Forwarded from rec.audio.tubes. -- Andre Jute
Patrick Turner wrote:
> fiultra1@[EMAIL PROTECTED]
wrote:
> >
> > On Mar 27, 5:38 pm, fiult...@[EMAIL PROTECTED]
wrote:
> > > Of course they're Brook amplifiers, not Brooks. -- Andre "Mr
> > > Precision" Jute
> >
> > Cause I wouldn't want to be thought of as a calloused cyclist (like
> > Patrick) sitting on a leather Brooks saddle for real men who know how
> > to manage pain. -- Andre "The Hedonist" Jute
>
> The Brooks saddle is a very decent British invention and a google search
> will reveal some details.
> I have them on the two bikes of 3 that I ride most of the time.
>
> Their principle is that you sit upon a peice of stretched leather,
> and this has wonderful properties of damping vibrations from the road,
> and providing a sup****t to pelvis bones which contours under bones
> immediately.
> One can ****ft around a bit on a Brooks, and it always "fits".
> I had a procession of plastic and foam crap saddles and found they
> caused
> lots of saddle sores and discomfort.
> The Brooks changed all that, and I could ride 300km in a day
> and not get off with a sore arse, or have one while on.
>
> They do suffer from poor build quality.
>
> Each of the two I have had for 22 years and probably done
> 100,000 km upon have eventually broken the 5/16 inch adjustable
> leather tensioning bolt under saddle nose.
> I have had to replace these with 10mm mild steel bolt and nut.
> It's a mod that takes me 30 minutes as a skilled and well tooled up
> tradesman.
> Also the rivets pull loose in the tensioned leather, so I have replaced
> these
> with 1/4 inch gutter bolts with filed down screw slot ridges to avoid
> gradual ripping of riding sorts.
>
> So once you get decent leather fastening into service, and decent
> tension bolting,
> they are the best saddle by far.
> So far this year I have averaged 200km+ per week.
>
> I did a fast 51km in 1:34 two weeks ago to see if I could get near my
> "age standard" for the 40km or 25 mile time trial.
> Apparently I did, and it seems I am not ageing as fast as the rest of
> the
> riding population. I could never get near the age standard
> when I was in my early 40s, probably because so many
> very good riders are still strong and still riding at 40, and their
> fastest times determine the "age standard".
> But I can now get better than the age standard at age 61.
> Most of the guys who were so good until about 45 must have dropped right
> out.
> The course I chose is a multilane highway running north of Canberra,
> the Federal Highway, between Watson and Lake George. There is a fine
> wide
> "breakdown lane" away from the traffic, and no traffic lights or
> roundabouts
> and very few places where any traffic enters or leaves, so yone can go
> like
> greased lightning, and not worry about being run over.
> I chose early sunday morning with little traffic and very light wind,
> temp about 20C.
> The course has approx 400metres of rise in uphills going out,
> and 300metres of rise returning. Maximum gradients are
> less than 6%, with an average in mid hill of 4.5%.
> I dunno how much faster I'd have gone if it was flat
> which favours good times.
> But I was comfortable, and could keep pressure on myself to
> pedal all around the circle, and down hill as well.
> I was sore in the knees until a day after, but not in the arse.
>
> And my ancient custom made steel framed bike with 753R tubing feels
> sublime.
> I do have new Mavic D profile rims and 32 spokes per wheel and
> very ordinary 25mm Vitoria clincher tyres.
> I used to have much lighter Mavic wheels and tubular tyres glued on
> and flattened blade spokes to do time trials 20 years ago.
> But it appears they must have done me little good if what I do now is
> any guide.
> I have standard race bars, with no "triathlon" bars for the time
> trialing
> to get arms and elbows within the smallest frontal area.
> I'm using ordinary lycra shorts and a cotton top with junk in the rear
> pockets.
> I can't afford a special skin suit and special helmet; can't afford any
> ****in
> special anything, except I do find time to ride, and ride fairly hard
> whenever I go out.
> I'm also using ancient shoes and pedal plates with leather foot straps
> with toe clips.
> I have installed 8 speed ****mano SORA index gearing, a change from the
> old
> down tube lever ****fting I found I really liked.
> The bike with its heavy Brooks saddle is maybe 11.5 Kg with a watter
> bottle and pump,
> and about 2Kg+ more than the carbon fibre bikes which are now
> mainstream.
> So, I'm pu****ng more weight than I need to but in fact it doesn't matter
> much,
> all the guys my age have real trouble keeping up with me.
> A few of the guys in a "social" group I go out with sometimes
> can get up hills slightly quicker than me, but they suffer on the down
> hill and flats
> where my weight assists or does not matter.
> And I keep passing guys of 25 with all the latest crap they've spent
> several thousand bucks upon.
> But they got no Brooks saddle.
> And BTW, having the inside of your lycra shorts lined with real fine
> leather
> also is a big plus; its the best; but now largely unobtainable cheaply,
> and fortunately I have found a local shorts maker who
> uses some synthetic junk which allows 130km at least without chafing.
>
> Patrick Turner.
The rest is about vintage Brook tube amps; I leave it for those
interested. -- AJ
> > > On Mar 22, 2:22 am, Andre Jute <fiul...@[EMAIL PROTECTED]
> wrote:
> > >
> > > > Patrick Turner wrote:
> > > > > Lincoln-Walsh made nice PP amps with CFB AND an IST driver
tranny.
> > > > > Back in maybe 1955. Its been done before.
> > > > > But I only saw a LW schematic once, and have not seen an
electronic
> > > > > copy,
> > > > > so LW might have gone broke or stopped production long ago
> > > > > after not making very much.
> > >
> > > > > Anyone have a copy of the Lincoln-Walsh amps?
> > >
> > > > I don't know about Lincoln Walsh amps, but those Brooks Amps
people
> > > > are always raving about were designed by Lincoln Walsh. I can let
you
> > > > have circuits and some specs for:
> > >
> > > > 1. Brooks 12A 10W
> > >
> > > > 2. Brooks 10C 30W
> > >
> > > > 3. "HIGH QUALITY" class A1 30W design by Lincoln Walsh in
Electronics,
> > > > July 1939 -- this is the advance guard of the famous Brooks Amps.
> > >
> > > > Let me know.
> > >
> > > > Andre Jute
> > > > Visit Jute on Amps athttp://members.lycos.co.uk/fiultra/
> > > > "wonderfully well written and reasoned information
> > > > for the tube audio constructor"
> > > > John Broskie TubeCAD & GlassWare
> > > > "an unbelievably comprehensive web site
> > > > containing vital gems of wisdom"
> > > > Stuart Perry Hi-Fi News & Record Review
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