Reply
 
Thread Tools Search this Thread
 
Old 29 December 2004, 18:37   #11
Member
 
Country: UK - England
Town: Farnborough
Boat name: Eleven
Make: Arrow
Length: 8m +
Engine: 557cu, 700hp
Join Date: Jul 2003
Posts: 1,255
Was it sitting at Drivers Wharf a while back?
__________________

__________________
Matt is offline   Reply With Quote
Old 29 December 2004, 18:57   #12
Member
 
Country: UK - Wales
Town: Southampton
Boat name: DynaMoHumm/ SRV/deja
Make: Avon8.4, 5.4 & 4.777
Length: 8m +
Engine: Cat3126 Yam 90 &70
MMSI: 42
Join Date: Dec 2003
Posts: 6,556
yes it still is It's a red steel trailer!
__________________

__________________
Here it comes again, I don't stand a chance
Soul possession, Got me in a trance
Pullin' me back to you - Deja Voodoo
Rogue Wave is offline   Reply With Quote
Old 29 December 2004, 20:23   #13
Member
 
Country: UK - England
Town: Farnborough
Boat name: Eleven
Make: Arrow
Length: 8m +
Engine: 557cu, 700hp
Join Date: Jul 2003
Posts: 1,255
So, um, that would be the one with the hydraulic reservoir that's empty then?
__________________
Matt is offline   Reply With Quote
Old 29 December 2004, 20:31   #14
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,962
Nasher, my last trailer had home made hydraulic drum brakes. Seizing on was not a problem but the cast iron drum corrosion always wore out the linings quickly and, originally, the cylinder pistons corroded easily. I made brass pistons, machined the recesses for the rubber boots a little larger diameter than standard and incorporated an O ring outwards of the hydraulic seal. Filled every space with brake grease and that lot sorted the problem.

I used a tandem master cylinder from a Vauxhall Cavalier which was connected to a hand brake lever which was pushed by the hitch. No problems at all with that. It had a waterproof front boot on it. The hand brake was applied by connecting the winch rope to the top of the hand brake lever. Although, I can count on one hand the number of times I needed it.

I reckon standard cast iron discs and the usual chromed caliper piston would last, unseized, about 5 minutes after saltwater immersion. Brake pads normally contain iron as the abrasive and in normal use they cause corroding of the disc so, in salt water, I'd bet they rust on in no time. I believe there are moves afoot to remove the iron as an abrasive in the future.

I have made caliper pistons from both brass and stainless and both worked fine in normal road use. You could probably make some nice bronze ones for the sea.

I'm just entering the world of 'real' trailer brakes and there design amazes me...which Bozo designed them. As an aid to convienient reversing, they don't work if the trailer is moving backwards ... and they are leading and trailing shoes design!!! So what does the trailing shoe do? Idiots.

As an aid to anti-seizing, I've modified the system not to use cables and the actuation levers are slightly longer to allow the brakes to be used in their unadjusted state. I realise there is a greater travel required but this is acheived by a wee modification at the hitch. The adjustment screws are replaced by stainless ones. The cams I've just greased up to see how they last.

I intend to investigate linings which can be riveted to the shoes and, if they are available, I'll make stainless shoes. It should only have to be done once so not too bad a job.

I'll be interested to hear how you get on with your modifications.
__________________
JW.
jwalker is offline   Reply With Quote
Old 30 December 2004, 04:32   #15
Member
 
Nasher's Avatar
 
Country: Other
Town: Principalite d'Chaos
Boat name: The Nashers Revenge!
Make: Ocean & Bombard
Length: 6m +
Engine: Suzi DT200EFI, DT9.9
MMSI: "Mmmmm SI" she said!
Join Date: Jan 2004
Posts: 4,147
Thanks Guys, some interesting comments.

Rogue. Completely agree with your ideal of having a transport trailer and a launching dolly, unfortunately unless I move the boat to permanent storage by a slipway itís not practical for me.
I did think about building a big piggyback system similar to the ones the Dingy guys use, but discounted it on grounds of additional weight.

JWalker. I was planning on remaking any calliper pistons in Stainless to extend their life, but bronze would obviously be better, thanks.

Timboli. Itís an interesting point about reversing into a space, Iíll try going in too far and pulling out a bit in future. (Fnarr, Fnarr).

As mentioned, Iíll probably collect the bits over the coming season and fit them next winter, so might adapt my ideas along the way.
The ideal will be to find a Ďspareí axle second-hand that Iíll strip down and build up in the garage ready to just swap over when itís ready.
Anyone know of an axle sitting about with wrecked Brakes etc?

For the time being Iíll do what I can with the drums. Iím going to drill an extra hole in the top of the back plates and make up some spray heads to go inside with short lengths of tube sticking out the back. Iíll then permanently run two pieces of Hose via a ĎTí Piece back to the rear of the trailer ending in a standard hose connector.
This way I can flush with fresh water easier than trying to aim the hose between the drum and back plate.

I might also come up with a Quick lift system. Over-centre axle stands with a scaffold pole lever so that both wheels are off the ground, I can then give them a quick spin whenever I check up on the boat.


Nasher.
__________________
RIBBED For extra pleasure.
Member of the ebay Blue RIB cover club.
Member of the Bombard 380 Aerotec club
Nasher is offline   Reply With Quote
Old 30 December 2004, 05:01   #16
Member
 
Country: UK - England
Town: Nutbourne
Boat name: Renegade
Make: Porter
Length: 6m +
Engine: 140 Tohatsu
MMSI: 235022904
Join Date: Dec 2003
Posts: 1,195
Nasher
Nip down to Keydell Nursery in Horndean and have a look at the micro irrigation kit.There are loads of very small jets with different spray patterns which may be usefull for sticking thro' the backplate.

If you want any help/ideas/drawings etc give me a shout. I would be interested in looking at this with you.

See you at Church next month and we can chat.
__________________
Mark H
"A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools" Douglas Adams
Mark Halliday is offline   Reply With Quote
Old 30 December 2004, 05:14   #17
Member
 
Nasher's Avatar
 
Country: Other
Town: Principalite d'Chaos
Boat name: The Nashers Revenge!
Make: Ocean & Bombard
Length: 6m +
Engine: Suzi DT200EFI, DT9.9
MMSI: "Mmmmm SI" she said!
Join Date: Jan 2004
Posts: 4,147
Good Idea Mark.
Keydell is about 5 minutes from my house in the car. We must be able to come up with a better solution to this issue, both for making the best of drums and Discs.

Looks like the Churchillian will be on Monday the 10th Jan. Iíll post a separate thread to remind everyone.

Iím at work at the moment, and my desk jotter is now covered in drawings of Hub assemblies, Discs, callipers etc.

Nasher.
__________________
RIBBED For extra pleasure.
Member of the ebay Blue RIB cover club.
Member of the Bombard 380 Aerotec club
Nasher is offline   Reply With Quote
Old 30 December 2004, 05:34   #18
Member
 
Hightower's Avatar
 
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,855
If you went the "home made" disc approach (which I like), wouldn't there be insurance and accountability problems if you had an accident with such a modification?

Andy
__________________
Hightower is offline   Reply With Quote
Old 30 December 2004, 05:39   #19
Member
 
Nasher's Avatar
 
Country: Other
Town: Principalite d'Chaos
Boat name: The Nashers Revenge!
Make: Ocean & Bombard
Length: 6m +
Engine: Suzi DT200EFI, DT9.9
MMSI: "Mmmmm SI" she said!
Join Date: Jan 2004
Posts: 4,147
Not if one of the qualified Engineers amongst us does an engineers report stating how in their opinion the new brakes are safer than the old ones.

Insurance companies like Engineers reports, I've been modifying Motorcycles for too long not to be aware of how they work.

Nasher
__________________
RIBBED For extra pleasure.
Member of the ebay Blue RIB cover club.
Member of the Bombard 380 Aerotec club
Nasher is offline   Reply With Quote
Old 30 December 2004, 13:59   #20
Member
 
Country: UK - England
Town: Towcester
Boat name: TBA
Make: Delta
Length: 6m +
Engine: Suzuki 175
Join Date: Nov 2002
Posts: 328
could dixon bates disc brake user post please?

Hi
Discs do seem the way forward - so quite keen to have some feedback from some of the first users of Dixon Bates disc brake system.

Are there any on Ribnet?

pb
__________________

__________________
Paul Beaurain is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 01:53.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.