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This is day five, and I'm really tired... The DTM is not working as good as it should. its equal to stock, and has lower oil temps but thats about it....
I'm trying some drastic measures right now to see what happens. Its not good enough for me to sell at this point..
Looks like we might go back to the drawing table...
The rest of the testing is going to continue, I'm adding the GOL system next for comparison.
thank you for this post, I think this adds to your credibility because you are admitting that the current configuration is not working as well as you had hoped. I for one have full faith that you will tweak on this until it is "the best system being offered" and you will have real world data to back it up! I just wish I could help you with this R&D work, I worked on a military project where we had to try to direct airflow into a wheel well .. I know how frustrating working against an invisible enemy can be..
hey jake, will you measure the size and pitch of the GOL fan you have for me? i want to see if they changed anything other than the composition of the fan when it went from metal to nylon. thanks!
Keep your chin up man. You have had to overcome some real obstcales with this test. I know some of them first hand (leaks, LOL)
Stating the facts and not selling or marketing an inferior product speaks loudly of your integrity. Even Joe would be proud!
Jake, I suspect that the head design is somewhat causing some if not all of the problem. The Type 1 head is definitely different from the Type 4 head when it comes to airflow movement impedance and due to the number and size of the cooling fins. Also, there are no or too little fins to the sides compared to the Type 4 which has none. They definitely pass air differently. Send me a sketch of the interior vanes on a Type 4 and one of what you are doing to make it work for the Type 1 and I'll see if I can help you out.
Anonymous wrote:Jake, I suspect that the head design is somewhat causing some if not all of the problem. The Type 1 head is definitely different from the Type 4 head when it comes to airflow movement impedance and due to the number and size of the cooling fins. Also, there are no or too little fins to the sides compared to the Type 4 which has none. They definitely pass air differently. Send me a sketch of the interior vane placement on your DTM Type 4 shroud and one of what you are doing to make it work for the Type 1 DTM shroud and I'll see if I can help you analyze what is happening
Sorry, my PC continually unlogs me and my posts end up showing me as "Guest"!
Jake, I suspect that the head design is somewhat causing some if not all of the problem. The Type 1 head is definitely different from the Type 4 head when it comes to airflow movement impedance and due to the number and size of the cooling fins. Also, there are no or too little fins to the sides compared to the Type 4 which has none. They definitely pass air differently. Send me a sketch of the interior vane placement on your DTM Type 4 shroud and one of what you are doing to make it work for the Type 1 DTM shroud and I'll see if I can help you analyze what is happening
Hey if this one does not work I will be glad to help redesign the dtm or design a new shroud I am in this for the long haul. I think we will be able to improve type 1 cooling. If not there is always the other option more type 4 engines and shrouds
OK !
Hmm.
2 things, which you might already have thought of. But anyway:
1. Fan speed. At that speed it might stall in it´s own air. Slow the fan down.
2. Try and split an oem late model fanshroud open and take a look at the vanes inside. - How far away from the fan are they placed. Which direction in relation to the fan and cylinderheads do they have ?
Time to go to bed for me. Only 3½ hrs till the ringer YEEELLS And another 14 hr working day begins.
I suspect that the head design is somewhat causing some if not all of the problem. The Type 1 head is definitely different from the Type 4 head when it comes to airflow movement impedance and due to the number and size of the cooling fins. Also, there are no or too little fins to the sides compared to the Type 4 which has none. They definitely pass air differently. 
Send me a sketch of the interior vanes on a Type 4 and one of what you are doing to make it work for the Type 1 and I'll see if I can help you out. 
And another 14 hr working day begins.
