Ben's 900 Monster build

[900Rebuilder]

Cleaned the brake callipers up as best as I could but cant get them any better than shown despite multiple efforts with various cleaners. I'll have to settle for the dirty look and pretend they are magnesium



Also need to find a source for the pad pins as there seems to be a number used across the years by Brembo / Ducati etc. I've found some SS ones on ebay but they dont come with the little barrel shaped spring holder and also have an extra part on the end with an R clip which mine dont

[RichardDDuke]

Am in a similar situation, and looking for Brembo parts for 900ss brakes front and back.
So please post details if you find anything....
TIA

[Sirc]

Originally Posted by 900Rebuilder

Cleaned the brake callipers up as best as I could but cant get them any better than shown despite multiple efforts with various cleaners. I'll have to settle for the dirty look and pretend they are magnesium



Also need to find a source for the pad pins as there seems to be a number used across the years by Brembo / Ducati etc. I've found some SS ones on ebay but they dont come with the little barrel shaped spring holder and also have an extra part on the end with an R clip which mine dont

Unless your calipers are somehow different to the many i've owned and lightly refurbished, i think the "grubby" grime appearance can be removed with a diluted solvent. You can safely use GT85 for this, as the propellant that evaporates in seconds is perfect for this, although it's an expensive way to do it. This and a clean toothbrush or nailbrush and some clean cotton cloth, the latter used quickly after after each spray, works wonders.
I can see some more ingrained discolouration that probably won't be improved, but this looks to be a minority.

[900Rebuilder]

Thanks Sirc - I'll give it a go

[pooh]

Are they stainless bolts in the callipers? Don’t think it’s a good idea I only use titanium on brakes due to the heat cycling issue.

Pooh

[900Rebuilder]

Can you please explain? I dont have SS on the mounts but thought / assumed these would be ok...

[Mr Gazza]

Originally Posted by 900Rebuilder

Can you please explain? I don't have SS on the mounts but thought / assumed these would be ok...

What you have is a standard early Monster yoke with 25mm offset.
The offset is the distance between a line drawn through the centres of the fork leg holes and the centre of the stem hole.
In other words the fork legs will be 25mm in front of the steering stem (centres).

The later SS has 30mm offset so can't be used with early Monster bottom yokes and indeed shouldn't even be used as a pair as the different offset will upset the geometry.

Later Monsters were changed to 30mm offset with the introduction of the "ST" frame, whereupon they became interchangeable with SS yokes.

I think I'm right in saying the early SS had 30mm offset too?

No problem with stainless caliper halves bolts, but the kits usually have standard cap heads instead of the original low heads. Only trouble with stainless low heads is the increased likelihood of chewing the Allen socket out getting it up to the required torque.
I had this problem with button head stainless disc bolts which had insufficient socket depth and would not take the correct torque. Best cure is to use steel or Titanium bolts.

I always use Ti these days anyway, especially on un-sprung parts.

RSR Moto are purveyors of fine Titanium bolts and also carbon fibre parts.
They will be advertising on here in 2024.

[Bitza]

I use ss yolks on my (94 framed) heap but also have clip ons and rearsets. I think Ducati went for the 25mm off set due to the upright sitting position on a Monster, as 851s (with the same frame) used 30mm offset.
Re stainless fixing, beware some are rubbish and rounding out socket heads can be an issue, also had bad experiences when used in Ali components suffering I think from electrolytic corrosion. Ti bolts (grade 5) are the job, but be warned Ti is addictive.

[Mark64]

Originally Posted by Mr Gazza

RSR Moto are purveyors of fine Titanium bolts and also carbon fibre parts.
They will be advertising on here in 2024.

Great news about RSR Moto, I can vouch for the quality of their products and my (ex) bike is on their 'hall of fame' ;-)

[900Rebuilder]

Originally Posted by Mark64

Great news about RSR Moto, I can vouch for the quality of their products and my (ex) bike is on their 'hall of fame' ;-)

I've just taken stock of some of their titanium front disc bolts which are great quality but I couldn't find any listed for the rear disc of the M900. They also didn't come with any washers so I'll have to check to see if they are required or not.

[Dukedesmo]

Originally Posted by Mr Gazza

RSR Moto are purveyors of fine Titanium bolts and also carbon fibre parts.
They will be advertising on here in 2024.

Club discount...?