| Author |
Message |
Douglas Tappan (Dougthebonifiedbusnut)
Registered Member
Username: Dougthebonifiedbusnut
Post Number: 41
Registered: 10-2004
Posted From: 75.69.44.219
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, May 06, 2007 - 8:07 pm: | |
I just finished putting an "air dam" on my Crown. I got some convayor belt and installed it were there is a provision for a full width flap just after the radiator.This is what GM I guess did to create a low pressure area ust after the radiator. Took a trip to the Cape 150 miles round trip.Something I've done 10-15 times now. On every return the temp would reach about 190.The temp never exceeded 170. The ambeint air temp however was about 70 so I am being cautiously optimistic with the results. But for now I'm pleased with the way it seems to be working |
john w. roan (Chessie4905)
Registered Member
Username: Chessie4905
Post Number: 542
Registered: 10-2003
Posted From: 71.58.117.21
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, May 06, 2007 - 9:24 pm: | |
I believe you mean before the radiator. GM's had a flap behind rear axle, but before the radiator |
Jerry W Campbell (Jerry_w_campbell)
Registered Member
Username: Jerry_w_campbell
Post Number: 12
Registered: 7-2005
Posted From: 66.82.9.75
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, May 06, 2007 - 9:46 pm: | |
Hi Doug,
What size was the piece you put on?
Jerry
'75 Crown two axel |
Mark R. Obtinario (Cowlitzcoach)
Registered Member
Username: Cowlitzcoach
Post Number: 141
Registered: 4-2001
Posted From: 204.245.228.213
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, May 07, 2007 - 11:35 am: | |
For those of you who have mid-ship engined Crowns and Gilligs, Westcoach (westcoach.net) has the center mudflap available if you don't want to make one up.
On the mid-ship engined Crowns and Gilligs the flap was behind the radiator and before the engine.
I think because of the way the radiator is ducted, the full width flap creates a negative pressure area in the engine compartment which helps to suck air through the radiator.
More air flow equals better cooling.
I have a '79 Crown A-426-11. My full width flap got rotten and basically fell off. Since it rarely gets that hot here in the wet NW I haven't had a problem with overheating. I suppose if I ever take the bus to Wild Horse in August I would notice a difference however.
I do know that any mid-ship Crown or Gillig in school service in CA is required to have the flap in place. Why that is so I don't know.
Will a mid-ship Crown or Gillig run okay without a full width flap? Yes. Will it run better with one? Probably.
Mark O.
Castle Rock, WA |
Arthur J Griffith (Arthurseagle)
Registered Member
Username: Arthurseagle
Post Number: 25
Registered: 8-2006
Posted From: 72.236.102.155
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, May 07, 2007 - 4:40 pm: | |
I have seriously thought about putting one on
my Eagle 15, where the mud flap would be just
behind the drives, before the Rad. and Engine.
Has anyone ever tried it. Did it work well or
did it create any other problems. Comments + or -
would be greatly appreciated. THANKS Arthur |
Jack Conrad (Jackconrad)
Registered Member
Username: Jackconrad
Post Number: 567
Registered: 12-2000
Posted From: 76.1.180.218
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, May 07, 2007 - 5:15 pm: | |
Speaking of flaps, has anyone put a flap similar to those used by GM on a MC-8? If so did it make any difference? Inquiring minds want to know. Jack |
john w. roan (Chessie4905)
Registered Member
Username: Chessie4905
Post Number: 544
Registered: 10-2003
Posted From: 71.58.117.21
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, May 07, 2007 - 8:28 pm: | |
flaps can be made from conveyor belting. you may be able get a piece cheap or free from a quarry. |
Douglas Tappan (Dougthebonifiedbusnut)
Registered Member
Username: Dougthebonifiedbusnut
Post Number: 42
Registered: 10-2004
Posted From: 75.69.44.219
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, May 07, 2007 - 9:02 pm: | |
Hey Jerry,
I made it 13" by the width of the coach |