Weed eater engine conversion

[Mark Wo]

Looks like a twist grip throttle of some kind. Looks like it integrates a kill switch as well. Is this something that can be purchased or did you rig it yourself?

Mark

[Erich_870]

Originally Posted by Mark Wo

Looks like a twist grip throttle of some kind. Looks like it integrates a kill switch as well. Is this something that can be purchased or did you rig it yourself?

Mark

It's a throttle for a pocket bike. There are a bunch of different styles to choose from.

Erich

[rifraf]

kinda got the throttle workin, am workin on a new version to try and eliminate any interference from the weed eater starter coil, suggestions would be welcome.
current version is a bit less jittery than this one.
http://www.youtube.com/watch?v=_yVGg1eaUvo

[rmenasco]

Erich 870,

Could you tell me the part number for that clamp? I am trying to find it on the website and I can not find it.

[Erich_870]

Originally Posted by rmenasco

Erich 870,

Could you tell me the part number for that clamp? I am trying to find it on the website and I can not find it.

Here you go. http://southwestspeed.com/?sec=view_part&id=3733 They make them a challenge to find.

Erich

[rmenasco]

Thanks for finding the part for me!

[rmenasco]

Erich,

One more question. Where did you get the part to attach your handle to the shaft?

Robert

[Erich_870]

Originally Posted by rmenasco

Erich,

One more question. Where did you get the part to attach your handle to the shaft?

Robert

I used the bracket that came with it. The brush cutter has a larger "U" shaped handle then the string trimmer.

Erich

[rmenasco]

Well I bought the 49cc from monster scooter so I did not get any of those parts. Do you or does anyone know where I can find these parts from. I have looked and I have not had much luck.

[rifraf]

rmenasco what parts are you referring to? have found the recycling centers or dumps great places to find old weed eaters, and from these you can get all sorts of parts. fuel tanks, throttle cables, kill switches, 45 degree angle gearheads for props, spare 1 inch shafts and clamps to modify to hold motors etc on. not to mention motors that even work. second choice would be ebay, looking for weed eater or scooter parts, then there are other links that have recently been posted as well by erich and others.

if you just have a motor and nothing else some of the above parts should come in handy

[rmenasco]

Rifraf,

I was referring to the part that a lot of people are using from these brush cutters. I am looking for the part that attaches the steering controls to drive shaft.

I have posted a photo below that was posted back on page 20 that shows the part that i am looking for.

Can anyone help me find this part?

[jg451]

Hi Ward,
I'm reminded of the use the Southeast Asians make of auto engines on their riverine craft. They simply put a long shaft with a prop on the business end of the engine and a sterring grip on the front the whole works simply pivots in an oarlock on stern. Shallow water? no problem! A real fish frightener. Of course you'd have to mind it every moment, waving something like that about may put the fear of god in your neighboring fishermen. On second thougth the lawyers here vs. Thailand may mitigate against its use. Seriously though, a cage around the prop, ala florida, would probably make it safe enough. A 6" or 7" speed prop would be the initial ticket. A chain to secure it to the boat would be in order too. Have fun!

[drustanos]

Here is my junkyard motor for a canoe. I don't have a flatback so I had to make this bracket:



Here is the motor conversion:



The throttle cable needs to be shortened up, but I wanted to test it before doing that. The prop is just 1/8 steel cut and bent in a vice - I hope to upgrade it but the point was to make this for almost no $.

I took it for a spin on a lake last night with my parents 17' canoe loaded with 3 people. It was pretty slow but good enough for trolling, surely it will be faster with only 2 people in the boat and installed on my 15' canoe.

Thanks to all the people in this thread that posted pictures, they gave me some great ideas.

[Mark Wo]

How does that underwater exhaust work? Always wondered if it makes a big difference in the noise of these motors.

Mark Wo

[drustanos]

How does that underwater exhaust work? Always wondered if it makes a big difference in the noise of these motors.

It makes a huge difference. My exhaust is kind of short so when you go over waves it comes out of the water and you sure hear it.

The motor is way quieter than a stock weedeater, though some of this is reduced rpm.