Yet Another Cycling Forum

General Category => The Knowledge => Topic started by: aidan.f on 21 July, 2022, 05:29:53 am

Title: BB in ti frame. grease, and or tape / threadlock?
Post by: aidan.f on 21 July, 2022, 05:29:53 am

My first ever ti build, what's best please?
Waterproof grease? PTFE plumbing tape or Threadlock?

Title: Re: BB in ti frame. grease, and or tape / threadlock?
Post by: LittleWheelsandBig on 21 July, 2022, 06:00:01 am

https://www.ticycles.com/components/lubricant-finish-line-ti-prep-anti-seize

Title: Re: BB in ti frame. grease, and or tape / threadlock?
Post by: De Sisti on 21 July, 2022, 06:20:26 am

I used Copperslip anti-seize grease in mine.

Title: Re: BB in ti frame. grease, and or tape / threadlock?
Post by: robgul on 21 July, 2022, 07:30:02 am

When I built up my first Van Nicholas from F&F VN themselves said to use a copper grease for the BB (and also on braze-on bolts - e.g. bottle cage, mudguards, rack)

Title: Re: BB in ti frame. grease, and or tape / threadlock?
Post by: rogerzilla on 21 July, 2022, 08:11:04 am

Logic would dictate anti-seize to prevent galling, but Royce Ti BBs in steel frames use threadlock (probably because most have no lockrings).

Title: Re: BB in ti frame. grease, and or tape / threadlock?
Post by: Captain Nemo on 21 July, 2022, 08:32:41 am

Agree - "copperslip" anti-seize type grease.

I bought some Loctite C5-A ( https://www.henkel-adhesives.com/uk/en/product/anti-seize-lubricants/loctite_lb_8008_c5-a.html ) when I got my Merlin frame back in the last century (1999) and still going strong.

Even although C5-A sounds like a Lockheed Galaxy, I can assure you it is just a pot of coppery grease.

Title: Re: BB in ti frame. grease, and or tape / threadlock?
Post by: aidan.f on 21 July, 2022, 12:16:17 pm

Thanks, plenty of good advice

Title: Re: BB in ti frame. grease, and or tape / threadlock?
Post by: LittleWheelsandBig on 21 July, 2022, 12:29:37 pm

Threads often have high contact pressures and, when the threaded components have similar hardness or other characteristics, galling can be a significant problem. Anti-seize avoids that problem.

Ti is fairly prone to galling. I figure a specific Ti anti-seize is probably the best choice for a Ti thread, though the difference in hardness compared to Al BB cups probably means this isn’t a major issue. I would be more concerned with SS bolts into Ti.

Copaslip encourages electrolytic corrosion which can be a problem in some circumstances.

Alumslip is generally better than Copaslip when wanting to apply anti-seize to aluminium components.

Title: Re: BB in ti frame. grease, and or tape / threadlock?
Post by: aidan.f on 23 July, 2022, 12:23:17 pm

I shall strip it and replace when I have the 'right stuff' build up including wheels  was Thursday, test ride round the block and now on a Scottish tour. Bit risky but nothing fell off, just a few minor adjustments to gears needed. It's a Sabbath September, rides really nicely and looks smart.