mallory 1000 old bikes and even older riders

[roger]

Re: Post from arsey30 Mon Sep 23, 2013 8:12 am:-

“Do both the long mounts flex together but the engine remain steady?
If so, they must stretch and compress or the engine would have to twist.”

The engine is a stressed member of the chassis/engine combination (Larry has already extolled the rigidity virtues of a V4) so you are correct, any ‘flex’ in the long (engine) mounts would, in fact, have to be stretch and rebound movements (i.e., the mounts being subject to linear elastic deformation), rendering the engine a ‘nodding donkey… and the bike as a whole a complete donkey’.

And to subsequent post Mon Sep 23, 2013 9:22 am:

As shown, the frame reinforcement kit (that is reinforcement Larry, or as you say, strengthening) was found necessary for racing (for more precise, so predictable) handling after the ‘perfectly designed at the drawing board’ standard chassis for this race homologation special was found wanting. So the chassis kit is a retrospective addition; or, if you’d want to be scathing, a bodge. But, the thing that matters most, for the truth to be told, is the recognition that the RC45, post design and production, was very improvable. But if I were a ‘marketing man’ I’d obviously claim some grand, entirely premeditated, scheme had been in operation all along!

As for the Chassis kit, part number 06501-NL5-000, it consists of two major positionally applied elements.

1: The headstock strengthening/bracing part, to mitigate against torsional deformation (as already explained)

2: The rear upper engine (over gearbox) mount, which though appearing somewhat minor is actually very important in ‘de-flexing’ the chassis, close as this point is to the swing-arm pivot. That is, the standard set-up, which utilises a spacer lacks a degree of rigidity and so compromises engine/chassis mounting stability as the engine is a key stressed member of the system. In short, the swing arm is a hight torque laterally fluctuating lever which necessitates high strength at or about its fulcrum point to avoid the possibility of unpredictable rear wheel steering.

Now to Larry’s ‘alchemical theories and pronouncements’:

Sun Sep 22, 2013 10:41 pm

“True... long arms allow the headstock to flex ever so slightly and no
the long arms are not primarily designed to deal with cylinder head
stress... remember Honda dropped the I4 in favor of the V4 in Gp
racing because it don't vibrate as much and the V angle makes for a
rigid cube block design which fights against internal friction...”

Note, “the long arms allow the headstock to flex ever so slightly”. And also note the ‘stealthy’ introduction of more of Larry’s diversionary ‘bandwagon leaps’.

And so we now 'know', from Larry, that the headstock strengthening/bracing kit is applied to race bikes so as to allow flex; which I shall henceforth consider, as with all such nonsense, to be a special branch of applied (pseudo)science, which I shall call…erm… Larryficology.

Mon Sep 23, 2013 10:40 pm

“You're welcome Dave... Long arms flex together as the engine remains
steady...

Hmmm… The engine mounts flex together (but the engine remains steady!..Incongruous again!!). Overall, the RC45 is a ‘nodding donkey’ after all then.

Larry, if you weren’t so hilariously transparent (and predictable) you’d be dangerous.

My carefully considered (and sadly arrived at) judgement is that you’ve NPD Larry; look it up. Though it may turn out to be all Greek to you Larry, just hold the belief that you can fight against the urge, and prevail, if you try!

Regards,

Roger.

P.S.: Yes Larry, I know you like reading my posts (as you’ve assumed several of my writing/punctuational ‘quirks’)… I hope others like reading my posts too – but I mostly hope my posts provide some useful interest - in addition to entertainment value… But I am conscious of the fact that I do post (and respond) quite a bit, maybe percentage wise, relative to the membership, too much; so come on you guys, at least ‘dip a toe or two in’... And don't be put off by my and Larry's 'battles of wits', every cat deserves to toy with a mouse at least once, but which is the cat and which is the mouse?

Renewed regards.

[Busy Little Shop]

P.S.: Yes Larry, I know you like reading my posts (as you’ve assumed several of my writing/punctuational ‘quirks’)… I hope others like reading my posts too – but I mostly hope my posts provide some useful interest - in addition to entertainment value… But I am conscious of the fact that I do post (and respond) quite a bit, maybe percentage wise, relative to the membership, too much; so come on you guys, at least ‘dip a toe or two in’... And don't be put off by my and Larry's 'battles of wits', every cat deserves to toy with a mouse at least once, but which is the cat and which is the mouse?

Renewed regards.

Well Roger, every bloke from Biggleswade to Scunthorpe has been
fluttering the dovecoats about "tune flex" throwing a wobbly. Before this,
everything seemed quids-in and sound as a pound, but now you're
over-egged the pudding, gone hairy at the heel, and turned a bloody
stonker into a sod-all.

[roger]

Clearly, I'm the cat.

[Dave45]

Clearly, I'm the cat.

And im the dog, so watch it!

[arsey30]

May be of interest.

[roger]

@aarsey30.

Very nice. There was some info on a true to type RVF rep build on the intetnet. If I can find the link I'll post it.

@Dave 45.

Meow!

And will you stop bolting through the garden gate to chase every RC30/45 that passes by.

[roger]

Good grief arsey30, after all these years I though it was the sound of my old and aching bones doing something like a skeleton in a biscuit tin… and now, after so much medication, you tell me it was my ’45 all along!

[Jamiec_c]

......and how sweet that clatter is

[roger]

Sorry guys, couldn’t find the link to the RVF750 replica, though from recollection I’m sure g0rd0n_w is spot on (the builder must have been an absolute wiz.).

@You.......... Larry………. That, you’ve written/shown, is (comprehensive, yet to the point) interesting, good, and useful info – all your own work and so it’s to be properly appreciated for being that… thus you have my thanks for it…

Oh, and btw, were you trying to say to me…’see you at Royal Ascot old boy, what, what – and that I should be sure to instruct Herbert the butler to check that the champers is vintage, the caviar Beluga, and all crusts are all neatly removed from the cucumber sandwiches’?…. Or was it, any old iron, any old iron, any any any, old iron…?!

Regards,

Roger.