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Post  jjtjr on Sun 05 Mar 2017, 9:59 pm

After much steaming here in florida, I found that  water consumption is greater then predicted. What the problem seems to be is there is no superheat on our boilers. A friend here has a stanley and confirmed the problem. He also showed me a superheater design for our derr boilers. It uses 10' 0f  3/4"" by sch 80  pipe and will be mounted at the bottom of the tube nest closest to the burner. This will give the required superheat. I will be building it this spring and posting photos.


Last edited by jjtjr on Mon 07 Aug 2017, 1:31 am; edited 1 time in total
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Post  jjtjr on Wed 22 Mar 2017, 1:22 pm

does anyone know the series of steel used in our boilers. Need to know for superheater. dean can have the info.
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Post  jjtjr on Sun 28 Oct 2018, 1:34 am

Got around to making a super heater for the Derr boiler that's in our cars. It is made from sch 80 pipe and sch 80 weldable 90 des and 180 degs fittings. not quite finished yet. When finished it will 8 feet long and will be mounted below the tube nest so the burner flame will strike it. It is TIG welded using 7018 filler rod. The pipe used is 1/2".
              superheater 20181011
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Post  jjtjr on Wed 31 Oct 2018, 11:14 am

this is a good discussion on the building of super heater

https://steamautomobile.com:8443/ForuM/read.php?1,27985
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Post  jjtjr on Tue 06 Nov 2018, 2:48 pm

almost done





superheater Img_1513
superheater Img_1514
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Post  jjtjr on Mon 20 May 2019, 12:16 pm

New photos of super heater. also new SS boiler housing. The old one was badly rusted ,distorted and burnt. The boiler is upside down to show the super heater. When in the car, the super heater will be next to the burner flame.
The super heater is clamped to the tubes to prevent it from moving around when its hot. It was TIG welded with 7018 wire. The boiler housing was redesign so the  access covers can be removed from the bottom without removal from the car, to service and clean boiler The boiler housing is bolted together with 1/4"-20 hex heads bolts. No sheet metal screws.This was done because the boiler housing carries the weight of the boiler.  

 superheater 20190414superheater 20190415
superheater 20190416


Last edited by jjtjr on Mon 22 Jul 2019, 1:29 pm; edited 2 times in total
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Post  jjtjr on Sun 16 Jun 2019, 11:11 am

cleaning the boiler  you can see the super heater mounted    
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Post  jjtjr on Mon 22 Jul 2019, 1:18 pm

The boiler rework is going well, a bit slower then I would like. The new SS housing is finished, it is bolted together using 1/4"-20 machine screws with lock washers, the super heater is installed, 1" thick insulation board is installed using SS 1/4" wire mesh to hold it in place. A new deflecting 1/4" SS baffle was installed and bolted to the welded one. The old sheet metal one was very badly burnt. Haven't cut the exhaust opening in the housing yet, the boiler will be placed in the car then the location will be determined at that time as to where the best place will be for it so it will not interfere with anything below. All the valves, both check and shutoff are going to be replaced  with SS ones found   that are good for 1000 psi. the problem with the old ones is that there were only rated for 125 psi and would not shut off  easy. all pipe and valves before the shut off valves and check should be sch 80 after the valve some guys use sch 40. superheater 20190713superheater 20190714superheater 20190715superheater 20190716
superheater 20190717


Last edited by jjtjr on Tue 23 Jul 2019, 12:35 am; edited 1 time in total
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Post  Goliewogs on Mon 22 Jul 2019, 5:50 pm

Hi, Looks very interesting! I am building a mk2 Lykamobile and no provision has ben provided by STW to shut the burner off in the event of  (an un-noticed) low boiler water level arising! I understand that you have already designed such a circuit that I can build and install which would take care of this situation. Please could you let me have a copy of that circuit diagram (I assume it is good for 'go' and works!)? I will be happy to pay you for the information if required!?
Many thanks
Kind regards
Greg Powell (Goliewogs)

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Post  jjtjr on Tue 23 Jul 2019, 12:42 am

yes, I could send you the info to build it. but it may be easier if I build it for you since I have the etched  board and all the components. it up to you. The board fits into the same housing. I haven't seen the new lika yet is it the same control as the old one.
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Post  Goliewogs on Tue 23 Jul 2019, 11:17 am

Hi jjtjr, Sorry,I don't know your name yet! Anyway, many thanks for responding to my query and, if I may, I would like to take you up on your kind offer of building a circuit board for me please! From what I have read, the board will provide other functions as well (?) other than just boiler low water level. However, all I need is just burner shutoff in the event of boiler water low. The new mk2 Lykamobile is a Firetube boiler and also the electrics have been radically simplified since the mk1 For example, there is now no nice little Brass 'console' with a key in it - it is now just a plastic affair which sits under the floor but at least it does tell you the state of the batteries (Only!). There is now provision for tank water levels - there will only be a simple clear tube running up the side of the tanks to give a visual state of remaining water. But, there is going to be a sight glass to give a visual indication on the state of the boiler level - to me this is insufficient!! As yet I am not sure if there will be a steam "manifold" as such as there was in the mk1 - in any case there must be something that can be modified to have a "probe" inserted for your electronics! So, and I dont mind doing this, your electronics will have to be installed in a separate little box all of its own I think - no problem!

So, yes I would be grateful if you could produce this for me, with circuit diagram and installation guide - also please could you give me some idea of the cost! Lookforward to hearing from you
Many thanks and kindest regards

Greg

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Post  jjtjr on Tue 23 Jul 2019, 6:17 pm

Hi Greg, My name is Jim trotta, I'm a B.S. E.E   retired. I designed the  new board because the original one was not the best.  The new one has some extra circuits that will shut off the burner in the event of low water and also has a automatic bypass for high water to prevent from over filling the boiler. You can use the manual bypass if you like but I found that I never used it, I just let the circuit control the water level. As in the original board the new one has a battery level indicator which is four LED's  that reads voltage  and displays it as  
Full, ( green )
3/4  ( green )
1/2  ( yellow )
1/4  ( red )

In total there are three vertical  rows of LEDS indicators  
Battery
water tank level
boiler level
also a red led light flashes when you are low on fuel.

They  measure the same levels as above

I  also redesign the boiler manifold  I can send you a photo.

The price for the board is $120.00  USD   plus shipping. I also include the drawings and extra chips and detail instruction on the set up. I will need to see the wiring of your car. The board was made as a direct replacement for the model 1 lika. I've been using it since  2010, also there are quite of other guys using the new board. If you look at  link below

If you go to this link you will what all of us did to our lika over the years

https://groups.yahoo.com/neo/groups/Likamobile/info  

I posted changes that I made and still making. Look in the photo section

Its best if you e mail me directly at jjtjr@yahoo.com   it would be faster.
I have more photos will send from my home computer
I've learned a lot over the years driving the car and made changes to improve the design.
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Post  jjtjr on Tue 30 Jul 2019, 12:44 pm

Here are some photos of a new manifold that I made from sch 80 pipe welded with 7018 rod to replace the old type
The sensors are now vertical.

superheater 20190724superheater 20190725superheater 20190726superheater 20190727
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superheater Empty boiler

Post  jjtjr on Tue 27 Aug 2019, 12:19 pm

The boiler is going back into car. Had to relocate a few items to make everything fitsuperheater 20190810
superheater 20190812
superheater 20190811
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