Dual Leading front brakes on a Pre82/Evo Legal or not?

[Mick D]

Before I finish my build, is it OK for me to put a Dual Leader drum of another bike on to my 81 Maico for Racing? NSW?
Say from a bike that never had linkage, water cooling etc ?
Like from an early 465 Yammie?

Please, I don't want to start another shit fight.
I just want to know if what I am doing is OK? to save turning up and being told no.

Thanks in advance

[KTM47]

The only brake that would/should be considered legal for both interpretations of the rules is the H model Yamaha YZ465 hub and backing plate with the 45 deg lug.  I adapted one years ago using a preston petty no dive system.  I ended up taking mine off because the Maico Only twin bolt backing plate with soft brake shoes was almost as good.

[Mick D]

The only brake that would/should be considered legal for both interpretations of the rules is the H model Yamaha YZ465 hub and backing plate with the 45 deg lug.  I adapted one years ago using a preston petty no dive system.  I ended up taking mine off because the Maico Only twin bolt backing plate with soft brake shoes was almost as good.

Thanks Kevin,
The Maico only one, is a bit exy for me at the moment.
And I have some of the YZ465H ones in my hoardings.
I am a little fearful of the old magnesium OEM ones.

[Mick D]

[Mick D]

I would like to fit a dual leader if legal. thanks.

[LWC82PE]

You could use something from a 70's road bike or convert stock plate to TLS by adding another pivot. I have seen this done before.

[evo550]

The only brake that would/should be considered legal for both interpretations of the rules is the H model Yamaha YZ465 hub and backing plate with the 45 deg lug.  I adapted one years ago using a preston petty no dive system.  I ended up taking mine off because the Maico Only twin bolt backing plate with soft brake shoes was almost as good.

IT 465 's, Husky's as well.

[Brian Watson]

Husky DLS did not appear until '83..

[evo550]

Husky DLS did not appear until '83..

The gcr's don't have a pre "82 class only Evo which Husky's, some up to 1984 build are eligible for Evo class.
Pre '82 is a club thing, and as I understand there are post 1981 build bikes eligible for this class, including the husky's mentioned above.

[Nathan S]

If you want to be 100% legal at all events run to Evo or Pre-82 rules, then you need to use the TLS brake from a Pre-1982 bike that came with no linkage, air cooling.

To the best of my knowledge, this means te angled lug brakes from any of the following:
1980 YZ465G;
1981 YZ250H;
1981 YZ465H.
The 1984 YZ125L also has an angled lug TLS front brake which is operationally identical, and would take an extremely well trained eye to pick from the earlier parts. I would argue that it is a legitimate carry-over part.

It appears that the National level of the sport, the current interpretation will allow other TLS front brakes l, including those fitted to 1982 and newer models.

[80-85 husky]

so 83 a/c, twinshock drum brake husky is not legal? or could be considered not legal?

[Nathan S]

For Evo, apparently yes.
I won't comment on Pre-82 without checking the regs (which
I'm not going to do on this f$&king POS phone!).

[Momus]

Rule is a nonsense and a logical perversion. Why can't I run the very nice CR450 TLS on my EVO project?

[skypig]

I'm no expert, but when I was first made aware of the popular Evo class it sounded good, fair and simple: Bike was originally delivered with air cooling, drum brakes, and no linkage, was the way it was explained to me. By extension any part sourced from a bike that met that criteria would also be ok. We all understand the manufacturers embraced these advances on different year models, hence no date/year model cut off.

[smed]

so 83 a/c, twinshock drum brake husky is not legal? or could be considered not legal?

EVO yes, pre 82 no coz it's 83