Motorbike Forums


Reply
Thread Tools Display Modes

Round 5, FOAK: 1982 Kawie KZ550 C3 LTD Restoration Options

 
 
Biker Dude
Guest
Posts: n/a
 
      11-06-2009, 07:18 PM
This is fun. I simply ask the technical questions and the rest of you
good souls log on and start swearing....

1st: I just used Slime and if you use the recommended amount then it
WILL NOT cause an imbalance.

2nd: The Slime treatment did not seal the leak this time and I will
replace the tire, look around inside, and replace the valve and report
back.

Ques: The proper tire is 100/90x19. I tend to buyer larger tires than
standard because it simply enlarges the diameter and offers more patch
to grip the road. The is for cars. Should I go one size larger?
110/90x19 or any other size? My intuition tells me to keep the
original size.....

What say ye, FOAK? <as I duck for cover>
 
Reply With Quote
 
 
 
 
little man upon the stair
Guest
Posts: n/a
 
      11-06-2009, 08:09 PM
On Nov 6, 12:18*pm, Biker Dude <jacobsenpa...@hotmail.com> wrote:
> This is fun. *I simply ask the technical questions and the rest of you
> good souls log on and start swearing....


That's because TOG is a self-important asshole. He's been that way
ever since the other chaps at the boarding school rode him rather
roughly...

> Ques: The proper tire is 100/90x19. *I tend to buyer larger tires than
> standard because it simply enlarges the diameter and offers more patch
> to grip the road. *The is for cars. *Should I go one size larger?
> 110/90x19 or any other size? *My intuition tells me to keep the
> original size.....


It's not a good idea to mess around with changing tire sizes for a
number of reasons.

1. If you mount a wider tire than standard on the rims you have, the
tire sidewalls may be closer together than is optimum for the wider
tire, so it will "crown" in the center, IOW, the cross-sectional
profile will be rounder than optimum, so you can't use all of the tire
when you lean over. This is especially noticeable with rear tires,
since you want to be able to lean over until you feel a distinct
*edge* of the tire at maximum lean angle. Front tires have a more
radial cross-sectional profile so you never feel the edge, you just
run off it and the front tire washes out, which is what you want it to
do.

2. If you install a larger diameter tire, it will lower your cruising
RPM slightly, and you might need to downshift to a lower gear to climb
a hill or fight a headwind.

3. Larger diameter tires also raise the center of gravity of the
machine slightly and change the steering feel slightly too.

All that said, if I found that a manufacturer offered an attractive
110/80x19 tire, I would check out their technical specifications
section to see if it would fit on my original rims properly and still
be the same diameter as the 100/90x19 tire.
 
Reply With Quote
 
The Older Gentleman
Guest
Posts: n/a
 
      11-06-2009, 10:01 PM
Biker Dude <(E-Mail Removed)> wrote:

> The Slime treatment did not seal the leak this time and I will
> replace the tire, look around inside, and replace the valve and report
> back.


Heh.
>
> Ques: The proper tire is 100/90x19. I tend to buyer larger tires than
> standard because it simply enlarges the diameter and offers more patch
> to grip the road. The is for cars. Should I go one size larger?
> 110/90x19 or any other size? My intuition tells me to keep the
> original size.....


Yes, do that. Mismatched tyres can set up some odd handling effects.


--
BMW K1100LT Ducati 750SS Honda CB400F Triumph Street Triple
Suzuki TS250ER (currently Beaving) Damn, back to five bikes!
Try Googling before asking a damn silly question.
chateau dot murray at idnet dot com
 
Reply With Quote
 
Bob Scott
Guest
Posts: n/a
 
      11-06-2009, 11:16 PM
Biker Dude <(E-Mail Removed)> writes
>This is fun. I simply ask the technical questions and the rest of you
>good souls log on and start swearing....
>
>1st: I just used Slime and if you use the recommended amount then it
>WILL NOT cause an imbalance.
>
>2nd: The Slime treatment did not seal the leak this time and I will
>replace the tire, look around inside, and replace the valve and report
>back.
>
>Ques: The proper tire is 100/90x19. I tend to buyer larger tires than
>standard because it simply enlarges the diameter and offers more patch
>to grip the road. The is for cars. Should I go one size larger?
>110/90x19 or any other size? My intuition tells me to keep the
>original size.....
>
>What say ye, FOAK? <as I duck for cover>


Stick with your 100/90 19. I dunno about the LTD but the standard Z550
felt fine with a Brdigestone BT45 in that size.

Come to think of it, my wife reckons the 100/90 19 Continental Avenue
front tyre on her bike is as good as the BT45 it replaced & I liked it
because it was cheaper than the BT :-)


--
Bob Scott
 
Reply With Quote
 
little man upon the stair
Guest
Posts: n/a
 
      11-07-2009, 12:07 AM
On Nov 6, 4:16*pm, Bob Scott <B...@bobandaileen.co.uk> wrote:

> Stick with your 100/90 19. I dunno about the LTD but the standard Z550
> felt fine with a Brdigestone BT45 in that size.


The decision to use a BT45 might depend on how much the owner rides in
the wet.

California has a dry, semi-mediterranean climate (read: almost north
African) most of the year and I don't ride in the rainy season any
way.

BT45's are a rain tire, in my estimation, and they are too squirmy
because of the
deep rain channels that allow the tread blocks to move around.

 
Reply With Quote
 
Biker Dude
Guest
Posts: n/a
 
      11-07-2009, 04:45 AM
Update: I used a large bench vise to break the beads on the tire.
Worked reasonably well, prying the carcuss of the rim was a treat.

Only obvious problem was that this skin had been on the bike for
10 or 20 years. The rim was embedded with rubber scum. Used
paint stripper to remove the rubber and polished the entire bead with
a rotary buffer.

Does anyone know the DOT date codes for tires? That's "tyres" for TOG
and it seems that tire ratings may be nearly universal nowdays.

Biker Dude
 
Reply With Quote
 
Biker Dude
Guest
Posts: n/a
 
      11-07-2009, 07:11 AM
On Nov 7, 12:53*am, Beryl <fo...@road.net> wrote:
> Biker Dude wrote:
>
> * ...
>
> > Only obvious problem was that this skin had been on the bike for
> > 10 or 20 years. *The rim was embedded with rubber scum. *Used
> > paint stripper to remove the rubber and polished the entire bead with
> > a rotary buffer.

>
> Because you want the new tire to spin on the rim easily?


I wanted to make sure that some of the small areas of corrosion were
removed along with the traces of embedded rubber. Don't want any
chance of a leak from the bead area.

It's a front tire and I don't think there's any chance of it spinning
on the rim.

It did get me curious about tires, tire ratings, etc., I looked up
some info such as speed ratings, sizing. In a metric world it seems
that tire diameters are measured in inches. Weird.
 
Reply With Quote
 
The Older Gentleman
Guest
Posts: n/a
 
      11-07-2009, 08:00 AM
little man upon the stair <(E-Mail Removed)> wrote:

> BT45's are a rain tire, in my estimation, and they are too squirmy
> because of the
> deep rain channels that allow the tread blocks to move around.


Utter nonsense. Unlike you, I use them regularly. On my third set on the
K.

And they're dual compound tyres: hard rubber on the centreline for
straight motorway running, and softer rubber on the sides (which don't
get used as much) for cornering.

And their rain channels are no deeper than any other


--
BMW K1100LT Ducati 750SS Honda CB400F Triumph Street Triple
Suzuki TS250ER (currently Beaving) Damn, back to five bikes!
Try Googling before asking a damn silly question.
chateau dot murray at idnet dot com
 
Reply With Quote
 
The Older Gentleman
Guest
Posts: n/a
 
      11-07-2009, 08:02 AM
Biker Dude <(E-Mail Removed)> wrote:

> I wanted to make sure that some of the small areas of corrosion were
> removed along with the traces of embedded rubber. Don't want any
> chance of a leak from the bead area.


<Nods in agreement>

Makles sense.

In any case, chromed rims are fairly highly polished and smooth, and
tyres don't generally slip on those.


--
BMW K1100LT Ducati 750SS Honda CB400F Triumph Street Triple
Suzuki TS250ER (currently Beaving) Damn, back to five bikes!
Try Googling before asking a damn silly question.
chateau dot murray at idnet dot com
 
Reply With Quote
 
little man upon the stair
Guest
Posts: n/a
 
      11-07-2009, 12:22 PM
On Nov 7, 12:11*am, Biker Dude <jacobsenpa...@hotmail.com> wrote:

> It did get me curious about tires, tire ratings, etc., I looked up
> some info such as speed ratings, sizing. *In a metric world it seems
> that tire diameters are measured in inches. *Weird.


We started out with the English system, so we have wheels defined in
inches and speed ratings defined in miles per hour, and I have no
problem whatever with that.

It's hard enough to understand the language of engineering using the
English system, without complicating it with a system where it's easy
to be in error by a factor of 10, 100, or 1000.

Remember the American Mars probes that failed because of a problem
with a conflict between the English system and the metric system?


The metric system is a French conspiracy to undermine the Americans
and British with confusing units. It looks logical at first, and then
you discover absurdities in the basic units.

Like, anybody can understand inflation pressure in pounds per square
inch,
they deal with canned items that typically contain about a pound of
whatever.

You can get a general idea that an ounce is 1/16th of a pound, but
nobody ever talks about tire inflation pressure in terms of ounces per
square inch...

But the pascal, as I recall, is the basic pressure unit of the metric
conspiracy
and it's approximately equal to the weight of an annoying French fly
sitting on a postage stamp in a vacuum.

Is that insane, or what?

 
Reply With Quote
 
 
 
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Round 4, FOAK: 1982 Kawie KZ550 C3 LTD Restoration Options Biker Dude Motorbike Technical Discussion 25 10-26-2009 10:07 PM
Round 4, FOAK: 1982 Kawie KZ550 C3 LTD Restoration Options Biker Dude UK Motorcycles 28 10-26-2009 10:07 PM
Round 3, FOAK: 1982 Kawie KZ550 C3 LTD Restoration Options Biker Dude Motorbike Technical Discussion 73 10-10-2009 07:16 AM
Round 3, FOAK: 1982 Kawie KZ550 C3 LTD Restoration Options Biker Dude Classic Motorbikes 69 10-10-2009 07:16 AM
Round 3, FOAK: 1982 Kawie KZ550 C3 LTD Restoration Options Biker Dude UK Motorcycles 78 10-10-2009 07:16 AM


All times are GMT. The time now is 05:43 AM.

1 2 3 4 5 6 7 8 9