Question - RibCraft transom, small crack - Page 3

Top banana · 12 March 2009, 22:32

:d

jace · 13 March 2009, 08:51

Quote:

Originally Posted by Dirk Diggler

What do you over laminate the transom top with? chopped strand by the look of it.

Next time your passing Yeovil, Pop in and I'll show you a boat in build.

Jono · 13 March 2009, 08:54

Quote:

Originally Posted by jace

Next time your passing Yeovil, Pop in and I'll show you a boat in build.

...yeah, you might teach Tubbs something about boat building.

Trolli · 16 March 2009, 20:09

Hi there,

thinking about structural problems on a RIBCRAFT:

The only thing that got absolutly nothing was the Ribcaft and the TRANSOM!
Any questions about structural problems?

Bigmuz7 · 16 March 2009, 20:35

Quote:

Originally Posted by Trolli

Hi there,

thinking about structural problems on a RIBCRAFT:

The only thing that got absolutly nothing was the Ribcaft and the TRANSOM!
Any questions about structural problems?

Yes ..

First ..whilst these pics have been posted before , I wouldnt fancy my chances supposing the transom was made of blooming 'Kryptonite' when 40 tonne hits it the wrong way !!
Second .. that transom looks like it has double knees on it, no wonder its stronger than the op's transom, particularly as its also fitted with a massive spreader plate .. hmm wonder what that suggests ?
Third .. there are no close up photos of the transom to verify what you say .. although I don't doubt it, if the trucks radiator absorbed a sharp outboard leg, and the trailer bounced favourably, whilst its draw bar collapsed absorbing energy too.

kitten · 16 March 2009, 20:37

So is that massive metal plate on the inside of the transom standard then?

jwalker · 16 March 2009, 20:46

Since there's fibreglass and plywood embedded in the front of the lorry. If it's not from the Ribcraft then the actual main lorry impact was with something else so your photos are more than slightly misleading. Silly boy.

It could of course be the lorry which is made from plywood and then I'd be wrong.

bedajim · 16 March 2009, 20:59

Quote:

Originally Posted by jwalker

Since there's fibreglass and plywood embedded in the front of the lorry. If it's not from the Ribcraft then the actual main lorry impact was with something else so your photos are more than slightly misleading. Silly boy.

It could of course be the lorry which is made from plywood and then I'd be wrong.

Back end of the caravan ? on its way to the rib

slimtim · 16 March 2009, 21:04

Quote:

Originally Posted by bedajim

Back end of the caravan ? on its way to the rib

I would say thats about right, the lorry clearly clipped the caravan and then hit the outboard leg on the side twisting it off the transom and buckling the trailer draw bar. A direct straight rear shunt would have certainly smashed the transom before the draw bar buckled, that steel would not buckle easily under direct compression!

Trolli · 16 March 2009, 21:05

Quote:

Originally Posted by jwalker

Since there's fibreglass and plywood embedded in the front of the lorry. If it's not from the Ribcraft then the actual main lorry impact was with something else so your photos are more than slightly misleading. Silly boy.

It could of course be the lorry which is made from plywood and then I'd be wrong.

The main impact on the boat! But what has the "main impact" to do with "misleading"?

Trolli · 16 March 2009, 21:17

Quote:

Originally Posted by bedajim

Back end of the caravan ? on its way to the rib

So you guys got eagle eyes

Not one...two caravans...two cars...and exactly the prop of the engine

And the plate was made of 4mm Alu.

codprawn · 16 March 2009, 23:38

Well it proves caravans are a load of crap and only RIBs should be allowed on the roads!!!

IBWET · 17 March 2009, 07:27

Quote:

Originally Posted by kitten

So is that massive metal plate on the inside of the transom standard then?

I think there are enough Ribcrafts like this out there with no issues for this to be unusual (original post)...I have experience of a similar symptom, on a 2" section of the over capping; it was caused by the design of the transon tappering to the top. A running 6 hp aux gradually worked it way up (getting looser and looser) until the twisting cracked the top capping..I'm not suggesting that's what's happened here, just that the cappings resilience to torque type pressure is limited.I think I would be looking at it as Muz has.

On the crash boat, I definitely find that 4 mm alum plate( is it both sides

) and it's reason for being interesting…would our continental friend eloborate about it?

Bigmuz7 · 17 March 2009, 07:40

On a plus note , and slightly off topic, I am well impressed with these 'snap in' demountable towing brackets, as fitted to this Audi here, and as used by BMW (same design). They are about a £1500 dealer fit, but, you can lift it out of the stow section in your boot & fit it in about 3 seconds, and bingo, its good for 3 tonne. Its a surprisingly simple mechanism, and at first I was dubious about their strength but having used them for 10 years now, I think they're great

Of course the piccy doesnt show if there is any damage closely,(or to the car chassis) but it looks intact.

Kernow Buoy · 17 March 2009, 13:32

Just had my crack looked at

Not a structural problem suggested sikaflex to remedy it. ( wasn't as bad as the crack in the pics and didn't go under engine bracket or the hypalon )

bedajim · 17 March 2009, 13:35

Quote:

Originally Posted by Kernow

Just had my crack looked at

Not a structural problem suggested sikaflex to remedy it.

When did the NHS start using Sikaflex

codprawn · 17 March 2009, 13:37

Quote:

Originally Posted by Bigmuz7

On a plus note , and slightly off topic, I am well impressed with these 'snap in' demountable towing brackets, as fitted to this Audi here, and as used by BMW (same design). They are about a £1500 dealer fit, but, you can lift it out of the stow section in your boot & fit it in about 3 seconds, and bingo, its good for 3 tonne. Its a surprisingly simple mechanism, and at first I was dubious about their strength but having used them for 10 years now, I think they're great

Of course the piccy doesnt show if there is any damage closely,(or to the car chassis) but it looks intact.

I read about someone using one for towing trailers offroad and it just wasn't up to sideways forces. Great on road but not as strong as a Dixon Bate or similar.

IBWET · 17 March 2009, 19:29

Quote:

Originally Posted by Bigmuz7

They are about a £1500 dealer fit, but, you can lift it out of the stow section in your boot & fit it in about 3 seconds, and bingo, its good for 3 tonne.

Must be retrofit at that price if added as a option on a new build (BMW),it's £600.very clever design,however the last one I had was on for three years solid; as I lost the wee keys about ten minutes after picking the car up.

Apparently the car detects impending doom via the hitch if the trailer starts to snake and sorts it out for you..

Bigmuz7 · 17 March 2009, 21:27

Quote:

Originally Posted by IBWET

Must be retrofit at that price if added as a option on a new build (BMW),it's £600.very clever design,however the last one I had was on for three years solid; as I lost the wee keys about ten minutes after picking the car up.

Apparently the car detects impending doom via the hitch if the trailer starts to snake and sorts it out for you..

Ah! you'll be right on that.. price wise..

.. I refuse to buy cars new.. and always haggle these things in on the deal for a nearly new motor

Quote:

Originally Posted by IBWET

Apparently the car detects impending doom via the hitch if the trailer starts to snake and sorts it out for you..

Yes .. I believe that when the electrics see a trailer connected, the telemetry adjusts damping and braking to compensate for wayward back end movement although I must confess how each manufacturer defines this I am not sure.. Isn't there some kind of accelerometer in the vehicle which the airbags system uses to determine time of deployment etc ? .. I think its related to this system somehow