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Author Topic: Breathers  (Read 3711 times)

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VicYouel

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Re: Breathers
« Reply #21 on: May 13, 2019, 09:04:10 AM »
Thanks much Tom!!
Vic

Tom Snow

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Re: Breathers
« Reply #20 on: May 06, 2019, 02:10:07 PM »
Good day All,

The spring and disc is now available from the new spares scheme an a very reasonable £5 I believe.

Regards,

Tom.

VicYouel

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Re: Breathers
« Reply #19 on: February 11, 2019, 04:28:21 PM »
Tom
Yesplease I would like to add this item to our shop..... let me know price etc.....
Cheerio for now
Vic

phutton

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Re: Breathers
« Reply #18 on: February 10, 2019, 01:16:42 PM »
I'll have one!

P.

Tom Snow

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Re: Breathers
« Reply #17 on: February 05, 2019, 11:26:02 AM »
Hello, Klaudius is right on the money, there should be a hair spring holding the disc in place so the gases from the crankcase can escape but not let air back in creating a partial vacuum in the crankcase and keeping the oil in. I have an original spring new and unused which I intend to have reproduced, if you would like some for the club Vic just let me know.

Regards,

Tom.

AndyB

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Re: Breathers
« Reply #16 on: February 03, 2019, 04:40:12 PM »
Thank you Claudius, I have re-assembled the breather with a disc kindly supplied by Kbryt, and a spring obtained via Ebay (from China!), and it seems to work OK so far. I haven't yet had the opportunity to run it for long enough to be certain, but I'll post an update in due course. My springs are slightly longer than the ones you show, but will hopefully do the trick...
Andy

klaudius

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Re: Breathers
« Reply #15 on: February 02, 2019, 05:08:40 PM »
Hello. Please indulgence with my bad English. I have already had the feathers that are being searched done. Original were made of 0.3 mm material. I have also made the addition of 0.4 mm. Funkcion tested for 3000 km on my 600 SV 1932.  If you need such a spring say which thickness is 0.3 or 0.4 mm. greeting
Claudius

kbryt

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Re: Breathers
« Reply #14 on: October 29, 2018, 10:12:53 AM »
PM me  I think I can find you one, and as my 'beam is on the bench I can double check it before hand.

AndyB

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Re: Breathers
« Reply #13 on: October 29, 2018, 10:08:10 AM »
Thanks kbryt - it looks like they are available from AJS & Matchless owners club - part number 000835 - however they only sell to members, which I am not.  :(

kbryt

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Re: Breathers
« Reply #12 on: October 28, 2018, 08:11:40 PM »
I think the breather discs from AMC singles do the job; no spring in those though

AndyB

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Re: Breathers
« Reply #11 on: October 28, 2018, 05:07:05 PM »
I lost the pipe from the breather on my '32 Lion 600, and it began to make loud whistling sounds, so I took off the mag drive / cam-chest so I could remove the breather and found just a tiny steel disc (1/4inch x 12thou) loose inside, no sign of a spring.
Should I use the measurements quoted by Peter Woodward to make a new disc, and does anyone know where I can source a suitable spring?
Edit - Photos added 29-10-18

Thanks
AndyB

[/quote]
Mine just has a flap - no spring! It seems to work ok...
[/quote]
Paul,

 I talked to Peter Woodward.... he believes that without the spring there is a danger the disc will block the outlet and therefore not function properly. He has measured a disc made from 7 thou shim as 0.535 inches diameter.

cheers

Paul,

Just chatted to Peter again.... actually the problem is not blocking but likely damage to the thin disc if you do not use a spring.

Vic

Vic
[/quote]
[/quote]
« Last Edit: October 29, 2018, 09:47:12 AM by AndyB »

VicYouel

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Re: Breathers
« Reply #10 on: August 11, 2015, 09:55:22 PM »
Mine just has a flap - no spring! It seems to work ok...
Paul,

 I talked to Peter Woodward.... he believes that without the spring there is a danger the disc will block the outlet and therefore not function properly. He has measured a disc made from 7 thou shim as 0.535 inches diameter.

cheers

Paul,

Just chatted to Peter again.... actually the problem is not blocking but likely damage to the thin disc if you do not use a spring.

Vic

Vic

VicYouel

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Re: Breathers
« Reply #9 on: August 10, 2015, 09:24:55 PM »
Mine just has a flap - no spring! It seems to work ok...
Paul,

 I talked to Peter Woodward.... he believes that without the spring there is a danger the disc will block the outlet and therefore not function properly. He has measured a disc made from 7 thou shim as 0.535 inches diameter.

cheers

Vic

wessex_man

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Re: Breathers
« Reply #8 on: August 10, 2015, 09:14:08 PM »
Yes I think it should be a diaphragm disc and spring. A pipe is attached to the breather and normally vented on to the chain.

iansoady

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Re: Breathers
« Reply #7 on: August 09, 2015, 11:03:42 AM »
I guess a disc and spring would fit. I'll make a try when I get round to that part.
Ian
1931 Model 10
1993 Honda CB400 Super Four