Odd bit on a frame - maybe odd person asking about it

TGR · Feb 11, 2014

Evening all,

I got this frame last weekend - it is a Raleigh ProRace and needs a good clean but it is great condition. I was looking at the frame and noticed that the brace behind the BB which normally joins the chainstays does not attach to the driveside chainstay. It is about 12mm short - what is the reason for this?

A pic -

The gap looks small in the pic - my fault (again)!!

Thanks all,

Richard

TGR · Feb 11, 2014

Better pic -

Richard

oonaff · Feb 11, 2014

bit of a mishap on the quality control front [trombone plays]

BobToo · Feb 11, 2014

It will be there to allow a mudguard to be clipped on, presumably they felt it wasn't required for strength. That doesn't explain why they didn't just have it going all the way across though.

TGR · Feb 11, 2014

I would doubt it, it is a bit obvious from all angles - even if my pics make it look hard to see.

When i got notification about this post I thought it would be some smart alec saying nothing about the frame just agreeing I was odd!!! LOL

Thanks,

Richard

TGR · Feb 11, 2014

Bobtoo,

That makes sense and there is no need for the additional metal of weld/brazing. I think you may be right.

Thanks,

Richard

FINNEY1973 · Feb 11, 2014

Can't provide you with an engineers reasoning why Raleigh chose to attach to one chainstay only, however this design seems to be a common approach from Raleigh's of that era ... see my picture down towards the bottom of this thread ... viewtopic.php?f=12&t=250275

Perhaps there was a specific mudguard set that Raleigh sold that just so happened to fit Raleigh frames via this appendage??

lewisfoto · Feb 11, 2014

that is a head scratchier for sure

Excel · Feb 11, 2014

seen that style of chainstay bridge a number of times on mass produced Raleigh frames, general consensus in the shop was whilst not essential for frame structure it served a purpose for a rear full mudguard clip however that doesn't answer why it wasn't brazed at both sides which would have improved the lower stiffness and general aesthetics
Griff

TGR · Feb 11, 2014

Thanks for that. It makes sense.

Richard

Odd bit on a frame - maybe odd person asking about it

TGR

Old School Grand Master

TGR

Old School Grand Master

oonaff

Senior Retro Guru

BobToo

Retro Guru

TGR

Old School Grand Master

TGR

Old School Grand Master

FINNEY1973

Senior Retro Guru

lewisfoto

Excel

Retro Guru

TGR

Old School Grand Master

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