Weed eater engine conversion

[Orphanedcowboy]

This is why I have a problem with him:

Posted 06-23-2004, 01:22 AM

Originally Posted by Roy D. Moss

I am the designer of a lightweight conventional outboard motor, weighs 11and1/2 - 12lbs. It was tested at Mississippi State University as developing 8.8 horsepower at the prop. It is excellent for shallow water use in that you can change the prop depth without changing the incidence of prop, therefore maintaining centerline thrust. It can be built " as new " for under $ 200.00 USD, parts to undertake this project can be purchased virtually anywhere. There is no maintenance to perform. I currently sell the plans for $ 29.95 USD Plus $ 3.95 shipping and handling. I can be contacted at FlyBy750kts@aol.com. I forgot to mention it can be built in as little as two days - Thanks, Roy

Posted 02-23-2008, 11:46 PM

Originally Posted by smoothseas200

Hello Everyone,

I have the plans for this conversion for sale on Ebay. Many thanks to
evlfkrjohn for referring me to this site. This is a proven design, take the time to read the entire ad as it is a bit lengthy but well worth your time. It has been designed as simply as possible. Please see Ebay Ads :
250217316299 and 250217516279, both are my ads and both ads represent the same plans. This little motor will get the job done ! Who ever thought a weedeater could be this much fun !

Thank you,

Dean / jeta2008@netcommander.com

Posted 02-26-2008, 03:04 PM

Originally Posted by smoothseas200

Hello,
I am new to this site and I have posted my Ebay Listing Numbers to purchase the plans for a proven, easy to build, lightweight Weedtrimmer Outboard using a 31cc engine. Anything less is fruitless. I spent a fortune in the design of this outboard. Please see the ads, this is your answer to your problems. This is the design evlfkrjohn was referring to. I am a Aeronautical Eng, so I crunched some numbers and created this little monster. It can handle a 24' sailboat with ease and larger, and cost around $ 140.00 to build as "New".
I wish you the very best, please let me know if I can help.
Sincerely,
Dean
jeta2008@netcommander,com

Posted 03-21-2008, 12:31 AM

Originally Posted by smoothseas200

Hello everyone, I have a time tested proven design that can easily be built just like a brand new outboard for $ 140 - $ 160. I supply parts lists, and the vendors. The plans are easily laid out with drawings, dimensions, and written instructions. After gathering the parts you can build this outboard in 8-10 hours. This is simply the way to go, once you hit the throttle I guarantee you will smile. All "Bugs" have been eliminated, period. A lot of time and money went into the developement to get it RIGHT ! I am selling these plans for $9.95 a set and will be delivered directly to your computer in PDF format, so you can have the plans in a few minutes. Just remit a Postal Money Order for $9.95 made out to R.D. Moss and mail to :

R.D. Moss
261 Julia Circle Apt 15
Sulligent, Alabama 35586

Please be sure to include your email address with your Money Order, as I will send the plans instantly after receipt.

All inquiries please direct to : jeta2008@netcommander.com
Attachment 1960819608

Posted 04-11-2008, 09:15 PM

Originally Posted by smoothseas200

Hello Orphaned Cowboy,
I appreciate your criticism, but if you take the time to look at the gear box you will notice the photo you presented is nothing more than a standard weedeater gearbox turning a very small prop. My design is powerful because of the gear reduction, and is equipped with a larger 3 blade Motorguide machete aluminum prop. It is by far superior to the design you have shown, I know because I built this type during the developement of my final design several years ago and found it to be very low on power. Since you have made such an issue over paying $ 9.95 for my plans, I will offer the plans FREE to anyone that wants them just to PROOVE it is far more superior to the other designs. It is FASTER and more Powerful than any design you may have tried. You build it then come back to post your results for everyone to see.
Order the Plans at : jeta2008@netcommander.com

The Plans are FREE, Get them while you can. Alot of time, money and engineering went into this design. It was developed to achieve the maximum performance from the engine. The power is balanced from the engine to the gearbox, and finally to the large prop for a perfect blend of POWER. I am a Engineer so I know what I'm doing. I worked all off the numbers, rpm, gearbox speed and thrust test in a test tank. It puts out 8.8hp at the PROP !
ORDER THE PLANS ! THEY ARE FREE ! I KNOW MY TIME, MONEY AND EFFORT MEANS NOTHING TO YOU ! SO ORDER THE REAL DEAL NOW ! IT'S FREE ! NO MORE COMPLAINTS OK ? I have sold over 1000 of these on Ebay with NO COMPLAINTS - SMOOTHSEAS200

These are his only post and he did nothing but spam his plans in every post, his initial post was nearly 4 years ago, yet in this thread he is new to the site. The guy is an ass, and got pissed at me for calling on the carpet. I could care less for his plans, he can shove up his........

I don't have a degree, but I still have money and time invested in the one I built and I gave it all away for free. Thats the reason I joined this site was because or the free flowing ideas and the willingness to share ideas. I look at thing differently than anyone else would, new eyes, so to speak. We all have a passion for boats or we would not be here wasting hours of our lives yakking it up with each other.

[Orphanedcowboy]

Something struck me as odd:

Originally Posted by evlfkrjohn

Hey guys, sorry for the slow response but my computer has been down for a couple of weeks and I've finally got it back up! The design isn't mine, I got the plans from livetofly57 on eBay. The plans came with all the info on how and where to get all the parts needed to do the conversion. It is a very nice design and was very well thought out! My nephew is welding up an aluminum foot for me in the same design as a 40lb motor-guide trolling motor to make another conversion. I will contact the seller about posting the conversion again, I would do it myself but I assured him that I would not expose his idea to everyone. But I can say this much, it has a 4:1 gear ratio that is awesome!

I am not throwing evlfkrjohn under the bus, but he did provide me with a seller name, I searched it and he hasn't sold anything on eBay in the last 90 days, if he worked so hard on the plans and they are so fabulous, why isn't he still selling them?

[*Ender*]

Originally Posted by kengrome

He totally ignored both me and my friend, so it seems he is not willing to do what he promises.

Funny, same result here.

[Mark Wo]

First time poster but I have followed this for quite some time and am nearly done with my weed whacker mud motor.

Anyone kow what kind of gearbox smmothseas200 (Dean) used in his design. I know that the motor I built will work as Ripped off put much time and effort into his and I basically copied this with some of my own modifications. I know that the motor would be much better with a 3:1 gearbox but have not found a way to do this. If I wanted a 1.5:1 gearbox I would just use the gearbox on a brushcutter but there are two things wrong with this - it is only a 1.5:1 reduction and it is then angled into the water. My design is for a mud motor, not an outboard motor.

Any help is greatly appreciated.

Mark W

[superstitch626]

humm i wonder if it would be illegal to post his stuff up on here??? does it have a copy right??? i don't even know post some responses

[Mark Wo]

If the design that smoothseas has is different than what has been posted on here previously, I would not post the info not due to copyright infringement but because I wouldn't appreciate anyone posting plans that I spent some time on appearing on a public forum - just me. Copyrights aren't necessarily applied for and assigned, they are immediately granted to certain items.

If there is nothing new, copyright wouldn't apply and he could be the one in trouble. I would like to kow where a gear reduction could be found for the Ripped Off straight mud motor design. Believe me, I have been searching. I found a 3:1 gear reducer that would fit a Honda GX35 but it was over $100 I think. The whole idea here for me is to homebuild one of these things and do so inexpensively.

Mark

[superstitch626]

dude i was looking on ebay and they have some pocket bike motors with a gear reduction built all ready attached right near the motor

[*Ender*]

Originally Posted by superstitch626

dude i was looking on ebay and they have some pocket bike motors with a gear reduction built all ready attached right near the motor

The China gearboxes like the one pictured are 5:1 and reverse the rotation of the engine. Clockwise or RH rotation tends to limit the prop options considerably; but they are cheap!

[Guest625101138]

I would like to see the test data that demonstrates a 31cc petrol trimmer motor can develop 8.8HP.

There is plenty of doubtful or misleading information on this site and that is tolerable providing it is not intended to be used in selling something for a profit. I wonder if Mississippi State University knows their name is being used to back false claims regarding test data.

A 31cc motor would need to be supercharged in the extreme to produce 8.8HP. No way a stock motor could do it. Maybe more like 1 to 2HP. Somewhat more than a good rower could pump out but nothing like a rowing 8 could produce and even that is significantly less than 8.8HP.

This site provides detail on small trimmer motor HP:
http://www.alibaba.com/showroom/Weed_Trimmer.html
These are published by reputable suppliers so will need to stand some test of validity. The published numbers are likely to be slightly higher than what is possible because they would not include fan and shaft losses I suspect. Once you add a gearbox they will be even lower.

Rick W.

[John O`Neal]

Stanton inc. offers a 3.1 /1 gear box that fits on most of the engines used on pocket bike, power boards, small scooters,and motorized bicycles.

[kengrome]

The China gearboxes like the one pictured are 5:1 and reverse the rotation of the engine. Clockwise or RH rotation tends to limit the prop options considerably; but they are cheap!

How cheap, Ender, and where do you get them? Do you have a link to a source for these items?

I would like to see the test data that demonstrates a 31cc petrol trimmer motor can develop 8.8HP.

Don't waste your energy Rick, the guy appears to have posted several lies and now he has conveniently disappeared. Apparently his only motivation is to 'make money' and it seems he will attempt to do so by ignoring things the rest of us value -- like truth and integrity.

[*Ender*]

Originally Posted by kengrome

How cheap, Ender, and where do you get them? Do you have a link to a source for these items?

They run $25-35 bucks +shipping; but I have found them for less at times. Google or search e-bay under "scooter transmission" and you will pull some up with no problem.

The gearbox itself is die cast with spur gears and roller bearings. The unit is sealed with the exception of a vented plug which may or may not need to be addressed depending upon the orientation of the drop in the application. Most I have seen come with a 76mm clutch bell and an sprocket. The sprocket is useful in adapting the splined output shaft to fit various applications; either via chain or by utilizing the hub to adapt to another type connection (turning down the hub and welding part of a deep 8mm impact socket makes a great hex adaptor for 3/8" rod).

[Orphanedcowboy]

I made several runs, and top speed was 3.5 mph on my GPS. I don't know the weight of the boat, but there was a 43 lb battery in the back, a Minn Kota 30 lb trolling motor in there, a cement block(redneck anchor)and my fat azz, 260 lbs worth.The prop is not very efficient, I have several others on the way to test, and I will report back. I couldn't test it on the 14' Alum-weld, as the only aluminum angle I had was not big enough to allow me to C-clamp it to the back of it. I am having to offset plates made to set the engine off the back of the boat about 8", hopefully this will help, if nothing else it will make it more comfortable. Here is the video:



Here is my second version:



Same motor as before, Minn Kota Trolling motor bracket, same type of tiller handle, same prop, and a Expand It Edger attachment

Here is a mud motor style made by Rick Shaw:

Mud Motors by Rick Shaw

Here is his gear box:

[Syed]

if I post here to sellout something? Is it within the forum rules?

[superstitch626]

Orphanedcowboy,
That video was outstanding!!!!!!! when i get back from Iraq i am soooo making one. tell me what you guys think i bought basically the lower end to a 4-7 hp outboard and i am going to buy a pocket bike from eBay with the gear box already on for like $125 do you think it would be hard to attach the lower end to the motor? here are some pics