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Buell Motorcycle Forum » Big, Bad & Dirty (Buell XB12X Ulysses Adventure Board) » BB&D Archives » Archive through June 09, 2008 » Rear cylinder heat... « Previous Next »

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Dldeano
Posted on Thursday, May 22, 2008 - 08:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

My '08 is a bit hot on the old right thigh. Switched from HD dino 20/50 @3,000 miles to Mobil 1 synthetic V-twin 20/50, and it seems to be a bit hotter on the thigh now. Fan seems to run about the same after shut down (maybe a bit shorter).

Is is hotter, or shedding heat more efficiently?? Am I nuts?

Any body else similar?? Where can I get Odie's Heat blankets as Summer's here, figure's a heat solution would be in order anyhow...

Thanks.

Dean
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Maximum
Posted on Thursday, May 22, 2008 - 08:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Odie is a Badweb Sponsor.

http://www.badweatherbikers.com/buell/messages/171 43/334720.html?1211242077
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Dldeano
Posted on Thursday, May 22, 2008 - 08:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Saw that previously, couldn't remember where...thanks for the link!

sent an email, so hopefully we can get this squared away.

Is the 2 piece better, as it really seems to be 'the gap' near my thigh that cooks.
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Maximum
Posted on Thursday, May 22, 2008 - 09:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The gap will never again be a problem for you, 100% effective against the inner thigh hot blast.
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Gsilvernale
Posted on Thursday, May 22, 2008 - 10:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

There are two causes of heat on the right side. Radiation and convection.

The convection is the warm air that you feel coming out of the vent below the seat on the right side. This is usually not too bothersome. Convection is good cause its whats cooling the cylinder down.

The Radiation is usually the culprit. There are two major heat sources on the right side. The cylinder is very close to the frame, but I believe that is a secondary heat source. The primary source being the exhaust pipe coming out of the rear cylinder, doing a 180 and then headed towards the front of the bike. Once again, in very close proximity to the frame.

The solution is to put a heat barrier between the frame and the heat sources. Some people have tried simple foil tape.

I have installed an automotive heat barrier, which consists of three layers. The first layer is a aluminum foil, followed by a thin sheet of silica fabric and finally an adhesive backing which will attach to the frame.

I rode for 2 hours today, and after about 1.5 hours, the frame started to get warm, but it never got hot like before I installed the heat barrier.

Its a tight fit to get the barrier in place, especially with the adhesive trying to catch as you slide the barrier down between the cylinder and the frame.

I cut a single peice to fit and then stripped off the adhesive covering.
Cut the adhesive covering into 1 inch wide strips and placed them back over (lightly) the adhesive. Then slid the barrier into place and pulled off the strips one by one. Worked like a charm.

You can find the Heat Barrier on line, or at some specialty speed shops. I could not it at Advance Auto Parts.
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Gotj
Posted on Thursday, May 22, 2008 - 10:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

My low/no cost solution is foam weatherstripping filling in the right gap between the seat and the frame. No more right thigh broiling.
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Bobmcc
Posted on Friday, May 23, 2008 - 08:35 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

My low/no cost solution is made from some leftover Velux aluminum step flashing. It's a heavy flashing already colored same as the Uly frame. I trimmed it to fit much like Odie's blanket on the right side and hand formed it to hug the frame. I drilled a hole for the airbox cover bolt and that keeps the shield in place.
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Glenn
Posted on Friday, May 23, 2008 - 08:37 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Hi Bob,

Some pictures would be great. It sounds like a good solution.

Thanks,
Glenn
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Pso
Posted on Friday, May 23, 2008 - 08:53 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I had Odie's one piece blanket, just added the upper section of the 2 piece system. Was able to use the original one piece system with the addition of the upper section of the two piece system. It has not been hot enough out here yet to test the efficacy, but initial impression is that the system looks promising.
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Skiman
Posted on Friday, May 23, 2008 - 02:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I just got Odie's 2 piece and it works great. It's been cooler here in NE, but I can feel it reduces the heat dramatically.
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Unibear12r
Posted on Friday, May 23, 2008 - 08:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Tin foil underneath. Painted flat black on the side facing out. Secured to the right rear screw on the airbox cover and extends down to below the top of the frame rail and back under the seat. Works wonders and very hard to notice. Plenty of pics back in the Heat Management threads.
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Unibear12r
Posted on Friday, May 23, 2008 - 08:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Found a pic. I also use foil to make sure all the fan air goes down and out over the rear tire. Big change and I've been doing it sense my Uly fried me when I made the Run To The Wall two years ago. Still on the same foil too.



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Bobmcc
Posted on Friday, May 30, 2008 - 06:54 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Here are some pictures of my heat shield and raw material.

right side view


rear view


original material

The shield is very effective at preventing right thigh roasting where my leg hugs the frame.
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Glenn
Posted on Saturday, May 31, 2008 - 08:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Thanks Dave! I like this a lot and will probably make one myself.

Glenn
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Glenn
Posted on Sunday, June 01, 2008 - 08:40 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Sorry about calling you Dave Bob!
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Dldeano
Posted on Sunday, June 01, 2008 - 11:11 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Thanks to all...
I have used a bit of foil this past week w/ surprisingly good results (upper 80's 2 up Friday). I like the metal shield, as it does not "trap" heat all over, just look to keep from deep frying my thigh. Does it secure only to the frame lug?? My dad has a good eye for that stuff, I may put him to task when he gets here. Thanks.

Dean
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Unibear12r
Posted on Sunday, June 01, 2008 - 05:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Bob's does look better! I did mine as just a test but it worked so well I just left it. Same foil now it both places over a year later.
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Bobmcc
Posted on Monday, June 02, 2008 - 08:22 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Hey, no problem Glenn, I've been called much worse, and often (but let's leave my mother-in-law out of this ;^). Dean, the metal shield has just the single hole for the airbox cover shoulder bolt. The tab on the aft portion rides on the seat support nub as a further measure to keep it in place. I also sort of "rolled" the top with pliers to soften the edge where it might contact the seat pan. All in all it took about 10 minutes to snip and form it. The pictures don't show it but the shield extends the full length of the frame opening, continuing forward a few more inches under the airbox cover.
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Dldeano
Posted on Tuesday, June 03, 2008 - 08:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Thanks.

The foil has worked very well...but when my dad gets here I am going to put him to task for a bob original, as well as a muffler cradle...he has the tools and an eye for that stuff, plus a good excuse to spend a few hours, and a few beers, with the ol' man

What type of material is that, bob?
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Bobmcc
Posted on Wednesday, June 04, 2008 - 01:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The material is Velux skylight step flashing and after some research I believe it to be type EDL size 308. I'm no materials specialist but I think it's painted aluminum. I suppose I could throw a magnet on it and find out... You can buy it by the box at Home Depot or maybe snag a sample?
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