26 replies to this topic

[steve27bha]

Four years ago in post #14 above I reported:-

I used a Rawlbolt to remove the front bearing collar......

I've done it again at least once since, using the same tools quite successfully and quickly.

 

This year my Rawlbolt would not go into the hole in the collar because the mini circular spring holding the four leaves of the expanding part had got crossed and they jammed at the entry to the hole. Pic 1 shows the poorly shaped spring. I tried to reshape the spring but its springiness defeated me.

 TDM extractor 2018 010.JPG   146.85KB   22 downloads

 

No problem, I think, I'll just get another. Oh no I won't, not in my town anyway. Loads of the cast variety, none of the stamped metal type. However while discussing the problem with the clued-up assistant I spied expanding bolts for plasterboard on display. Got some of them, I think. See pic #2

That pic shows the before and after of a successful extraction.

 TDM extractor 2018 023.JPG   311.27KB   16 downloads

 

The bolt collar was held by a locking plier and the bolt head turned by a loooong Phillips screwdriver to expand and mash the body inside the hole. Pic #3. Gentle taps were needed to remove the combo but, it worked.

 TDM extractor 2018 020.JPG   180.76KB   17 downloads

 

These bolts are more easily found than the required Rawlbolt, but are obviously not reusable!

I do wonder if the bike has been chilled and the frame has contracted with the recent spell of sub-zero weather. Next time I might give a gentle waft of the blowtorch around the mounting lugs first, but there's all that grease to consider. Hmmmm

 

Darling, can I borrow your super-hot hair drier?

 

[fixitsan]

Four years ago in post #14 above I reported:-

I used a Rawlbolt to remove the front bearing collar......

I've done it again at least once since, using the same tools quite successfully and quickly.

 

This year my Rawlbolt would not go into the hole in the collar because the mini circular spring holding the four leaves of the expanding part had got crossed and they jammed at the entry to the hole. Pic 1 shows the poorly shaped spring. I tried to reshape the spring but its springiness defeated me.

TDM extractor 2018 010.JPG

 

No problem, I think, I'll just get another. Oh no I won't, not in my town anyway. Loads of the cast variety, none of the stamped metal type. However while discussing the problem with the clued-up assistant I spied expanding bolts for plasterboard on display. Got some of them, I think. See pic #2

That pic shows the before and after of a successful extraction.

TDM extractor 2018 023.JPG

 

The bolt collar was held by a locking plier and the bolt head turned by a loooong Phillips screwdriver to expand and mash the body inside the hole. Pic #3. Gentle taps were needed to remove the combo but, it worked.

TDM extractor 2018 020.JPG

 

These bolts are more easily found than the required Rawlbolt, but are obviously not reusable!

I do wonder if the bike has been chilled and the frame has contracted with the recent spell of sub-zero weather. Next time I might give a gentle waft of the blowtorch around the mounting lugs first, but there's all that grease to consider. Hmmmm

 

Darling, can I borrow your super-hot hair drier?

 

 

 

Hot air paint stripper does it for me Steve. You're welcome to borrow it any time

[steve27bha]

Thanks, Chris.

 

I went looking online for a new Rawlplug and found they are named Shield Anchors and come in a variety of sizes and configurations. The Toolbox chain seems to have a good stock and there's one not far from me, but I don't need a set of ten!

So I had a think about what to use to replace the distorted springy wire and had a Eurika moment regarding my Aldi box of O rings. I reassembled the bolt with a pair of the small ones to get:-

 Rawlplug fixed 002.JPG   250.98KB   0 downloads

 

The rubber will get in the way of inserting the bolt (stop sniggering at the back) but I should be able to roll the front one back once the bolt has started into the hole. I'll have to wait to next year's service to find out.

Edited by steve27bha, 09 February 2018 - 10:57 pm.

[Favs]

Once round with some sticky tape?

[fixitsan]

Once round with some sticky tape?

 

....said the actress to the bishop

[steve27bha]

Once round with some sticky tape?

I reckon even that would make the overall diameter too big for the hole, and also restrict or even prevent the leaves from expanding to do the job intended.

[Johnners]

This worked well for me when getting the corroded bush out:
https://www.amazon.c...7LbL&ref=plSrch