Cracked ES2 case

Qside

Qside

VIP MEMBER
Joined
Sep 8, 2016
Messages
107
Country flag
Ok, I got over zealous while pushing in the bearing and the crankcase cracked. I suspect there may have been a hairline crack there before I started, but nonetheless I broke the bugger. This is a matching number bike project that I just acquired. 9 boxes of parts. A real puzzle. I am bummed that I already broke it. Anyways, do you think this case is salvageable? Anyone out there a good enough welder to help me? Otherwise I will need to hunt for replacement cases. Included are a few pictures of my mess. FYI: 1962 ES2
 

Attachments

  • Cracked ES2 case
    IMG_1024.jpeg
    186.8 KB · Views: 271
  • Cracked ES2 case
    IMG_1025.jpeg
    164.6 KB · Views: 244
  • Cracked ES2 case
    IMG_1026.jpeg
    233.7 KB · Views: 267
I dunno..... Anyone thinking laser welding like me? That's in a bad spot.
 
I didnt see any cases on ebay/uk. It needs to be for a featherbed frame. can you send me the link?
 
If you can find a pair of cases, it will be less headache than trying to weld/repair yours, but more heartache losing the matching numbers.

What is the ramification (legal and ethical) of transferring your numbers to another pair of cases?

Slick
 
Last edited:
Numbers are correct but I can't make it work either , stupid me or E-Bay ??. UK E-Bay .
 
Thank You, I saw that one. they quoted 120 pounds plus for shipping.
 
I’ve had much worse than that welded up before! Definitely repairable. As already posted, distortion is the biggest issue, and will necessitate machining work.

IMHO, I’d get it laser welded.
 
Last edited:
If it were me, I would machine it out on my CNC mill, leaving the bolt holes in place, machine a new centre section the same shape, and TIG weld it in place, then line bore it in line with the timing side as a guide to keep straight and in alignment.
How did you support the case when trying to press the bearing in, if you support it correctly and a bit of heat, this shouldn't have happened?
If supported correctly and the bore is correct for the bearing the bearing boss would have been in compression not tensile stress as in the photos, in compressive strength it is a lot stronger than tensile.

Hope all ends well for you.
Burgs
 
You must log in or register to reply here.
Back
Top