Shaft issues

[Wesleys Custom RC]

I have a 6 scale that seems to be laboring no matter what prop I use. I thought maybe the shaft did not have enough clearance to the strut from the drive dog. I added more clearance and it seemed to help but it still bogs and dies after about a lap. 1 of the wires on the shaft is higher than the rest and is flat spotted. Could it be binding in the stuffing tube?

 

[Gene Sarda]

A couple of questions; Is that a 1/4" shaft?

Do you have severe bends in the stuffing tube?

What size is the stuffing tube ?

Are you greasing the shaft ?

Not trying to insult your intelligence,just touching all the bases

Gene

 

[dave weagel]

the shaft might be un-winding and bulging under load binding in the tube.

any recent changes before this problem ? carb ? prop ?

try a new shaft if all else checks out

good luck

 

[P THOMAS]

Is that cable winding the correct way? Maybe you have right hand wind shaft, compare it to another shaft.

 

[Wesleys Custom RC]

Is that cable winding the correct way? Maybe you have right hand wind shaft, compare it to another shaft.

No it is wound the same as other cables.

 

[Wesleys Custom RC]

A couple of questions; Is that a 1/4" shaft?

Do you have severe bends in the stuffing tube?

What size is the stuffing tube ?

Are you greasing the shaft ?

Not trying to insult your intelligence,just touching all the bases

Gene

No insult. Yes, it's a 1/4 shaft in a new boat. Stuffing tube is 5/16 .014 and has a little more bend than others of mine but not much. It has a slight down bend to keep the front down.

 

[Wesleys Custom RC]

the shaft might be un-winding and bulging under load binding in the tube.

any recent changes before this problem ?

carb ? prop ?

try a new shaft if all else checks out

good luck

The boat is new and has had numerous issues but it seems to have developed this issue after putting a slight down bend in the strut. To keep the front down. After looking at other used shafts it has a similar wear pattern to them.

 

[Matt Schofield]

Did you change the diaphragm on the carb? Ive had boats go out for a lap and die. Change the diaphragm and good to go.

Sent from my SAMSUNG-SM-G930A using Tapatalk

 

[Gene Sarda]

Is that wear on the shaft closer to the motor or the prop?

 

[Wesleys Custom RC]

Is that wear on the shaft closer to the motor or the prop?

Most of the wear is near the motor.

 

[dave weagel]

I have a 6 scale that seems to be laboring no matter what prop I use. I thought maybe the shaft did not have enough clearance to the strut from the drive dog. I added more clearance and it seemed to help but it still bogs and dies after about a lap. 1 of the wires on the shaft is higher than the rest and is flat spotted. Could it be binding in the stuffing tube?

enough fresh air to the carb ?

exhaust pipe heat trapped inside ?

can you test run without the cowl ?

try a new carb

 

[David Ashcroft]

Couple of tips ,use bigger brass for stuffing tube,and get some sandpaper and wd40 or similar and sand the flex for a while ,,you will notice a difference.

 

[Joe Wiebelhaus]

Remove all the grease, use some light oil, re-insert, feel the rotation for binding, are you using a long brass bushing on the prop end of the shaft ?

 

[David Ashcroft]

Use 11/32" not 5/16".

 

[EmilSkog]

You stated that it developed this problem after you put a slight bend in your strut I would say there is you problem. If you need to move your strut down it should move the stuffing tube downward in a nice smooth angle not a sharp bend that could cause flex cable drag.

 

[Jimwhyte]

Raise the strut, if to deep it'll bog.

 

[Will Gallagher]

Who manufactured the shaft???

 

[SayMikey]

Sponson AOA? are you plowing or dragging the tail? Put a 2716 on it if she wont rev and go 40 mph its the motor

 

[Mike Cathey]

Is that wear on the shaft closer to the motor or the prop?

Most of the wear is near the motor.

Maybe the motor bearings are toast and you are getting some wobble in the crank, Running on the bunk and then laying down on you after some heat gets in the motor sounds like textbook bearing issue,

 

[jwo]

from experience, If everything is in good working order the bogging/dying out after a lap or so tends to be not enough fresh air to the carb. Try running with out the cowl to see if that is the problem. If that doesn't help you may need a new ring. Especially if it has ingested water.