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1Back to top Go down   Radiator surround repair Empty Radiator surround repair Thu Feb 16, 2012 2:31 pm

88

88
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Life time member
I stripped the radiator cowl off the bike this afternoon to paint the mesh/grille and was disappointed to find these tiny cracks in the fairing centre piece....

url=https://servimg.com/view/16818459/58]Radiator surround repair Img_0320[/url]

Radiator surround repair Img_0321

they are fragile but not completely loose...

Does any body have any thoughts on the best way to repair and reinforce this? It's a bit fiddly for fiberglassing I think.

88

    

2Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Thu Feb 16, 2012 4:30 pm

walfish

walfish
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Not too fiddly for fiberglassing, just pre cut all you matt to the shapes required, I would use a dremmel to V groove the cracks both sides, then start the repair.

    

3Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Thu Feb 16, 2012 4:36 pm

charlie99

charlie99
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maybe from the other side 88

what i would do is get some plasticene ....or craft clay and make a kind of cradle ,,,that would give you a mould for the resin and glass fibre to sit in whilst hardening .

once hardened you could grind it off smooth etc

did this on some fibre glass repairs not so long ago and it works

hope that helps


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%ORadiator surround repair Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

4Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Thu Feb 16, 2012 4:59 pm

sidecar paul

sidecar paul
Life time member
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Moto smith posted a brilliant video under 'abs fairing repair'. Well worth a look. And our old friends Motobins have brand new RT rad surrounds, in white, for only £38.
http://stores.ebay.co.uk/motobinsbmw/_i.html?rt=nc&_sid=680191177&_trksid=p4634.c0.m14.l1513&_pgn=2
Maybe some help.
Paul.


__________________________________________________
'84 K100RS (0014643) (owned since '85), 86 K100RS (0018891) with Martello sidecar (built as an outfit in '88),
'51 Vincent (since '67),'72 Montesa Cota (from new), '87 Honda RS125R NF4 (bought 2015) 
....No CARS never ever!
    

5Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Thu Feb 16, 2012 5:26 pm

88

88
Life time member
Life time member
@charlie99 wrote:maybe from the other side 88

what i would do is get some plasticene ....or craft clay and make a kind of cradle ,,,that would give you a mould for the resin and glass fibre to sit in whilst hardening .

once hardened you could grind it off smooth etc

did this on some fibre glass repairs not so long ago and it works

hope that helps

Interesting idea Charlie. Would you mould the plasticene then fibreglass (would only use surfacing tissue) and then put the plasticene back to hold it in place? Have I got it right?
88

    

6Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Thu Feb 16, 2012 6:56 pm

Crazy Frog

Crazy Frog
admin
admin
@charlie99 wrote: what i would do is get some plasticene ....or craft clay and make a kind of cradle ,,,that would give you a mould for the resin and glass fibre to sit in whilst hardening .

Years ago, I found a very cheap way to make a mould for fibreglass.....
Go to see your pharmacist and ask him for the plaster bandage used in the hospital to make a cast. This is cheap and works like a charm.
I made a full size fairing using this material for the mould Very Happy

CF


__________________________________________________
Radiator surround repair Frog15Radiator surround repair Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

7Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Fri Feb 17, 2012 3:59 am

charlie99

charlie99
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roughen up the underside surfaces that your going to fiberglass (or the top section in this case ...the invisible part ) do your cuts into he edges so that you get a good bond at the break areas ...then just get a lump of plasticine to wrap around the lower side (the visible bit) and come up about an inch higher than the frame that your surrounding ....you may need to put a bit to make end stops so you like making a dish around the area that you intend to work on ...start off but a light coating od resin then apply the matting material cut to size of corse ...then dab and dab the material to get alll the air out of it and rally soaked with resin ...a little more resin can kinda make it all flush and take out the bumps ...whilst runny its kinda self leveling so best to find some way of supporting the main body at the right angle whilst it goes off ...shouldnt take long

after wards remove the plasticene and see what has happened and if you need to do the same on the under side ....you can get some billiant resuts this way ...with out all the mess ...of corse a rotary sander is good for cleaning up and getting it all smooth later shouldnt cost much either ....


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%ORadiator surround repair Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

8Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Fri Feb 17, 2012 7:29 am

88

88
Life time member
Life time member
Cheers Charlie. I have all the sanders etc here, just need the plasticise to give it a go.


__________________________________________________
Radiator surround repair Ir-log11 88....May contain nuts!Radiator surround repair Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

K1100LT 1992 - AKA Big Red
K1100RS - 1995. AKA Rudolf Von Schmurf (in a million bits)
K1/RS - AKA Titan (unique hybrid by Andreas Esterhammer)
    

9Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Sun Feb 19, 2012 8:14 am

88

88
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Life time member
This dropped out of the bike when my back was turned (with the grille removed)...

Radiator surround repair Img_0325

It's about 100mm long - can anyone identify it and where it goes?

88


__________________________________________________
Radiator surround repair Ir-log11 88....May contain nuts!Radiator surround repair Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

K1100LT 1992 - AKA Big Red
K1100RS - 1995. AKA Rudolf Von Schmurf (in a million bits)
K1/RS - AKA Titan (unique hybrid by Andreas Esterhammer)
    

10Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Sun Feb 19, 2012 8:31 am

Inge K.

Inge K.
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Number 18? part diagram says, gasket,right side.

Radiator surround repair Paknin10

Inge K.

    

11Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Fri Feb 24, 2012 6:18 am

88

88
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Life time member
@Inge K. wrote:Number 18? part diagram says, gasket,right side.

Inge K.

That's probably it Inge - although it's so squashed and bent out of shape it's hard to recognise. It was easier to see where it goes working from inside the fairing - It stops the air gettting into/at the bottom of the clove box pocket. Thanks for the diagram.

88

    

12Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Fri Feb 24, 2012 6:50 am

88

88
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Life time member
Here's how the repair worked out....

I broke out the loose piece of the fairing and use a dremmel/Hobby tool with a mini disc to open out the cracks and rough the surrounding area. Next, using Charlie's Top Tip above I used some modelling Clay/Kids Plasticene, mixed and rolled out flat with a bottle, to form a mould which I held in place with a little block of wood and quick clamps.

I applied some surface tissue (see description by Charlie99 above for technique) to the crack faces and replaced the loose piece before covering the whole area with pre-cut fine surfacing tissue. The idea here was not to make a complete repair at this stage. just to get things realigned and held together....

url=https://servimg.com/view/16818459/67]Radiator surround repair Img_0329[/url]

Once that had gone off (about 90 minutes) I was able to pick up the whole piece and flip it over. Working on the back I applied 2 layers of oversize tissue and worked out well past the edge of the piece. The outer bits are easy to trim with a good craft knife just before they have fully gone off...

url=https://servimg.com/view/16818459/68]Radiator surround repair Img_0330[/url]

Once trimmed back to the sides of the original Piece I let it stand for the resin to cure fully before finally tidying up the edges with the dremmel and redrilling the scrrew holes.

Radiator surround repair Img_0331

It's hard to appreciate from these pictures just how strong the repair is I roughly doubled the width of the material on mostly on the inside of the fairing. It's out of sight so I didn't bother repaining.

While waiting for the fiberglass to arrive I had stripped the grille and repainted the mash and surround and re-glued the rubber surround back in place. I also gave a light shot of satin black to the radiator fins so that they look better when seen through the mesh..

Here's the before, during and after shots...

url=https://servimg.com/view/16818459/70]Radiator surround repair Img_0332[/url]

Radiator surround repair Img_0333

There a bit of sanding dust on the mesh showing up in the flash an the last shot but it looks good as gold in normal light.....

url=https://servimg.com/view/16818459/72]Radiator surround repair Img_0334[/url]

All of this did me a favour because it led me to the tank leak which is now sorted too....but that's another storey cheers

88KE



Last edited by 88KE on Fri Feb 24, 2012 6:52 am; edited 2 times in total (Reason for editing : because I type like a monkey!)

    

13Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Fri Feb 24, 2012 8:49 am

charlie99

charlie99
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super result 88 !!!

good work


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%ORadiator surround repair Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

14Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Fri Feb 24, 2012 12:05 pm

MT350Explorer

MT350Explorer
Life time member
Life time member
Superb mate - bet it feels good to have it sorted!

I'm liking the gold, have you got photos of the whole bike up somwhere?

Best
Dave


__________________________________________________
1991 K100 RS 16 valve
    

15Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Fri Feb 24, 2012 12:25 pm

88

88
Life time member
Life time member
Dave...some pics HERE and HERE ..

I can't decide about this colour. Some days it looks great others really wishy-washy. I think that has to do with old pale metallic colours(especially silver) not ageing very well. I also think the seat would be better in two tone (black on the seat panels, beige in between) and it bugs me that the back rest is a different colour.

I'm considering a colour change when I do the full resto but that will have to wait till funds are more liquid!

88KE


__________________________________________________
Radiator surround repair Ir-log11 88....May contain nuts!Radiator surround repair Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

K1100LT 1992 - AKA Big Red
K1100RS - 1995. AKA Rudolf Von Schmurf (in a million bits)
K1/RS - AKA Titan (unique hybrid by Andreas Esterhammer)
    

16Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Fri Feb 24, 2012 12:44 pm

MT350Explorer

MT350Explorer
Life time member
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I really like that colour 88, I'm a big fan of period colours on the whole. I guess it is a colour of its time and maybe a bit faded - but no worse for it IMHO. The matching pannier colour is very cool.


__________________________________________________
1991 K100 RS 16 valve
    

17Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Fri Feb 24, 2012 8:41 pm

88

88
Life time member
Life time member
@MT350Explorer wrote:I really like that colour 88, I'm a big fan of period colours on the whole. I guess it is a colour of its time and maybe a bit faded - but no worse for it IMHO. The matching pannier colour is very cool.
Yep I think the matching panniers are a very nice look. I think the paint and radio is the difference between the RT/LT and your point about "a colour of it's time" is the reason I'm dithering. There's merit in keeping it original.
88

    

18Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Sat Feb 25, 2012 7:22 am

Inge K.

Inge K.
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88KE wrote:I think the paint and radio is the difference between the RT/LT.
.....and black footrest bridges and engine covers, comfort seat and top box.

From -88 on another windscreen (more straight up, wider and taller), and a dash in
top of the fairing with fuel level and water temp. instruments, power socket, c.lighter.
And a bigger top box bolted directly to the fastback (not on all markets).

Inge K.

    

19Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Sat Feb 25, 2012 6:21 pm

88

88
Life time member
Life time member
Check on the engine and footrests on my 88 but not on the screen and dash etc. I guess it mist have been manufactured in 87 but registered in 88.
88KE


__________________________________________________
Radiator surround repair Ir-log11 88....May contain nuts!Radiator surround repair Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

K1100LT 1992 - AKA Big Red
K1100RS - 1995. AKA Rudolf Von Schmurf (in a million bits)
K1/RS - AKA Titan (unique hybrid by Andreas Esterhammer)
    

20Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Sun Feb 26, 2012 2:20 pm

sidecar paul

sidecar paul
Life time member
Life time member
88KE,
If you look at your engine number the second set of digits give the week number and year which the engine was assembled. Eg '2388' would have been made in week 23 of 1988.
Cheers,
Paul.


__________________________________________________
'84 K100RS (0014643) (owned since '85), 86 K100RS (0018891) with Martello sidecar (built as an outfit in '88),
'51 Vincent (since '67),'72 Montesa Cota (from new), '87 Honda RS125R NF4 (bought 2015) 
....No CARS never ever!
    

21Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Sun Feb 26, 2012 4:41 pm

Inge K.

Inge K.
VIP
VIP
Another option is....go to Realoem and type your VIN number and find out when rest of the bike did leave the factory.

Another difference between RT/LT was that the LT did have a Boge Nivomat shock
as standard, but not shure if this is valid for all model/years.

New member "Responder" did post a picture of his LT, which seems to have the
genuine screen that was used from -88, or it is one very similar to it.

Inge K.

    

22Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Sun Feb 26, 2012 7:57 pm

88

88
Life time member
Life time member
Bingo! Aug 1987. That's a handy link thanks Inge. I saw the pick of responders screen I too thought it looked original.


__________________________________________________
Radiator surround repair Ir-log11 88....May contain nuts!Radiator surround repair Ir-log11

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

K1100LT 1992 - AKA Big Red
K1100RS - 1995. AKA Rudolf Von Schmurf (in a million bits)
K1/RS - AKA Titan (unique hybrid by Andreas Esterhammer)
    

23Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Mon Feb 27, 2012 5:25 pm

Inge K.

Inge K.
VIP
VIP
Then you was close as it gets, the production of next years models (usually) starts in month 09.

Inge K.

    

24Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Mon Mar 05, 2012 5:19 pm

Moto Smith

Moto Smith
Silver member
Silver member
@sidecar paul wrote:Moto smith posted a brilliant video under 'abs fairing repair'. Well worth a look. And our old friends Motobins have brand new RT rad surrounds, in white, for only £38.
http://stores.ebay.co.uk/motobinsbmw/_i.html?rt=nc&_sid=680191177&_trksid=p4634.c0.m14.l1513&_pgn=2
Maybe some help.
Paul.

I was very pleased with the results. Two cracks 3 inch and 6 inches long together with a re-construction of a missing tab for a bolt. I believe that it works with ABS and fibreglass.

Cheers, M

http://www.markaspery.com
    

25Back to top Go down   Radiator surround repair Empty Re: Radiator surround repair Mon Mar 12, 2012 4:59 pm

MT350Explorer

MT350Explorer
Life time member
Life time member
Good info Guys, thanks. Checked mine out using both of the above ways; engine built and bike assembled both in summer of 1990.
Best
Dave


__________________________________________________
1991 K100 RS 16 valve
    

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