Front brakes, drum v.s. stock disk

This Forum is for Norton Commando Motorcycle related topics.

Front brakes, drum v.s. stock disk

Postby twinfan » Sat Jul 17, 2010 11:05 am

Just curious, I have heard the stock front disk give less than desirable performance, I have not heard alot about the earlier front drum's performance?? Image
Former USCG machinery tech.
Former Dodge silver certified.
Former Honda expert tech.
Toyota Master diagnostic tech.
ASE certified Master tech.
twinfan
 
Posts: 5
Joined: Fri Jul 16, 2010 2:56 am
Location: Westfield Ma

Re: Front brakes, drum v.s. stock disk

Postby swooshdave » Sat Jul 17, 2010 11:07 am

twinfan wrote:Just curious, I have heard the stock front disk give less than desirable performance, I have not heard alot about the earlier front drum's performance??


Disc can be made a lot better. Way better than the drum.
You probably want to go into town, and find a up to date Jap Bike store,
With a full spares department, a clean workshop, and kean young mechanics.
And ask them if theres a Grumpy Old Bloke out in the Hills, who knows how to fix Real Motorcycles.

Matt
User avatar
swooshdave
 
Posts: 6041
Joined: Wed Apr 15, 2009 10:53 pm
Location: Portland, Oregon

Re: Front brakes, drum v.s. stock disk

Postby MexicoMike » Sat Jul 17, 2010 11:11 am

" I have not heard alot about the earlier front drum's performance??"

That's because the word "front drum" and "performance" cannot properly be used in the same sentence! :)

Sorry, couldn't resist...

There was a test published here a few days ago of some superbikes back in the day - you should be able to find it easily. The Norton's front drum (other bikes had discs) was clearly not up to the task and hurt it rather badly in every category where a brake was useful (everything except the 1/4 mile).
User avatar
MexicoMike
 
Posts: 723
Joined: Sun Jan 31, 2010 6:34 am
Location: Mexico City or Chester MD - Norton is in Mexico

Re: Front brakes, drum v.s. stock disk

Postby hobot » Sat Jul 17, 2010 12:30 pm

In best conditioned drum or disc brake there's a world of difference
in how much fear grip straight is required to get tire maxed out
and do it more than few times in a row.

Simplest most bang for the bux is open the tinny tiny pin hole
restriction in the big rubber cap-valve deep in master cylinder.
Then SS hose so less lever effort just expanding the rubber kind.
Then change lever pivot or try a race lever if you got normal
man size hands to open grip a bit.

After this, price and efforts go way up of incremental improvements
in various upgrades to whole new system.

hobot
Throw yourself at the ground and miss!
User avatar
hobot
 
Posts: 6517
Joined: Wed Oct 19, 2005 6:59 pm
Location: Arkansas, Dixieland

Re: Front brakes, drum v.s. stock disk

Postby gjr » Sun Jul 18, 2010 3:40 am

The Norton TLS brake works fine for normal road use. Make sure that it is set up correctly and considder higher friction shoes (RGM ).

Greg
User avatar
gjr
 
Posts: 199
Joined: Fri Mar 05, 2010 4:47 pm
Location: Delano. Minnesota

Re: Front brakes, drum v.s. stock disk

Postby Reggie » Sun Jul 18, 2010 4:00 am

I had a twin leading shoe front brake on my first Commando, which was not good!

I fitted a back plate (known as a stiffening kit on Norvils site) and had special "green ferodo" (I think) shoes machined to my drum size, which was only a slight improvement with the performance being mediocre when warmed up or hot. Also, on a morning, the first touch of the brakes nearly locked up the front wheel momentarily! I then fitted a Norvil racing disc with an AP caliper with a standard master cylinder which was definitely a better more consistent brake.

I'm talking about 25 years ago and my engineering/mechanical skills were very poor then, not that they are that good even now, but maybe it is possible to get a drum brake to be good, but I couldn't achieve it then. Having said that I have never had a totally standard Norton front disc brake set up on my Norton to compare. All my disc braked Nortons have had modifications made to them.
User avatar
Reggie
 
Posts: 549
Joined: Mon Jul 24, 2006 2:30 pm
Location: Yorkshire England

Re: Front brakes, drum v.s. stock disk

Postby mikegray660 » Sun Jul 18, 2010 4:10 am

vintage brake redid a stock drum on a friends commando (http://www.vintagebrake.com/) and it was a really sweet setup, though rather pricey, but more than adequate for street. It is comparable to my disc setup. I have an aftermarket grimica master cylinder and stock sized stainless disc - but the drum looks way cooler!
73 850 Commando
75 750gt Ducati
78 Laverda 1200
96 900SS duck
61 BSA A10
62 Triumph T110
User avatar
mikegray660
 
Posts: 669
Joined: Sun Nov 05, 2006 8:22 am
Location: Los Angeles, Ca

Re: Front brakes, drum v.s. stock disk

Postby montelatici » Sun Jul 18, 2010 6:25 pm

The stock front drum on a Commado was a really weak brake. But, if you only ride the bike occasionally, I would prefer a drum as it requires very little maintenance.
User avatar
montelatici
 
Posts: 188
Joined: Wed Aug 26, 2009 6:27 pm
Location: Upper Marlboro, Maryland


Return to Norton Commando Motorcycles.

Who is online

Users browsing this forum: madass140 and 3 guests