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Author Topic: air/oil separation  (Read 4647 times)

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Offline Captain

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Re: air/oil separation
« Reply #25 on: February 18, 2016, 11:12:57 pm »
A couple of pictures of the catch tank.

 Captain

Offline MessnerMoto

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Re: air/oil separation
« Reply #26 on: February 19, 2016, 01:20:06 am »
I need to ask. What is the function of a catch tank? Thx

Offline Captain

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Re: air/oil separation
« Reply #27 on: February 19, 2016, 02:52:08 am »
I need to ask. What is the function of a catch tank? Thx

 Two reasons..............

 (1) A catch tank is mandated in the rules and regulations we run under.
 (2) As we are required to have one then I designed it to be the most effective possible. The canister is large in volume so "IF" any oil made its way to the catch tank the air movement would be so slow that any oil will drop to the bottom and drain back to the main tank. The reality in a healthy engine is that nothing really ever gets back there. Certainly in our case it doesn't.
 Something else that is different about it is that it is made from plumbers PVC tube and glued together. Cost is almost nothing, is super light weight, oil resistant, tough and robust, hard to break or crack, can be made in 30 mins from scratch including painting it silver to disguise it's origin.

 Captain


Offline MessnerMoto

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Re: air/oil separation
« Reply #28 on: February 19, 2016, 04:54:05 am »
So I can delete catch tank, lines connected with catch tank.. and leave everything else intact ?

Offline turboguzzi

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Re: air/oil separation
« Reply #29 on: February 19, 2016, 05:04:23 am »
tnxs captain, sure clearer now. again, lovely work.

Offline 01Thomas

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Re: air/oil separation
« Reply #30 on: February 19, 2016, 02:29:41 pm »
Correctomundo! Foam doesn't lubricate and neither do air bubbles entrained  in the lubricant. Plus the air promotes oxidation of the oil and in extreme cases causes cavitation.

SNIP
 Note !! Oil/air separation is the most important thing you can do as if "any" air remains captive and is carried back into the engine crankshaft bearings it will have a damaging effect or at the very least shorten the bearing life and durability.

 Captain
1971 Honda CB750 Four K1 [Engine: CB750E-1113521 / Frame: CB750-1113838]
1977 Seeley Honda CB750F (F1) [Engine: CB750E-2551214 / Frame No: SH7-655F]

'96 Yamaha YZF750SP & '81 Moto Guzzi SP1000 & '80 Moto Guzzi 850 LeMans II & '82 Bimota KB-3 [Frame No 49] & '66 Ducati 50 SL/1 & '53 Miele K-50 & '38 Miele 98

 

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