Author Topic: Technical appreciation  (Read 1345 times)

Offline K2-K6

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Technical appreciation
« on: March 28, 2023, 12:00:30 PM »
For those interested in deeper examination of mechanical parts within some engines

https://youtu.be/F39gjxxGHfY

Warning, for the impatient it may not be for you  :) slow delivery but a very lucid look at this element of engineering from Brian Garvey.


Offline Laverdaroo

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Re: Technical appreciation
« Reply #1 on: March 28, 2023, 01:19:03 PM »
Nice one, that was really interesting, albeit a tad long winded bless him. I'm not surprised F1 motors are so expensive, just looking at the machining of that sprung gear on the end of the cam. Bit like an over engineered cush drive really but what a piece of design and execution, brilliant.

I can see that he must be a good engineer, he must be able to get those hands into the smallest of places, have you seen how much his thumb bends the wrong way when he's holding that sprocket assembly :o..............old bannana thumbs! ;D
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Offline K2-K6

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Re: Technical appreciation
« Reply #2 on: March 28, 2023, 01:27:58 PM »
 ;D I thought the same about thumb dexterity Roo.

Yes, needs to bring the speed up a little hence my warning for the impatient. Very clear in his view and explanation though.

Offline Johnwebley

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Re: Technical appreciation
« Reply #3 on: March 28, 2023, 01:39:00 PM »
If you read Keith Duckworth auto biography he explains how they had problems with the DFV,



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Offline Laverdaroo

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Re: Technical appreciation
« Reply #4 on: March 28, 2023, 01:43:02 PM »
;D I thought the same about thumb dexterity Roo.

Yes, needs to bring the speed up a little hence my warning for the impatient. Very clear in his view and explanation though.

I kinda got it straight away and having a visual aid meant that it was really clear. I was always pretty good at physics and maths, couldn't really see why he said folk dont understand that particular theory really, you can see the extrra travel on the crank to allow room for the swing and rotation of the con rod. Anyway, spot on, cheers 8) ;)
Mornings are the invention of the devil!

1977 CB550F (current money pit!!)
2002 VFR800 VTEC (The Beloved)
1977 CB400F (the last money pit!)
1998 Ducati 748\853 conversion(sold :()
1980 ish CB750KZ in a billion bits (need to get rid, anybody want one?))

Offline Laverdaroo

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Re: Technical appreciation
« Reply #5 on: March 29, 2023, 10:32:02 AM »
Now I’m stuffed, was watching him doing pneumatic-valve operation and theory last night. He’s proper clued up that chap isn’t he. Long winded but clued up.


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Mornings are the invention of the devil!

1977 CB550F (current money pit!!)
2002 VFR800 VTEC (The Beloved)
1977 CB400F (the last money pit!)
1998 Ducati 748\853 conversion(sold :()
1980 ish CB750KZ in a billion bits (need to get rid, anybody want one?))

Offline K2-K6

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Re: Technical appreciation
« Reply #6 on: March 29, 2023, 12:40:28 PM »
I've got more to watch when I get time.

Something else interesting https://www.f1technical.net/news/20316 overview of how they burn really really lean fuel mix currently.

But.......https://global.honda/heritage/episodes/1972introducingthecvcc.html this principle was developed by Honda to production in the 70s just how far ahead were they  :) and interesting that they have come to the fore in F1 terms recently.

Offline Multiman

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Re: Technical appreciation
« Reply #7 on: March 29, 2023, 10:53:21 PM »
Well I have to say I didn't get it from the slider crank rig he had built.
It appeared to me that every time he turned the crank to 90 deg it looked like he turned it too far, hence I was unconvinced.
I was sure he was right and that it was simply a slight camera angle offset that made it look suspect, so being a bit anal I drew it out myself which made it blindingly obvious.
10cm con rod and 3cm crank.
Got to do the maths now just to see if I still have half a brain cell left.

Worryingly I did an engineering degree and the first year was common across all disciplines.
I can remember doing vector diagrams to dynamically balance several different weights about a rotating shaft so I may well have done all this stuff and forgotten all of it. It was 1976? ish.
If you mention this year, Roo will gleefully tell you he was aged 1. Don't ask how I know.

However what an amazing bit of engineering and mind boggling all the torsional tweaks they have to do to the camshaft to get it to work as well as they can.

Offline Laverdaroo

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Re: Technical appreciation
« Reply #8 on: March 30, 2023, 12:13:07 AM »
I was two ;D ;D ;D
Mornings are the invention of the devil!

1977 CB550F (current money pit!!)
2002 VFR800 VTEC (The Beloved)
1977 CB400F (the last money pit!)
1998 Ducati 748\853 conversion(sold :()
1980 ish CB750KZ in a billion bits (need to get rid, anybody want one?))

Offline Oddjob

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Re: Technical appreciation
« Reply #9 on: March 30, 2023, 03:57:58 AM »
Damn Roo, you ain't aged well man, I thought you were a pensioner you're so wrinkly  ;D ;D ;D ;D ;D

In fact I honestly thought someone had put a nose on a scrotum.
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Offline Laverdaroo

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Re: Technical appreciation
« Reply #10 on: March 30, 2023, 10:14:38 AM »
 ;D ;D
I have lovely skin, how very dare you, it's like antique, horse leather ;D ;D ;D
Anyway, get stuffed, at least I'm not a 'left footer' from the wrong side of the hill 8)

And it's a BAP, not a balm! ;) :D
Mornings are the invention of the devil!

1977 CB550F (current money pit!!)
2002 VFR800 VTEC (The Beloved)
1977 CB400F (the last money pit!)
1998 Ducati 748\853 conversion(sold :()
1980 ish CB750KZ in a billion bits (need to get rid, anybody want one?))

Offline Oddjob

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Re: Technical appreciation
« Reply #11 on: March 30, 2023, 01:56:42 PM »
The name changes as you go around the country, spotted that being an HGV driver, Bap in Yorkshire, Stottie in the North East, a Roll in the Midlands, Balm in the North West, teacake in the south, a TEACAKE FFS, a teacake has bloody currants in it.
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Offline Laverdaroo

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Re: Technical appreciation
« Reply #12 on: March 30, 2023, 02:01:57 PM »
Correct, as in  ’a toasted tea cake’………… mmmm, toasted tea cake, a long distant memorybut it’s a bap really


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Mornings are the invention of the devil!

1977 CB550F (current money pit!!)
2002 VFR800 VTEC (The Beloved)
1977 CB400F (the last money pit!)
1998 Ducati 748\853 conversion(sold :()
1980 ish CB750KZ in a billion bits (need to get rid, anybody want one?))

Offline Oddjob

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Re: Technical appreciation
« Reply #13 on: March 30, 2023, 02:05:31 PM »
Do they not do currant tea cakes in Bristol?
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Offline Laverdaroo

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Re: Technical appreciation
« Reply #14 on: March 30, 2023, 02:12:10 PM »
Yes, just can’t chew much more than soaked biccies pre dunked in me coffee, yoghurt and bloody soup at the min. Got another bout of hell on Tuesday. Yay
I better not look like bloody Ken Dodd after
All this, I’ll be gutted

Saying that the hairs not far off today………..fishing mode, out of bed straight out the door and on the road. Just stopped to brew up in the back of the van.

Just like to say thanks to my current sponsor , The Long Haired General, who filled the tank up for me yesterday so I could bolt off today………….what a gal


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Mornings are the invention of the devil!

1977 CB550F (current money pit!!)
2002 VFR800 VTEC (The Beloved)
1977 CB400F (the last money pit!)
1998 Ducati 748\853 conversion(sold :()
1980 ish CB750KZ in a billion bits (need to get rid, anybody want one?))

 

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