Temp Guages, Space Insulation tachome... Log Out | Topics | Search
Moderators | Edit Profile

BNO BBS - BNO's Bulletin Board System » THE ARCHIVES » Year 2002 » July 2002 » Temp Guages, Space Insulation tachometers and Moving Walls, OH MY! « Previous Next »

Author Message
CoryDane RTSIIIL (4.17.253.108)

Rating: N/A
Votes: 0 (Vote!)

Posted on Saturday, July 20, 2002 - 10:35 am:   

Hello ya'All
I have four items I need an answer to, and I think it has been on the threads before (sorry) but I am either apporaching this part of the project or already have dived into it.

What kind of Engine Temp gauges do I need to get. My RTSii has an 8V71N engine. Where does the sensor get installed? I have gone over the manual but it seems unclear.

Menards selling a "space insulation" that is supposed to have a great R rating, it is some kind of fabric material sandwhiced by a silver metallic cover on both sides. It has become EXTREMELY popular in the area with all who use it RAVING about how great it is, about 1/4" thick with a 12 R rating. what can you tell me about this.

I have the flowScan that FF mentioned in his DREAMCHRISTMAS thread. This is a wonderful piece of electronics. It includes a tach, which requires a motor like sender unit. Again, the manual isn't clear, or it isn't screaming at me or I dont understand. Where does this sender get attached? The sender is tiny, cylindrical, about 1 1/2" diam, 2 or 3" long with a 3/16" shaft. There is a pully at the front of the engine, (unused on my engine), does this pully turn actual RPMs so should I attach here I would see proper RPMS on the meter?

Last and not least, and there was a thread about this.
The talk was of moving walls, about the bus stretching, or getting taller, when the bus metal heats up, the wall material stayed the same size, not stretching with the roof as it grew higher. I WAS going to attach my walls top and bottom with screws but now I am wondering If I have to attach metal brackets to allow the wood to slip as the bus metal heats up. Anybody remember the thread and how the best way for attaching the wall top and bottom (or even sides for that matter). I am using a light wood for structural, using the strength of the wall plywood to form a strong wall, stretching could possibly tear this apart, and I don't have time to redo a lot of walls.

As Always, my appreciation for your help for us who have the questions. Thankyou again - cd
jmaxwell (66.42.92.9)

Rating: N/A
Votes: 0 (Vote!)

Posted on Saturday, July 20, 2002 - 2:03 pm:   

Cory: I have heard of the cloth stuff under the name "solar cloth" and I know people who are using it as window liners and swear by it. IMHO, many of the insulation products we come across have some grossly exagerated values that are not substantiated by anymore than a test that some guy performed in his garage one evening. But there are some new space age materials out there that far outperform the traditional materials of glass or foam. I have used the ceramic fiber mat in isolated spots (lined the inside of the cabinets for my ceramic catalyst space heaters) 1/8th" thick and it does the intended job very well but at 2.25 sq.ft., it ain't for the entire bus.
The temp sensors are usually found in the thermostat wells on most DD. Usually 3 of them--Front guage, rear guage, and alarm and shut-down. Thermostat wells are located in a cast housing on the front of the head, usually rt. side looking at front of engine. You will have the same well on the left head and many install a temp guage on both sides. On my 6v92, the stats are in a central manifold casting between the two heads, along with all the sensors. On my new bus w/8v92DDEC they are rt. head located.
I know nothing of the flowscan, so I'll stay away from your tack sensor p/u location except to say that they often p/u off the cam shafts or flywheel, the "tooth counter type". My VDO electronic picks up on the relay terminal of the 300 amp alternator. Yes, the pulley u refer to is a 1/1 rpm.
As for the walls, I think the expansion issue is grossly exaggerated. True, every material has different coefficient of expansion qualities but not to the extent that u are going to get 1/2" gaps. It is true that some of your older cheapy one piece fiberglass sided MH had a problem with it, I have not seen a bus that suffers from it. My cross-walls are Hemp Fir framed and screwed in sides, top, and bottom and they don't get gaps, nor have they broken in 5 yrs. I am familiar with a 35' RTS that is plywood cross divided w/3/4" and screwed to anchored framing strips and he has no problem. The sidewalls are 1/4" ply paneling. Most finished wall edges become hidden, so allow 1/8" for floating and I see no problem. What ends up exposed gets trim, the rest has cabinets and such covering the intersection with ceiling, floor, side walls. Just don't jam the stuff in too tightly and u won't have a problem.
Henry R. Bergman, Jr. (Henryofcj) (63.224.197.10)

Rating: N/A
Votes: 0 (Vote!)

Posted on Saturday, July 20, 2002 - 4:26 pm:   

Hello Cory;
The insulation stuff you alluded to is available, I have found, by at least two (2) different manufactures and their products are nearly the same.

One is called Reflextix (SP?) and is like you say. This stuff is about one quarter to five sixteenths inch thick, fire proof and very light weight.

The other is called EZ White and is about the same thickness made by another outfit. The R values are about the same but...

A little lower than you said. The literature I have somewhere is that the vertical R value is around 7, the side value (can not spell horizional?) is 6 and one half, and the bottom value around 6.

It is available by both manufactures as either foil backed both sides or as a one side foil and the other side white. The middle is closed cell plastic stuff.

I may use this stuff as a "three for one". One for insulating, one for padding the overhead against my head and the third for a possible finish ceiling color.

I am going to give you my E-mail address, contact me if you want and I will E-mail a name and phone number of the west coast supplier. They give out free samples. Good luck

henryofcj@hotmail.com
George Myers (12.85.14.49)

Rating: N/A
Votes: 0 (Vote!)

Posted on Saturday, July 20, 2002 - 9:42 pm:   

When looking at the hype for insulation, be very careful when you read it. If it gives an R value in a ceiling, it is the RV value for the entire ceiling, not just the insulation, and includes the rest of the material and the air spaces. The same is true for walls etc.

Add Your Message Here
Posting is currently disabled in this topic. Contact your discussion moderator for more information.

Topics | Last Day | Last Week | Tree View | Search | Help/Instructions | Program Credits Administration