VoyForums
[ Show ]
Support VoyForums
[ Shrink ]
VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

05 /19/ 26, 3:03pmLogin ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 12345678[9]10 ]
Subject: Re: Rear end ratio


Author:
Bob Dilks
[ Next Thread | Previous Thread | Next Message | Previous Message ]
Date Posted: 08/ 10/ 01, 7:13am
In reply to: Lee Howard 's message, "Rear end ratio" on 08/ 9/ 01, 8:40am

Lee: I think it is difficult to fault the original Blue Bird engineering even if you do live on the costal plain with no mountains - remember, you may mant to sell the bird one day to someone in West Virginia. To make sure you get all the information to make a good decision, start by calling Butch Bennett, factory service manage at 800/992-6337. If he can't answer your questions he probably can pass you on to an engineer to explain why Blue Bird used a low gear ratio in the first place.

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Replies:
[> Subject: Re: Rear end ratio


Author:
Jeff
[ Edit | View ]

Date Posted: 08/ 10/ 01, 9:05am

Lee:
I would side with the 4.33:1 ratio as your '79 is a lighter coach than the later air-ride coaches, and probably will do well in flat to rolling terrain and possibly improve fuel mileage, noise level, and engine wear. In addition, I would ask the folks at your Cat dealer about turning up the governor to 3000rpm (although the 250hp was originally 2650 I believe) as the 2800rpm limit will reduce power long before 2800rpm. This new limit will allow use of lower gears for climbing and will make up for your higher final drive ratio.
I believe one reason for the early low gearing was the 55mph speed limit at the time.

- Jeff

[ Post a Reply to This Message ]



Post a message:
This forum requires an account to post.
[ Create Account ]
[ Login ]
[ Contact Forum Admin ]



Forum timezone: GMT-8
VF Version: 3.00b, ConfDB:
Before posting please read our privacy policy.
VoyForums(tm) is a Free Service from Voyager Info-Systems.
Copyright © 1998-2019 Voyager Info-Systems. All Rights Reserved.