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

[Mick D]

Thanks for the efforts and the explanations guys.
I wont need a sack to carry home trophies. Just wanted to confirm legalities but, thanks.
I have read the rules, just wanted to be sure to be sure.

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 the 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.

OK that's great, because them is what I gots for my EVO  Maico's.

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.

That is another one I have always wondered about?
For example; say a twin leader from a 1969 TS250? would it be OK to turn up with that front wheel on any PRE70 racer?

I mea.n could you use any twin leader that was available prior to 1975 on a pre75 racer? Just wondering?
Read the rules, but the question still remains.
And I reslise the equation is some sort of ratio of a heavier unsprung weight with better brake verses lighter unsprung weight with lesser brake?
Just wondering?

Thanks

[skypig]

Simple people like me think.

Could anyone have fitted a 1969 roadbike hub (for e.g.) to a 1974 model MX bike in 1974?
Yes. (and likely someone, somewhere,  did)

So how can't it be legal in pre 75?

[Mick D]

Simple people like me think.

Could anyone have fitted a 1969 roadbike hub (for e.g.) to a 1974 model MX bike in 1974?
Yes. (and likely someone, somewhere,  did)

So how can't it be legal in pre 75?

I agree wholeheartedly with you,,,,,,,,,,,,,,,,,,,,
I have read the rules over and see no prohibition ? ?

If it was available in the day?

[Rossvickicampbell]

Skypig - in your example who has said it isn't legal?

[Mick D]

I'm not going to do on this f$&king POS phone!).

F***, dont get me started with that pain.

A time saving tool, my arse

Smashed a phone, replaced it with the same one so I wouldn't have to do another uni course.
So much for that reasoning, sort of gets it sorted, well that ill do, I guess.
An Update comes through, "Improved security and stability" it says
Ummmh, I do banking and buying etc,,,,ummmh OK better say yes
So the battle between Samsung and its alliance and struggle for power with Google,,,,(*^^%$

Gone are all my saved documents
If I want to save any in future, I need to do it with an active logged account with Google from now 
on in their "Drive" (cloud thingy), So I can only access it if in reception range rather than a stored file in their cloud thingy. And my old stored files are Gone

These no privacy a/holes with a world domination agenda think I have nothing better to do every morning than to start another three month course on " how to use my property again because we don't give a shit what you want, its all about what we can scab from your keystrokes etc etec etc"
 better calm down before I have a stroke

Arrrhgged would be less painfull to use an old worn out magnesium Maico backing plate
Thats right, arrh front brakes,,,arrh the serenity,,,arrh thats better 

[Nathan S]

Simple people like me think.

Could anyone have fitted a 1969 roadbike hub (for e.g.) to a 1974 model MX bike in 1974?
Yes. (and likely someone, somewhere,  did)

So how can't it be legal in pre 75?

There USED TO BE a rule that prohibited road bike parts, but that was deleted a few years back. This allows era-correct road bike disc brakes in Pre-78 and earlier... For better or for worse..

[evo550]

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

OK pulled directly from pre '82 supp regs for Connondale classic this year. Note Husqvarna's eligibility up to 1984 models in this class....rule 82.1 (C).

Rule – Pre82 Acceptable machines and components: Pre ’82 Class
Pre82.1 Acceptable for the Pre82 class are machines and components built up to and including the 1981 model. The only exception to this
rule is where the model remains unaltered after this date are excluded under rule Pre82.2 or included under rule Pre82.10.
Pre82.2 Machines or components from machines sold with water cooled engines and/or linkage suspension are excluded. Adopting brakes
or wheels from period machines sold as road bikes is not permitted for motocross but is acceptable for dirt track.
Pre82.3 Modifying machines or components to comply will not be allowed. Period after market components, or replicas thereof, available for
complying models is acceptable. Components that have been improved for safety reason may be acceptable. It is acceptable to
build a machine by combining components from complying models.
Pre82.4 Engines, gearboxes and front forks must remain externally unchanged.
Pre82.5 Any carburettor type commercially available prior to 31 Dec 1981 may be used.
Pre82.6 All machines will be fitted with an effective muffler and comply with sound control regulations in GCR 16.12.
Pre82.7 Folding footrests must be fitted.
Pre82.8 Countershaft sprocket covers will be fitted.
Pre82.9 The handlebars must be equipped with a protection pad on the cross bar. Handlebars not fitted with cross bar must be equipped
with a protection pad located in the middle of the handlebars covering the handlebar clamps.
Pre82.10 Acceptable follow on models for the Pre82 class and must also satisfy Pre82.2 and Pre82.3 are:
a) Yamaha DT175
b) Suzuki TS185
c) CR/OR/WR/TE/AE Husqvarna models up to the 1984 model without water cooling.
d) 82 model Yamaha IT 250 and 465
e) 82 model Maico GS 250 and 490 with twin shocks.
Pre 82.11 Acceptable follow on components. Components that bolt straight in, that are not substantially changed. As per the approved list.
a) 82 model Maico 250 and 490 motor.

[Nathan S]

So yes, 83/84 Husky front brakes are also legal for Pre-82.

[bigk]

Momus you can fit & use a CR450 forks & brake if you ride with clubs who abide by the current & past national evolution rules as per the MOMS. The only time you'll have an issue is if you choose to ride an event with the two clubs who run a pre'82 class rather than an evolution class, which outlaws the use of said components. Confusing hey?
K

[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

OK pulled directly from pre '82 supp regs for Connondale classic this year. Note Husqvarna's eligibility up to 1984 models in this class....rule 82.1 (C).

Rule – Pre82 Acceptable machines and components: Pre ’82 Class
Pre82.1 Acceptable for the Pre82 class are machines and components built up to and including the 1981 model. The only exception to this
rule is where the model remains unaltered after this date are excluded under rule Pre82.2 or included under rule Pre82.10.
Pre82.2 Machines or components from machines sold with water cooled engines and/or linkage suspension are excluded. Adopting brakes
or wheels from period machines sold as road bikes is not permitted for motocross but is acceptable for dirt track.
Pre82.3 Modifying machines or components to comply will not be allowed. Period after market components, or replicas thereof, available for
complying models is acceptable. Components that have been improved for safety reason may be acceptable. It is acceptable to
build a machine by combining components from complying models.
Pre82.4 Engines, gearboxes and front forks must remain externally unchanged.
Pre82.5 Any carburettor type commercially available prior to 31 Dec 1981 may be used.
Pre82.6 All machines will be fitted with an effective muffler and comply with sound control regulations in GCR 16.12.
Pre82.7 Folding footrests must be fitted.
Pre82.8 Countershaft sprocket covers will be fitted.
Pre82.9 The handlebars must be equipped with a protection pad on the cross bar. Handlebars not fitted with cross bar must be equipped
with a protection pad located in the middle of the handlebars covering the handlebar clamps.
Pre82.10 Acceptable follow on models for the Pre82 class and must also satisfy Pre82.2 and Pre82.3 are:
a) Yamaha DT175
b) Suzuki TS185
c) CR/OR/WR/TE/AE Husqvarna models up to the 1984 model without water cooling.
d) 82 model Yamaha IT 250 and 465
e) 82 model Maico GS 250 and 490 with twin shocks.
Pre 82.11 Acceptable follow on components. Components that bolt straight in, that are not substantially changed. As per the approved list.
a) 82 model Maico 250 and 490 motor.

well there ya go i was wrong , the pre 82 class just further muddys the waters too me

[bigk]

Pre '82 not an issue for you Chris until you want to go to Heaven or QVMX event. Then & only then are the times you may have to adjust your EVO bike to comply. Everywhere else, the national EVO rules as per MOMS apply.
K

[smed]

Yeah I know , I ain't heading north with a bike anytime soon , Can't even get the time or readies to get to any Vic stuff lately, becoming a key board riding warrior ,    Gotta get in the dirt soon    

[Kenneth S (222)]

This thread was started as a legitimate question on what can only be described as a confusing but very relevant topic in our VMX community and all but one comment has been constructive and helpful so that one unnecessary comment has been deleted. Going forward I want all users to feel safe in this forum and to feel comfortable to ask such questions without the worry that any destructive comments might show up. As soon as I see or get wind of a comment I think is unnecessarily inflammatory or critical I will delete it and give only one warning to the forum member. OzVMX is here for all of us enthusiasts of old dirt bikes to enjoy our sport in good spirit.

[Graham]

Pre '82 not an issue for you Chris until you want to go to Heaven or QVMX event. Then & only then are the times you may have to adjust your EVO bike to comply. Everywhere else, the national EVO rules as per MOMS apply.
K

[Graham]

Pre 82.11 Acceptable follow on components. Components that bolt straight in, that are not substantially changed. As per the approved list.

Would someone like to confirm what the approved list is