Grimeca hubs

N

nimrodneil

New member
Location
Portsmouth
hi to all, I am in the process of starting a new project and in need of some brake hubs, the front is a Grimeca 225mm (9 inch) tls left hand side. very similar if not the same as a 750 super sport early 70s,it has the 3 holes with mesh on the brake plate. the rear hub is an 8 inch Grimeca (I believe) and is the same as the one used on a Ducati 750 GT SS sport round case (2393br) not sure if this is the casting number, I do have a rear hub that I could use but would need both sides, ie brake plate and Cush drive with plate, or complete. I have pictures of what I need but have not worked out how to load them yet. thanks Neil
 

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Front is an S type Grimeca 230mm, not inches. Gt had another. Not the same as the Ducati I think particularly as the 750 SS had discs.
Rear is 200mm, not inches. Same as the big Ducatis I believe but not the same lever.

I have a spare front I think but of the GT type.

Paul
 
Paul Marx said:
Front is an S type Grimeca 230mm, not inches. Gt had another. Not the same as the Ducati I think particularly as the 750 SS had discs.
Rear is 200mm, not inches. Same as the big Ducatis I believe but not the same lever.

I have a spare front I think but of the GT type.

Paul
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Thanks Paul. have you any pics please of what you have and price you would want, thought they might be metric, had 3 people say about the Ducati gt ss using the rear brakes and seen pics. think it was 72 73 year models. definitely drum brakes on early model. every day is a school day for me on these old bikes.
 
nimrodneil said:
Thanks Paul. have you any pics please of what you have and price you would want, thought they might be metric, had 3 people say about the Ducati gt ss using the rear brakes and seen pics. think it was 72 73 year models. definitely drum brakes on early model. every day is a school day for me on these old bikes.
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Ok, will have a look tomorrow and get back to you.
750 GT, S and SS Ducati did have the 200mm rear. Only the GT prototype for publicity purposes had a front drum.

Paul
 
I've had a look, but I don't have a spare Grimeca hub.
If it's just a Grimeca 2LS you want, they are pretty common and were obtainable new only a few years back.

Paul
 
The rear pictured looks like the one used on the Ducati GT models, common to the 750 and 860. Shouldn't be too difficult to find complete w/cush drive etc.
 
thanks to you both, I will keep looking, e bay is obvious, do you know anywhere else to look. I need right place right time I guess. the rear brake plate is on American e bay, but postage and duties make it expensive, so was trying closer to home first
 
If you want exactly that Grimeca, it's going to be difficult. Only found on the 750 S as far as I know and they were only made for a year or so.

Paul
 
I sold my spare part 4LS-Grimeca some years ago to Australia. Depending of the quality you will have to pay between 750 - 1200 EUR for a complete double-front brake.

You can ask Thomas Studer studerconsulting@bluewin.ch , he has many good parts for sale.

Did you try these one?
https://www.ebay-kleinanzeigen.de/s-anzeige/doppel-duplex-bremse-borrani-hochschulterfelge-19-zoll/1622591915-223-1662
http://www.classic-motorrad.de/classifieds/racing-teile/racing-teile-in-lambach_i45851
http://www.classic-motorrad.de/classifieds/racing-teile/racing-teile-in_i46884

Good luck, Thomas aus LAU
 
Gotta say Grimeca Drums and Short Spokes are pretty on early Breganzies and Ducatis.

I believe Benelli used Grimeca drums strictly.

My 70 750SF came with BREV Drums and some Breganzies came with Fontana drums.

Nothing as SEXY like a Big Shoe Drum with Short Spokes with a Borrani rim and a Perilli tire.

4704799640_6c96963027_o.jpg


2618063983_0ca16e81ee_z.jpg

Blown up PIC poor Res. Don't rub me that Pirelli Phantom 120 Rayon Radial Super Comp was indeed the last of her kind ;o(

Downside is you require a 45 or 90 degree adapter to put air in your tires.

Trust I have my front axle "T" aligned perfectly - LOL

PS: If you elect to use a Grimeca Drum you have to use a Benelli Borrani Rim as the spoke angles are different Vs BREV and Fontana Drums.
Simplest way to look at it is that you have to mount the entire Benelli hub and wheel assembly onto a Breganzie which never used a Grimeca Hub or a Borrani rim to fit a Grimeca Hub - Only Benelli did it - Can't recall if Moto-Guzzi did it ?

Ducati went into Disc's early and can't say if they even used a Big Double Shoe Drum but did use Borrani Rims and if they had a Big Shoe Drum it was more then likely Fontana.

Interesting time when them early Italian 750 Twins could beat a Japanese 900 Kawasaki 4 or a 1100 LTD.
 
Last edited:
Laverda SF said:
Gotta say Grimeca Drums and Short Spokes are pretty on early Breganzies and Ducatis.

I believe Benelli used Grimeca drums strictly.

My 70 750SF came with BREV Drums and some Breganzies came with Fontana drums.

Nothing as beautiful like a Big Shoe Drum with Short Spokes with a Borrani rim and a Perilli tire.

4704799640_6c96963027_o.jpg


View attachment 55233

Blown up PIC poor Res. Don't rub me that Pirelli Phantom 120 Rayon Radial Super Comp was indeed the last of her kind ;o(

Downside is you require a 45 or 90 degree adapter to put air in your tires.

Trust I have my front axle "T" aligned perfectly - LOL

PS: If you elect to use a Grimeca Drum you have to use a Benelli Borrani Rim as the spoke angles are different Vs BREV and Fontana Drums.
Simplest way to look at it is that you have to mount the entire Benelli hub and wheel assembly onto a Breganzie which never used a Grimeca Hub or a Borrani rim to fit a Grimeca Hub - Only Benelli did it - Can't recall if Moto-Guzzi did it ?

Ducati went into Disc's early and can't say if they even used a Big Double Shoe Drum but did use Borrani Rims and if they had a Big Shoe Drum it was more then likely Fontana.

Interesting times when them early Italian 750 Twins could beat a Japanese 900 Kawasaki 4.
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Ron, no bike left Breganze with a Fontana as original fitment.
4LS Ceriani was offered as an option on early SFCs.

Paul
 
Thomas aus LAU said:
I sold my spare part 4LS-Grimeca some years ago to Australia. Depending of the quality you will have to pay between 750 - 1200 EUR for a complete double-front brake.

You can ask Thomas Studer studerconsulting@bluewin.ch , he has many good parts for sale.

Did you try these one?
https://www.ebay-kleinanzeigen.de/s-anzeige/doppel-duplex-bremse-borrani-hochschulterfelge-19-zoll/1622591915-223-1662
http://www.classic-motorrad.de/classifieds/racing-teile/racing-teile-in-lambach_i45851
http://www.classic-motorrad.de/classifieds/racing-teile/racing-teile-in_i46884

Good luck, Thomas aus LAU
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Depending on what you want, a very current 2LS Grimeca will do the job.

Paul
 
Paul Marx said:
Depending on what you want, a very current 2LS Grimeca will do the job.

Paul
Click to expand...
are they still making Grimeca, if I can get close to original but its finding all the different ones and the where abouts they are. some good info coming from here, I have tried contacting the above links.
 

nimrodneil said:
are they still making Grimeca, if I can get close to original but its finding all the different ones and the where abouts they are. some good info coming from here, I have tried contacting the above links.
Click to expand...
Andover Norton in the UK used to import and distribute Grimeca drums if I remember rightly. They no longer do so but maybe they have some leads.

Paul
 
nimrodneil said:
are they still making Grimeca, .......
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Here you will find informations about the actual GRIMECA-situation: Menze

I drove with a new 4LS from Germany to Turkey and back on a 750S. This brake can be very radical.
When you brake hard, the fork dives down and the two cables make a curve so the outer hose (?) gets a little bit longer.
So the brake-force is increasing and the brake is not so sensible to dose. Not so funny for the Person behind you (bouncing helmets).

On the race track or alone on the road it will be ok.

Thomas aus LAU
 
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