Re: Whitworth Time-Serts?

[Steve Swan]

i have a threaded hole in aluminum with Whitworth dimensions, has anybody heard of Whitworth Time-Serts?

[RichO]

SAE and metric but Whitworth? Maybe one of the parts providers in the UK might know.

[Steve Swan]

SAE and metric but Whitworth? Maybe one of the parts providers in the UK might know.

Rich, do you have a suggestion who in UK might be a source? i owe John Brooks an email, he probably would know...

[Cass]

Contact Tom or John Healy at Coventry Spares in Mass. 800-451-5113. They are a parts distributer for british parts.

Cass Ackroyd
Senior Field Judge for Brits

[Shaky Jake]

I have made them in the past by cutting the threaded portion off of a larger bolt, then drilling a hole in the center and tapping it to the desired size and thread pitch. It would be nice if they were readily available off the shelf though. There are a lot of old Brit bikes on this side of the pond.


Kevin

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[BoschZEV]

has anybody heard of Whitworth Time-Serts?

I realize you've asked about Time-Serts, which are different, but Helicoil-equivalents are available from Recoil:

https://www.afsrecoil.net/threadrepair/en/

Apologies if you already know this, but "Whitworth" is often confusingly used for both the thread form (55-deg. with rounded roots and crests) as well as for the coarse pitch fasteners. Despite the difference in thread form, for most purposes (except 1/2"-12) it's possible to substitute UNC for Whitworth. However, for British Standard Fine (BSF) (which has the same 55-deg. "Whitworth" thread form and which many people also call "Whitworth") none of the pitches match to a common U.S. fastener so there's no choice but to get the proper Recoil insert.

Recoils also are available in BSC and BA.

[Steve Swan]

I realize you've asked about Time-Serts, which are different, but Helicoil-equivalents are available from Recoil:

https://www.afsrecoil.net/threadrepair/en/

Apologies if you already know this, but "Whitworth" is often confusingly used for both the thread form (55-deg. with rounded roots and crests) as well as for the coarse pitch fasteners. Despite the difference in thread form, for most purposes (except 1/2"-12) it's possible to substitute UNC for Whitworth. However, for British Standard Fine (BSF) (which has the same 55-deg. "Whitworth" thread form and which many people also call "Whitworth") none of the pitches match to a common U.S. fastener so there's no choice but to get the proper Recoil insert.

Recoils also are available in BSC and BA.

Hello BoschZEV, thank you for your post, i appreciate you sharing your knowledge and experience. Spending a bit more time with the stud, it is Whitworth screws into the head and BSC fixes the nut that goes through the valve inspection cover. i still have a tiny bit of thread purchase, so once winter convenes, i shall effect the repair. Thanks for the referral site, afsrecoil.net