Topica Loopframe_Guzzi Archive
 

Subject: RE: On the subject of forks (again)

Author: Charlie Mullendore

Date: Mar 23, 2005, 3:41 PM

Post ID: 1718590047


Hi Ray,
I used 1 1/2" PVC pipe plugs instead of the pipe. The local Lowe's
didn't want to sell me any short pieces and the plugs were a little bit
beefier (thicker wall). Of course I had to chuck them up in the lathe
and cut the closed end off - I made mine 1" long. Hope to try the forks
(along with the rest of the bike) out soon! Cheers,

Bruce Giller wrote:
 
Ray,
I think that with all pipe dimensions, the number refers to the ID.
Just go to Home Depot and ask for 1.5" PVC(white)/ABS(black) plumbing
pipe.
They probably have lots of cutoffs available for very little, if not
free.

Bruce

And tubing dimensions refers to the OD

-----Original Message-----
From: Ray Hale [mailto:ray.-@sfcc.edu]
Sent: Wednesday, March 23, 2005 2:02 PM
To: Loopfram-@topica.com
Subject: RE: On the subject of forks (again)

Thanks Bruce,
Sounds like maybe all the old Eldos are clunky in the front end. I'll
play my best cards and try several combos until I feel it's as good as
it can get. It's not that difficult to take apart. Just a matter of
determination.
Is the PVC 1.5" diameter? If so, what is the height?
Ray
pax sine tedio
73 Eldo "19"


Bruce Giller wrote:
 
Ray,
The ABS/PVC spacer (standard 1.5" plumbing pipe) went at top of the
springs; inserted just before pulling the tube up into the fork shrouds.

I
didn't have to alter the spacers at all. In fact, I found the spacers
in
there already when I took the front end apart for some necessary R&R.

Even with the new springs, I found the forks would "clunk" on deep
pot holes (I think both on the extend and rebound), mostly when riding
two-up (maybe around 280 lbs total). I tried 10 wt. fork oil, then 15
wt.
then 30 wt. On advice of a fellow list member, I went to 50 wt. auto
oil
(Havoline racing oil, to be exact). The advice went on to recommend
using
70 wt. auto oil if in the hot south (Texas, Louisiana, etc). I live in
Silver Spring, Md (just north of the Wash. DC) so I stuck with the 50
wt.

This seemed to prevent any clunking on most rapid and abrupt terrain
changes on the front tire; the ride seemed to be smoother as well. But
it
will clunk if the terrain changes are extreme enough.

Bruce

'72 Eldo



-----Original Message-----
From: Ray Hale [mailto:ray.-@sfcc.edu]
Sent: Wednesday, March 23, 2005 12:00 PM
To: Loopfram-@topica.com
Subject: RE: On the subject of forks (again)

Bruce,
did you place your pvc on top or bottom and did you have to alter them
for castellated nut or any other reason? Do you remember the diameter of


the tubing? Also, do you use 50wt motor oil or did you find a 50wt fork
oil? One more...you say this stiffens the ride but do you notice any
negative result, like on rebound?
Thanks
Ray
pax sine tedio
73 Eldo "19"


Bruce Giller wrote:
 
Ray,
I got my Wirth progressive springs from Moto International and they
recommended a 1.5" ABS/PVC pre-load spacer. I subsequently put in the
spacers therefore I've no idea how they work without them. But I do use
50wt oil as fork oil to stiffen them up a bit.

Bruce

'72 Eldo



Charlie
http://www.loopframeguzzi.com/

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