Sprocket hub to start an outboard with a hand drill

[meyerboy]

Has anyone ever seen or heard of such a thing?

 

[fhhuber]

Might work if the engine is small enough.... But it would be easy to break your wrist holding the drill if trying something too big.

A drill may or may not be able to turn the engine fast enough. People have run into that issue when they tried it on RC model (gasoline or "glow") engines.

You'd need a one-way bearing a bit larger than the ones we use in RC model helicopter starting.

I won't say its impossible, but its not going to be the easiest thing to make work.

 

[bruceb58]

Not a chance.

 

[gm280]

meyerboy, Isn't that really asking a drill to do more then it can? Unless you are gearing it down to get more torque out of the drill, corded or cordless, I can't see it turning over any size OB engine myself. And if you are going to rig up something to gear it down, isn't that then actually a starter motor? JMHO!

 

[racerone]

Check with your local hydroplane club.......Those guys have stuff that works like a charm.

 

[meyerboy]

meyerboy, Isn't that really asking a drill to do more then it can? Unless you are gearing it down to get more torque out of the drill, corded or cordless, I can't see it turning over any size OB engine myself. And if you are going to rig up something to gear it down, isn't that then actually a starter motor? JMHO!

That's exactly what I need... a starter motor for small outboards. When I rack a 2 hp (let's say) I will fog the cylinder to keep it loose, then when I recommission the oil will require maybe 15 pulls to burn off so the motor will fire. I think possibly a 4hp would be the biggest flywheel I would ever attempt to spin with a drill.

 

[fhhuber]

2 hp is pretty easy to do.... and the common RC heli one way bearing will handle that. We use hand held electric starters on up to 50CC (appx 6.5 hp) 2-stroke gas engines.

Now it becomes a matter of adapting from the drill (or model aircraft starter) to the flywheel.

 

[Scott Danforth]

15 pulls on a 4hp motor - maybe back off on the fogging oil. Plus it should take about 30 seconds to get 15 pulls in on a motor that small.

 

[GA_Boater]

Meyerboy - How often do you try to start a fogged motor?

If you have difficulty because of the fogging oil, remove the spark plug and yank on the pull start a few times to clear the oil. Put the plug in with a few drops of pre-mix in the hole first and a couple of more yanks and the motor will start - As long as it's tuned up. No inventing needed,

 

[Bayou Dave]

You just need one of those tools they use to start Indy cars! :lol:

 

[funk6294]

You could make something like this....

 

[meyerboy]

You could make something like this....

holy cow, I gotta get me one of those !!!! I love it.

 

[meyerboy]

Meyerboy - How often do you try to start a fogged motor?

If you have difficulty because of the fogging oil, remove the spark plug and yank on the pull start a few times to clear the oil. Put the plug in with a few drops of pre-mix in the hole first and a couple of more yanks and the motor will start - As long as it's tuned up. No inventing needed,

I have 83 outboards, all running (but one) and try to run each one in the tank at least once a year. I am old(er) now than I was when I started my "hobby" (illness)
and I don't have the shoulder I use to have. As much as I love little outboards, I need to wind-down and re-home about 40 of them.