Thread: heli coils
View Single Post
Old Mar 2, 2011 | 08:51 PM
  #5 (permalink)  
onehundred80's Avatar
onehundred80
Senior Member
Joined: Apr 2006
Posts: 25,432
Likes: 649
From: Ontario
Default Re: heli coils
Get a new hub - that's a simple solution and the best one.
As outlined above it is not at all good to have a bolt that is not perpendicular to the hub face, as this puts undue stresses on the bolt and those expensive rims.

If I was forced to do a fix for whatever reason I would choose Keenserts over Helicoils. I would take off the hub and have it tapped on a mill. Drilling out ruined threads is hard as the drill will take the easiest route through the steel and with uneven traces of the threads the drill will flex and wander.
The hole would need to be accurately aligned to the others and the material removed with a end cutting milling tool. The hole could then be drilled to size and tapped.
This would be more expensive in most cases than a new hub.
http://www.bjg-design.com/designbook...NS-KNS-KNS.pdf
 
Reply
0