guzziriders.org - moto guzzi forum Homepage
Forum Home Forum Home > Technical > Technical services
  New Posts New Posts RSS Feed - V50 Rear Shock Length
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

V50 Rear Shock Length

 Post Reply Post Reply
Author
Message
Ian T View Drop Down
Senior Member
Senior Member


Joined: 24 Oct 2019
Location: East Yorkshire
Status: Offline
Points: 201
Post Options Post Options   Thanks (0) Thanks(0)   Quote Ian T Quote  Post ReplyReply Direct Link To This Post Topic: V50 Rear Shock Length
    Posted: 14 Nov 2019 at 10:19
Hi everyone 

Trying to sort a pair of rear shock and not sure if the ones I have are original, probably not. 

Does anyone know if the standard length was 310mm or 330mm, I seem to be getting conflicting information on Mr Google. 

Cheers

Ian
Back to Top
Richard Hyatt View Drop Down
Senior Member
Senior Member


Joined: 14 Oct 2019
Location: Dorset
Status: Offline
Points: 187
Post Options Post Options   Thanks (0) Thanks(0)   Quote Richard Hyatt Quote  Post ReplyReply Direct Link To This Post Posted: 14 Nov 2019 at 15:00
Well,
Having just gone through this saga myself!
I have a 1980 v50 mk2 and the original owners manual and workshop manual shows I think 305mm but when I approached hagon they were selling 310mm,  so I settled for that and bought them 
With a 14mm eye bush at either end.

But if you look at the IKON site who do the old Koni s , then the v50 mk2 custom are different lengths again ,
Have a look at their web page and you can see the different length for the different v50s
Back to Top
Ian T View Drop Down
Senior Member
Senior Member


Joined: 24 Oct 2019
Location: East Yorkshire
Status: Offline
Points: 201
Post Options Post Options   Thanks (0) Thanks(0)   Quote Ian T Quote  Post ReplyReply Direct Link To This Post Posted: 14 Nov 2019 at 15:20
Cheers

Yup done all that, mines a 1980 ii as well.

I've found between 310 and 330 centre to centre, but I have my eye on some rather snazzy ones but they are 330

Hey ho don't suppose it would make much difference in the long run 

Thanks

Ian
Back to Top
Richard Hyatt View Drop Down
Senior Member
Senior Member


Joined: 14 Oct 2019
Location: Dorset
Status: Offline
Points: 187
Post Options Post Options   Thanks (0) Thanks(0)   Quote Richard Hyatt Quote  Post ReplyReply Direct Link To This Post Posted: 14 Nov 2019 at 15:40
The reason I changed mine from the longer joins that were on the bike was that i couldn't get it to stand upright on the centre stand securely.

The longer shocks pushed the swinging arm down until it touched the pillion frame tubes ! But equally, the rear wheel was so low it rubbed on the ground making the bike insecure on the stand.
The stand pivots were not worn or oval but good condition.
Back to Top
c13pep View Drop Down
Senior Member
Senior Member
Avatar

Joined: 31 Aug 2017
Location: Doncaster
Status: Offline
Points: 1055
Post Options Post Options   Thanks (0) Thanks(0)   Quote c13pep Quote  Post ReplyReply Direct Link To This Post Posted: 14 Nov 2019 at 16:55
The V50s have a shock absorber length of 305mm centre to centre the V50C (custom) has the 330mm because the angle is different. Going any longer than 305mm may upset the suspension but it also puts the UJ and drive shaft at a steeper angle which could result in extra wear. As mentioned the rear tyre may not leave the ground when the centre stand is down if the shocks are too long.

CHRIS
you can`t have any fun in a straight line

Monza
BMW R1150RT
1200 Sport
Back to Top
Ian T View Drop Down
Senior Member
Senior Member


Joined: 24 Oct 2019
Location: East Yorkshire
Status: Offline
Points: 201
Post Options Post Options   Thanks (0) Thanks(0)   Quote Ian T Quote  Post ReplyReply Direct Link To This Post Posted: 14 Nov 2019 at 17:46
Chris

Spot on thank you just saved me from bidding on a sexy pair of bitubos.  

They are 330 but they say will fit v50. 

Richard thanks for your help also. 

Cheers

Ian
Back to Top
Richard Hyatt View Drop Down
Senior Member
Senior Member


Joined: 14 Oct 2019
Location: Dorset
Status: Offline
Points: 187
Post Options Post Options   Thanks (0) Thanks(0)   Quote Richard Hyatt Quote  Post ReplyReply Direct Link To This Post Posted: 14 Nov 2019 at 19:19
My new hagons were £148
Back to Top
Ian T View Drop Down
Senior Member
Senior Member


Joined: 24 Oct 2019
Location: East Yorkshire
Status: Offline
Points: 201
Post Options Post Options   Thanks (0) Thanks(0)   Quote Ian T Quote  Post ReplyReply Direct Link To This Post Posted: 14 Nov 2019 at 19:30
That's a good price, got a Hagon on my K75s, I'll look them up

Cheers

Ian
Back to Top
drøn View Drop Down
Senior Member
Senior Member
Avatar

Joined: 28 Jun 2018
Location: Copenhagen
Status: Offline
Points: 127
Post Options Post Options   Thanks (0) Thanks(0)   Quote drøn Quote  Post ReplyReply Direct Link To This Post Posted: 10 Feb 2020 at 10:20
I've been thinking a bit too much about fitting slightly longer shocks lately. A oair of nice Koni shocks in 330 mm are for sale cheap locally so Started fiddle a bit with autocad to get an idea of the changes.

When on centre stand the angle of the UJ will change 3° from 6° to 9°. I don't know how much that would be when ridden. But I guess normal 310 will compress to an UJ angle of 0° and with the longer ones that'd be around the 3°...

Rear tyre would be 23 mm closer to the ground - only about 10 mm off the ground. Depending on tyre.

Free height under bike would increase with around 14 mm measured ca. under centre stand.
Seat height would increase with about the same.

Headtube angle would be 1° steeper.

The reference photo is not mine and not my bike...
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.03
Copyright ©2001-2019 Web Wiz Ltd.

This page was generated in 0.031 seconds.