| [GMCnet] 7000 mile report [message #302854] |
Wed, 29 June 2016 21:21  |
glwgmc
Messages: 1014
Registered: June 2004
Karma: 10
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Senior Member |
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Hi all,
We are nearing the 7000 mile point on our unplanned, unscheduled Alaska adventure. We just take every day as it comes and that has really been the winning strategy for a GMC motor coach. The 78 Royale with the SandJ 455 and 3.67 effective gearing continues to impress. While the roads into and through Alaska are far lower in elevation than we expected there has been no need for second gear other than to keep speed down on some of the steepest down hill runs.
We are tonight on our way to Prince Rupert about half way down BC on the coast. We stopped a bit short of PR in a place called Terrace, BC. This coming weekend is Canada Day, similar to the US 4th of July so RV parks are quite tight.
One thing I did want to report on is to give a long term verification for the use of the stock master cylinder with the lines reversed with Manny's six wheel reaction arm disk brake system. Since installing this six wheel disk system on the Royale when it first became available, I have been questioning the pedal height using the stock master cylinder. Going to a larger MC means loosing pressure and perhaps needing to modify the ds front hood which I did not want.
At a recent GMCMI rally, Dave Lenze showed how the stock mc had enough piston throw and piston capacity to properly power the four rear calipers IF the lines on the mc were REVERSED. And, once the lines were reversed there would also be enough capacity and throw to power the front calipers on the one ton front end as well. The only issue would be keeping the fluid reservoirs full as they would not have enough capacity as the pads wore down.
When we returned from that rally I reversed the lines on the Royale mc and it has worked flawlessly on this trip. The pedal is still a bit lower at engagement than I would like but I can probably address that with a slightly longer push rod. The six wheel reaction arm brakes have been tested on steep downhills and a couple of unplanned panic stops. In all cases the outcome was really impressive. So, I have no reservation recommending this setup.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed & hand crafted
in the 1907 former Masonic Temple building
in historic Kerby, OR
http://jerrywork.com
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Jerry & Sharon Work
78 Royale
Kerby, OR
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| Re: [GMCnet] 7000 mile report [message #302860 is a reply to message #302854] |
Thu, 30 June 2016 01:15  |
cbryan
Messages: 451
Registered: May 2012
Location: Ennis, Texas
Karma: 3
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Senior Member |
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Jerry,
Great report. Happy Canada Day to all the Canadians. And Canadiens, too. Very interesting about the MC and how it works with reversed lines.
May the end of the trip be trouble free.
Carey
Carey from Ennis, Texas
78 Royale, 500 Cadillac, Rance Baxter EFI.
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