Author Topic: Front Brake Perch Versions.....  (Read 6277 times)

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Online moonpup

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Front Brake Perch Versions.....
« on: June 13, 2016, 09:29:05 AM »
I've always thought that there were 2 versions of the front brake perches on the 350's. Turns out there were 3.....

The first one pictured is the 67-69 GTR perch, without casting for the front brake switch.

The second picture shows the 70-71 GTO/GTR version with the casting & threaded out hole for the brake switch.

Which brings us to the "oddball" 3rd. version.  ??? This one has the built up casting for the switch but is not machined out to be able to accept it . ( I have 2 nos versions of this type, so I don't think it was just a "one-off" fluke) It apparently fits somewhere between the other two, but for the life of me I can't find any necessity for this version.  :o
« Last Edit: June 13, 2016, 09:58:47 AM by moonpup »
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Offline slawsonb

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Re: Front Brake Perch Versions.....
« Reply #1 on: June 13, 2016, 09:45:04 AM »
Just speculation, but it could have been a replacement for the 67-69 bikes without switches, after the switch perches were introduced. Simplified manufacturing with only one base perch...??? But really, who knows!  ;D
...bert

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Re: Front Brake Perch Versions.....
« Reply #2 on: June 13, 2016, 09:57:43 AM »
Just speculation, but it could have been a replacement for the 67-69 bikes without switches, after the switch perches were introduced. Simplified manufacturing with only one base perch...??? But really, who knows!  ;D
...bert

You probably hit the nail on the head Bert.... that’s the only thing I could think of.

However, being a sucker for stock and originality, I’d have been pissed if back in the day I had a GTR & need to replace mine and this was all that was available. I guess it was better than nothing.
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Offline BRT-GTR

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Re: Front Brake Perch Versions.....
« Reply #3 on: June 13, 2016, 10:54:08 AM »
        Like you Moonpup, I've got a couple of the later undrilled brake perches. The overall quality of finish on them is not as good as the original early BS items, being only polished on their top face.
        Agree with Bert, that they used the same casting for early/late replacement perches, omitting the brake switch drilling as required. My money would be on them being Taiwan manufactured.
       I am always amazed / frightened? how thin the the metal section is that supports the outer end of the perch which carries the brake cable adjuster. Let's hope they got the alloy metallurgy right if I ever decide to use one.  ::) ::) :(
     Brian.
« Last Edit: June 13, 2016, 11:05:33 AM by BRT-GTR »
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Offline CL-100

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Re: Front Brake Perch Versions.....
« Reply #4 on: June 13, 2016, 03:47:58 PM »
I have never seen the version 1 perch before but I have a few of the version 3 type.  I've been trying to find one that isn't drilled out for the front brake perch on my '68 GTR, but haven't had any luck.  I'm currently using one of the "version 2" type for now.  Guess I should look for version 1 type for a '68.

I learned something new today, ...thanks Moonpup.

Offline dcr

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Re: Front Brake Perch Versions.....
« Reply #5 on: June 13, 2016, 03:55:55 PM »
My 68 GTR has the one with the hole drilled and tapped for the brake switch - but doesn't have the brake switch.
1966 175 DT and 1968 350 GTR

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Re: Front Brake Perch Versions.....
« Reply #6 on: June 13, 2016, 03:57:27 PM »
Hey CL-100, I'll trade you my version 1 (or one of the nos version 3's) for your version 2.  ;D
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Offline CL-100

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Re: Front Brake Perch Versions.....
« Reply #7 on: June 14, 2016, 09:15:53 AM »
Moonpup, 

Sounds good.  I'll PM you later today.

cl-100

Offline disc_valve

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Re: Front Brake Perch Versions.....
« Reply #8 on: June 15, 2016, 05:56:56 AM »
How about that!

I had one of those perches years ago, and I assumed it was the result of a screw up in the factory (some one forgot to drill it),  but Bert's explanation sounds better. In the end, I set to with Dremel, files and polishing kit and removed the extra material to convert it back to ab early-type perch.

Graham

Offline davis

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Re: Front Brake Perch Versions.....
« Reply #9 on: June 17, 2016, 06:41:47 AM »
Anyone else willing to swap a type 2 for a type 1? Are switches available?

Offline OldSwartout

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Re: Front Brake Perch Versions.....
« Reply #10 on: June 17, 2016, 08:11:02 AM »
Richard Clark still has switches, at least he did a few months ago.
Karl Swartout
Mooresville, IN
BS175 Roadracer
BS350 GTR

Offline slawsonb

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Re: Front Brake Perch Versions.....
« Reply #11 on: June 17, 2016, 11:41:42 AM »
I bought a switch less than a year ago from RC to add the front brake function to my '67 GTR (no not pure 'pup...;-)
...bert

Offline MitchB

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Re: Front Brake Perch Versions.....
« Reply #12 on: August 29, 2016, 03:44:54 PM »
I bought a switch less than a year ago from RC to add the front brake function to my '67 GTR (no not pure 'pup...;-)
...bert

+1....

Offline slawsonb

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Re: Front Brake Perch Versions.....
« Reply #13 on: August 29, 2016, 04:58:22 PM »
Looks like we are starting a non-purist movement...lol

Offline OldSwartout

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Re: Front Brake Perch Versions.....
« Reply #14 on: August 30, 2016, 08:32:37 AM »
I bought a switch less than a year ago from RC to add the front brake function to my '67 GTR (no not pure 'pup...;-)
...bert
That's the reason I needed one, too.  I had already modified mine several years ago and was replacing the first one that went bad.
Karl Swartout
Mooresville, IN
BS175 Roadracer
BS350 GTR

Online moonpup

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Re: Front Brake Perch Versions.....
« Reply #15 on: August 30, 2016, 10:45:40 AM »
Looks like we are starting a non-purist movement...lol

I'm calling on all my fellow purists to gather and strike down this awful revolution immediately!  :P
Confucius say... "Better to have Bridgestone than Kidneystone"

Offline slawsonb

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Re: Front Brake Perch Versions.....
« Reply #16 on: August 30, 2016, 10:56:09 AM »
Viva la revolution!
...bert

Online moonpup

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Re: Front Brake Perch Versions.....
« Reply #17 on: August 30, 2016, 11:26:21 AM »
Viva la revolution!
...bert

Sacre Bleu!

... le Pup
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Offline BRT-GTR

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Re: Front Brake Perch Versions.....
« Reply #18 on: August 31, 2016, 06:25:09 AM »
         Let he who has not sawed through a Bridgestone frame cast the first 12mm bolt...... ;D :D ;D   Actually, a  'Stone'  would  be more appropriate.

         El   Briann.
« Last Edit: August 31, 2016, 07:15:19 AM by BRT-GTR »
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Offline slawsonb

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Re: Front Brake Perch Versions.....
« Reply #19 on: August 31, 2016, 11:15:02 AM »
Well put Señor Briann!
...bert

 


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