Topica Loopframe_Guzzi Archive


Subject: Re: Disk front ends

Author: k obrien

Date: Jan 29, 2001, 8:00 AM

Post ID: 1705162967


David Washburn wrote:
 
/=-=-=-=-Click Here & Support Our Sponsor-=-=-=-=-=-=-=-=-=
Let Lorie, the Frugal Home Decorator help you Make Your Home
a New Home with Decorating Tips, advice, and low-priced
wallpaper starting at only $6.89 per roll- wholesale prices!
http://click.topica.com/aaabf8b1dfltb1mTaaa/WallPaper
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=/

I just finished assembling my front end and ran into a little problem. I
got the twin disk spacer from Moto Int. so I could run my single disk on
the left side instead of the right. It put the disk too close to center of
the wheel and I could not get the caliper on without shimming the whole
wheel left. I considered getting a custom shim made but Brian writes:

"Before disassembly, I measured the offset of the hub on
each side of the wheel (with respect to the outside edge of the rim) and
found that the right side is offset 6.3 mm (+/- 0.1 mm), while the left
side of the rim is offset 7.6 mm (+/- 0.2 mm). I thought that this was
peculiar (that the right side of the hub is on average 1.3 mm closer to
the outside edge of the rim than the other side) in view of the fact
that installing a disk on the LHS is a common option."

Aha, so if this is the correct offset then there is a good reason why my
disk is a little off. If I mixed up the bearing carriers while installing
new bearings it would be off 1.3 mm by Brian's calculations. I guess I
have to pull the wheel again, switch the carriers and remeasure.

For those who have Guzziology there is a nice chart that shows fork tube
dimensions and spacing. Here is a quick quiz:

(1) What big block Guzzi has the narrowest spacing from tube center to
tube center?

(2) What big block has the widest?

(3) What do they have in common?

Answers: (1) V7 Sport; (2) Eldorado/Ambassador/V700; (3) They all have
35 mm. tubes
(K.O. I expect you did well on the quiz?)

The Lemans, T, T-3 et. al. share dimensions and fall in between the two
extremes.

The disk brake Eldo is an odd duck that shares parts with the T in some
cases. Other parts are unique. Proceed with caution and take measurements
from the correct parts as the dimensions of T-3 bearing carriers are not
the same as Disk Eldos. If you can, read the discussion of bearing
carriers in Guzziology. It makes interesting reading for those of us
restoring disk Eldos.

David in NYC

--- Sponsor's Message --------------------------------------
Tech News...With Attitude!
Get the top stories in your in-box -- commentary included!
http://click.topica.com/aaaa4xb1dfltb1mTaac/technewsdaily
------------------------------------------------------------

____________________________________________________________
T O P I C A -- Learn More. Surf Less.
Newsletters, Tips and Discussions on Topics You Choose.
http://www.topica.com/partner/tag01
David>were you refering to the dics or drum brake v7sport???In reality I
just peaked at your answers!!!When I crashed my sport and then redid the
front end I ordered a brace which was ?85mm and did not fit.It was
supposed to be ?75mm.I also had to change the regular braces and the
axle as they are different on disc and drum models.I also changed the
single disc on my LAPD to a twin.I used a spacer made by Bob Nolan in
Washington.He was the only guy who had it.Its a perfect fit.I hope you
stick with it and get the Jackal set up the way you want.I just picked
up another v7sport last week.Its a 73 burgandy/black with 850cc motor
and original Reno Leoni racebike front wheel.The wiring has been cobbled
together and the bike has sit for 20 years in my friends basement but is
all together and the motor is GUARANTEED!!!!!!Looks awesome-and the
sidecover decals{original unaltered}are red NOT burgandy.Looks like Mr
Perfect is wrong after all!!!..........KO

Entire thread: