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Another tire pressure point of view
Yahoo Message Number: 47868
Another point of view on wheel & tire equipment.......
 I elected to install Doran Pressure Pro on standard stems to monitor my tire pressures.  The Doran system uses large, pressure sensing valve stem caps (I think about 2/3 oz each) and transmits tire pressure to a dashboard monitor when in motion.  The monitor alarms at 12.5% pressure reduction and again at 25% reduction.  I can monitor tire pressure at any time for each tire and check pressure at any speed.  Takes less than a minute.

Down side is that the caps are large and more difficult to install and remove if installed with standard stems and may require extra support if used with "special", longer stems.  Price is over $400 for 6 tires.  Peace of mind = priceless.
 There are other monitor systems on the market, some go in tire, some only indicate normal or low pressure and some cheaper.
 Something else to consider is that you can put them on anytime if you can get to valve stems and are of nimble fingers.
Re: [Life With A Lazy Daze RV] Another tire pressure point of view
Reply #1 –
Yahoo Message Number: 47896
(snip) . . .  I elected to install Doran Pressure Pro on standard stems to monitor my tire pressures. . . . The monitor alarms at 12.5% pressure reduction and again at 25% reduction. I can monitor tire pressure at any time for each tire . . .

Biker06365, I read about these several years ago and have been intrigued. I'm glad to know someone who actually has them. I hope some others here will post their opinions - there seem to be a couple of different types. I'm interested.

Sarah

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Re: Another tire pressure point of view
Reply #2 –
Yahoo Message Number: 47900
Quote
Down side is that the caps are large and more difficult to install and remove if installed with standard stems and may require extra support if used with "special", longer stems.  Price is over $400 for 6 tires.  Peace of mind = priceless.
What stems did you install them on?  I've thought about trying their 10 wheel system (RV+toad).  We've got the Tireman custom stems in the rear.  RV front and toad are the standard rubber stems.  Do the installation instructions say anything about rubber stems?

Art
Art and Barbara
Settled in Atterdag Village of Solvang
2015-2022 fulltime in a 2016 Tiffin Allegro Bus 37AP
2002-2015 2002 LD MB
Art's blog
Re: Another tire pressure point of view - DORAN monitor system
Reply #3 –
Yahoo Message Number: 47903
--- In lifewithalazydazerv@yahoogroups.com, older_fossil

Quote
What stems did you install them on?  I've thought about trying their 10 wheel system (RV+toad).  We've got the Tireman custom stems in the rear.  RV front and toad are the standard rubber stems.  Do the installation instructions say anything about rubber stems?

Art
Art,

Here is a link to the Doran website:
 http://www.doranmfg.com/rvtirepressuremonitors.htm

If that does not answer your question, maybe a call to their customer service number would.
Someplace on their website is a picture of is a picture of the sending unit which goes on the valve stem.
It looks to be about the size of a small lime and weighs a few ounces.  I think they said the weight is low enough so that wheel balance is not affected.

Some things I was wondering about the system:
1) Do you set it for your correct tire pressure for when your tires  are cold?
2) Is the reading you see on the monitor the actual tire pressure  when your tires are hot or is it converted to the equivalent tire  pressure as if your tires were cold?
3) Does the unit press down on your Schrader valve all the time or
 only when taking a pressure reading?   (my guess would be all the time.)

Ken of Ken, Patty, and daughter Stephaine in San Diego.
 
Re: Another tire pressure point of view - DORAN monitor system
Reply #4 –
Yahoo Message Number: 47918
Art & Ken

I have 2" short metal stems with rubber bases, hence the stated difficulty removing them to pressurize rear tires.  Doran literature recommends inspecting stems for "age and condition" and "recommends rigid stems when posssible".

The transmitters are 2/3 oz, according to instructions, and are the size of a lug nut.  They monitor pressure all the time, with the set point being at the time they are installed.  Instructions recommend soaping stems when installed to verify leaktight.  A very small amount of air is lost when screwing them on.  They do not compensate for temperature, but display actual pressure at the time, so pressure rises as tires heat up.  If they are removed for a minute or more, they have a new set point when re-installed; they are programmed to identify wheel location by a fairly simple programing process (simple after the first time you do it).  Phil, at Doran has answered my questions completely and helped me through the programming process (the last unit installed is a little tricky).
 The transmitters only transmit when moving, conserving battery life, which is reported to be 3 yrs or so, then a $10?? fee to replace battery.  Maybe a lot for a small battery, but cheap enough for the info they provide.  So you need to move your LD to activate transmitter and check tire pressure.

Yes, 12.5% is quite a bit, but it is probably less than the recommended tire pressure for the load plus 10 psi or so for margin.
12.5% times 80 psig is 9.6 psi and I'd much rather know what it is than not.  A push of the up/down buttons on the monitor displays actual pressure and takes a minute to check them all, even at 70 mph.

Frank


snip....> > What stems did you install them on?  I've thought about trying