Tipseynipper,The cylinders I have received (all previous 4, and the last 12 which I could make a 2 sets of 4 from, 4 I sent back as un-usable due to defects in the cylinder wall or wrong length) are all steel lined.....the lining is only about 0.035" thick, so it doesn't make much difference to the weight.
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- That's quite a flaw in the wall of the cylinder (top photo). From a die bit that escaped the collet? Do you think it went through the steel liner?
- How long ago was your most recent purchase of these steel-lined cylinders from
- You've gotten good service since you bought and sorted them (to get some acceptable ones). Aside from weight, is there any advantage over regular steel cylinders? (Lower CHTs, etc?). One of the claimed advantages of Nikasil is their immunity to internal rust (a big issue for those that don't fly frequently). These steel liners wouldn"t be of much help there.
- Even with the differential thermal expansion of AL and steel and their bimetallic corrosion potential, you haven't had a problem related to that?
Thanks, sorry for the interrogation.