Richard Brooksby wrote:

Michael Moore wrote:I have a Coromandel but last year I had a Corribee. They are both bilge keel. The mast positions are the same in relation to the waterline but NOT to the CLR as the Corribee has a larger skeg making the CLR further aft.

Ah, that's news to me. Thank you!

Do you think this gives another option for improving the Coromandel's balance: extending the skeg forward? It's an interesting thought. So far I have collected these:

1. Extend the rig forward (e.g. Emmeléne's split rig)
2. Rake the mast forward (by moving the foot back)
3. Move the mast (usually into the front window)
   
4. Extend the rudder (as done on Ekaterini)
5. Extend the skeg forward

I believe raking the mast is quite easy to achieve and will be trying it quite soon. I should be able to get 5°, which should bring the CoE forward by about 7m/2 × tan 5° ≅ 31cm.

My corribee had a large skeg, which may have been added as the earlier Corribees had no skeg! I shall try your 2. rake mast forward and 5. extend skeg forward.

Let us see!

Richard Brooksby wrote:

Spence Mooney wrote:First off the Coromandel's mast position is further aft than the production Corribee junk. They have the same sail. We have both in the yard and I have been able to compare.

Are you sure about that?  Take a look at http://imgur.com/IcCkXEY where I've overlaid a picture of Mingming with the Coromandel rigging diagram. The masts appear to be in the same position relative to the hull.

More than one Coromandel owner has told me that they think the mast is too far aft. One owner got round the problem by making a larger rudder.

I believe that was Robin Blain's Ekaterini. He sent me a picture and you can see the extended rudder at http://imgur.com/X9maNY1

I have a Coromandel but last year I had a Corribee. They are both bilge keel. The mast positions are the same in relation to the waterline but NOT to the CLR as the Corribee has a larger skeg making the CLR further aft.

Spence Mooney wrote:First off the Coromandel's mast position is further aft than the production Corribee junk. They have the same sail. We have both in the yard and I have been able to compare.

Are you sure about that?  Take a look at http://imgur.com/IcCkXEY where I've overlaid a picture of Mingming with the Coromandel rigging diagram. The masts appear to be in the same position relative to the hull.

More than one Coromandel owner has told me that they think the mast is too far aft. One owner got round the problem by making a larger rudder.

I believe that was Robin Blain's Ekaterini. He sent me a picture and you can see the extended rudder at http://imgur.com/X9maNY1

@Arnel/@Spence: Looks very nice indeed! Mast seems fairly far forward. I think I recall this is not a junkrigged Corribee out-of-the-box but a conversion.

@Chris: engine out of the water is on my list for the next few months. Siskin is now back at the yard in Huizen (NL) - I'll enlarge the motor opening to accomodate the motor + propellor to be out of the water. Bit like a outboard version of the old Drascombe Drifter. Maybe even close up the bottom opening. I sail in and out of port most of the time. Furthermore I will add a sculling position that will do away with most engine usage anyways. I sculled my Drascombe Gig  most of the time too.

When I look at Richard's presentation of his hebridian on Tammy Norie (also a Coromandel) he uses large rudder inputs on the port tack too. He does not agree with me though that the difference is that big. You can watch this video here.

Scrolling through the clip you can see the big rudder inputs Tammie requires on the port tack.

I received great input from Paul McKay too. Maybe I am a confused soul but to me it seems that his aerojunk setup has a lot going for it. It allows me to bring the CE a long way forward (dealing with the Coromandel luffing tendencies without moving the mast) and get the shape of the sail almost to the perfect wing shape without going overboard on material usage, complexity and cost. And it would be a great opportunity to further test this setup. Maybe the aerojunk setup on the top batten / jiblet batten is more complex. Have to look into that.

So my list of things to do would be:

(1) get engine out of the water

(2) setup a rig with a CoLR / CE further forward, with a bigger lead

Other things i'am missing?

Looks very nice! Seems like quite a lot of camber - do you know how much was designed in, Arne?

Chris