Displacement / weight question

[Marionete]

What happens to the PHRF 7.9 rating when a boat originally equipped with an inboard replaces it with an outboard?

I have read that Tiara had 200 pounds less ballast on the inboards, so if the engine is pulled and replaced with an outboard, you could end up with a net loss in weight of 130 pounds after calculating the addition of 70 pounds for an outboard and hardware -

[Tom Elsen]

That, sadly, is very much up to your local PHRF board.
The following answers are (all) possibilities:
- Something unknown
- Something insignificant
- Something significant
- Nothing at all

Maybe the above is a bit biased. However, it is none-the-less true. As I've said before "All PHRF is local PHRF."
As a Class Association, we have no say in what your local PHRF board does. If they want to force you to sail with your board down at all times....they can. If they want to rate your boat 20% lower than any other 7.9 in the country...they can. If they want to make you lash a truck tire to the top of your mast...they can. That's just the way it is.

[Marionete]

Thanks Tom.

Fortunately on the Chesapeake, the 7.9's have a standard (base) rating, then add 3 second increments for pole penalty, oversized sails etc or subtract for prop gear and roller furling.

The 7.9 class hands out a weight credit allowance - and I've never been sure how significant that is. It seems like all the regular class winners are outboards motor equipped.

My theory here is that an inboard version converted to outboard could potentially have a slight weight advantage under PHRF if you really want to get down to the last 130 pounds. I think that 484 - Horizon (Fleck) was an inboard-now-outboard conversion but could be mistaken.

[Tom Elsen]

It all depends on exactly how the local PHRF regs are written.
If they require you to sail in class specs, then any 7.9 sailing as an OB would be required to sail at 4600lbs. The IBs would be required to sail at 4400lbs.
If they don't require class specs, then you're quite right a converted IB might have a weight advantage. But keep in mind that there is significant weight variance within the set of OB boats, more than the 130lbs that you've calculated. It is possible to find OBs that weigh less than 4400, without their class-required additional ballast.

[Gregg]

FYI - PHRF-NE - IB = 174, OB = 168

We have had a bit of a debate about the board up/down. The one answer I have seen is that if you sail the boat with a ODR (one-design rating) then you can do whatever class rules allow. What remains to be seen is if they then would want a class certificate or something to prove you were racing the boat as a one-design.

I have the inboard and have been doing okay with the rating. Not great, not horrid. There are days I sail above the rating, and then the days I don't.

Hope this helps,

Gregg

[dave]

As stated many times in the past, get or download a copy of your LOCAL PHRF by-laws and read them..............................CAREFULLY! Most everything is there, but sometimes not. In our area the board must be kept down at all times ONLY IF it's required to make the boat self righting. That's not the case with the 7.9 so we can raise the board with no rating hit.

[Tim Bosma]

FYI Lake Mich PHRF OB = 165, IB = 168

[Jeff Bonvallet]

The PHRF for Lake Michigan is 165 for OB and 171 for IB. You can look it up on LMPHRF.org

[dixonwj]

West Florida PHRF penalizes any boat removing an inboard 6 sec/mile

[Marionete]

Chesapeake Bay PHRF:

Inboard rating: 174 ( with folding prop)

Outboard Rating: 171

[dave]

That's strange..............................................

PHRF rating adjustments are usually divisible by 3.

[Marionete]

Dave;

both numbers are divisible by three - problem is just that you don't know Washington DC math!

[dave]

I was wondering how long it would take for someone to chime in!

Heck man, the white house says that we have to spend like drunken sailors to get ourselves out of debt. If that REALLY worked in the real world, I'd be RICH instead of in DEBT!!!!!!!

[Marionete]

Perhaps the 7.9 class shoud put up a slate of members to run for office! The BOZOs in DC can't seem to figure out much of anythng except how to print money and spend money it doesn't have.

There's a gunkhole near Reagan National Airport just outside of DC that is home to a number of shallow draft sailboats - so you could airlift your 7.9 right into a slip. The Potomac is a little shallow but the 7.9 would make out OK with the board raised a bit. I can just see the shingle now: Congressman Captain Dave

Oh, and by the way, DON"T FORGET TO BRING SOME RUM!

[dave]

I wouldn't make a "good" politician: I say what's on my mind, I'm honest and I call a spade a spade1

The main problem with ALL elected officials is that they are not spending their OWN MONEY and they don't have to show a profit. The ONLY time that the majority start to use even an iota of sense is when re-election time comes around. Just like now: the dems have majorities in both houses of congress and could pass ANYTHING that they choose to pass, but those who are coming up for re-election next year are running like the rats that they are form the sinking ship of socialism!!!!