New Flex Shaft

[TerryT]

I purchased a flex shaft the other day. It was delivered about 6pm last night (Friday). I started to install it today, Saturday 2/25. It did not have the spring in it. Just the flex and the housing. Is this a new thing or was it accidentally left out on my order? Since this is Saturday I can't get ahold of LHR to see if it is safe to use this way, I'm guessing it isn't. It has been about 10 years since I had to replace one.

Thanks for any advise.

Terry

[bergerud]

I believe it is supposed to have the silencing spring as part of the assembly (it still says so in the website description). I have heard of people running without it but I am not sure it would be a good idea.

[fwharris]

They no longer use the spring in the flex core. I found this out back before Christmas when I sold a new machine. The guy had bought his second machine so when he found that there was not a spring he contacted me and CarveWright. The feedback we got was they decided it was no longer needed.

[bergerud]

They no longer use the spring in the flex core. I found this out back before Christmas when I sold a new machine. The guy had bought his second machine so when he found that there was not a spring he contacted me and CarveWright. The feedback we got was they decided it was no longer needed.

I find that disturbing on a few levels. The web description should at least be changed so others do not think parts are missing.

[fwharris]

I find that disturbing on a few levels. The web description should at least be changed so others do not think parts are missing.

Yes and also maybe a FYI announcement to all.

[normrichards]

Hopefully someone from LHR can get on and tell us more about the differences between the old and new flex shafts and whether this will have any effect on noise and more importantly on flex shafts burning up.

[TerryT]

Is Any gain over self destructive vibration made by the CT Chuck going to be lost as well?

[myshop1044]

That brings up a possibal good timely notice on major upgrades to the machines, I had to question why the idoler pully on the "y" attachment had no teeth, I do understand the reason for the change and it does seem to be working fine.
This would keep everyone informed

[Smoken D]

So, do we need to pull out the spring and throw it away? Is the new flex shaft a different size diameter than the old?

[bergerud]

Is the new flex shaft a different size diameter than the old?

That was going to be one of my questions. I bet not. I always thought that heat transfer to the sheath would have been better without the spring. This, however, may not be a benefit if the core has rooom in the sheath to twist and distort.

[TerryT]

So, do we need to pull out the spring and throw it away? Is the new flex shaft a different size diameter than the old?

No, Diameter seems the same I put my old spring back in the new flex. I ran it for about 15 seconds the way it arrived and it reminded me of my 62 impala convert, when the center carrier u-joint holder broke on the driveline. A lot of thumping, grinding and vibration. After about 15 seconds I took my old spring an put it in. Vibration seemed reduced and the crunching and grinding stopped. To be fair I did have a couple of other machines running and was wearing hearing protection so the noise might have been something else, or even imagined I guess.