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Old 22-04-2008, 04:40 PM   #1
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Boat Bungee Straps?

Does anyone know where i can get a bungee strap to go around the leg of my outboard?
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Old 22-04-2008, 05:07 PM   #2
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B & Q do it. Or some motor factors that deal with commercials. It is also used for roping and sheeting on trucks..
G.
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Old 22-04-2008, 06:14 PM   #3
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Any good chandlery or they even sell it on ebay in black at a cheap price. U want 8mm really.
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Old 22-04-2008, 10:52 PM   #4
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Question

Maybe a silly question, but why do you need these bungees if you got powertrim? Think ive heard it before, just forgot it.. Thanks
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Old 23-04-2008, 09:07 AM   #5
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No i mean is there a marine "ready made Bungee" on the market?

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Old 23-04-2008, 09:25 AM   #6
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I've been wondering this too, why do people do that with bungees?
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Old 23-04-2008, 09:55 AM   #7
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It holds the leg back tight against the hydraulics and takes any slack out of the system which helps to prevent hammering.
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Old 23-04-2008, 04:02 PM   #8
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ahh, cunning!! That 'hammering' effect had bothered me in the past... never put two and two together to realise this is why they do it! Think i might do this on my cat... may save killing the engine mounts as i did on the ring!

Thanks Kitten!
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Old 24-04-2008, 12:23 AM   #9
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"takes any slack out of the system which helps to prevent hammering."
Surely there shouldn't be ANY slack in the engine mounts?
Using a bungee is covering up the real problem - i.e. worn mounts, hydraulics, bushes?
Never had a problem "hammering" on my 2.5 Efi 260.
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Old 24-04-2008, 08:26 AM   #10
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Long time ago in a galaxy far far away when the first XR2 came out there was a change in the design of the ram system. Old 175 was fine with it\'s twin rams but the 150 suffered a bit of sloppyness. It was last selection dependant. so if you were trimming in it was fine no play, trimming out it would have small movement. No amount of rebushing , bleeding, ect would remove it. I would make a trim selection just over running a tad then triming in to the desired setting, Hyd then held it in place with no slop.
This may or not be valid still but mention for info
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Old 24-04-2008, 09:46 AM   #11
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Not required on most good merc hi perf legs (unless you have a boat that can out handle the saddle,then it helps)
But most of the good engines have bad saddles and the trim does not hold leg down so we add bungy !! Get good quality from a chandlers at least 8mm dia !! It does work very well.

Bob
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Old 24-04-2008, 01:53 PM   #12
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Quote:
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unless you have a boat that can out handle the saddle,then it helps

Bob
Referring to anyone in particular Bob? ........ and 130's on a snow plough?!?!?!?!

Mr Rocksteadycrew - Ah the elusive search for 100% perfect engineering - please forward the name of your engineer!

In all seriousness in a mono RIB designed for proper offshore conditions like ours you can easily drive the boat very hard indeed - my navigator can confirm this! - even the slightest movement (given normal engineering tolerances) will get shown up, and if you can reduce that by even the smallest amount then it's worth it.

IMHO a total waste of time in normal leisure use - just puts extra wear on the trim pump!
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Old 24-04-2008, 04:07 PM   #13
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IMHO a total waste of time in normal leisure use - just puts extra wear on the trim pump!
On second thoughts, maybe i won't try that then! Saying that, my XR does seem to have rather a large amount of slack on it's mounts... it is getting on a bit now!
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Old 25-04-2008, 12:49 AM   #14
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Referring to anyone in particular Bob?
Only one bannana who breaks the saddle I know of.....
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Old 30-04-2008, 05:53 PM   #15
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If you are running in Offshore conditions you want to bungee the motor regardless of what make it is, It keeps everything in check from hammering as posted previously, I also recommend 9/16" mounting bolts made from (174PH) hardened stainless steel instead of the 1/2"! Also double if not triple the bolts on the bottom of the clamp, Two of the bolts (One on each side) incorporating a SS I bolt for your bungee to attach. Would not hurt to double the top bolts if room to do so.
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Old 30-04-2008, 06:06 PM   #16
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When your heading toward the checkerd flag you dont want a broken clamp bracket slowing you down!!
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Old 01-05-2008, 08:15 AM   #17
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Quote:
Originally Posted by Links View Post
If you are running in Offshore conditions you want to bungee the motor regardless of what make it is, It keeps everything in check from hammering as posted previously, I also recommend 9/16" mounting bolts made from (174PH) hardened stainless steel instead of the 1/2"! Also double if not triple the bolts on the bottom of the clamp, Two of the bolts (One on each side) incorporating a SS I bolt for your bungee to attach. Would not hurt to double the top bolts if room to do so.
Interesting lifters in photo 3 - what make are they and which boat do you run them on with what motors?

Oh yes last question are they reliable?!?!?!
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Old 06-05-2008, 07:59 PM   #18
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Interesting lifters in photo 3 - what make are they and which boat do you run them on with what motors?

Oh yes last question are they reliable?!?!?!

That is one unit and it is bullet proof!! Triple Merc 280's on a 320 Velocity, It is a Porta Bracket, they make a single engine bracket or as wide as you can bolt to the back of the boat!
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Old 06-05-2008, 11:17 PM   #19
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Quote:
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That is one unit and it is bullet proof!!
I wouldn't say something like that unless Cookee has tested it as he is pretty good at breaking lifters and saddles
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Old 07-05-2008, 09:36 PM   #20
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I wouldn't say something like that unless Cookee has tested it as he is pretty good at breaking lifters and saddles
Thanks for the Burty!

Yes it is true that I am a bit of an equipment tester!

Links has that triple rig been raced? Leisure use is a lot easier on equipment, once it's been run flat out in a force 4 to 5 for 80 miles in the ocean with no signs of damage then it's bulletproof!
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