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 Post subject: adjusting the rollers so the boat runs off well
PostPosted: Tue Mar 12, 2019 7:48 pm 
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Joined: Sun Feb 16, 2014 1:41 am
Posts: 239
Location: Brisbane
Hi guy :D long time no see
well skybird is now up for a refit new paint and other things
five years is a long time to play in the sea and sit in the sun
at the same time need to look at the trailer as well

but you know i never adjusted the rollers to help the boat run off better
so what is the best set up ?

regards atles (richard ) after this long on the site i think it time to use me name :lol:

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atles
Investigator #133 sky bird
brisbane


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 Post subject: Re: adjusting the rollers so the boat runs off well
PostPosted: Wed Mar 13, 2019 9:31 pm 
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Joined: Mon May 25, 2009 7:10 pm
Posts: 833
Location: Sydney
Yes, the rear rollers or pads need to be lowered for launch and retrieve. Not only does it reduce the forces, but also you stand to "oil can" the hull, which means popping the hull inwards, if you don't do it.

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Ian B
Investigator 563 #50 Yara
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 Post subject: Re: adjusting the rollers so the boat runs off well
PostPosted: Mon Mar 18, 2019 11:05 am 
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Joined: Sun Aug 18, 2013 11:33 am
Posts: 137
Location: Townsville, Qld
Hi everyone, long time stuck on land! (except sailing 8ft dinghy)

I'm rebuilding my trailer..a work in progress. not sure if it will work but converted my 3 aft keel rollers into 3 double tilt rollers (so 6 rollers there now). My idea is if there are twice the rollers there should be half the loading on each one. Just want the boat to launch and retrieve easily in future. (it often got stuck before, and bent some of the aft keel roller axle pins sometimes, allot of keel weight bears on them)

My other idea to reduce loading on them while retrieving, was to extend my draw bar by about one meter. The trailer should then be deeper in the water, so hoping the boat will float on higher than before,, so less strain and winching too perhaps?

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Andrew
Investigator #9 Teria
Townsville


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 Post subject: Re: adjusting the rollers so the boat runs off well
PostPosted: Mon Mar 18, 2019 11:22 am 
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Joined: Mon May 25, 2009 7:10 pm
Posts: 833
Location: Sydney
Hi Andrew.
The weight of the boat should be on the keel, and not the hull. If you are bending the shafts of the keel rollers you probably are not tilting the trailer. Tilting reduces the load on the end roller. And the load on the keel!
You do not have to tilt the trailer, but then you need to go deeper in the water, so more of the load is taken by bouyancy of the boat.
See
http://www.investigator563.com/forum/vi ... 09ee#p1686

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Ian B
Investigator 563 #50 Yara
Save CO2- go sailing!


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 Post subject: Re: adjusting the rollers so the boat runs off well
PostPosted: Fri Mar 22, 2019 10:48 am 
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Joined: Sun Feb 16, 2014 1:41 am
Posts: 239
Location: Brisbane
i have two adj rollers at the front base should i make them a lot higher so they help
push the boat down :?: and yes the pads at the back are a pain :roll:

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atles
Investigator #133 sky bird
brisbane


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 Post subject: Re: adjusting the rollers so the boat runs off well
PostPosted: Fri Mar 22, 2019 5:43 pm 
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Joined: Wed May 27, 2009 1:07 pm
Posts: 714
Location: Lake Macquarie
No Atles you don’t want them higher. I lower them all well down even if the boat tilts a little side to side at the ramp it’s better to have any restrictions removed. It will slide off.

To those reading this fresh, I have replaced all my timber bunks with new treated pine ones over the years and NOT reused the original ribbed plastic skid material. Marine carpet is much kinder on the hull and does not scratch it like the plastic. Tip 8-) use a good correct sized ring spanner to lower your bunks or rollers. You will do this often and you want them tight for road transportation when you raise them again. (Don’t forget to raise them again ) The right ring spanner will prevent rounding the bolt head and give you good purchase to lock em up tight. Shifters are an invention of the devil, who, it is not widely known owned shares in a bolt factory.

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Ozzie
Investigator #143 "SPRITZIG II"

The Mariner - “It’s too strange here. It doesn’t move right." ... Enola - “Helen said that it’s only land sickness."
Waterworld (1995)


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 Post subject: Re: adjusting the rollers so the boat runs off well
PostPosted: Fri Apr 19, 2019 10:44 am 
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Joined: Sun Feb 16, 2014 1:41 am
Posts: 239
Location: Brisbane
thanks ozzie i try it :D

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atles
Investigator #133 sky bird
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