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Old 29 January 2016, 07:35   #1
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how many rollers?

hey all,

I'm am debating adding more rollers to help loading/unloading of the rib.

It is a 6.8 ribcraft on an SBS 1800el 2 wheel trailer. It currently has 8 pairs of rollers as per piccy.

the boat is impossible to push off and in order to launch i need to tap the brakes to start it moving, which i may just keep doing as it reduces the risk of a roll off mid slip if the strap and safety cable breaks.....unlikely i know but............

with that in mind, SBS offer a 10 or 12 roller option (i.e 5 or 6 pairs each side of the trailer) and the price isn't too different, i will need to measure to confirm i can move the rear swing beam forward enough to do this but it SHOULD be fine.

Given i have 4 pairs all round now i don't see the point in doing 5 all round when 6 is an option.

the question is really, is this worth doing as it isn't really a cheap upgrade, if it is an upgrade!?!. i need to buy 4x bars at about 35 each plus 8 wobble sets at about 22 each from SBS. not sure if adding essentially another 4 rollers each corner is going to make THAT much difference?

thoughts?
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Old 29 January 2016, 07:41   #2
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You might make it worse, you're increasing the friction in the system.
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Old 29 January 2016, 07:43   #3
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Is the problem that the slip way has a very shallow angle rather than a problem with the trailer. I assume that this trailer was provided by Ribcraft who would be known a one of the better rib companies.
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Old 29 January 2016, 07:53   #4
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Have you slackened off the swing arms slightly ,,, so they swing/pivot nicely as the boat moves back? It helps lift the bows more and improves gravity assistance :-) I had the same issue and it worked on my SBS ,,,, previously they remained almost horizontal until baby was almost off!
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Old 29 January 2016, 07:59   #5
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hey folks,

the rib/trailer are not from ribcraft direct. the rib, 3 years old now, was sold to the first owner minus a trailer (stacked) so i bought the SBS from JBT on their recommendation. it is a brand new trailer though from Jan 2015 when it was delivered to me.

the swingbeam at the back is quite loose, the one at the front isn't i must admit as i spotted it last time i was out, given the back was okay i assume it isn't the cause, but worth looking at for sure.

the slips are not too bad but it doesn't matter what ones i use, it won't come off on any of them. it has never been an issue as i just bump the brakes and off it comes....i may just stick with doing that.

i am not sure as it is a deep V if the front ones are the issue more than the back as they kind of grab the hull in a way, i simply don't know.

i am concious of spending X and making it worse, better the devil you know as they say.
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Old 29 January 2016, 08:54   #6
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Quote:
Originally Posted by dubrus View Post
hey all,

I'm am debating adding more rollers to help loading/unloading of the rib.

It is a 6.8 ribcraft on an SBS 1800el 2 wheel trailer. It currently has 8 pairs of rollers as per piccy.

the boat is impossible to push off and in order to launch i need to tap the brakes to start it moving, which i may just keep doing as it reduces the risk of a roll off mid slip if the strap and safety cable breaks.....unlikely i know but............

with that in mind, SBS offer a 10 or 12 roller option (i.e 5 or 6 pairs each side of the trailer) and the price isn't too different, i will need to measure to confirm i can move the rear swing beam forward enough to do this but it SHOULD be fine.

Given i have 4 pairs all round now i don't see the point in doing 5 all round when 6 is an option.

the question is really, is this worth doing as it isn't really a cheap upgrade, if it is an upgrade!?!. i need to buy 4x bars at about 35 each plus 8 wobble sets at about 22 each from SBS. not sure if adding essentially another 4 rollers each corner is going to make THAT much difference?

thoughts?
dubrus

its hard to tell but is the bottom rollers resting hard against the chine rails with a sort of downward pressure making it bined if that makes sense it should just roll off in my experiance 6m boat.

cheers
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Old 29 January 2016, 09:14   #7
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hey bud,

no the rollers are bang in the middle of the chines, the back ones are the same when the chines reach them
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Old 29 January 2016, 09:24   #8
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If you have any adjustment left on the cradles, try raising the front rollers & lowering the rear, you might be trying to push the boat "Uphill" when getting it off the trailer.
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Old 29 January 2016, 09:55   #9
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not sure about your trailer but mine was as dave has said a slight up hill on the keel rollers up to the winch post the rear carrier swinging arm [very loose] front carrier just rollers swing up rights solid but i could move the rollers on the front with the boat in position but the rear were solid against the hull so all the boat weight on the keel rollers and the back carrier with the bow hard into the winch post front carrier seemed just a guide.

cheers
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Old 29 January 2016, 11:10   #10
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Can confirm the boat is slightly downhill on trailer. Water drains to back at tow height and normal rest. Could raise it more perhaps though but I think need new brackets as in top hole already as I have hit the keel loading before on rear beam....came poorly setup.
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