| Author |
Message |
David (Davidinwilmnc)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 20, 2006 - 8:50 am: | |
My MC-8 has extremely noisy driver's HVAC blowers. I assume that they're original, but have no real way of knowing. At the moment, only one is hooked up, as the blower wheel is jammed down on the shaft against the motor on the other. They sound like a couple of noisy hair dryers up on the dash. I can't imagine how bad having both blowers on would be. Are they all this noisy? If so, what (if anything) have you guys done to make them a bit quieter? Thanks for any suggestions/ comments.
David |
John MC9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 20, 2006 - 9:11 am: | |
They move a lot of air, so expect more noise than a car or
truck... it's a big windshield.. If you pull the motors out,
replace the brushes, bearings if needed, and oil 'em up,
you may reduce some of the motor noise, but the wind
noise will still be there.
You can also get the numbers off the motors, and call
Grainger to order new motors.... |
Kevin Hatch
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 20, 2006 - 9:27 am: | |
My house heat blowers are real noisy on my 4905. They really feel like the squirrel cages are out of balance. |
John MC9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 20, 2006 - 9:35 am: | |
If you saw the dirt, hair and unidentifiable crud inside the
ductwork, you wouldn't be turning on that fan at all.
I swear Saddam used some of that stuff on the Kurds... |
Marc Bourget
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 20, 2006 - 9:40 am: | |
Might consider cleaning off the blower cages.
Crud that builds up on the blades may cause noise by "beating" the air rather than "flowing".
It would give you a chance to re-mount the second blower so it doesn't drag. That'd be preferrable to having one side frosted up when you need it.
Finally, if your defroster does not incorporate the driver air conditioning into the defroster loop, consider adding it. It acts to remove the moisture from the heated air, thus actually "defrosting" by removing moisture from the environment. |
David (Davidinwilmnc)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 20, 2006 - 9:48 am: | |
The blower cages are pretty clean... maybe just a small amount of dust. The noise reminds me of the dash-mount fan that blows on the driver. Maybe it's just the nature of DC motors (but car blower motors sure are quiet). Actually, I removed and blocked off the 2nd blower do it wouldn't drag. The one still blows a lot of air. A/C is part of the defrost. I wonder why MCI didn't but any dedicated vents for the driver's face. That cold air on the windshield causes condensation on the outside in the summer, especially at night. I'll probably add some adjustable louvered vents to help that. |
Marc Bourget
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 20, 2006 - 1:25 pm: | |
I've wondered about picking up a vacuum or electric powered controller out of the dash of a car or light truck to provide dash control like modern cars, Defrost, mid and floor level or combinations with a temp control. |
JW Smythe (Jwsmythe)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 20, 2006 - 1:39 pm: | |
> If you saw the dirt, hair and unidentifiable
> crud inside the ductwork, you wouldn't be
> turning on that fan at all.
>
>I swear Saddam used some of that stuff on the
> Kurds...
John,
no shit.. we pulled the ducts out of the '82 RTS I just got. It was absolutely disgusting. It was solid black inside. It wasn't a light dusting either. I've spent hours basically laying inside engine compartments, and not came out this dirty.
I'm *REALLY* glad I opted to pull everything on the interior out. If I had found this out later, we'd be pulling everything apart again.
I don't know how it is on the MCI's, but on the RTS's, there are two large outlets in the back, that blow along the roof on each side. Along the length of the bus, just above the window there are silver dollar sized holes, that the air blows through. There's nothing inside to filter or really even obstruct the airflow. It wasn't really designed to be cleaned. We did a good bit of demolition work getting that far.
I don't know how people don't get really sick riding buses. Then again, how many people get the air ducts in their houses cleaned on a regular basis? |
truthhunter@shaw.ca
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 20, 2006 - 3:46 pm: | |
AQUIRED IMNUNITY, just like someone that works at a dump, pumps black gold , work's in a hospital or pick's up the dead. I use to wounder about such marvels of health, know I know and so do you . Ain't nature's adaptability remarkable? |
Ed/Jefferson bus
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 20, 2006 - 4:29 pm: | |
Check your brushes in the motors,also check how
smooth the commutater is on the armature of the motors.You also have 2 small bearings in those motors |
John MC9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, March 20, 2006 - 8:18 pm: | |
Airplanes, city skyscrapers, malls, etc., are no different.
And they're worried about bird flu? It's amazing we don't kill
the bird's flu, with the germs we produce in total abandonment.
</cough> |