Author Topic: Shock absorbers on a plunger!  (Read 335 times)

Online Greybeard

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Shock absorbers on a plunger!
« on: 16.12. 2019 09:49 »
What do you think about this?

Online muskrat

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Re: Shock absorbers on a plunger!
« Reply #1 on: 16.12. 2019 11:22 »
G'day GB.
That looks like handy work by a duTchman. The colours give it away!
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Online Greybeard

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Re: Shock absorbers on a plunger!
« Reply #2 on: 16.12. 2019 11:25 »
I think this was a B31

Online Rex

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Re: Shock absorbers on a plunger!
« Reply #3 on: 16.12. 2019 13:27 »
Seems a bit OTT. Plungers seem to struggle deflecting 1/2" or so let alone going into oscillation mode.. *smile*

Online Greybeard

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Re: Shock absorbers on a plunger!
« Reply #4 on: 16.12. 2019 15:30 »
Seems a bit OTT. Plungers seem to struggle deflecting 1/2" or so let alone going into oscillation mode.. *smile*
Mine frequently fully compress when I hit a pothole, with a hidious jolt to my back!

Online Rex

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Re: Shock absorbers on a plunger!
« Reply #5 on: 16.12. 2019 15:55 »
But then a shock absorber (damper) being added wouldn't necessarily stop that anyway. Are there internal springs inside the dampers I wonder?

Online Greybeard

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Re: Shock absorbers on a plunger!
« Reply #6 on: 16.12. 2019 16:10 »
But then a shock absorber (damper) being added wouldn't necessarily stop that anyway. Are there internal springs inside the dampers I wonder?
I feel that the hydraulic damping would be an improvement.

Online RDfella

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Re: Shock absorbers on a plunger!
« Reply #7 on: 16.12. 2019 17:46 »
"Mine frequently fully compress when I hit a pothole". Need to lose some weight, Neil (only joking, I'm 16st)   Doesn't take much of a road imperfection to hurt my back on my rigid M21 even though I keep tyre pressures as low as poss - 18psi for rear, 20 for front.
'49 B31, '49 M21, '53 DOT, '58 Flash, '00 Firestorm, Weslake sprint bike.

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Re: Shock absorbers on a plunger!
« Reply #8 on: 16.12. 2019 18:35 »
I think this was a B31
I see another pipe on the other side.
C'mon duTch, fess up.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Online Greybeard

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Re: Shock absorbers on a plunger!
« Reply #9 on: 16.12. 2019 19:39 »
I think this was a B31
I see another pipe on the other side.
C'mon duTch, fess up.
Cheers
Oh yes, I didn't see that.

Offline duTch

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Re: Shock absorbers on a plunger!
« Reply #10 on: 16.12. 2019 23:49 »
 
Quote
.....That looks like handy work by a duTchman. The colours give it away! .....
Quote
... C'mon duTch, fess up.
Cheers..

 Not this little blue duTck *smile* wrong shade of blue....
 I had springs made and took a while to calculate the spring rate I needed but they worked out ok and it only bottoms out on serious holes, off which there are *MANY*..... There's only~ 50mm maximum travel
 I think I asked if anyone has the standard spring dimensions but can't remember if I had success....

Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Online Triton Thrasher

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Re: Shock absorbers on a plunger!
« Reply #11 on: 17.12. 2019 07:42 »
Shouldn’t the pillar be greasier than that?

Online Greybeard

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Re: Shock absorbers on a plunger!
« Reply #12 on: 17.12. 2019 10:00 »
Shouldn’t the pillar be greasier than that?
Additional damping?

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Re: Shock absorbers on a plunger!
« Reply #13 on: 17.12. 2019 11:05 »
G'day duTch.
Sorry mate, I would have put money on it. Isn't your bike blue on one side and red on the other?
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Offline duTch

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Re: Shock absorbers on a plunger!
« Reply #14 on: 18.12. 2019 03:16 »

 
Quote
...Sorry mate, I would have put money on it. Isn't your bike blue on one side and red on the other?.....

 Weeeel yes,no,and yes.... But the frame is different shade of blue- mine much lighter....

 PS I'd feel guilty taking candy from a baby  *smile*

Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia