My new projekt/bike 55 SQ 4 MK ll

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Paul_Linden
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Re: My new projekt/bike 55 SQ 4 MK ll

Postby Paul_Linden » Fri Feb 09, 2018 8:45 pm

Mine looks like this, although now it has a longer copper pipe as the oil was foaming and getting in to the pipe.
A914FF45-92C9-42B8-B05D-D8533D264848.jpeg
Ariel Square 4 mk2, Ariel Colt, Matchless G12, BSA C12. Room for one more......

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rschurr
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Re: My new projekt/bike 55 SQ 4 MK ll

Postby rschurr » Fri Feb 09, 2018 10:16 pm

Thanks Paul,
that explains a lot, a thread :idea: is already there, so just need a fitting and the pipe :idea:
Rudy
1923 James Model 12 500ccm v-twin -- 1960 Chevrolet Corvette C1
1926 Douglas EW 350ccm flat-twin -- 1967 Chevrolet Corvette C2
1936 Motosacoche 500ccm single --- 1979 Chevrolet Corvette C3
1948 BSA A7 500ccm parallel twin -- 1955 Ariel Square Four MKII :!:

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Re: My new projekt/bike 55 SQ 4 MK ll

Postby roger.fellows » Fri Feb 09, 2018 10:47 pm

Somewhere on the forum is Paul Jameson's version of the breather - enlarged aperture and repositioned end - I didn't bookmark it but should have.

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Re: My new projekt/bike 55 SQ 4 MK ll

Postby rschurr » Sat Feb 24, 2018 8:59 am

1923 James Model 12 500ccm v-twin -- 1960 Chevrolet Corvette C1
1926 Douglas EW 350ccm flat-twin -- 1967 Chevrolet Corvette C2
1936 Motosacoche 500ccm single --- 1979 Chevrolet Corvette C3
1948 BSA A7 500ccm parallel twin -- 1955 Ariel Square Four MKII :!:

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chris.shearwood
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Re: My new projekt/bike 55 SQ 4 MK ll

Postby chris.shearwood » Sat Feb 24, 2018 12:07 pm

rschurr wrote:Thanks, Roger
found it!?
viewtopic.php?f=4&t=222&p=14218&hilit=Mk+II+Breather+pipe#p14218
Cheers Rudy


Hi Rudy,
I don't think that is the thread that Roger was talking about. The one you have found is a breather mod for an iron motor Sq4.
Regards, Chris
1946 4G, 1950 NG and 1951 VH

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Re: My new projekt/bike 55 SQ 4 MK ll

Postby rschurr » Sat Feb 24, 2018 5:23 pm

Oops they all look the same to the Rookie :oops:
1923 James Model 12 500ccm v-twin -- 1960 Chevrolet Corvette C1
1926 Douglas EW 350ccm flat-twin -- 1967 Chevrolet Corvette C2
1936 Motosacoche 500ccm single --- 1979 Chevrolet Corvette C3
1948 BSA A7 500ccm parallel twin -- 1955 Ariel Square Four MKII :!:

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Re: My new projekt/bike 55 SQ 4 MK ll

Postby roger.fellows » Sun Feb 25, 2018 11:51 am

Hi Rudy, no that's not the one I meant. I'm not sure that there was a photo of Paul's modification. I'll do a bit more searching today, but we could do with Paul's input.

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Re: My new projekt/bike 55 SQ 4 MK ll

Postby roger.fellows » Sun Feb 25, 2018 12:42 pm

Hi again Rudy, sorry no good with quotes on here, but I've found the one I meant.

It's a Paul Linden topic 'Oil escaping from a rebuilt square' original post Tues 12 April 2016 and page 2. Useful inputs from several people including Paul Jameson.

If you check out the 'breathing' article in the knowledgebase on the club website there is mention of a breather box fitted to a Ducati (I think). I've acquired one, it has a sort of reed valve built in, various inlets probably because the Ducati has breather outlets from the rocker boxes. I like the idea of fitting a catch bottle, if only to see what would otherwise end up on the road - but I might be some time ...........

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Re: My new projekt/bike 55 SQ 4 MK ll

Postby rschurr » Sun Feb 25, 2018 3:07 pm

Hi Roger, yes now I found it, thanks again.

Since I installed the Morgo I see in cold weather

(and here in Bavaria is currently a siberian cold !)

a continuous stream of (foggy) air coming out from underneath the breather tube (but still no oil).

So had to wait for warm weather and a really warm engine to decide what to do.

Regards Rudy
1923 James Model 12 500ccm v-twin -- 1960 Chevrolet Corvette C1
1926 Douglas EW 350ccm flat-twin -- 1967 Chevrolet Corvette C2
1936 Motosacoche 500ccm single --- 1979 Chevrolet Corvette C3
1948 BSA A7 500ccm parallel twin -- 1955 Ariel Square Four MKII :!:

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Re: My new projekt/bike 55 SQ 4 MK ll

Postby Bob.Murphy » Sun Feb 25, 2018 5:31 pm

rschurr wrote:a continuous stream of (foggy) air coming out from underneath the breather tube (but still no oil) Rudy


I had the same copper pipe 'mod' in my square back in 1970 (but with the Marzak gear pump, Morgos hadn't been invented).

After a fairly hard run of 50 miles or more, while sitting at traffic lights, I always had a plume of vapour blowing out of the neoprene breather pipe attached to the copper pipe.

And that was in the summer :shock: .

It sounds normal to me.

We probably pushed our bikes harder back then - they were just bikes rather than investments. In 1971 I remember Graham Berry peering over my shoulder from the back while we were heading to the Ferry at Harwich saying "What speed are you doing??"

"85".

"Bloody Hell - you don't half thrash your square".

It stood up to it with regular maintenance and very frequent oil changes ;) .

Bob.
My avatar shows the late Len Rich in 1970 with the bike I now have - a 1958 Ariel VH


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