Günter Haritz TI-Raleigh Professional Team Track Frame Reynolds 531 1975 GH6175

Gunter Haritz GH6175 1975 531 TI-Raleigh Team Track Frame

It’s been a busy week! First came SB4933, an SBDU 531SL frame with beautiful chrome and exquisite new paint. Following on quickly came SH377T, Steve Heffernan’s Reynolds 753 pursuit frame. And finally, to end the week, GH6175 has just arrived on the workbench, the second Raleigh frame of the week without an SB number. GH6175 is now my second TI-Raleigh Team track frame and joins the 1978 frame of Jan Raas, JR178T.

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SB1861 1977 SBDU Ilkeston TI-Raleigh Team Pro Reynolds 531 – Rebuild (Part One)

SB1861 1977 SBDU Ilkeston Reynolds 531 TI-Raleigh Team Pro Shimano 600EX Brake Levers

Sometimes my plans for builds go smoothly and sometimes those plans stall and start to back up. I started the rebuild of SB1861 a little while ago when I brought some gleaming shine back to the original paint. But since then, I’ve had a few new frames join the collection, and they jumped straight to the front of the queue. SB518, SB8851 and SB664 have all arrived, they’ve been photographed, documented and blogged about, so now it is time to clamp SB1861 back into the work stand and get this original 1977 SBDU bike back on the road.

SB518 1976 SBDU Ilkeston TI-Raleigh Team Pro Reynolds 531 – New Arrival

SB518 SBDU Ilkeston 1976 TI-Raleigh Team Pro Reynolds 531 Double Butted Blog Header

After selling one of my frames a few years ago (SB447), I promised myself that I wouldn’t sell another. These frames are sought after and I get lots of requests to part with them, but I decline them all. My frames form a very important collection – they document the materials, styles and features that Raleigh’s Specialist Bicycle Development Unit (SBDU) used throughout the lifetime of the unit and I’m close to having an example of most of these styles. However, I had a frame that was a duplicate of another and so I took the opportunity when it came to swap it, with the intention of enhancing my collection.

SB1861 1977 SBDU Ilkeston TI-Raleigh Team Pro Reynolds 531 – Frame Restore

SB1861 1977 SBDU Ilkeston Reynolds 531 TI-Raleigh Team Pro Restored Header

The last time you saw this frame, it was dirty, greasy, dusty and covered in spider’s webs. The parts were rusty and some were even beyond help. But after a few days and some hard work and elbow grease, the frame for SB1861 is looking so much better; although it did give me a bit of a issue.

Reynolds Tubing Wall Thickness Tube Gauge and Seat Pin Size

SBDU Ilkeston TI-Raleigh SB5794 1982 Reynolds Specifications

This post isn’t necessarily about the SBDU, but I thought I’d write it as I get asked regularly to confirm seat pin sizes, or to try and decipher what an SBDU frame might be made from based on the seat pin and tube size. After collecting several SB frames over the years, I’ve seen lots of different seat pin sizes used in Reynolds frames. I have seat pins ranging from 26.6 to 27.4 – and 753 frames with 4 different size pins. That demonstrates just how varied their tube gauges were. So here is a little post that lists some of the most common seat pin sizes and the associated Reynolds tube gauge (wall thickness).

TI-Reynolds Frame Weight – It’s Not an Exact Science

SB8945 SBDU Nottingham 753R 58cm Frame Weight

The search terms used by people who reach my blog are often connected to searching for information about the weight of a frame, specifically Reynolds 753 and Reynolds 531. So I thought I would write a little post to show the weight information I’ve collected on my own frames. I have frame weight data on several SBDU frames across a range of Reynolds tube sets. What I’ve found is that it isn’t simply a case of saying that every 57cm Reynolds 531 frame will weigh the same. Lots of factors influence frame weight.

1975 to 1976 Reynolds 753 Tubing SBDU TI-Raleigh Road Frames

Reynolds 753 TI-Raleigh SBDU Ilkeston Post Header

This is the post I’ve been most looking forward to writing and also fearing with equal measure… Reynolds 753 was a tube set that took the bicycle world by storm. It had unrivaled strength while being ultra light and thin for a steel tube. It is probably the most mis-understood tube set and the one that has the most stories connected to it.

1974 to 1975 Reynolds 531 Tubing SBDU TI-Raleigh Road Frames

Reynolds 531 Double Butted Tube Spec TI-Raleigh SBDU Ilkeston Post Header

I’ve wanted to write this post for a while, and I’ve tried to start and structure it a few times, but it has been difficult getting to grips with the scale of the subject. There was often either too much conflicting information or sometimes a complete lack of information about Reynolds tubes. Hopefully I’ve got a good grasp now, although it has still taken longer than expected to get all of this out of my head and crammed into a short, informative and hopefully coherent blog post.

1977 TI-Raleigh Team Pro SB1688 Reynolds 531 SBDU Ilkeston New Arrival

SB1688 1977 SBDU Ilkeston TI-Raleigh Team Pro Reynolds 531

Frame number 12 of the current collection arrived! This is SB1688, a 56cm Reynolds 531 frame made in the middle to latter part of 1977.

SBDU Ilkeston TI Raleigh Reynolds 531c 1982 SB5794 It’s a bit of a Mystery

SBDU Ilkeston TI-Raleigh SB5794 1982 Measuring

It’s been a few weeks since this little frame arrived, so after the small change of subject and posts about Dave Yates and his brilliant frame building course, it is back to the SBDU and Ilkeston built bikes.