making some sort of heat blow the screen....options?

I tried looking through the kit car suppliers for options but everything relies upon water, the little fan heaters are not great and had a quick look on line thinking about electric vehicles (how do they do it).

Heating of electric vehicles

In cold climates considerable energy is needed to heat the interior of a vehicle and to defrost the windows. With internal combustion engines, this heat already exists from the combustion process from the waste heat from the engine cooling circuit and this offsets the greenhouse gases' external costs. If this is done with battery electric vehicles, this will require extra energy from the vehicles' batteries. Although some heat could be harvested from the motor(s) and battery, due to their greater efficiency there is not as much waste heat available as from a combustion engine.

However, for vehicles which are connected to the grid, battery electric vehicles can be preheated, or cooled, and need little or no energy from the battery, especially for short trips.

Newer designs are focused on using super-insulated cabins which can heat the vehicle using the body heat of the passengers. This is not enough, however, in colder climates as a driver delivers only about 100 W of heating power. A reversible AC-system, cooling the cabin during summer and heating it during winter, seems to be the most practical and promising way of solving the thermal management of the EV. Ricardo Arboix introduced (2008) a new concept based on the principle of combining the thermal-management of the EV-battery with the thermal-management of the cabin using a reversible AC-system. This is done by adding a third heat-exchanger, thermally connected with the battery-core, to the traditional heat pump/air conditioning system used in previous EV-models like the GM EV1 and Toyota RAV4 EV. The concept has proven to bring several benefits, such as prolonging the life-span of the battery as well as improving the performance and overall energy-efficiency of the EV.

Doesn't really help but thought I would put 2 constructive pence worth in.

 

you could always eat lots of beans, and then light your farts...

 

shame my mrs don't use the van, the amount of jeffin hot air she spouts.

 

As a doctor i feel it is my duty to warn you of the dangers of reheating poo

On second thoughts ,it might be fun to see the poo bus in full pong

 

The only thing that I have found is on the air intake before filter on a single carb model.

 

I just got a full system in one of the US buses, all stripped and boxed and covered in oil, which has nicely preserved the heater boxes. I priced up what i've got and its a whacking £600 off heritage! I'll get around to fitting this all in the next few weeks and look forward to having heat in my van for the first time (other than the propex I had)

 

k+ stevesplatto for the link to heating explained....i'll read it fully tonight.

 

Engine stat on a type 4 engine lives under the r/h cylinders its like a concertina that expands when hot, and in doing so releases (lengthens) a cable which runs round a pulley and up to the topside of the engine the end of this cable is attached to a spring loaded pair of flaps which are in the small humps in front of the fan casing so the expanded stat allows the springs to open the flaps, the springs also act as a failsafe in that if the cable snaps the flaps spring open so you don't cook your engine.

Nothing to do with the heating though other than it allows the engine to warm up quicker.

 

Did you ever sort the missing lower tin?

 

Thinking about it, If I had a T4 engined bus (parts expensive) with no heat exchangers or any heating pipes I'd find an alternative. To reinstall it all will be as expensive as a new propex, and you can use that for chilly amping as well.

HX's x 2
Riser pipes x 2
Control pod x 2
Corrugated pipes x 2
Heater cables x 2
Y-piece - no idea what you'd do.
If you had propex under the back seat you wouldn't need any of that ^. and not needing any of that would pay for the propex.

Mr. Splatto's doing this, but he's got his pipework I think.

 

One of my buddy's has what looks like a hair dryer (12 volt) under the dash spliced into the heat tube from under the bus. He flicks the switch and the blower draws cool air from the "heat tubes" and heats it with the circular element inside the "dryer" type thing and plows it up to the windscreen. Works great to keep windscreen clear, but not enough for him to ride without his coat. I have not seen another one, but he says he sees them from time to time on "fleebay"!!! ....just a thought!