briggszuki

[igotit]

I got bored
140cc briggs with steel flywheel,unknown year 9.9-15 suzuki.
Steel mount,steel 2 peice coupling.
Need to have 1 coupling half bored to 7/8.
Coupling weights 6 lbs,motor weights 9 lbs,lower unit weights 21 lbs.
Motor is rated 5.5 flbs torque,heavy coupling should increase torque.

 

[igotit]

Coupling made and installed,gotta build a tiller handle next.
I may just throw on my 7 hp engine.....but im curious to see how well the lil 4 hp will do first.

Coupling made,everything welded and bolted.

 

[Sea Rider]

Is there a operating max rpm range when at full throttle for that engine ?

Happy Boating

 

[igotit]

Engine is safetly rated for 3600 rpm

 

[steelespike]

Assuming a 2.08 gear ratio 3600 rpm 9" prop 15% slip calculates to about 12 mph.Thats assuming motor can make 3600.

 

[igotit]

Tiller handle almost done

I made tiller long,plan on lots of standup driving.

 

[igotit]

Mounted up the 7 hp,just gotta wait for throttle....and a boat.

 

[igotit]

Finally got a decent 14x4 heavy duty rivited hull with papers.
Gonna clean carb tonight and try to test run over the weekend.
Hope all goes well and motor meets my expectations.

 

[igotit]

6mph at 1800 rpm with 3 adults....not bad at all.
Took her out for a 1 mile cruise untill a storm rolled in.
Im impressed. Cheap and reliable power.
I got offered $500 for it before i even launched it,i may take the cash.....but i really like this setup.

https://youtu.be/D3PqKWpxyAU

 

[igotit]