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View Full Version : Plastic On 1995 R1100gs Turning Chalky


ODIN
04-04-2005, 06:24 PM
Hi,

Ive been noticing for several years that some of the black plastic parts on my 1995 R1100GS are fading from a dark grey black to a light grey in color.

(Ive had this bike since new in 1995.)

It seems as though there are a couple of different types of plastic involved. Not all of them are degrading the same way.

These parts are black molded plastic, the color is 'thru' rather than applied to the outer surface. These parts are not painted.

The airbox has faded, and if i run my finger over the surface, i get a powdery whitish grey residue. Like chalk.

The plastic cover on the bikes right side above the fuel injector has turned to an ugly streaky black and grey pattern.

The plastic (bmw) handguards on the handle bars are faded and its easy to see the swirly effect from when the plastic was injected into the mold. They used to be uniform black, and are now a crappy looking light grey.

The hardbag attachment rails are also faded and chalky. They almost look 'brittle'.

But the air snorkel that leads into the airbox is as black and pristine as it was when new. So are many other plastic parts.

These effects are not from splashed gasoline, or sloppy polish application.

Needless to say, im becoming pretty unhappy with the way the bike is beginning to look, despite my efforts to keep it clean and babied.

My buddy suggested Armor-all, which i did try on a hidden edge of the sidecover. It turned it black looking for about 15 minutes, then as it dried it went to a darker version of the splotchy look again. Unacceptable.

Ive had other bikes whose surfaces were either painted or chromed. They never looked like this after 6 or 10 years.

Im guessing the effects of the sun and heat have dried out some of these items. But clearly, not all of the plastic is experiencing this aging effect.

Does anyone have any ideas on how to revitalize these parts to a newer looking condition?

My guess is that id have to pay to replace these items. A crappy alternative.

Odin

soldemall
04-04-2005, 08:10 PM
I use a product called Mother's Back to Black. Works like a charm.

dano
04-04-2005, 09:08 PM
Plastic and plastic derivitives, age differently, even when properly maintained. Exposure to sun, high temps (engine / exhaust) can add to the demise as well.

Time as well, only makes matters worse. Do you park your bike outside unprotected (no cover)?

Once the plastic has begun it's decline in quailty, it's next to impossible to revive it with various chemicals. Some will give it a "momentary fix", but that's about it.

If you plan on keeping your bike and it has served you well, it may well be worth investing in some new plastic.

ODIN
04-04-2005, 11:09 PM
Im in Minnesota, so it gets a 4-5 month vacation every winter. I ride about 6000 miles/year.

The bike is always garaged except for when im riding it or during the summer weekdays when its parked outside while im at work. I dont use a cover.

Ive been pretty happy with it for the most part. But its a bit frustrating to watch this bike deteriorate right before my eyes, especially knowing that other bikes ive had didnt suffer anywhere near this bad cosmetically.

Yes, i suppose the real answer is to replace these parts. But ive got better places to spend that money than replacing body parts that have dried up and faded out.

Possibly ill try some of that Mothers back to black. Ive got nothing to lose.

Odin

jgr451
04-04-2005, 11:49 PM
Sun.Water.Armourall.

Cliffy777
04-05-2005, 06:11 AM
another vote for back to black. i have always used armourall, but it didn't do the job on my last bike, then someone suggested back to black. it worked for me, hope it does for you.

dlearl476
04-05-2005, 09:36 AM
Two words for ya: Lemon Pledge.
If you INSIST on a high dollar fix, get in touch and I can hook you up with some newfangled WURTH rubber treatment. Has German writing on the label and costs 10 times as much as Pledge, so it HAS to be good, right? :dunno (Actually, I really do LIKE the Wurth stuff, I use it on all MY German toys! It has a UV protectant which Pledge doesn't) ;)

username
04-05-2005, 09:52 AM
Two words for ya: Lemon Pledge.
If you INSIST on a high dollar fix, get in touch and I can hook you up with some newfangled WURTH rubber treatment. Has German writing on the label and costs 10 times as much as Pledge, so it HAS to be good, right? :dunno (Actually, I really do LIKE the Wurth stuff, I use it on all MY German toys! It has a UV protectant which Pledge doesn't) ;)

does the pledge bring old plastic back to new as well as protect new plastic? should i be giving my nice new looking bike a lemon fresh scent?

dano
04-05-2005, 11:28 AM
I use Lemon Pledge on the body panels, dash, front fender, rear tail-section and whatever else, on my '03 RT.

None of my plastic has gone bad yet, so I can't speak to it's effectivness on old stuff. :dunno

It is good for a cheap, quick shine though.......... :thumb

kbasa
04-05-2005, 12:35 PM
Gummipfledge. Available from the local BMW cage dealer. A tube will last you a long, long time. It returns plastics to black without making them shiny. It restores scuffs on bags, wax on plastic marks and all kinds of other plastic related issues on BMWs (and Hondas!)

fish
04-05-2005, 02:22 PM
Gummipfledge. Available from the local BMW cage dealer. A tube will last you a long, long time. It returns plastics to black without making them shiny. It restores scuffs on bags, wax on plastic marks and all kinds of other plastic related issues on BMWs (and Hondas!)

I second the motion for Gummipfledge (izzat how it's spelled?). I've seen it at bmw moto dealers too.

Back to Black is quite temporary. Gummistuff will last a long time and actually seems to soak into the plastic.

Braddog
04-05-2005, 08:36 PM
....so tried it this past weekend. Works on virtually all surfaces, good shine, good cleaning ability, lemony smell. :wow

No clue if it will help the gentleman out with the plastic problem.

dano
04-05-2005, 10:29 PM
Pledge also makes some in Orange scent.

I got some.....yum!! :clap

ODIN
04-06-2005, 01:07 PM
Well, last night i stopped into my local dealer and ordered a new sidecover for the GS. The sidecover is the most visually displeasing of the fading plastic parts. So, for 19$ that will look new again. I think ill check the BMW car dealer for Gummifledge. I like the idea that it may be soaking into the dried plastic. May hold up longer to the elements.

In addition to my fading black plastic story...i had an issue with the clear windshield too. The thing began to go from clear to yellow. Add to that some minor crazing, and some light scratches from many washings, it looked pretty bad. I kind of accepted the deteoriation of the clear shield as relativly normal wear and tear, a cost of riding and keeping some of the sand, bugs and wind off of me. I replaced it with the BMW smoke shield, man that really looks sharp on my black GS. Damn thing was almost 100$ though. One of my honda riding buddies commented on my new shield, and i told him the story, in fact i went to the garage and showed him the old clear shield i had replaced. He thought it odd, in that the shield on his hondaline fairing (3 years older than my bike) had not discolored one bit, although he did have a few light scratches in it like i did. Either honda does something different and better when it comes to plastic, or im doing something wrong. HAHA.

Odin