Search found 209 matches

by Trevor
Sun Nov 27, 2016 2:46 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Sterling Diaphragm Engine
Replies: 97
Views: 38821

Re: Sterling Diaphragm Engine

I have used ceramic heat brick 30mm thick just before the cooling tubes. You can see the white brick sitting under the red top plate, however, you may be right about the ceramic fibre wrapped around the heater box though. Something I never thought of. I have just returned from the shed and cut it al...
by Trevor
Sat Nov 26, 2016 6:01 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Sterling Diaphragm Engine
Replies: 97
Views: 38821

Re: Sterling Diaphragm Engine

Thanks Thanh - Some changes will need to be made. The alloy top plate gets too hot from the fire box, so, I am going to take the fire box apart and try and make the heat disperse away from the top plate as it also effects the radiator as well.
Trev
by Trevor
Fri Nov 25, 2016 6:54 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Sterling Diaphragm Engine
Replies: 97
Views: 38821

Re: Sterling Diaphragm Engine

Hi all - Below is the photos of the finished engine. You will notice the methylated spirit burner is a red flame. This is due to me adding 35% water to the mix which makes the burner run cooler and cleaner :geek: . From my original idea of having the generator running the pump and fan worked OK, but...
by Trevor
Fri Nov 25, 2016 6:29 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Sterling Diaphragm Engine
Replies: 97
Views: 38821

Re: Sterling Diaphragm Engine

Thanks Ian - I found that out the hard way and the larger flywheel certainly made the difference. As you said, the aluminium flywheel was actually lighter in weight. Thanks for your help again - My next post will show the engine running, however, I had to remove my generator as I found the radiator ...
by Trevor
Thu Nov 24, 2016 3:00 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Sterling Diaphragm Engine
Replies: 97
Views: 38821

Re: Sterling Diaphragm Engine

Hey! thanks for that Ian! That looks a lot better idea than what I was trying to do. Putting the damn thing in the lathe and hitting in places to get it straight - Got there though. Thanks mate, really appreciate the help.
Trev
by Trevor
Thu Nov 24, 2016 2:57 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Sterling Diaphragm Engine
Replies: 97
Views: 38821

Re: Sterling Diaphragm Engine

I have just fired up my Diaphragm engine for the first time today - After 30 seconds of heat the engine started to turn. Whoopeeee!!!! I am stoked. With the heat turned up to moderate I had the engine spinning over at 1100 rpm. Hardly any noise except for the water pump as it is gear driven and sinc...
by Trevor
Tue Nov 22, 2016 3:18 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Help me !!!
Replies: 7
Views: 4580

Re: Help me !!!

Sorry Masaruneema - The message is for Thanh-cuibap
Trev
by Trevor
Tue Nov 22, 2016 3:06 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: My stirling engine !
Replies: 2
Views: 2466

Re: My stirling engine !

Wow! You certainly have the knack for making a lathe. Very impressive - Damn well made and congratulations on the small hot air engine you have made in aluminium. Just killed my remarks to Masaruneema Hee! Hee! At least he will be able to see that alloy does work in these small engines.
Trev
by Trevor
Tue Nov 22, 2016 3:02 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Help me !!!
Replies: 7
Views: 4580

Re: Help me !!!

High Masaruneema. Ian knows a lot and seems to be the guru here, however, I have built a few small candle and spirit burner hot air engines over time in aluminium and they do work with small flames as candles. Ian is right when using alloy as the heat does travel up the displacer tube very quickly a...
by Trevor
Tue Nov 22, 2016 2:56 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Sterling Diaphragm Engine
Replies: 97
Views: 38821

Re: Sterling Diaphragm Engine

Have just finished the crankshaft and fitted the bearing blocks into their seats. Don't let anyone tell you that crankshafts are easy to make - THEY AREN'T :wink: I had a hell of a time getting it straight after silver soldering it. I think there was to many cranks. At least it is done and straight ...
by Trevor
Fri Nov 18, 2016 12:32 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Sterling Diaphragm Engine
Replies: 97
Views: 38821

Re: Sterling Diaphragm Engine

Nearly finished the radiator for the Hot air engine. Looks great and have used this idea before but only with a baby model not this large. The heat sink with its cooling fins come from an old 12VDC cooler. The fan runs on 12v and draws 190ma. The generator I have for the engine puts out 12VDC at 1.3...
by Trevor
Thu Nov 17, 2016 2:43 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Sterling Diaphragm Engine
Replies: 97
Views: 38821

Re: Sterling Diaphragm Engine

Thanks Kong. I only hope it will work! I have nearly finished the radiator cooler for it and just finished readapting a gear pump for the water pump.The ratio for the drive will be 3:1 gear driven.
Trevor
by Trevor
Tue Nov 15, 2016 2:38 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Sterling Diaphragm Engine
Replies: 97
Views: 38821

Re: Sterling Diaphragm Engine

Have finished the new Displacer complete with its stainless steel wool. It seems to fit snugly in the displacer tube without too much friction.
When the brass stock arrives will then finish the crank and fire her up. Will post photos when she is running in a couple of weeks I hope.
Trevor :razz:
by Trevor
Tue Nov 15, 2016 4:10 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: A Message for Ian SC - Earthquake NZ
Replies: 3
Views: 3018

Re: A Message for Ian SC - Earthquake NZ

Nice to know you are OK Ian.
by Trevor
Mon Nov 14, 2016 10:31 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: A Message for Ian SC - Earthquake NZ
Replies: 3
Views: 3018

A Message for Ian SC - Earthquake NZ

HI Ian. I have just heard the news of a major 7.6 earthquake in your area. I hope you are OK and get this thread as I do not know if anyone else knows of this ( I hope all will respond and give you some support) as you are well known on this forum). The best to you and your family and pray that all ...