More on HOT wheel honda

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More on HOT wheel honda

Post by Haskill »

Hi, I now have some definite temps. I can give taken with a non-contact thermometer after a 15min. ride. Also without rear body panels on both sides and without belt drive cover.

Maybe someone can give me an idea if these temps. are within spec. range? All in degrees Fahrenheit.

Muffler .............. 510 (skin upper rear, not heat shield)
Swingarm inner race..... 205
outer race .... 241
wheel rim ...................... 151
transmission case......... 147
wheel hub........................ 163

thanks,
pete.....
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Re: More on HOT wheel honda

Post by Bear 45/70 »

Looks like bad bearings to me.

Muffler temp is irrelevant.
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Re: More on HOT wheel honda

Post by CW3Jack »

I have to agree. At least a rear bearing is easy to change.
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Re: More on HOT wheel honda

Post by piletones »

This might be what's wrong with mine(elite 150). I've eliminated the exaust gasket being the problem. The wheel/tire gets HOT. I can smell it at red lights. Much more so after a strech of going 50 to 60 mph

The reason I think it might be the bearings Is because it has always made a rrrRRRrrrRRRrrrRRR sound that verys with speed.

But can bad bearings cause this much heat? On a 100 degree day the wheel/tire gets so hot you pull back your hand quick when you touch the rim, and you can only hold your finger on the tire for maybe 1/2 a second. Anyway, I love this scooter and have put 3000 miles on it in the last year, but I'm about to give up and craigslist it because of this hot wheel thing. All I can think about when I ride it is how the rear tire is going to somehow blow up from the heat.

I'll also add that I don't think the brake is rubbing because the wheel spins free and the pads are so worn that There's no adjustment to make the pedal engage fully. (front pads are good, that's what's important)

Thanks, and Thanks to everyone on this forum for the wealth of information.
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Re: More on HOT wheel honda

Post by Bear 45/70 »

Bad bearings can cause so much heat the the wheel hub on a car will actually fail and break into pieces and cause the wheel fall off the vehicle.
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Re: More on HOT wheel honda

Post by donny »

Bear 45/70 wrote:Bad bearings can cause so much heat the the wheel hub on a car will actually fail and break into pieces and cause the wheel fall off the vehicle.
yup my friends hub cap melted off with heat and that warned him about bearing heat a while ago
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Re: More on HOT wheel honda

Post by piletones »

Well, I took everything apart, bearings are fine. I've done some things like take off the front carb access panel and take off the front side fairings to allow more airflow. The wheel doesn’t seem quite as hot, but still 189 degrees at the tire bead. It seems hot but I guess that’s just how it is. :|
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Re: More on HOT wheel honda

Post by Bear 45/70 »

piletones wrote:Well, I took everything apart, bearings are fine. I've done some things like take off the front carb access panel and take off the front side fairings to allow more airflow. The wheel doesn’t seem quite as hot, but still 189 degrees at the tire bead. It seems hot but I guess that’s just how it is. :|
That seems very hot to me as after riding 11+ miles to town, around town for and hour or so and then the 11+ miles home I can put my hand on the rim and it is only warm to the touch, maybe 80° at the most. Something isn't right.
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Re: More on HOT wheel honda

Post by Dan Durston »

I hate to keep this spinning in a circle, but if it's not the bearings and you've got gear oil in there, then there's not too much it could be besides brake rub. Maybe try actually removing the rear brake shoes and go for a short ride. Be safe though since you won't have rear brakes.
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Re: More on HOT wheel honda

Post by piletones »

I don't think it’s the brake pads because the tire gets hotter than the hub.

What I do think is not too many elite riders are noticing how hot there tire gets. The design is weird because the header and muffler are all in a cluster. And this cluster is in the same shape as the wheel that it sets right next to.

I did a little experiment tonight; I road the scoot 6 miles at an average speed around 40. When I got back the tire temp was 160. I let it set there shut off for 4 or 5 min. I then re-measured the tire, it was 190 up by the back of the fender and 145 down between the muffler and the ground (all on the sidewall of the tire) The heat from the muffler is to much for that wheel, that header being part of the muffler makes that thing get super super hot. I guess something could be wrong with my engine causing excessive heat, but it runs great.
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Re: More on HOT wheel honda

Post by Bear 45/70 »

Too lean makes them run great AND hot, but not for long. How hot is the header and muffler?
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Re: More on HOT wheel honda

Post by Haskill »

the header is running in the 280's but the muffler has gotten to 600 at the hottest point, which is also at the top, or highest point of the muff. The average overall temp of the muffler after a run @ 300-400 deg. Does that seem about right?
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Re: More on HOT wheel honda

Post by Bear 45/70 »

Haskill wrote:the header is running in the 280's but the muffler has gotten to 600 at the hottest point, which is also at the top, or highest point of the muff. The average overall temp of the muffler after a run @ 300-400 deg. Does that seem about right?
300° would be fine. 400° however indicates a lean burning engine.
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Re: More on HOT wheel honda

Post by THE_SHRUB »

ya 600 is on the hot side, I would say clean the carbs if you haven't already, also try and adjust the valve clearance, other than that I would begin checking the radiator, try and flush the rad with prestone rad flush and put fresh fluid in. If this all fails, you may want to consider taking it into a dealer because there def. is something wrong with bike if you can smell burning tire. The ONLY other thing I can personally think of is that maybe the tire came from a bad batch and the friction (too soft of compound) and is heating up to an intense degree, but that wouldn't really explain the super-hot exhaust.
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Re: More on HOT wheel honda

Post by piletones »

Can I determine by the plug color if its running lean? It looks perfect with a grey/brown tint.

The temp gauge stays in the middle to a little above middle and I have flushed the rad recently.

Also worth mentioning is I get the poof out of the exhaust every time I shut off the engine. I had treated it by spraying sea foam in the carb because I had read that the poof was caused from carbon build up. Got lots of smoke, but it still acts the same. I've also done the sea foam in the gas for 2 tanks. Could a carbon buildup cause it to run hot?
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