|
|
Post by Jay TrackAddict on Aug 1, 2017 10:11:26 GMT
I bought myself a second hand set of Team Dynamics Pro Race 1.2's a couple of weeks ago on ebay. The seller described them as "requires a refurb" he wasnt wrong!
They all could do with a bit of paint which isnt an issue but 2 of them have cracks on the inside. There not huge but obviously not ideal.
Has any one had experience with welding and repairing wheels? Ideally I dont want to be throwing these wheels away if I can help it.
If anyone has any recommendations for places that can carry the work out as well that would be great.
|
|
|
|
Post by smallspeed on Aug 2, 2017 13:53:02 GMT
I could have sorted this for you up until a month or so ago but my link-man has moved! The key thing is to drill out the end of the crack to prevent it propagating and then dress it correctly before welding so you get what is called a "v-weld with deep root". Drilling through the end of the crack with a small-ish (3mm-4mm is about right) drill prevents the crack spreading, basically by removing the sharp end of the crack. If you don't do this because the end of the crack is so thin you will get no penetration right at the tip (so many innuendos) and the crack will just pick-up from where it left off and spread again. If you get a stress riser at the end of the weld, potentially it carries on as it was doing and heads backwards in two directions (like a Y shape) either side of the weld! By drilling it out you make the end of the crack large enough that you can puddle weld in this area and get a solid weld-stop point with zero stress risers or un joined bits.. Hopefully that makes some sort of sense? If not I will do some sketches!  |
|
|
|
Post by Jay TrackAddict on Aug 2, 2017 15:31:24 GMT
I am so into penetrating cracks but we'll talk about that another time.
I was speaking to a couple of guys in a fab shop and they reckon they can sort it. They did mention drilling it at the end to prevent the crack coming back. I think I might let them have a go at it.
If not I have found a place that can sort it.
First job is to get the tyres off and check them for any buckles I think.
|
|
|
|
Post by smallspeed on Aug 2, 2017 21:22:46 GMT
Hahahahahahaa!!
Drilling....penetration....cracks....deep-root-welds
It's almost as good as the new range of "hot slag buckets" we introduced at work!!
|
|
|
|
Post by Jay TrackAddict on Aug 3, 2017 11:40:10 GMT
I need to order a bucket of hot slags! Do you have one that fits a CAT 6030...
|
|
|
|
Post by eurorob on Aug 3, 2017 12:07:45 GMT
The team dynamics are known for cracking, from past experience and having had a few done before in the past, any cracked wheel in my book is scrap, there never right again after a repair, I know it's throwing money away but better to cut your losses than end up with other issues down the line,
|
|
