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Author Topic: robbe coupling  (Read 317 times)

Klunk

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robbe coupling
« on: October 15, 2019, 12:20:37 AM »

new member has a Robbe Najade. the coupling rubber has perished.
any ideas where to buy the rubber?
looks like this
https://www.cornwallmodelboats.co.uk/cgi-bin/ss000001.pl?page=search&SS=r1446&PR=-1&TB=O&ACTION=Go%21
seems stupid to buy a whole new coupling!
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derekwarner

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Re: robbe coupling
« Reply #1 on: October 15, 2019, 12:53:29 AM »

Sometimes marketing takes us all for granted.........are we stupid? or is it the world of Commerce?


The flexible element is obviously made from a byproduct of black gold......


If the owner had the time to spend, a close fitting tube over the two coupling halves, mix and inject a thermo-setting  plastic into the tube & a new element is produced following the exact profile of the lobes in each coupling 1/2......[exhausting of entrapped air would be required]


All versers the cost of a complete new coupling assembly?


Derek
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Derek Warner

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Capt Podge

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Re: robbe coupling
« Reply #2 on: October 15, 2019, 12:56:11 AM »

I'm just wondering whether or not heat-shrink might do the job? - or perhaps a piece of reinforced
 garden hosepipe? This would probably need steeping in very hot water to soften it sufficiently to press fit.


Regards,
Ray.
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Netleyned

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Re: robbe coupling
« Reply #3 on: October 15, 2019, 07:47:54 AM »

Try Mobile Marine. They do heavy duty couplings.
Ned
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derekwarner

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Re: robbe coupling
« Reply #4 on: October 15, 2019, 08:30:43 AM »

Perished rubber in batch lots?........in 1972, I purchased a new Renault 12 motor vehicle...after 8 years the front shock absorbers became noisy & tended to bottom out....thump...bang, thump >>:-(


Thinking I'll fix this .....I purchased a new genuine Renault replacement set of shockers ....installed them & after 6 months, the condition returned thump...bang, thump

Checked the date of manufacture....   you guessed it 1970.......same as the pair I removed. <*<

Discussed the situation with the distributor who suggested I had incorrectly installed them... :-X


............Perished rubber in batch lots!
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Colin Bishop

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Re: robbe coupling
« Reply #5 on: October 15, 2019, 08:45:30 AM »

A slice off a car fuel or heater pipe might do the trick if you can find the right bore. But if you have to buy the pipe thn you might as well get a new coupling designed for the job.

SHG models do some good ones.

Colin
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ray123

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Re: robbe coupling
« Reply #6 on: October 15, 2019, 09:07:27 AM »

new member has a Robbe Najade. the coupling rubber has perished.
any ideas where to buy the rubber?
looks like this
https://www.cornwallmodelboats.co.uk/cgi-bin/ss000001.pl?page=search&SS=r1446&PR=-1&TB=O&ACTION=Go%21
seems stupid to buy a whole new coupling!
hi klunk  i use them style couplings   and   have found bauer modell in germany  do this kind of coupling and also the rubber middle https://www.bauer-modelle.com/epages/Bauer_Uwe46269592.sf/en_GB/?ViewAction=View&ObjectID=59207528&PageSize=36&Page=2   scroll down to the bottom of the page 
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Subculture

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Re: robbe coupling
« Reply #7 on: October 15, 2019, 02:25:53 PM »

Silicone hose works well, doesn’t perish and is very cheaply available on eBay in pretty much any diameter you wish.

coch y bonddu

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Re: robbe coupling
« Reply #8 on: October 15, 2019, 06:05:56 PM »

Best one to use is Orange Calor Gas pipe cheap as chips and strong as well  O0 O0 O0 O0 O0




Dave
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