KC / KD shells - durability ?

[mr_timm]

How are people finding durability on shells?

I've been running KC and KD and am puzzling over getting cracking coming from the front body clip hole (both KC and kD shells have split from this point) and the rear point on the KC.

This is from say about 4hrs total of run time (say 40 batteries).

Haven't had cracking as an issue on the KF2 bodies so am wondering why it's happening.

Notes; was using body clips for first two sets of breaks. Ream the body clip hole with schumacher tool.
Switched to velcro having had two bodies break and am now puzzling over yet another break.

This is running at shrcc/epr/dms

[Al3xis007]

I have the KD and KC, both shells have cracks in the bend 10mm from the front clip hole

[DarkHawk]

Not had any trouble with KC body(been used for about 6 race meetings)

[StwBald]

Try slotting the front body mount hole to cope with any flex

[chris24jt]

not had any issue with either KD or KC and both have been well crash tested both have got duct tape on the insides to give a bit of strength. didnt have issues with kf/kf2 either and the shells feel the same thickness/springyness.

[mark christopher]

can also raise the alloy post with a 3mm spacer under it to prevent it being too stressed