Turns out that's the sound my new Brook's Flyer saddle makes. I think it does that to let you know it's working.

Use a bit of Brooks Proofide as a grease to lubricate the moving parts in the nose area.

Not ridden a horse have you ? there its the leather itself stretching, shifting ..

...

I've switched to the ThudBuster (suspension seatpost), in part because I was annoyed by the Flyer's squeals. In my experience, the Thudbuster (using elastomer) is both completely silent and much more effective.

you guys must both be fat, as mine doesnt do that ;-)

(ahh, the fine line of written interwebs humour that doesnt always translate well in print)

but seriously folks, my flyer doesnt and never has made a peep, yet one of my older B17's did it for a while and then stopped after I tried a bunch of stuff, but I'm still not sure which "stuff" was the one that worked....and yes, it was annoying.

mike, have you critically looked at all the junction points/bolts and done some lubing or whatever yet?

new sound or old?

+1 This worked for my B-67.

Thanks for the advice all, I hadn't looked closely enough at the saddle to realize there is a metal-on-metal pivot in the front. A little complimentary package of Proofhide came in the box, I think I still have it.

That Thudbuster seat post looks like a cool idea, I had a preconceived notion that all sprung seat posts were pogo stick devices.

Anyhoo..... gotta do something, the way it is now the only way I have to let sleeping dogs lie is to stand on the pedals and coast.

My own involvement with horses was more on the manure end, shoveling horse crap for a stable of fifty to seventy horses being my major employment in high school (the moment when Nixon announced his resignation over the radio I was double clutching an old Ford dump truck back into the woods to add to the manure pile). I wasn't batty about horses like my sisters, but I have thrown a leg across one quite a few times.

The creaking from my saddle is a metallic creak, about like the sound from the springs of an old camp bed at a biological field station in college when two of us college kids snuck off for a short period of time, but quieter than that.

Also, my regular B17 on my other bike has always been pretty quiet.

chuckle, ahh old memories---the double clutching I mean of course.

a friend recently remarked that in probably not that long in the future, a car with a manual will probably be like having a built in anti theft device, given how few young people nowadays learn to drive standards (let alone knowing how to drive a crashbox)

cant recall if I said, but do try a slight turn of the tightening thingee, along with perhaps a very small drop of chain lube on the threads area or other contact to contact areas. There arent that many options of where the sound can be coming from, Im sure you'll stop it, whether you know what one did it is another issue.

ps, not sure if you did it on purpose, but the throwing a leg over one and the field station escapades connection was rather cute.

..., just like downtube friction shifters.

I guess those coiled springs on the Flyer are redundant now. I thought that the Thudbuster obviates the need for a sprung saddle.....

Yes absolutely. I was replacing a defective Flyer. I am now riding on a Selle Anatomica. The Thudbuster makes a noticeable difference. (This being said, the SA is very comfortable on a regular post as well).

a year or more ago, on one of the GCN videos, the younger fellow tested an old Giro winning bike from the 80s I think, and he kept on shifting the front derailleur with his left hand, and the rear with his right--sheesh, youngins nowadays, how are you going to do a proper double shift if you cant finesse a multifinger right hand downshift to small ring whilst at the same time upshifting the rear a cog or two.....

I am becoming a "get off my lawn" sort of guy aren't I?
I accept this.