How to remove Ruddertwin starter knob?

[Monte NZ]

A while back Tubs, you very kindly answered my question on how to remove and replace the starter knob on my Ruddertwin

Unfortunately I have lost your reply with those clear photos ……..I printed it off, but I’m sorry to say I cant find it……..I’ve tried searching the club website, but no luck.

Could you please  post the info again and this time I will make sure I don’t lose it!!

Thanks in advance

Monte NZ

[Tubs]

To remove the knob, just drive it out.
There is a flare at the bottom that
will collapse. You will need reposition
the flare when you put it back in. You
probably can only get by doing this once.
If you want to disassemble the knob
to make replacement parts it has a
countersunk hole in its top.
The top end of the pin is flattened,
to hold it together and smoothed off.
The slot in bottom would lead one to
believe it’s a screw, but it’s not.
Tubs.

A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.

[Monte NZ]

Great! Thanks very much Tubs for your help again…..much appreciated!

Monte NZ

[joecb]

The slot in the head of that shaft sure is a curiosity. In keeping with my (usually valid) hypothesis that engineers and manufacturers don’t add features to parts for no reason or at extra cost…  wonder how the slot got there? I have only two guesses… 1 –  there is some sort of key or tab on the shaft to engage in the hole to keep the shaft from spinning should the swage loosen? The slot allows rotational alignment at time of assembly. 2- the shaft is made from a hardware stock shoulder screw that came with the slot for “free” .

Ideas ???

Joe B

[Tubs]

The shaft/knob assembly needs to spin in
the sleeve as you turn the flywheel. My
guess would be the slot was used for the
finishing of the knob. After the shaft was
peened, the slot could be used to spin the
shaft/knob assembly to remove the excess
material of the shaft and possibly the
finish shaping of the knob. Then the
completed assembly could be inserted in
the flywheel and the sleeve flared to
hold it in.
At the time these motors were built I
would agree that you won’t find
anything that isn’t necessary.
Today? Not so much.
Tubs.

A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.

[Author]

Posts