Author Topic: Rocker Oil feed pipe sheared - Update...  (Read 1982 times)

Offline mick43

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Rocker Oil feed pipe sheared - Update...
« on: 08.09. 2012 09:39 »
Hi Gents... (and any Ladies..)

Just looking for some reassurance and recommended supplier....

I recently purchased [a very nice in my opinion] 1958 Super Rocket - which had had a complete engine rebuild.

Unfortunately when I got home from last outing there was some oil on engine - which was unusual as she has been oil tight  for approx first 400 miles... on close inspection I found rocker oil feed pipe had sheared just above T connection to each side of engine  *sad2* but there wasn't that much oil over engine, as the pipes were still making contact & in-line - at least when stationary.

I've taken tappet covers off and there is a dampness in there (of oil) - and engine was sounding ok so I'm hoping the pipe broke close to home and no damage has been done.

So questions please....

1. Is there a lot of oil pumped to rockers ? If so then it appears that not much was lost and/or it happened close to home - as there wasn't much spilt/lost on bike.

2. any recommended supplier - I've searched the net and found Supreme Motorcycles and Burton Bike Bits - both closed today - so I'll ring them on Monday for a new part.

many thanks in advance....

1958 Super Rocket
North East Essex - Uk

Offline stu.andrews

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Re: Rocker Oil feed pipe sheared
« Reply #1 on: 08.09. 2012 09:45 »
Try Draganfly (see website), they seem to have nearly everything & are very helpful.
Very little oil is usually up in the rocker boxes as the supply is from the return side of the pump.

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2012 Triumph Bonneville SE-Fun


Offline duTch

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Re: Rocker Oil feed pipe sheared
« Reply #2 on: 08.09. 2012 09:53 »
Quote
feed pipe had sheared just above T connection to each side of engine

G'day Mick,I think I know what you mean??
 Can't you just cut and re-solder the pipe together, and if necessary add a (longer)rubber joiner??

 Cheers duTch

 Ps Where are yea??
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
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Online trevinoz

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Re: Rocker Oil feed pipe sheared
« Reply #3 on: 08.09. 2012 21:55 »
Don't use soft solder on this pipe, always silver solder.

Trev.

Offline mick43

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Re: Rocker Oil feed pipe sheared
« Reply #4 on: 09.09. 2012 07:38 »
thanks Gents...

Unfortunately the break is very close to the T section.... so I could maybe make a new connection there and extend pipe... (noting Silver solder required).  I will talk to the dealers on Monday.

PS. I'm in UK - North East Essex..  I'll update my profile.
1958 Super Rocket
North East Essex - Uk

Offline t20racerman

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Re: Rocker Oil feed pipe sheared
« Reply #5 on: 09.09. 2012 17:46 »
PS. I'm in UK - North East Essex..  I'll update my profile.

Hey, that's near me! I'm in East Herts, near Bishop's Stortford. You anywhere near that?
1961 A10 - somewhat modified :-)
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1967 T20 Suzuki - heavily modified Classic Racer
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Offline mick43

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Re: Rocker Oil feed pipe sheared
« Reply #6 on: 09.09. 2012 19:30 »
Hi 'racerman'

I'm at Kirby Cross/Frinton on Sea.

 *wave*
1958 Super Rocket
North East Essex - Uk

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Re: Rocker Oil feed pipe sheared
« Reply #7 on: 09.09. 2012 22:12 »
Mick,
             Drill out the broken piece of tube and fit either the dressed end of the existing tube or replace it with new copper.

Trev.

Offline mick43

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Re: Rocker Oil feed pipe sheared
« Reply #8 on: 10.09. 2012 10:28 »
Ok - I will have a go at this.... the original pipe appears to be 'brazed' as all brass in appearance at joints - but I'll assume similar melting point to silver solder so I can tackle with a small blow torch  *smiley4*

thanks...
1958 Super Rocket
North East Essex - Uk

Offline mick43

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update... I obtained new piece of copper pipe, and formed to shape. Then took to local garage to silver solder each end (oil union pieces at rockers and sump), as I couldn't get enough heat with my small blow lamp.

The chap there had a very good idea, and I wonder if this is why my pipe failed in first instance? ie. form a small loop of copper pipe so this helps eliminate vibration/movement between oil tank and engine.

So, should a loop like this have been in place in first instance ? I do have an old manual and the diagram doesn't show this - but it's a very good idea for me.... as the engine and oil tank/frame are moving/vibrating at different rate ?

cheers all for continued advice....

1958 Super Rocket
North East Essex - Uk

Online bsa-bill

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Re: Rocker Oil feed pipe sheared - Update...
« Reply #10 on: 17.09. 2012 16:06 »
The rubber sleeve should cancel any vibes, but the loop is a good call
All the best - Bill
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Re: Rocker Oil feed pipe sheared - Update...
« Reply #11 on: 17.09. 2012 21:22 »
The early pipe was a one piece to the oil tank but was modified to the two piece set up with the rubber section.
Probably because of ongoing fractures.

Trev.

Offline duTch

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Re: Rocker Oil feed pipe sheared - Update...
« Reply #12 on: 18.09. 2012 10:07 »
yeah , but try buying the bits separately, did it but complex!

 Trev, Silver solder Question, What silver % is best option, drilled the guy at hardware for info, but I had some 5% so used that, bit of a mission tho'.
I bought a bottom banjo from Draganfly, and had to solder in my pipe(what was left of it)
 cheers duTch
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
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Offline mick43

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Re: Rocker Oil feed pipe sheared - Update...
« Reply #13 on: 18.09. 2012 19:33 »
Yes the one that fractured pipe was a single piece of copper. It had a rubber sleeve around it when it run along frame.

I spoke to draganfly today (very helpful). He suggested I simply use two pieces of copper and join with a rubber pipe section... which is what I'll do (and maybe I'll form a coil as well if I can bend to the diameter I want).

All straight forward stuff when you know !  so many thanks for input and guidance.

1958 Super Rocket
North East Essex - Uk

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Re: Rocker Oil feed pipe sheared - Update...
« Reply #14 on: 18.09. 2012 22:11 »
Dutch,
            Not sure of the % of my supply of silver solder. It was "donated" to me some years ago by a mate.
It is the silvery coloured type, not the brassy type.

Mick,
              It's probably not necessary to put a loop in the feed pipe.
The rubber section in the vertical section should do the trick nicely.

Trev.