Norton Commando
Jerrydoe.com  Forum Home  Norton Commando Forum  Photos  [FAQ]  [Search]  [Memberlist]   
 [Profile]  [Check your private messages]  [Register]  [Log in] 
Anti drain valve? can I use it in the breather?

 
Post new topic   Reply to topic    Norton Commando Forum Index -> Norton Commando Motorcycles.
View previous topic :: View next topic  
Author Message
Chris



Joined: 21 Jan 2008
Posts: 102
Location: Eastbourne East Sussex UK

PostPosted: Fri Aug 29, 2008 5:12 am    Post subject: Anti drain valve? can I use it in the breather? Reply with quote

Anti drain valve? can I use it in the breather?

I was given a new anti drain valve by a friend who did not want to trust fitting it to his bike. I am still waiting on my Dorman brake valve from America so I was wondering as its a ball bearing & a spring will it work in the breather pipe to the oil tank? My breather appears to be pumping as much oil as the return pipe. I have now altered the tank cap & run the breather into the oil tank. I have also filled the tank with 3 pints!!
Hope to run it up at Lydden & see if it helps. hopefully stops its antisocial behaviour.
all the best chris
Back to top
kommando



Joined: 07 May 2005
Posts: 312
Location: Scotland

PostPosted: Fri Aug 29, 2008 5:51 am    Post subject: Reply with quote

The anti drain will be too strong and will retain too much pressure, the best valve in the breather is a reed valve which will open with very little pressure and keep up with the engine speed.
Back to top
cash



Joined: 10 Nov 2006
Posts: 416
Location: west cumbria

PostPosted: Fri Aug 29, 2008 8:11 am    Post subject: Reply with quote

If you take the spring out fit it upright it'll work fine providing the bore is big enough. I ran a Guzzi springless ball valve for years. However I've fitted a Yamaha 650 reed type valve early this year, I can't tell any real difference , perhaps the motor can and it looks better, nice alloy etc.

Cash
Back to top
Chris



Joined: 21 Jan 2008
Posts: 102
Location: Eastbourne East Sussex UK

PostPosted: Fri Aug 29, 2008 1:06 pm    Post subject: Thanks Reply with quote

Thanks for the advice.
I will wip the spring out & try that for now.
Hopefully I can sort something out before Snetterton next weekend.
all the best Chris
Back to top
Display posts from previous:   
Post new topic   Reply to topic    Norton Commando Forum Index -> Norton Commando Motorcycles. All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

The Unapproachable Norton Commando

At the end of 1967 the Norton Commando was announced.

The Norton Commando was greeted with a certain amount of scepticism because on first sight the commando appeared to comprise of the old Norton Dominator twin cylinder engine mounted at an inclined angle in a set of new cylinder parts.

It was not realized that the new Norton Commando Isolastic method of engine suspension damped out all engine vibration and produced a machine which had uncanny smoothness for a vertical twin. In due course the critics were silenced and the Norton Commando had the distinction of being regarded as the first of todays so called superbikes. There can be little doubt that the original design concept of the Norton Commando has proved correct, since comparatively few modifications of any real consequence have been made since production commenced during 1968.

Now nearly 40 years later Norton Commando riders like us are a breed of our own, and as far as we are concerned its still more fun to go for a blat on the old Norton Commando, and fast. As a Norton Commando owner and enthusiast, my goal here is to promote and give credit to those who keep the Norton name going.

It is more deserving to give credit to the Commando itself, for after all these years it continues to be respected. The original Commando designers like John Favill are those who deserve the credit for developing this incredible motorcycle.

The Norton Commando Roadster and Interstate of the late seventies, never died. Although the Norton Villiers factory dispersed the tradition lived on. Today Kenny Dreer in the USA is developing the new 952 CC Norton. What a great looking bike this is, and its engineering is still based on the original layout. It will be interesting to see how the new 952CC Norton does in todays tough motorcycle market. One thing is for sure, I would own one if I could afford it.