No, takes way longer to heat..Why Dan? Isn't the diesel supposed to run hotter?
Nor did Steamway before them. In each case the hydraulic debacles nearly undid both companies.Hydraulics are proven in many vehicle applications too, if properly designed with the right components. Prochem didn't get it right.
Absolutely agree. Hydraulic, Electric, even robust clutch drives aren't trivial, although each may have different details.However the devil is in the details
Can you get a 20 hp electric motor with 3000 rpm? Direct drive?Mechanical to generator, electric to motor, motor to (gasp)pulleys and belts that drive components.
Rick, I believe you lose 20-25 percent each time you do a conversion (rotational to electricity in the genny, electric to rotational in the motor ). I would not consider that exceptionally efficient.As I understand it, there is very little efficiency loss converting the energy of the motor to electricity and then using electric motors for the blower and an electric pump.
I'm considering buying another CDS right now, but with things changing, I think I may fix up the old van and wait another year.
I should have said direct drive so as not to confuse all you literalists out there.Why not another cleanco???
Rick, I believe you lose 20-25 percent each time you do a conversion (rotational to electricity in the genny, electric to rotational in the motor ). I would not consider that exceptionally efficient.
Why not just pipe it through another HX and capture it that wayif it's not feasible to put drive shafts in the new vans, maybe we will see the rebirth of hydraulic systems. Instead of a generator running off the engine, you have a hydraulic pump. You run the hoses under the van (no holes in cabin) and attach them to fittings leading to the hydraulic motor on the cleaning unit. Still using the vans engine for heat. The problem with the old hydraulic units is often the hydraulic fluid would over heat. Just need a larger reservoir and maybe running a coolant exchange thru the water box.
could be doneWhy not just pipe it through another HX and capture it that way![]()
Using locomotives as an example is a best case scenario. Very large motors purpose-built for an application can be made more efficient, and this specialized industry has been optimizing their setup for many decades. Electric or hybrid vehicles have literally billions of research dollars behind them to maximize efficiency. I can't imagine Hydramaster has the resources or the time to optimize their setup to that extent, and I imagine their main concern would be more towards reliability and longevity anyway.
You won't find a lot of information on conversion efficiency because there are so many variables. Electric motor's efficiency varies hugely with load - a motor loaded to 40% of its nameplate capacity will be very inefficient compared to one loaded to 80%. Power factor plays a part too. Lee's comment about the details is spot on.
My blanket comment was kind of silly now that I think about it, as the true numbers will vary widely depending on many things.
One thing I'm having trouble understanding is, why did they choose a CDS to go electric, when it's designed to be hooked up to the van's engine. Why didn't they choose to use a slide in to be designed as electric?
Is the van's engine going at a much lower RPM or is it completely shut off?
I haven't seen any videos or how this is operated.
Todd, according to the teaser, the xDrive uses the GD 408 Triflow, rated 502 CFM. A 47 (or 4007 Tri-lobe) is rated about 445. Of course the exact flow of the xDrive will depend on the rpm they run the blower at. I don't know if it's being run at full speed.Is a 4.8 blower the same or similar to a #47 blower ?
Matt, I imagine the main reason would be the CDS already has the van engine coolant heat exchangers, a slide-in would have an exhaust HX plumbed locally for the slide-in engine. The whole HX arrangement would have to be changed. Also the fuel system components would have to be removed. The CDS arrangement is the starting point that requires fewer modifications.
The van engine runs during operation, turning the generator and providing heat via coolant.
Hydramaster has this video out. There aren't any videos of actual operation yet because it hasn't been released yet, and they are keeping a tight lid on until the big reveal.
Hi Joe, welcome to MB!Im not sure where this 60% more fuel than a 25 hp lawn mower engine thing comes from.. I hear it a lot.. I believe it is based on old cds tech. I can speak factually as to both.. I have a 2010 4.8 cds with salsa. I also owned a boxxer 427 that used a 27hp briggs. It used 1.6 gallons or more per hour. My cds on medium( single wand speed) uses 1.6 gallons per hour. Its reliabilty is off the charts.. I hope they can get this x drive in the same realm of reliability, because after owning 3 slide ins.. Ill never go back
That confuses me more. If the vans engine runs during operation, what's the need for a generator?