's gone through 3 north coast BC winters without ever being winterized, and this spring the first "issue" turned up; the flow from the cooling water line started strong, sputtered, then stopped.

I brought it home, put it on a stand, pulled the last section of hose (thinking I might get lucky and clear some obstruction without taking the leg off) and it worked. Whew!

The neatest part of the whole exercise was that I took a propane tank off our trailer which hasn't been used in 7 years, and the Lehr started on the second pull. The tank was probably filled 8 or 9 years ago.

__________________
"The most interesting path between two points is not a straight line" Murray Minchin
MurrayM is offline   Reply With Quote
Old 03-19-2016, 09:49 PM   #49
Guru
 
HopCar's Avatar


 
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 3,503
Propane doesn't go bad or gum up the carb. That is exactly why my emergency generator only runs on propane. I've started my generator once a year for more than ten years and it's never failed to start.

I bought a Lehr 15 about a year ago for a little skiff I built. It has a small battery under the cover and an electric starter. I love it.
__________________
Parks Masterson
www.hopkins-carter.com
HopCar is offline   Reply With Quote
Old 03-19-2016, 09:52 PM   #50
Guru
 
City: kemah
Country: USA
Join Date: May 2015
Posts: 997
Tip 7: Wait until they work the kinks out before buying one.
what_barnacles is offline   Reply With Quote
Old 03-19-2016, 10:53 PM   #51
Guru
 
dhays's Avatar
 
City: Gig Harbor
Country: United States
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 5,080
How do folks secure a propane tank in a dinghy?
__________________
Regards,

Dave
SPOT page
dhays is offline   Reply With Quote
Old 03-19-2016, 11:08 PM   #52
Guru
 
MurrayM's Avatar
 
City: Kitimat, North Coast BC
Country: Canada
Vessel Name: Badger
Vessel Model: 30' Sundowner Tug
Join Date: Jul 2012
Posts: 3,321
Quote:
Originally Posted by dhays View Post
How do folks secure a propane tank in a dinghy?
The most sensible way based on what kind of dinghy you have?

We'll soon be getting a 5hp for our dinghy, which is pretty small, but it beats using oars. We opted for the 5hp because it can either use a tank, or those small canisters used for camping stoves. Somewhere in my website storage folders there's a device for refilling those canisters yourself from a larger tank...then you'd only have to bring several of those on the dinghy instead.
__________________
"The most interesting path between two points is not a straight line" Murray Minchin
MurrayM is offline   Reply With Quote
Old 03-19-2016, 11:15 PM   #53
Guru
 
HopCar's Avatar


 
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 3,503
I carry a thirty pound forklift tank in my skiff. It lays on its side just behind the center seat. I run a couple of straps around the tank and seat.

I also have a 2.5 that I use on an inflatable. I run it from an 11 pound tank that I just sit on the inflatable dinghy deck. I carry a 1 pound can as a reserve supply for the 2.5. It stays strapped into the holder on the engine but not hooked up.
__________________
Parks Masterson
www.hopkins-carter.com
HopCar is offline   Reply With Quote
Old 03-19-2016, 11:19 PM   #54
Guru
 
MurrayM's Avatar
 
City: Kitimat, North Coast BC
Country: Canada
Vessel Name: Badger
Vessel Model: 30' Sundowner Tug
Join Date: Jul 2012
Posts: 3,321
Quote:
Originally Posted by HopCar View Post
I carry a thirty pound forklift tank in my skiff. It lays on its side just behind the center seat. I run a couple of straps around the tank and seat.
So you can scoot on over to the Bahamas on a nice day?!!?
__________________
"The most interesting path between two points is not a straight line" Murray Minchin
MurrayM is offline   Reply With Quote
Old 03-19-2016, 11:25 PM   #55
Guru
 
O C Diver's Avatar
 
City: Fort Myers, FL... Summers in Crisfield, MD
Country: USA
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 4,813
Real happy with my 9.9 HP Lehr. Like that the fuel doesn't go bad just sitting in the tank. Plan to give it a lot use this summer.

Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
O C Diver is offline   Reply With Quote
Old 03-19-2016, 11:25 PM   #56
Guru
 
dhays's Avatar
 
City: Gig Harbor
Country: United States
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 5,080
Quote:
Originally Posted by MurrayM View Post
The most sensible way based on what kind of dinghy you have?
Very true

Quote:
Originally Posted by MurrayM View Post
We'll soon be getting a 5hp for our dinghy, which is pretty small, but it beats using oars. We opted for the 5hp because it can either use a tank, or those small canisters used for camping stoves. Somewhere in my website storage folders there's a device for refilling those canisters yourself from a larger tank...then you'd only have to bring several of those on the dinghy instead.
I just saw that device on Amazon, about $18.00 if I recall. Looked like a great option for that 5hp.

Quote:
Originally Posted by HopCar View Post
I carry a thirty pound forklift tank in my skiff. It lays on its side just behind the center seat. I run a couple of straps around the tank and seat.
Back in college and grad school I worked a lot of warehouse jobs. A 40lb forklift tank sure feels a lot heavier that 40lbs! How tough is it to get refilled?
__________________
Regards,

Dave
SPOT page
dhays is offline   Reply With Quote
Old 03-20-2016, 12:07 AM   #57
Guru
 
HopCar's Avatar


 
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 3,503
Dave I do have to take it to a place that fills forklift tanks. Not all propane sellers have the right connector. The good thing is that propane is usually cheaper at forklift tank fillers. My tank is fiberglass so it weighs less than the metal ones.
__________________
Parks Masterson
www.hopkins-carter.com
HopCar is offline   Reply With Quote
Old 03-20-2016, 01:05 AM   #58
Guru
 
Codger2's Avatar
 
City: San Diego
Country: US
Vessel Name: "Sandpiper"
Vessel Model: 2006 42' Ocean Alexander Sedan
Join Date: Oct 2007
Posts: 5,420
Quote:
Originally Posted by MurrayM View Post
It's been 3 years now that our Lehr 9.9hp propane 'get home' kicker has been sitting on our swimstep, and it's never once seen duty because of a main engine failure...only getting fired up once in a while to make sure it still works.
If I ever get another dinghy, it will be powered by a Lehr.
__________________
Codger2

My passion for improving my boat(s) exceeds my desire to constantly cruise them.
Codger2 is offline   Reply With Quote
Old 03-21-2016, 10:02 AM   #59
Guru
 
City: Fort Myers
Country: USA
Join Date: Jul 2013
Posts: 954
What is the weight of the 9.9 and 15hp models? Thanks!
Marlinmike is offline   Reply With Quote
Old 03-21-2016, 10:09 AM   #60
Guru
 
MurrayM's Avatar
 
City: Kitimat, North Coast BC
Country: Canada
Vessel Name: Badger
Vessel Model: 30' Sundowner Tug
Join Date: Jul 2012
Posts: 3,321
Quote:
Originally Posted by Marlinmike View Post
What is the weight of the 9.9 and 15hp models? Thanks!
LEHR 9.9 hp 4-Stroke Outboard Engine | LEHR

LEHR 15 hp 4-Stroke Outboard Engine | LEHR
__________________

__________________
"The most interesting path between two points is not a straight line" Murray Minchin
MurrayM is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 12:04 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012