-
I saw someone recently on mtbr saying that its best to place dt holes in the upper half of the tube.
Their reasoning was that in general the forces acting on the dt/tt/ht assy are working to pull the ht off the other two. So the underside of the dt is in tension and the upper parts are in compression, as the heat tube levers off the top of the mitre.
They said holes are more likely to fail in tension and so the best bet was to put them in the top of the tube where the stresses are best suited to a hole. IDK how true this is, but it makes sense.I think its still wise to reinforce it a fair bit as there's alot of stresses up there. And to make sure to not put it in the butt transition zone.
-
What tubing is it? Waffer thin Spirit or True Temper S3, or Gas Pipe Special?
You are reading a single comment by @M_V and its replies.
Click here to read the full conversation.
Biggles567
Brommers
@M_V
What does everyone think about drilling (and just drilling) holes in steel tubing for dynamo cable routing?
It's on my own bike, the one I've changed the back end on recently. Wish I'd thought about it before painting it so I could do some sort of reinforcement but alas I did not.
It's fixed with only a front brake so there's no other cabling to route the dynamo cable along to a rear light. I would go for di2 guides but I've read they are actually a bit shit at sticking to stuff and given my paintjob is splatters and all bumpy I think there's nae fucking way they'll stick to my frame so I'm thinking drilling either the top or downtube is the only way to keep it neat.
Could probably drill the DT near the headtube, run it down there, around the bb, along the chainstay and out the breather that's already in the hooded Surly style track end. Might need to enlarge the breather slightly but I don't think that's too dangerous.