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BRAKE CONVERSION

 
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MAX600
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PostPosted: Thu Mar 25, 2004 3:21 pm    Post subject: BRAKE CONVERSION Reply with quote

How difficult, if possible, is it to convert a pre disk brake Commando to a more modern disk and caliper? Does anyone have any experience converting a drum brake model to something like and AP or Brembo front disk setup? Preferably a twin disk setup. After all, the bike is not exactly a feather weight. Question
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Guzzibill
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PostPosted: Thu Mar 25, 2004 7:54 pm    Post subject: brake conversion Reply with quote

you need a twin disc like you need another hole in the head.... one 10 inch disc with a 13mm brembo master and a lockheed or grimica caliper
( plus adapter)and it will almost do stoppies. you will need a newer fork slider and a newer front hub and axle..... other than that its a piece of cake. I have a Norvil disc,lockheed racing caliper and brembo set up on my 70 commando.. its just bolt on replacement...
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guzzibill
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PostPosted: Thu Mar 25, 2004 8:32 pm    Post subject: brake conversion Reply with quote

I have some other info for you, if you do this, use a commando front hub and axel from a disc braked commando. while you are at it lace it to an alloy rim with stainless spokes and nippeles. you can use a stock disc, or a larger after market one (see Norvil or Brit spares new zeeland) you can use a stock right Norton slider with an adapter to suit either the stock disc or the larger one, again both Norvil and Brit spares sell the proper adapters. OR use a Norvil slider that is cast for the Lockheed racing caliper. whatever you do toss the stock Lockheed caliper in your junk pile, or polish it and use it for a paper weight. ( it LOOKS cool) you can use a Lockheed racing caliper, or a grimica caliper from the same sources. I cant recomend "vintage brake" highly enough for the master (13mm Brembo with micro switch for brake light) cylinder.
have a stainless line made up to your specs, a hot rod shop should be able to help. now that you have real brakes, you will notice that the forks are rather spindily, get a Hyde fork brace to fix that.
http://www.vintagebrake.com/
www.norvilmotorcycle.co.uk/
http://www.brit-spares.com/shopping/stdparts/stdparts.htm
http://www.unityequipe.com/
these sites should keep you busy
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max600
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PostPosted: Fri Mar 26, 2004 6:18 am    Post subject: Break help Reply with quote

Thanks for the help. That will definitely be step one in the restoration plan. I have a riding history from the early '90s to now on modern sport bikes. I just recently rode a friends commando 750. I was hooked after the first kick. I went straight out and bought a '71 commando to do a restore/rebuild. The brakes were a bit of a shocker on the test run but I figured I was doing a rebuild anyway. I use the word 'brakes' here only because I assume that they had every intention of stopping the bike. It was quite a difference from what I am used to. To be fair, I will give the system a once over before I replace it.
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Jagger
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PostPosted: Mon Apr 26, 2004 5:31 am    Post subject: Reply with quote

If you want a front brake that squeals the tyre at 90+ with two finger operation,then i can reccommend the close grained,cast iron,12" floating disc conversion offered by RGM in Cumbria,UK.
I,ve been running this brake for a number of years and now wear out my front tyres quicker than the back ones.I use a Grimeca master cylinder and caliper and braided hose.

picture @
http://www.grahamreddy.co.uk/bikepics/12060004.JPG

RGM motors are at www.rgmmotors.co.uk


i honestly think this brake cannot be beaten on a Norton.

Graham Reddy (850 for 26 years)


http://www.grahamreddy.co.uk/bikepics/left.JPG
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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.