Re: Thermo Valve Conversion Kit Reply #20 – July 13, 2018, 01:51:43 am Found my 199 degree dynamatic controller on the internet from its part number in a google search for $300 from a beaver owner who had a spare by accident. Quote Selected
Re: Thermo Valve Conversion Kit Reply #21 – July 13, 2018, 08:14:10 am Quote from: Sven and Kristi – July 10, 2018, 10:02:14 pmThis is what I understand: The valve takes the place of the 2 speed electronic switch which receives input from the CPU through wiring. The pilot valve (to keep things short) is screwed into the downflow pipe from the thermostat via a "weld flange" that was welded over a hole that is drilled into the pipe. The hoses that were attached to the old valve (behind the old switch) are attached to the provided flanges. How it functions: The copper colored probe (see photo) picks up the heat from the coolant flow and causes the wax to expand, opening the lines to the hydraulic fans, allowing coolant to flow, causing fans to turn. When the engine coolant is cold that "bypass" is closed and the fans don't turn until "needed". The speed of the fans are proportional to the temp of the coolant. If someone has a more accurate explanation, I appreciate better info. What I have was explained to me by the mechanic who installed it.The manufacturer is Dynamic Limited UK and the part is made in Swindon, England. TVCK-101 "Thermo Valve Conversion Kit". In the photo, the valve is on my hitch receiver. I had it mounted inconspicuously near the radiator where the original hoses could be attached. I bought the kit from Source Engineering in Eugene, OR and K&M Mobile RV Repair up the road in Junction City installed it. Despite the name, the installer has a large professional looking shop. Most of their experience has been with Country Coach. The guys liked my Foretravel.Source Engineering Inc | Custom RV Chassis | Eugene, OR Quote Selected
Re: Thermo Valve Conversion Kit Reply #22 – July 13, 2018, 11:00:25 am Taking source engineering's info about the locked on high speed from having an incorrect hydraulic or a failed electric fan temp controller disadvantages the replacement seems required?Power and mpg loss are noticeable. System wear is expensive. Minus 65hp matches the cat literature Quote Selected
Re: Thermo Valve Conversion Kit Reply #23 – July 13, 2018, 11:53:35 am I've noticed quicker response from the engine and a significant increase in MPG in my trip from Eugene to Monterey (present location). My main reason for the switch was temperature contro and that was accomplished. I'll report back at the end of the trip when I have more miles behind me. Quote Selected
Re: Thermo Valve Conversion Kit Reply #24 – July 13, 2018, 02:11:25 pm Impressive. Do you and Bob have the same wax capsule controller now? IIRC, Bob's is a fully open at 199 degree model. Some part numbers would be great for both controllers if it's not too much trouble. Quote Selected
Re: Thermo Valve Conversion Kit Reply #25 – July 13, 2018, 04:38:55 pm My question on the wax controller, is why did Foretravel use the 180 and other MFG used the 199, could it be Foretravel did not want heat the transmission to almost 200 degrees before the retarder was engaged,as most other units do not have a retarder. Just a thought. Quote Selected
Re: Thermo Valve Conversion Kit Reply #26 – July 13, 2018, 04:47:58 pm There is no purpose in having the fan controller run at high speed until a minimum of 5 degrees F over thermostat full open temperature. PERIOD. All that does is have the fan on high/taking high HP all the time once the coolant is up to normal operating temperature. So, on a 300 mile drive, it would be on high for 280+ miles. Quote Selected
Re: Thermo Valve Conversion Kit Reply #27 – July 13, 2018, 10:49:46 pm Sven do you have a stock exhaust? Quote Selected
Re: Thermo Valve Conversion Kit Reply #28 – July 13, 2018, 11:38:28 pm Not sure if it applies to all Foretravel's, but had a sob with a ecu controlled off/low/high fan controller.Installed a vmspc and made a intake manifold temp gauge. When water temp fell below 180 f., fan shut off. Problem was that if you used a lot of throttle and increased boost pressure, manifold temps went to an unacceptable 150 f. until water temps rose enough to turn fan on again.I believe that is why some coaches, [like mine] run on low speed as soon as you start the engine. Intercooler temps will rise a lot faster that water temps, and even low speed fan will keep manifold temps down. Quote Selected
Re: Thermo Valve Conversion Kit Reply #29 – July 14, 2018, 09:02:01 am Yes, you DO need some air flow over the CAC, even if coolant temperature is low.So, yes, fan speed should be LOW- HIGH, not OFF- ON. Quote Selected
Re: Thermo Valve Conversion Kit Reply #30 – July 14, 2018, 10:24:10 am Does anyone have documentation as to maximum air intake system temp. This is all I can find.Bob Quote Selected
Re: Thermo Valve Conversion Kit Reply #31 – July 14, 2018, 10:29:30 am Quote from: Wattalife54 – July 14, 2018, 10:24:10 amDoes anyone have documentation as to maximum air intake system temp. This is all I can find.BobThat is also the max. rise that Detroit Diesel recommends the the Series 60. Quote Selected
Re: Thermo Valve Conversion Kit Reply #32 – July 18, 2018, 11:17:38 am Probably is easier on the fan motor seals and parts to run continuously as opposed to start and stop,remember the info that mostwear on a internal combustion engine occurs on startup,same would apply for these fan motors. Quote Selected
Re: Thermo Valve Conversion Kit Reply #33 – July 18, 2018, 11:39:56 am There is absolutely no comparison that can be made between an internal combustion engine and a hydraulic motor, when talking about frequent starts and stops. Quote Selected
Re: Thermo Valve Conversion Kit Reply #34 – March 25, 2019, 01:11:58 pm Installed and ran into a little issue. Temps on the valve are or was set to approx 199-200 degrees... ( I have adjusted 1/2 turn out to hopefully set it at 185 ish).Main issue. Manifold temps hit 151 degrees on a day of low 70's. pretty high.. I think I need to add the orifice fitting used to allow the fans to turn a little while moving and allow the air to move at lower speeds and lower overall temps.Sven has had his valve for a little bit and wondering if he has the Orifice fittings installed or no?Sound thinking on the movement of air in the engine area? Quote Selected
Re: Thermo Valve Conversion Kit Reply #35 – March 25, 2019, 01:14:21 pm Yes, fan needs to run on low even when coolant temperature is below threshold to provide adequate air flow through the CAC.Also, ideal temperature to cut fan speed to high is 5-7 degrees above thermostatic control. Quote Selected
Re: Thermo Valve Conversion Kit Reply #36 – March 25, 2019, 01:46:23 pm Any ideas on how many RPM I should be looking at @ low rpm? .. thinking of adding a needle valve so that it is adjustable,. Quote Selected
Re: Thermo Valve Conversion Kit Reply #37 – March 25, 2019, 02:08:15 pm Quote from: DavidS – March 25, 2019, 01:46:23 pmAny ideas on how many RPM I should be looking at @ low rpm? .. thinking of adding a needle valve so that it is adjustable,.Let your intake manifold temperatures be your guide. I would start by setting it for a max of ambient plus 20 degrees F. Also, compare intake manifold temperature on low to when it on high. Quote Selected
Re: Thermo Valve Conversion Kit Reply #38 – April 09, 2019, 06:56:13 am Does the wax controller contain parts that allow fan to run at slow speed?Chris Quote Selected
Re: Thermo Valve Conversion Kit Reply #39 – April 09, 2019, 09:13:16 am The std wax controller as far as I know is never off. Low up to 185 then ramps up to full high at 199 degrees.Almost sounds like the dynamatic controller is incorrect or defective. At least that's what Foretravel used and my replacement was from a Beaver owner with 2 of the units new so he sold me one of them My intake manifold temp is within the m11 spec of plus 30 degrees max. Quote Selected
Topic: Thermo Valve Conversion Kit