RM Leading/Trailing Front Brake Identification

[BAHNZY]

Can anyone help with identifying this brake assembly?
When purchased it was for a 84 RM125. It certainly fits the 84 125 front hub and has been modified to fit up to the WP4054 forks, but when I come to order a new set of shoes nothing comes close. The main issue centers around the rotation point of the shoe. On the pieces in the pic’s below you can see a radius on the shoe where it locates into the backing plate whereas the ones that are ordered for a 83/84-RM250/500 and 84-RM125 have a the reverse of this where the shoe locates onto a pin rather than into a boss.

The only markings on the shoes are AKB-120G0 and aside from MAGNESIUM, there are no other identifying marks on the backing plate.

Bahnsy

[Mick D]

Hi Banshy, I am thinking I may have an answer for you?
It would be nice to know the drum diameter and the width of the shoe but first.
Cheers, Mick.

[LWC82PE]

It looks nothing like my RM TLS brake plates so i would say it isnt. What you have there is a Honda CR/XR/XL TLS brake plate

[BAHNZY]

At work so don't have access to the drum, will check that tonight. The shoes are 25mm wide.

[asasin]

I got my ones relined and then fitted to the hub , they work as good as Discs but not when wet!!

[suzuki27]

Not RM for mine. I will go with Honda too.

[EVO450]

Could be the same as this unit from an XR/XL500 '80 & 81 mod. fits 130mm drum
Evo

[holeshot buddy]

looks like honda 2 me

[Mick D]

At work so don't have access to the drum, will check that tonight. The shoes are 25mm wide.

Bit of a guessing competion without the relevant drum dimension.
I am thinking maybe 78, 79 K3/k4 Honda XL250  they look the same type of shoe and they are the only 25mm wide ones that I have seen in that style, but they run a 160mm drum 80/81 XL/XR 500 ones are all 30mm wide, I think.
 

[LWC82PE]

This is what it is

130 x 25

Honda CR480 81/82, CR250 81-82, XR 250 81-83,  XR500 81-82

Problem solved.

[Mick D]

This is what it is

130 x 25

Honda CR480 81/82, CR250 81-82, XR 250 81-83,  XR500 81-82

Problem solved.

With respect Leigh, All Honda CR480 81/82, CR250 81-82, XR 250 81-83,  XR500 81-82 FRONT TLShoes are 30mm wide.  Bahnsy has stated his are 25mm wide? I do agree the backing plate looks like honda. Maybee bahnsys shoes are 30mm not 25mm as stated. But I am starting to feel like without all the correct relevant requiered info in the first place, that this topic is a poisoned bait.

BWT FORK It’s only a "friendly" guessing competition "at this stage", and we are still waiting for  Bahnsy to state the drum size, aren't we??

Maybe the puzzle won’t be solved until Bahnsy puts up the drum diameter.
But at the end of the day, Who gives a Flying Fork. Anyone?

Cheers, Mick. 

[BAHNZY]

In retrospect, measuring the drum diameter is pointless as the drum that I have is the RM unit and obviously not the correct hub for what I was told was an RM125 backing plate.

As it appears, the brake unit is a Honda of some origin; I just need to understand what one it is. As noted previously, the shoes that are fitted to the backing plate are 25 mm wide units. Given the amount of machine work thus far to get this unit matched to the Suzuki wheel and the WP forks, I ain’t going to go looking for a Suzuki unit and start over again.

[LWC82PE]

SBS book says 130 x 25mm for those Hondas.  EBC says 130 x 30. RM is 130 x 22. I am only trying to help.

Is there a chance the 30mm shoes have been made narrower to be 25mm? I cant find any 130 x 25 TLS shoes that look like the ones above.

[Mick D]

SBS book says 130 x 25mm for those Hondas.  EBC says 130 x 30. RM is 130 x 22. I am only trying to help.

  Me too Liegh.
           And that’s fair enough. 

At work so don't have access to the drum, will check that tonight. The shoes are 25mm wide.

In retrospect, measuring the drum diameter is pointless as the drum that I have is the RM unit and obviously not the correct hub for what I was told was an RM125 backing plate.

As it appears, the brake unit is a Honda of some origin; I just need to understand what one it is. As noted previously, the shoes that are fitted to the backing plate are 25 mm wide units. Given the amount of machine work thus far to get this unit matched to the Suzuki wheel and the WP forks, I ain’t going to go looking for a Suzuki unit and start over again.

         And as far as your problem goes Bahnsy, I have been spending some time studying the same catalogues that Leigh has, in an effort to help you. Frankly it’s like trying to help someone decipher his broken  stone hieroglyphics tablet, while he’s still hiding the missing corner piece in his back pocket. Best of luck with that Bahnsy,  I hope you sort it.


     Merry Christmas.
         Cheers, mick.     

[LWC82PE]

Ok I can live with a mistake once but I should point out its not Leigh its Leith and pronounced Layth.  Dont worry i get it all the time. Thankyou

As for the shoes i guess we shall see but i reckon they are machined down 30's or they are some aftermarket ones as obviously the catalogues vary one says 25mm wide and one 30mm.