Front Brake Stay/Fork?

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Front Brake Stay/Fork?

Post by johnu »

My 74 tr5mx was just roughly assembled when I got it with 18" road wheels on it. I put the 21" mx wheel in and there is no way to connect up the front brake stay arm? I'm wondering if the forks are not the correct mx forks <201
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Re: Front Brake Stay/Fork?

Post by BasilF »

The right side slider should look like this.
fork.jpg
The upper attachment is for the 6inch brake and the lower is for the 8inch brake.
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Re: Front Brake Stay/Fork?

Post by 2manyrides »

That stay nut on the brake plate belongs behind the right fork???? Don’t know. It has been so long since I have bolted one of those brakes to my forks.
Last edited by 2manyrides on Tue Apr 07, 2020 1:58 am, edited 1 time in total.
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Re: Front Brake Stay/Fork?

Post by minetymenace »

If you are going to use a brake stay it MUST be under tension, buy you don't need one if you assemble it correctly!
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Re: Front Brake Stay/Fork?

Post by johnu »

minetymenace wrote: Sun Apr 05, 2020 9:53 pm If you are going to use a brake stay it MUST be under tension, buy you don't need one if you assemble it correctly!
Yes you are correct about it needing to be under tension (mechanical engineering background). Could you explain how to assemble without the need for the stay? I don't want to try to reinvent the wheel :mrgreen:
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Re: Front Brake Stay/Fork?

Post by Johnq1 »

A pic of mine
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Re: Front Brake Stay/Fork?

Post by minetymenace »

me wrote:you don't need one if you assemble it correctly!
My bad, of course the "T" has a smaller hub, see Johnq1's picture...sorry!
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Re: Front Brake Stay/Fork?

Post by BasilF »

:smile: I think your mount has been cut off by an SS owner. I did that with mine. Still have the bit. perhaps you could evostick it on.
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Re: Front Brake Stay/Fork?

Post by minetymenace »

BasilF, if you could let me have the part number for that, I'll add it to the parts list.
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Re: Front Brake Stay/Fork?

Post by BasilF »

Part number 20-0104
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Re: Front Brake Stay/Fork?

Post by johnu »

BasilF wrote: Sun Apr 05, 2020 6:46 am The right side slider should look like this.fork.jpg
The upper attachment is for the 6inch brake and the lower is for the 8inch brake.
Ok thanks. My fork leg doesn't look exactly like that. I don't have that attachment point on the back side and I also don't have the rib on the outside. I can't see any evidence of the attachment lug being cut off, if it was they did a really good job!
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Re: Front Brake Stay/Fork?

Post by minetymenace »

BasilF, Thankyou LMFAO <215 :ban
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Re: Front Brake Stay/Fork?

Post by Jeff K »

I do not think that the 1971 OLF 250's had the rib on the forks, I think that came on the later models. I was told years ago that was how you could spot the correct forks for the TR5T . " Look for the rib".
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Re: Front Brake Stay/Fork?

Post by ghislain »

It's just the first years of OIF who had the rib... and Johnu, maybe you have two left sliders on your fork ...and seems to me that 74' models had no more the rib ...in fact my friend robert's 74' TR5T hasn't and it's a standard machine , never modified..
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Re: Front Brake Stay/Fork?

Post by minetymenace »

I thought ribs were early too, but it cant be two left sliders as it does have a lug for the large conical hub. My best guess is that part No 20-0104 has been removed. What ever the history, you need the correct tube or to modify the one you have.
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Re: Front Brake Stay/Fork?

Post by Jeff K »

I had a old man moment and posted it backwards. It is the early forks the had the rib. I have three stock 1971 250's and 2 spare front ends for them. They all have the "rib". Another set that I have that is the later forks does not have the rib. I will check my stock 1974 TR5T later. At my age, my brain is getting too full. When I learn something new, I have to forget something else to make room for it. :thumb
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Re: Front Brake Stay/Fork?

Post by midgie »

Its a later bsa/tri slider for the models that only used the 8" conical front hub.
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Re: Front Brake Stay/Fork?

Post by minetymenace »

Thanks for putting us straight midgie, what took you so long? :thumb
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Re: Front Brake Stay/Fork?

Post by johnu »

midgie wrote: Tue Apr 07, 2020 2:04 pm Its a later bsa/tri slider for the models that only used the 8" conical front hub.
Ok thanks! I'm not sure that these are the original forks for the bike as this one is an mx model but at least now I know I have to modify it somehow.
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Re: Front Brake Stay/Fork?

Post by midgie »

minetymenace wrote: Tue Apr 07, 2020 2:07 pm Thanks for putting us straight midgie, what took you so long? :thumb
I was enjoying it!
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