New Kingtech K70 shes tiny with power
09-22-2017, 12:35 PM
#105
Just intuitively, I'd say that definitely not with a P-20 sized pipe and most likely not with a K45 sized pipe.
These 70N engines produce almost twice the thrust of a 40N engine but with the same can and nozzle size. To do this, they have to move more air through the same opening - thus much higher efflux velocity. I would think that stuffing that much high velocity air (or trying to) through a small pipe would at a minimum result in a loss of thrust, possibly engine overheat, or worst case pipe collapse.
I would stick to a pipe designed for an 80N engine for the K-70 myself...
Bob
These 70N engines produce almost twice the thrust of a 40N engine but with the same can and nozzle size. To do this, they have to move more air through the same opening - thus much higher efflux velocity. I would think that stuffing that much high velocity air (or trying to) through a small pipe would at a minimum result in a loss of thrust, possibly engine overheat, or worst case pipe collapse.
I would stick to a pipe designed for an 80N engine for the K-70 myself...
Bob
11-01-2017, 09:59 AM
#106
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I just uploaded a unboxing and test run video on youtube.
unfortunately rcu won't let me upload any url's until I have at least 10 posts. maybe one of you can help me out and post the link for me.
should be easy to find: youtube unboxing Kingtech K70G
hope you like it
unfortunately rcu won't let me upload any url's until I have at least 10 posts. maybe one of you can help me out and post the link for me.
should be easy to find: youtube unboxing Kingtech K70G
hope you like it
11-02-2017, 09:46 AM
#109
Here's mine as well, had to do something about the stock settings as would not start on diesel from factory. have changed very little and have a record of what was done, I was very reluctant in changing anything to be honest.
Last edited by raydar; 11-02-2017 at 09:59 AM.
11-02-2017, 09:53 AM
#110
I will say after watching that video of yours ragtop yours starts sooo sooooo much better, are you running diesel?. Mine is no where near starting right, it barely gets a temp increase on first burn and really struggles to get past the 72 degree ramp up, takes ages and sometimes fails.
Have a feeling I am going to have to contact kingtech eventually to get it starting right.
Have a feeling I am going to have to contact kingtech eventually to get it starting right.
11-03-2017, 08:49 AM
#111
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I will say after watching that video of yours ragtop yours starts sooo sooooo much better, are you running diesel?. Mine is no where near starting right, it barely gets a temp increase on first burn and really struggles to get past the 72 degree ramp up, takes ages and sometimes fails.
Have a feeling I am going to have to contact kingtech eventually to get it starting right.
Have a feeling I am going to have to contact kingtech eventually to get it starting right.
It looks like you have cold ambient temperature in your video, that might cause a bad / longer start...
11-03-2017, 09:04 AM
#112
Cheers for the update on what fuel your using I thought it was running to clean for diesel.
Had mine out today and got it running/starting a lot better, settings are auto +1 and 68 pump ign,k. It's very close and a lot cleaner.
I am new to turbines and was wondering if cold diesel on a cold day would be a factor, today was 12 degrees C and after a few good starts on the above settings I put it back to factory auto +3 and pump ign,k 64 and it refused to start, hangs on preheat every time so a change was indeed justified and had to be made.
Ran it three different days now on the bench and feel I have made progress each time out and have a setting close enough to use now, of course would rather it just ran out the box but it did not. On the plus got quite familiar with starting a turbine.
Had mine out today and got it running/starting a lot better, settings are auto +1 and 68 pump ign,k. It's very close and a lot cleaner.
I am new to turbines and was wondering if cold diesel on a cold day would be a factor, today was 12 degrees C and after a few good starts on the above settings I put it back to factory auto +3 and pump ign,k 64 and it refused to start, hangs on preheat every time so a change was indeed justified and had to be made.
Ran it three different days now on the bench and feel I have made progress each time out and have a setting close enough to use now, of course would rather it just ran out the box but it did not. On the plus got quite familiar with starting a turbine.
Last edited by raydar; 11-03-2017 at 11:59 AM.
11-04-2017, 12:07 PM
#113
[QUOTE=raydar;12380595]
I am new to turbines and was wondering if cold diesel on a cold day would be a factor, today was 12 degrees C and after a few good starts on the above settings QUOTE]
Yes. temp makes a difference they are harder to light off on colder days . Once lit the fuel ring and injectors are heated to atomize the fuel. You will notice once lit off. it will start consistently unless it cools to ambient temp again.
I am new to turbines and was wondering if cold diesel on a cold day would be a factor, today was 12 degrees C and after a few good starts on the above settings QUOTE]
Yes. temp makes a difference they are harder to light off on colder days . Once lit the fuel ring and injectors are heated to atomize the fuel. You will notice once lit off. it will start consistently unless it cools to ambient temp again.
