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=Wookie=
08-06-2010, 08:40 PM
Hi All,

I am replacing the springs, hubs, rollers and skids on an older trailer. The existing keel roller mounting points were getting quite rusty and I cut them off while I am preparing to repaint the trailer.

I have 3 single stem 4.5 inch rollers to go back on (front, middle and rear) but instead of welding I was just going to use U-Bolts and a fish plate. Do you think they will be sufficient? It has an Aluminium 4m runabout on it.

http://img689.imageshack.us/img689/5388/img0044xq.jpg (http://img689.imageshack.us/i/img0044xq.jpg/)

http://img708.imageshack.us/img708/8048/img0045d.jpg (http://img708.imageshack.us/i/img0045d.jpg/)

Thanks for any assistance.

The-easyrider
08-06-2010, 09:08 PM
You could always fit some blocks of timber under the yoke if it does want slip down but I would think it will be fine.

Jarrah Jack
08-06-2010, 09:16 PM
Should be no worries at all there. The tinnie is not going to put much strain on them. You could put a mark on them to indicate if there is any slipping but I doubt you'll need it . The u bolts will get rusty quick if they are zinc coated and not gal but they will still last a while even with a coat of rust.
It would probably be better if the top of the u bolt was resting on the frame and not the bottom.

bigjimg
08-06-2010, 10:00 PM
I would go a twin stem bracket with clamp on adjusting tube for each stem and do away with the fishplate ubolt setup.Much more secure that way and no slippage of the stem,both up and down and side to side.Jim

finga
09-06-2010, 07:08 AM
Yep, I'm with Big Jim.
A twin stem roller bracket and 2 bolt on tubes.
In that setup you've got all it'll take is one bolt to come loose and bingo...damage to boat

It'll probably be cheaper too..

If you cannot find the gear near you give Active Fabrications a call at Beenliegh.
They'll send it out.

=Wookie=
09-06-2010, 10:58 AM
Thanks for the comments guys. Might dig out the welder and go the twin stem setup.

dnej
09-06-2010, 11:21 AM
http://www.boatrollers.com.au/92152.gifThis is what you need. Readily available, and no holes in your cross members.

David

Jarrah Jack
09-06-2010, 12:26 PM
If you've got a welder just weld some steel to act as a block and have it touching ther top of the frame. Put one on each side of the bracket. Will be adjustable up but not down but will save more expense and mucking around. Its only a 4 mtr tinnie.