PEEK as a bearing in flame eater/stirling engine?

[machineshed]

I'm making a couple of engines and can't fine enough ball bearings, But i have got a load of peek!

Has anyone tried PEEK as bearing on a striling engine or a poppin???

Thanks Jim

[b.lindsey]

Jim, I have never tried it but most stirlings and flame eaters require ball bearings or else the friction becomes too much for the power of the engine to overcome.

Bill

[Stuart]

Not used it as a bearing but I have made piston valves from it for live steam locomotive , only the valve bit like a polo mint on each end

But it's very expensive about £60 for 25mm dia by 300 mm
So I envy a sock of lots

Stuart

Sorry Stan I meant stock , dyslexia problems

[gldavison]

What is PEEK?

[b.lindsey]

Maybe this will help.

http://en.wikipedia.org/wiki/PEEK

Bill

[fumopuc]

May by some additional information are shown here.
http://www.ensinger-inc.com/products.cfm?page=product&product=tecapeek

[sshire]

What is a ""sock of lots?" I was sure that the time spent on this forum, along with my "English to English Translation Dictionary" had gotten me to the point where I knew what was being said. I'm still shaky on the "Oz to English" however but that's another story.

[Arbalest]

Peek wouldn't be my first choice for bearings. Not cheap but I bought some Ertalyte TX rod to make the track and bolt retainer inserts on my target crossbow. Excellent stuff, machines like Acetal but very slippy!


http://www.quadrantplastics.com/fileadmin/quadrant/documents/QEPP/EU/Product_Data_Sheets_PDF/GEP/Ertalyte_TX_PDS_E_25012011.pdf

[machineshed]

Thank you for the replies.

I'm going to go ahead and try the PEEK, if it doesn't work, I'll have to get some bearings!

Cheers Jim

[b.lindsey]

Jim, if it works then we will all have learned something. Please keep us posted on if and how it works. As the saying goes..."nothing ventured, nothing gained."

Bill

[Arbalest]

For what it's worth I even washed out the oil on the bearings for my flame eater to reduce friction to a minimum. The addition of some graphite powder may help if you're going to go solid with some Peek.

[kellswaterri]

Hi folks,....re.   Peek.  I sent just on Thursday last,for some info, on Peek rod  to make some bearings, hopefully I might be able to obtain a small sample  Gratis.

[kellswaterri]

Hi folks...those Very Nice people at  V......  must not have wanted me to have a Peek at their PEEK...as there was no reply to my email
for information + a sixty metre sample   Sorry ,finger slipped... 6 MM  ...I hope to hear from then ...soon.

[Ian S C]

I use carbon impregnated Teflon for the gland bush of the displacer on some of my Stirling Engines,  It's good, but try not too get oil on it.  You could make some cast iron bushes, with a polished shaft the friction is not too much greater than ball bearings.
                                                Ian S C

[Stuart]

its not worth trying to scrouge a bit of peek although I do not think its the best stuf for your job
http://www.directplasticsonline.co.uk/PeekRod/6mm/

just over £3

Stuart