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General Category => General Discussion => Topic started by: lazlokovacs on May 02, 2018, 12:26:25 PM

Title: any lighter rotors out there for Lemans IV?
Post by: lazlokovacs on May 02, 2018, 12:26:25 PM

I'm tired of my instant-rusting boat anchor rotors that squeak like mad everytime I get to traffic lights

Anyone know of any upgrades?

found these at hmb

http://hmb-guzzi.de/Brake-Disc-front-rear-270-mm-outer-ring-LM-1000-Cali-3-SP-3-etc-stainless

but apparently they weigh about the same as stock

any ideas?

Or are there any 16" japanese front wheels out there that could be swapped in fairly easily?

Would love to lose some unsprung weight esp up front

Title: Re: any lighter rotors out there for Lemans IV?
Post by: Turin on May 02, 2018, 01:59:35 PM

If you're trying to lose in spring weight, there is a dymag wheel on eBay.
That 16 inch hoop weighs a ton.

I prefer iron rotors over stainless.

Title: Re: any lighter rotors out there for Lemans IV?
Post by: Groover on May 02, 2018, 02:06:59 PM

Is this the one for the Le Mans 1000?

https://www.ebay.com/itm/NOS-DYMAG-Front-Wheel-Moto-Guzzi-Lemans-17-Inch-In-Factory-Box-D713/372286053584?hash=item56adfa5cd0:g:pA4AAOSwFWda089X&vxp=mtr

Title: Re: any lighter rotors out there for Lemans IV?
Post by: twhitaker on May 02, 2018, 04:06:06 PM

Vll LeMans

Title: Re: any lighter rotors out there for Lemans IV?
Post by: flangeman_70 on May 02, 2018, 07:21:47 PM

I have those you referenced on my SPIII.
They weigh a ton, each, rust, the surfaces are heavily pitted and just found this week 2 huge radial cracks in one disc.
They squeal horribly with standard pads. The surface just glazed up. I am using a. Sintered pad which greatly improved stopping, stopped squealing and not obvious differences in wear rates.
The discs are 5 years old and have done 50000km with winter riding also.

Adam
 

Title: Re: any lighter rotors out there for Lemans IV?
Post by: Turin on May 02, 2018, 09:00:57 PM

V11 lemans has 6 bolts for caliper mounting.

this dymag has 5.

 (https://img.auctiva.com/imgdata/1/0/7/1/3/9/5/webimg/989578969_tp.jpg)

Title: Re: any lighter rotors out there for Lemans IV?
Post by: lazlokovacs on May 03, 2018, 02:28:11 AM

Quote from: flangeman_70 on May 02, 2018, 07:21:47 PM

I have those you referenced on my SPIII.
They weigh a ton, each, rust, the surfaces are heavily pitted and just found this week 2 huge radial cracks in one disc.
They squeal horribly with standard pads. The surface just glazed up. I am using a. Sintered pad which greatly improved stopping, stopped squealing and not obvious differences in wear rates.
The discs are 5 years old and have done 50000km with winter riding also.

Adam

you mean the OM ones or the replacement HMB discs?

Title: Re: any lighter rotors out there for Lemans IV?
Post by: flangeman_70 on May 03, 2018, 09:45:39 AM

Quote from: lazlokovacs on May 03, 2018, 02:28:11 AM

you mean the OM ones or the replacement HMB discs?

Replacement items.
300mm up front and 270mm rear

Title: Re: any lighter rotors out there for Lemans IV?
Post by: lazlokovacs on May 03, 2018, 04:01:18 PM

thanks for the info, I might give those a miss then! :shocked:

Title: Re: any lighter rotors out there for Lemans IV?
Post by: Turin on May 03, 2018, 08:14:08 PM

If you go with a bigger rotor, you'll need adapters as well. see old add:
http://www.dropbears.com/s/sda/p62.htm (http://www.dropbears.com/s/sda/p62.htm)