What does a fully rigged and ready to sail Sprint 15 Weigh?

[Steven Tunnacliffe]

Hi Guys

What does a fully rigged and ready to sail Sprint 15 Weigh?

Charles Watson and I have been having a discussion about what the total weight of a sprint 15 is, in the details given on our web site the towing weight is given as 175 kg I assume this included the trailer as this converts to 27 stone in weight

The measurements given do they take into account beams, rudders etc.

My best guess is that the entire boat weighs around 80 kg which is around 12 Stone in old money.

come on give me some specs as it could be important if i build a box for my trailer big enough to carry gear for two boats tents wheel clamps and a case of lager or two do I build it from Oak, teak or thin ply

[Robert]

Yes, I have often wondered about this too. Jeremy evans says 104kg (http://www.yachtsandyachting.com/boattests/sprint15.pdf). The question is, how does he know? I expect Bob will tell us sooner or later.

Interestingly, Draycote Water SC think 105kg but that must be why theirs are a bit slower and they rate una rig at PY917! (http://www.draycotewater.co.uk/Dart15_tech_specDoc2.doc)

Watch this space...

[Bob Carter]

The original Panthercraft literature states 104Kg as the approximate sailing weight but this will be in una-rig form. So I reckon the 175 Kg trailing weight is suspect and needs to be removed for our website.
The jib kit & other stuff might add a Kg or 2
Cheers
Bob

[Charles]

I've guestimated trailing weight at something like:-

Hulls 70kg
Beams 20kg
Mast 20kg
Rudders 10kg
Tramp 2kg
Sails 5kg
Sheets, blocks 10kg
Cover 5kg
Trolley 10kg
Conbar & ext 5kg
Praddle/sponge 1kg
+ odds & ends

So that’s about 158kg

[Bob Carter]

Charles
Your numbers are unbelievable. I know that the hulls are 32Kg each and that the one-piece mast is 11Kg so you are 15Kg out on just 2 items. It is much better to start with the sailing weight and just add on the extras.
So you could say:
Sailing weight 104Kg
Jib Kit 2Kg
2-piece mast 1.4Kg
Cover 5Kg
Trolley 8Kg
So the basic trailing weight is likely to be about 120 Kg but then many of us load other things in the trailer like tools, spares, spare wheel, jack, which increase it dramatically.
I think it is safer if we take the trailing weight off the web site and just state the sailing weight.
Cheers
Bob

[Robert]

There you go - I knew it would be worth waiting. I reckon you ought to weigh one Charles. The ball is in your court. I reckon they must soak up some water because mine always feels a bit heavier on retrieval than it did when I launched it.

[Frank]

Mine always feels heavier after lunch rather than after launch !

[George Love]

The last time I weighed mine with all the other kit in the box old sails, spare wheel, tools, spare battens, spare wirework, mattress and pillows, TOG 11teen duvet, etc., etc., etc., the answer I got was ''double hernia'' and not more than 26 MPG!!

[Robert]

That's not too bad for warp factor one, George. What do you get at sub-light speed?

[Robert]

come on give me some specs as it could be important if i build a box for my trailer big enough to carry gear for two boats tents wheel clamps and a case of lager or two do I build it from Oak, teak or thin ply

What will your tyres take, Steve (it's written on the sidewalls)? You could always add an extra axle and some brakes or use carbon fibre to costruct the box or chat up Steve Sawford to sponsor you a nice fibreglass one at a discount with lots of advertising on it, provided that you go to lots of events and always park it outside the home club's clubhouse.

[capella]

The hulls of my old barge weighed 34.9 and 35 kg last time i had her pulled apart,is this just weight gained over years or did old boats start heavy?

[Steven Tunnacliffe]

Didnt think this question would raise so much interest so given a little simple maths from all this info two boats with all the kit that is needed for a two day event no covers and non essentials plus the weight of a trailer 110 kg gives a combined weight of around 370 kg, (58 stone on old money) the trailer gross weight is 500 kg giving me 130 to play with for box and contents.

As for tyres I have shod trailer with 145x10C 8 ply Trailer/truck Radials, and using the Chart and info on inflation and gross weight etc Charles has found looks like my tyres can take just short of 600 kg at a pressure of 32 psi which did'nt seem much to me as my car says 42psi in the rear tyres if towing (maybe thats for a weekend Gypsy Box though).

so I dont think I need another Axle though you had read my mind on that one Robert.
Steve Sawford is a nice guy but discount box with advertising it probably a non starter at he needs to pay the bills just like the rest of us.

[Robert]

It was just a thought Steve, and yes Mr Sawford is a nice guy. You've got enough payload to spare for a galvanised box I would think but you'd probably get more space for your money if you make a wooden one. Don't forget the old adage though: "space = junk". I recently cleared my box out as I carry stuff that I could possibly need but don't really. Then I forget whereabouts in the trailer I put it and waste time looking for it if I do want it. Then I have to put everything back again - more time wasted. This accounts for me being reliably late at the start line when I go to an event. Recently I have taken to leaving shrouds and sheets etc in place (if not attached to the mast), placing the mast foot first on the support and keeping the cover on for towing. So long as things are carefully placed I don't have to secure them as the cover does that and the air flow off the top of the car holds everything down in place. Just take the cover off, slip the hounds fitting forward of the mast ball, move the mast back off its support and onto the ball, attach the hounds, raise the mast and Bob Carter's your uncle!

Good luck with your plans.

[Charles]

Steve

As I said somewhere, my box 8'x4'x2' ish, weighed 50kg when I made it, a little more now it too has taken on water!

But at that size 80 kg is swallowed up quickly and you could soon be over weight even with spring cleaning a la Robert, however it gives you a lovely big box to fill when Ben's skint & can't afford the entrance fees!

[Robert]

(maybe thats for a weekend Gypsy Box though)

Hey don't knock my caravan! Not everyone agrees with Jeremy Clarkson...