Ribcraft 585 weight?

mflynn1971 · 15 November 2019, 10:08

Hi All,
Id like to know how much you expect a Ribcraft 585 with three jockey seats(one at console) to weigh. Engine is Yam 115(180kg)
Im looking at it as an option for towing long distance behind a car(outback).
I will be adding weight to it with sailing stuff so trying to figure our what Id be starting with.

Thanks, Mike

Orwell boy · 15 November 2019, 11:14

Reckon you should find discussion on here on this subject ,however what i would consider is if you were to buy that boat new it may well be delivered on a 1300kg trailer ,if you stated your needs for extra carrrying capacity or maybe larger fuel tank ,then maybe you may be advised to go 1500kg ,either way i reckon outback will tow 2000kg from memory
i have rc 5.3, 100hp 2 seats ,a frame ,90 litres = 740kg + trailer

mflynn1971 · 15 November 2019, 12:11

Thanks your numbers make sense. Hoping the 585 can come in under 950.. i had searched the forum. Lots of mention of people towing them with small cars but didn't see a mention of weight. Agree on trailer spec. That's exactly what I had in mind. One im looking at has carried dinghys in the past so it might be legal already..haven't seen it in the flesh yet..

Jeff · 15 November 2019, 16:44

I believe Ribcraft are quite a substantial build and if you are buying a new (single axle?) trailer i would certainly go for the max 1800kg (or 1900kg from some)
For comparison. my Cobra 6.0m with a Mercury 150 4S (210kg), the usual rigging incl, anchor, chain, batteries, emergency fuel tank (22ltr) and with 70 ltrs of fuel (1/2 full as general max transport load), lifejackets etc is 1750 kg on a weighbridge .... you will be surprised how much things add up !

Pikey Dave · 15 November 2019, 17:42

Quote:

Originally Posted by mflynn1971

Thanks your numbers make sense. Hoping the 585 can come in under 950.. i had searched the forum. Lots of mention of people towing them with small cars but didn't see a mention of weight. Agree on trailer spec. That's exactly what I had in mind. One im looking at has carried dinghys in the past so it might be legal already..haven't seen it in the flesh yet..

My RC 545 weighs in at 1920kg fully loaded & sitting on a 600kg twin axle trailer. I think 950 is optimistic.

neil.mccrirrick · 15 November 2019, 18:11

I was considering this recently. The weight of the trailer clearly is taken into account with the axle rating. So and 1800kg axle is not carrying an 1800 kg boat. It’s carrying a 400kg trailer and the balance is the boat.

That would seem to me a strong selling point for a light trailer that has capacity to carry more.

I’ve had a quick look about. Not all manufactures provide the trailer weight in an obvious place nor is the ratio marketed least from what I’ve seen

If you are working to a limit this could help. Certainly some manufacturers build to carry s substantial amount on a single axle etc

diver 1 · 15 November 2019, 19:57

I *think* I put mine on a weighbridge and on a Rollercoaster 7 single axle trailer it came out at 1270 kgs. Thats with a Suzuki DF140, 90l fuel tank, 2 jockeys, double console and general boaty stuff.

However I cant find the photo of the weighbridge printout to confirm the date and now I'm wondering if it was actually the previous 5.8m Tornado I weighed instead (lighter boat).

I would have thought on a normal build / single axle setup around 1500 kgs will be about right.

If I find that photo I'll update this

mflynn1971 · 15 November 2019, 20:04

It is strange given the weight quoted on the ribcraft (for a bare bones hull+tubes?) of 390 kg..Even their test data with a Suzuki Df140 quotes a 820kg including engine and fuel and 4 seats.
I'm looking at a second hand model so could weigh it on the single axle trailer i suppose.
I had seen someone here mention the RC 545 weighs heavy about 700kg without the engine..probably why it has a good reputation for comfort.
While i acknowledge there is a custom build aspect to alot of the better rib brands its odd how little weight information is freely available.

Thanks, Mike

mflynn1971 · 15 November 2019, 20:10

Thanks diver 1, I just saw your post. Was the 1270 including trailer? that model is about 360kg so whichever boat it was about 900+ kg.
Mike

diver 1 · 15 November 2019, 21:54

Yes including trailer. I could stick it on the weighbridge monday afternoon to check for sure.

Orwell boy · 15 November 2019, 23:54

My weights were on a extreme 1300kg roller trailer weighing 327 kgs (this was a twin side railed trailer athough now their twin rail seems to start from 1500kg )

mflynn1971 · 16 November 2019, 00:09

Thanks guys. Im looking at the boat tomorrow so will see if i figure out the weight and trailer type.
Mike

Dan Gurney · 16 November 2019, 11:08

Before we ordered the Redbay we went and talked to RC at the Southampton boat show. We had a towing limit of 1800 at the time and they guy told us that a fully rigged 585 would be 2000kg all up if it was a penny and invited us to look elsewhere.

rusky · 16 November 2019, 11:53

Check the VIN plate on the car for the towing capacity to be sure what the maximum is.

mflynn1971 · 16 November 2019, 12:00

2000kg with a twin axle trailer underneath it?

nocando · 16 November 2019, 20:29

6.8 ribcraft with twin axle SBS is just under 2100kg.

HTH

lakelandterrier · 17 November 2019, 11:22

My 585 runs on a Rapide single axle trailer rated at 2000kg according to the plate - Ribcraft supplied.
Trailer is 360kg

Boat has Suzi 140 DF, double console & 4 x single jockey. Boat weight before fuel / gear c. 850kg.

Add fuel 90l (70kg) , anchor, chain, other stuff - mooring lines / warps, flare jar etc...I allow 200kg inc, full tank so c. 1,050kg all up plus trailer= 1,410kg.

LT

Pikey Dave · 17 November 2019, 12:22

Quote:

Originally Posted by lakelandterrier

My 585 runs on a Rapide single axle trailer rated at 2000kg according to the plate - Ribcraft supplied.

Trailer is 360kg

Boat has Suzi 140 DF, double console & 4 x single jockey. Boat weight before fuel / gear c. 850kg.

Add fuel 90l (70kg) , anchor, chain, other stuff - mooring lines / warps, flare jar etc...I allow 200kg inc, full tank so c. 1,050kg all up plus trailer= 1,410kg.

LT

It’s surprising (read frightening!!) how the weight soon adds up. Chuck a coolbox/fishing gear/tender/life jackets/waterproofs/spare prop/spare warps & before you know where you are, you’ve got another 150kg.

lakelandterrier · 17 November 2019, 12:40

Quote:

Originally Posted by Pikey Dave

It’s surprising (read frightening!!) how the weight soon adds up. Chuck a coolbox/fishing gear/tender/life jackets/waterproofs/spare prop/spare warps & before you know where you are, you’ve got another 150kg.

Very true.
If you think you're getting close to trailer / towing weight, you can always carry some of the stuff - cool box, flare jar, clothing etc.. in the car and transfer at launch point.

mflynn1971 · 18 November 2019, 16:39

820kg sounds good.
So Ive just bought the RC 585. Its a 90's model that's been nicely refurbed. Its sitting on a 1300 trailer. So no margin for any additions assuming its even under 1300. Trailer is in good nick and kept well up to date brakes wise etc so might just have to trade it for a 1500 once I've sorted out what the boat weighs ....
I'll report back what it weighs then to close out the thread.
Thanks Mike