BMW K bikes (Bricks)

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1Back to top Go down    Beat the heat on Sat Jan 16, 2016 9:33 pm

Mike Bergenstein

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Co worker told me there is a heat deflection device placed between gas tank and motor . Supposedly heat on your legs is about 40% less. Being from sunny hot Florida sounds like something I would like very much. Ever hear of such a thing? I'd love it and my 89 se would be a little more tolerable.Thanks,Mike from sunny fl.

    

2Back to top Go down    Re: Beat the heat on Sat Jan 16, 2016 9:53 pm

92KK 84WW Olaf


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The underside of the gas tank has an insulation faced with reflective aluminium foil.

In addition there are foam baffles across the top of the air box.

I am not sure if the RS fairing has internal baffles, certainly the RT/LT fair has them. Make sure they are all in place.

In hot climates removing the lower RT/LT panels and other bits seems to be of benefit.

The fuel lines are in the airstream behind the radiator and pick up a lot of heat too. In hot weather the gas tank can get very warm. For us guys in colder climates this is a wonderful thing.

However the number of posts on the heat issue suggests a K in hot weather will always be hot. I never remember being hot on 70s Japanese in line aircooled fours


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1992 K100LT 0193214 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 84,100 miles
    

3Back to top Go down    Re: Beat the heat on Sun Jan 17, 2016 1:19 am

charlie99

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some use what they call a "blanket" of reflective stuff between the tank and frame
for some this seems to reduce the noticed heat to the tank

good luck


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

4Back to top Go down    Re: Beat the heat on Sun Jan 17, 2016 7:04 am

Holister

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It's calledThe Johnny Blanket.


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1988 K100RT VIN No. 0094680
1989 K100RT VIN No. 0097367 (naked)
1996 K1100RS VIN No. 0451808
Fuel: 95 Octane
Engine Oil:Nulon Full Synthetic 15W50
Gear Box Oil: Nulon Synthetic 75W90
    

5Back to top Go down    Re: Beat the heat on Sun Jan 17, 2016 7:15 am

Dai

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Ebay - search for

engine bay reflective foil

e.g.

http://www.ebay.com/itm/DEI-010462-Reflect-A-Cool-24-x-24-Radiant-Heat-Barrier-/381513874150?hash=item58d3ffbae6:g:pNMAAOSwa-dWj5hj&vxp=mtr

(Which reminds me - I must get some for LFB)


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'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

6Back to top Go down    Re: Beat the heat on Sun Jan 17, 2016 9:58 am

Point-Seven-five

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Here in the states there is a product called Reflectix which is a type of high heat bubble wrap sandwiched between two layers of mirrored mylar. I use it on my K75RT. Works well and is pretty inexpensive.

One roll can do about 6 bikes.


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Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

7Back to top Go down    Beat the heat on Sun Jan 17, 2016 2:50 pm

Mike Bergenstein

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Thanks,much appreciated! I will keep you posted. Perhaps that's why I don't see many bricks down in s.w Florida.ha,ha! Thanks again, Mike from sunny fl.

    

8Back to top Go down    method on Sun Jan 17, 2016 4:40 pm

nvboy

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Does anyone have pictures showing where and how the foil should be placed? I just don't want to throw it over the engine like a saddle blanket. Too much heat isn't usually much of a problem here in my end of the Great White North but I may be taking a trip to Mt. Rushmore this summer and that's plenty hot for me.

Thanks
Nvboy


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9Back to top Go down    Re: Beat the heat on Sun Jan 17, 2016 8:18 pm

RicK G

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I haven't seen one done but I think the idea is to get as much coverage as possible and trim off what is sticking out, not very scientific I know but I remember when Jonny did his K1100 and that was fairly much the method.


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

10Back to top Go down    Re: Beat the heat on Mon Jan 18, 2016 12:02 pm

Point-Seven-five

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I did the blanket on my K75RT.

The Reflectix is easily cut with scissors and a utility knife. Remove the tank, and the side covers. Drape a piece of the Reflectix about 2 1/2 feet wide by 5 feet long over the frame from the steering head back to about where the back fender is.

Make some cuts to allow the blanket to fit over the tank mounts and trim it to extend a bit beyond the front of the tank. Cut a slot to allow the tank electrical cable to get out. Cut some holes to get the rear tank mounts through. You also need to cut some slots and holes to allow the side panels and the seat to go on.

Put the tank and side panels on and trim any of the blanket that sticks out. Might take some fiddling around, but it's not rocket science. Whole job shouldn't take more than a couple hours.

While you're at it, get some grey or black polyurethane foam, and use it to plug any gaps between the fairing and the engine that allows heat to get out onto your legs instead of out the fairing vents.

I don't know if it will fit, but on my K75 I put a return line fuel cooler in front of the engine. My tank was a major source of heat on my bike, and adding the cooler made a huge improvement in comfort. I posted a thread here on my installation. Do a search on K75 Fuel Cooler.


__________________________________________________
Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

11Back to top Go down    Re: Beat the heat on Mon Jan 18, 2016 4:38 pm

Holister

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@nvboy wrote:Does anyone have pictures showing where and how the foil should be placed? I just don't want to throw it over the engine like a saddle blanket. Too much heat isn't usually much of a problem here in my end of the Great White North but I may be taking a trip to Mt. Rushmore this summer and that's plenty hot for me.

Thanks
Nvboy
Follow the link I pasted in post #4 above.
Cheers


__________________________________________________
1988 K100RT VIN No. 0094680
1989 K100RT VIN No. 0097367 (naked)
1996 K1100RS VIN No. 0451808
Fuel: 95 Octane
Engine Oil:Nulon Full Synthetic 15W50
Gear Box Oil: Nulon Synthetic 75W90
    

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