Caledonian Yawl

[inwe]

As stated before as an experiment I have decided to extend the tiller in order to gain a little control over the mizzen. This entailed laminating an extension and bolting it atop the tiller. Like all good experiments if it doesn't work or creates other problems so be it, but it's an experiment!  Here are some photos .






Obviously still being under cover the masts are not erected so I can't show the mizzen in place maybe a bit later when the boat is back on the trailer and can be pulled out. Then in May I can see how she behaves in spite of negative comments.

[Chris Waite]

Go on Richard....

I think I can imagine, but why the downward curve?

Chris W

[Paul H (admin)]

Chris Waite wrote

I think I can imagine, but why the downward curve?

Is it because the mizzen clew, normally at the bumpkin, has to sit below the rudder top?

Paul


PS: Wayne planned the ultimate mizzen experiment:

[inwe]

The position of the change in direction of the mizzen sheet , where the sheet changes from the horizontal to the vertical up to the clew, remains the same as with the bumpkin. Hence the downturn. Sling in aesthetics 'cos I like a good aesthetic.
If I am travelling astern at speed then I need some de-elevation to keep the stern down!!!

Richard

[inwe]

A couple of photos of the control for the mizzen ,I put the mast and sail up this afternoon looks ok and operates ok. Will wait until it's on the water for the real test.

[Chris Waite]

Looks really good to me Richard

Onto the water!

CW

[inwe]

Having tested this arrangement I found it to work very well. You can virtually forget about adjustments , it's done for you. No extra pull on the tiller and no clatter from the bumpkin. It does , however, make a hell of a long tiller !

Richard

[inwe]

In preparation ( I had a few minutes on my hands, ha-ha ) I thought that before October when I fetch Calluna out from the saline liquid I had better check over the trailer. Now the trailer wheels have sealed bearings !!**? . Oh yeah ! Felt a bit awkward , lumpy, not running smoothly. But they're sealed. Quick consult with my friend at Indespension. Yes they're sealed but just use your heavy hammer , very large spanner and knock the hub off. So lump hammer in hand strong screwdriver in the other knock the hub cap off. Next problem is the hub nut. this is put on at about 250ft lbs. A 32mm hub nut. Enter large spanner at least 400mm in length to get the torque and lump hammer. It does crack after a fair bit of punishment. Whack the back of the hub and the hub comes off. Lo and behold the reason for a rough bearing - very very little grease. No wonder it feels rough. Take them both down to see Steve and straight away he winces and says that's why I don't like sealed bearings, the other reason is they cost so much to replace!!! Ouch. So he does me a favour and takes them into their workshop, presses the old ones out and new ones in. What about the water seals? "They don't really get replaced as they don't really do anything, they are only secondary seals."
The other big question is that of grease!! They come pre-greased. Ha-Ha. If you call that greased! You can't add any. If I hadn't got dealer discount I would have bought a new set of ordinary hubs.

Moral of the story is don't bother with sealed bearings. Yes they are sealed - against anymore grease being added. You can't inspect them in the normal fashion, they are a pig to get off, and they're bloody expensive to replace ( 3-4 yrs less if you constantly dunk them.)

Richard

[Paul H (admin)]

Richard,

I have often wondered how sealed bearings stayed sealed for our lifetimes.

DeWalt sell a 18V 3-speed 1/2in driver that goes up to 950nm, with a breakaway torque of 1650nm. My towbar fitter raved about electric torque drivers, "crank them up, finish with a torque wrench".

Paul

[inwe]

The short answer is whose lifetime? And what has the Dewalt got to do with it? It probably wouldn't even touch the hub nut. Most moderately sized torque wrenches won't go up to the required 280 neutons.

Richard

[alopenboat]

My understanding has always been that they are sealed for the life of
the bearing. When the seal goes the bearing is dead.


On 17 Sep 2019 at 13:50, inwe [via UK HBBR Forum] wrote:

>
>
> The short answer is whose lifetime? And what has the Dewalt got to do
> with it? It probably wouldn't even touch the hub nut. Most moderately
> sized torque wrenches won't go up to the required 280 neutons.
>
> Richard
>
>--
Sail when you can, row when you must, motor only
when you have to be at work in the morning.

Alastair Law
Yeovil, England.
<http://www.little.jim.freeuk.com>

[Paul H (admin)]

Richard,

Let me elucidate - the DeWalt is a serious impact wrench with 3 speeds up to 130 Nm, 450 Nm and 950 Nm. So it could easily undo hub nuts, which are often in the 250 Nm to 300 Nm torque range.

It's built to compete with airline impact guns at a DIY price:

https://www.screwfix.com/p/dewalt-dcf899n-xj-18v-li-ion-xr-brushless-cordless-impact-wrench-bare/3399j

As I already have three 18V batteries I'm tempted to get this one to make life easier working on cars and trailers. My towbar fitter showed me his 450 Nm SnapOn impact wrench, he was clearly proud of it and said it saved a huge amount of time and bleeding knuckles.

-Paul

PS: The SnapOn wrench is expensive, but popular with mechanics.

[inwe]

And has nothing to do with MY thread!

[inwe]

A piece of good news for the new year. Last season ended with me loosing one of Callunas rowlocks! Nothing outstanding here. But why one I cannot remember mislaying it so had to come to the conclusion that somebody "lifted" it. Just get a replacement I hear you say, ah yes but these were Davey's bronze , square rowlocks to fit 11ft sweeps. Replacing oars would cost me a lot of money plus a new set of rowlocks, and me spending my money on a newbuild. So I phoned Classic Marine up with hope that a replacement could be found somehow - I did know that Davey's no longer made this pattern. They said that worst case scenario a new one could be cast. That would cost but we could take a pattern off the one I still had. Investigation would take place as Classic would inquire of Daveys if the pattern still existed( would save postage of a bronze back to Suffolk. I phoned Classic M today !!! No they did not have the pattern but while the guys at Davey's warehouse were rummaging around trying to find a now defunct pattern they came across one bronze square rowlock which is now mine.!!! Made my day. No body throws away casting patterns though I have known foundries throwing patterns away so they must be around somewhere.

Richard

[Timmo]

Good result!

On 20 Jan 2020, at 23:36, inwe [via UK HBBR Forum] <[hidden email]> wrote:

A piece of good news for the new year. Last season ended with me loosing one of Callunas rowlocks! Nothing outstanding here. But why one I cannot remember mislaying it so had to come to the conclusion that somebody "lifted" it. Just get a replacement I hear you say, ah yes but these were Davey's bronze , square rowlocks to fit 11ft sweeps. Replacing oars would cost me a lot of money plus a new set of rowlocks, and me spending my money on a newbuild. So I phoned Classic Marine up with hope that a replacement could be found somehow - I did know that Davey's no longer made this pattern. They said that worst case scenario a new one could be cast. That would cost but we could take a pattern off the one I still had. Investigation would take place as Classic would inquire of Daveys if the pattern still existed( would save postage of a bronze back to Suffolk. I phoned Classic M today !!! No they did not have the pattern but while the guys at Davey's warehouse were rummaging around trying to find a now defunct pattern they came across one bronze square rowlock which is now mine.!!! Made my day. No body throws away casting patterns though I have known foundries throwing patterns away so they must be around somewhere.

Richard

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[inwe]

It arrived today- yippee.
Richard