750 Drum brakes

The early "push/pull" brake plate can be changed for the later "Rod" type and vice-versa - cable needs changing too - I prefer the early type myself - regards - Phil
 
Thanks Phil. Well I am trying to source the later brakes for a SF1, I have a couple of the hubs with the original style so now I am on the hunt for the brakes. Have any in the back of your shop collecting dust?  :D :D :D

Clay
 
Clay,

The brake plates themselves and all associated hardware on them are identical front and rear.

piet
 
Thanks Piet. Well I'll need at least the brake assembly, the whole front wheel and brake would be better. I'll have to watch and see what comes up. The was one on ebay for $1300 US but that's a bit high. I can wait a while before it is needed, and if I have to use the old style for a while that will work too.

If anybody has one they would be willing to part with PM me.

Clay
 
If it's for making the bike original, go for it, but if you expect better functionality, stay with the first series drum brake setup. Series 2 overcomplicates adjustment and takes more hand force to have equal effect on braking to my experience (more resistance in the system and I think the leverage is slightly different. But I must admit that I do have limited experience on the 750's, maybe the ones I drove simply had adjustment issues.
 
I will shortly have a spare series 1 drum backplate but not the hub, if that helps.
 
Perfect Grant, let me know how much and we'll go from there. Maybe put it all together with the Marzzochi parts. I am going to need an extra set of the parts for them since right now I have the brake and brake shoes but none of the other pieces. The hunt goes on.

Thanks for the info Loather. I am trying to make it original, seems to help make them sell better. I have my '71 SF and never had much issue with adjusting, or using, them. We'll see with this one.
 
Let me sort it out at the weekend and then I'll PM you.
Let me know if you want anything else at the same time.
 
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Bike is an original 71/72 Breganze 750SF (Bought New here in Canada in 73 - Sudbury Ontario and one of 200 specifically shipped to Canada dissembled in crates to be assembled by prospective Dealers - To bad Honda eliminated the European Motorcycle Market here in Canada with the introduction of the $1100 Honda CB750 were the SF had a price tag of $3300 - I paid $1600 for a New SF over that crap ;o) but then who's to say "What a Thorough Bred is".  I added the 3/4 Dunstall Fairing/Slater 2 into 1 pipes and Homemade Rear Sets, Bates Tail Light and some sort of Flexible Enduro Japanese Turn Flashers. Rear Fender is bobbed and upgraded the valve train to hit 8000rpm, plus Carb Jetting, rewired the Electrics and still use the VW Bosch Points: but the Borrani Rims and BREV Brake setup is Original.

A little off topic here but this is my Cockpit:
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No Lucas Prince of Darkness Ignition Switch here but there is a Chronometer - Which reminds me to Go Home.

That bike and I have been through Hell and High Water for the last 45 years.

Like my Carrier - Handles a Fat Ass Fraulein with a pillow or 2x's 24 cases strapped in ;o)

As far as functionally goes, from my experience, the SF "Super Freno" leading shoe BREV Drum Brake is not as good a Disc's, in fair weather, when repeatedly hauling down from high speeds under race conditions as they tend to fade over being repetitively applied from speed but are definitely Superior in the rain and can say they wear with less maintenance then Discs. Put it this way, the SF BREV Drum Brake is very capable of throwing you over the bars. It's the same Brake and Rim used on the 750 SFC and early 3 Cly's. Other then Grimeca crap the SF Leading Shoe BREV Breganze Brake is the biggest Drum to be had on a Motorcycle and they're light.

Believe me, in emergency applications under every day use,  they are more then enough to be reliable and last forever if you keep them clean, blow them out occasionally and maintain your cables. Depending on environment, clean and grease the Pivot Cams every 5 years and the Axel Bearings while you're at it.

There's a little hands on experience when adjusting the SF BREV Drum Brake were you set the shoes to clearance against the drum when applying the Cable - Say .010 to .030" at the drum when you got it right without draging the other shoe - Are you that good  It's automatic to me after all these years .

Them are STD 18" Rims, could you imagine how short the spokes would be if they were 16" rims - LOL

I know a lot of our members hate my 3/4 Dunstal Fairing as it hides that beautiful SF Mill but I would not trade it for anything as it brakes the wind on long cruizes, keeps me dry in the rain and only weighs a pound.

If you want to see the Engine here it is:
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PS: Here are some Breganze Super Ferno BREV 750 SF Drum Brake PIC's:

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Warning! Don't over extent them Springs - Can you believe that the Center Stand ?, Side Kick and Rear Brake Light SX uses the same Spring.

I do believe Wolfgang has most if not all these parts.

Hope this Helps.



 
Tidy looking brakes there Ron, will help me as I am in the middle of stripping mine down on my 750.
 
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