1975 Redline Squareback 
#1 2009-01-27 12:03pm
- Prosixtyfive
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1975 Redline Squareback
1975 Redline Squareback
75 Red Line Square back .
My Red Line Square Back.This is a 75 that has had a repair with a 76 gusset put on and then renickeled.Love this bike ,brings me back to a happier place.
Chasing 75 Redline Square back forks,pk frames and cool old jerseys
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#2 2009-01-27 1:08pm
- KenC
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Re: 1975 Redline Squareback
Very nice, I'm building a 74
Who did the repair and installed the gusset?
What is the serial number?
I’m looking for a clean 1975 Mongoose (long) frame, and a nice original finish Mongoose Two/Four
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#3 2009-01-27 2:34pm
- Roc
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Re: 1975 Redline Squareback
is that my old 75 1/2? Good to see it built up 
WTB: 26" Cycle Pro Snakebellys Fat/Skinny Black/Tan
WTB: WEBCO Stem
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#4 2009-01-27 10:34pm
- MADDAWG
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Re: 1975 Redline Squareback
WOW , amazine build . Very very nice
. IL/WI Border area O.G.O.A.R.
Option #2 is in FULL EFFECT
Rule #9 :If you are out riding in bad weather, it means you are a badass. Period.
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#5 2009-01-27 10:40pm
- Prosixtyfive
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Re: 1975 Redline Squareback
KenC wrote:
Very nice, I'm building a 74
Who did the repair and installed the gusset?
What is the serial number?
Sorry i dont know who did the repair .
But i think it was done back in 76.
The serial # is 333
Chasing 75 Redline Square back forks,pk frames and cool old jerseys
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#6 2009-01-27 10:42pm
- Prosixtyfive
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Re: 1975 Redline Squareback
Roc wrote:
is that my old 75 1/2? Good to see it built up
Well it probable is ,i cant remember .I do love it though.
Glynn
Chasing 75 Redline Square back forks,pk frames and cool old jerseys
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#7 2009-01-27 11:31pm
- mongoosedrummer
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Re: 1975 Redline Squareback
Very cool... Gotta love the Squarebacks! 
Last edited by mongoosedrummer (2009-01-27 11:32pm)
A "Squonk" is like a Mongoose only much harder to find...
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#8 2009-01-28 5:59am
- KenC
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Re: 1975 Redline Squareback
Prosixtyfive wrote:
KenC wrote:
Very nice, I'm building a 74
Who did the repair and installed the gusset?
What is the serial number?Sorry i dont know who did the repair .
But i think it was done back in 76.
The serial # is 333
WOW!
I’m not positive it is the same one but I read a story of a 75 Squarebcak that Lynn had repaired and installed a 76 gusset. You have something there if it is the same frame.
I’m looking for a clean 1975 Mongoose (long) frame, and a nice original finish Mongoose Two/Four
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#9 2009-01-28 10:53am
- Roc
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Re: 1975 Redline Squareback
Prosixtyfive wrote:
KenC wrote:
Very nice, I'm building a 74
Who did the repair and installed the gusset?
What is the serial number?Sorry i dont know who did the repair .
But i think it was done back in 76.
The serial # is 333
Glynn,
You bought this from me, off Ebay last year. The repair was done by Lynn Kastin himself. The replacement '76 gusset and welds are Factory repairs. I don't know of another '75 frame with a '76 gusset. Glad to see her built up.
WTB: 26" Cycle Pro Snakebellys Fat/Skinny Black/Tan
WTB: WEBCO Stem
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#10 2009-01-28 3:29pm
- Prosixtyfive
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Re: 1975 Redline Squareback
Roc wrote:
Prosixtyfive wrote:
KenC wrote:
Very nice, I'm building a 74
Who did the repair and installed the gusset?
What is the serial number?Sorry i dont know who did the repair .
But i think it was done back in 76.
The serial # is 333Glynn,
You bought this from me, off Ebay last year. The repair was done by Lynn Kastin himself. The replacement '76 gusset and welds are Factory repairs. I don't know of another '75 frame with a '76 gusset. Glad to see her built up.
Hi Roc ,
thats cool ,thanks for the reply.Lin Kastim himself, wow.
Have put on square back forks on her now,looking better.
Glynn
Chasing 75 Redline Square back forks,pk frames and cool old jerseys
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#11 2009-01-28 3:53pm
- KenC
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Re: 1975 Redline Squareback
Roc wrote:
Prosixtyfive wrote:
KenC wrote:
Very nice, I'm building a 74
Who did the repair and installed the gusset?
What is the serial number?Sorry i dont know who did the repair .
But i think it was done back in 76.
The serial # is 333Glynn,
You bought this from me, off Ebay last year. The repair was done by Lynn Kastin himself. The replacement '76 gusset and welds are Factory repairs. I don't know of another '75 frame with a '76 gusset. Glad to see her built up.
WOW! I wish I seen it on the bay, I completely missed that one, good thing for you Glynn because I would have bid against you, Sorry! 
Let me know if you ever decide to sell it Glynn.
I have read several interviews that Lynn had done and in one of them he mentions that frame, I need to dig it up and read it again. I printed out several of the interviews so I hope it is in one of them.
I’m looking for a clean 1975 Mongoose (long) frame, and a nice original finish Mongoose Two/Four
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#12 2009-01-28 4:17pm
- Prosixtyfive
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Re: 1975 Redline Squareback
KenC wrote:
Roc wrote:
Prosixtyfive wrote:
Sorry i dont know who did the repair .
But i think it was done back in 76.
The serial # is 333Glynn,
You bought this from me, off Ebay last year. The repair was done by Lynn Kastin himself. The replacement '76 gusset and welds are Factory repairs. I don't know of another '75 frame with a '76 gusset. Glad to see her built up.WOW! I wish I seen it on the bay, I completely missed that one, good thing for you Glynn because I would have bid against you, Sorry!
I have read several interviews that Lynn had done and in one of them he mentions that frame, I need to dig it up and read it again. I printed out several of the interviews so I hope it is in one of them.
Mate id love to get a copy of the interview if you do find it.
Im a lucky man to have grabed this one.Im thinking of selling another SB that i have here,if you keen.
Glynn
Chasing 75 Redline Square back forks,pk frames and cool old jerseys
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#13 2009-11-27 10:06pm
- mongoosedrummer
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Re: 1975 Redline Squareback
What a story... Amazing.
This bike is absolutely nuts... I'd steal it in a heartbeat if I could. LOL! 
A "Squonk" is like a Mongoose only much harder to find...
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