Simba Freeflow fan conversion

[Andrew]

I see what you mean now, (good to know how advanced a new Fastrac is!) thinking about it you can stop a PTO at full rpm on its original set up, but maybe the fan can drive the pto until it stops? There are relief valves or flow control valves on the drill but no idea if these are for this issue?

There will be protection in there somewhere, otherwise Simba would have damage and warranty claims etc but haven’t seen a PTO version so not sure where. Haven’t looked at our 6m for a while so not sure on the setup, but I remember 3500rpm was the minimum you needed.

 

[Lincsman]

There will be protection in there somewhere, otherwise Simba would have damage and warranty claims etc but haven’t seen a PTO version so not sure where. Haven’t looked at our 6m for a while so not sure on the setup, but I remember 3500rpm was the minimum you needed.

The 2 valve things in the OP's photo are the only things in the lines, never touched mine... not really sure what they do!

 

[Romeogolf]

Put the drill on yesterday afternoon and put the plan info action. I’m pleased to say it was a success. Starting the spool Flow at 10% gave a fan speed of 500rpm which is a nice slow start, and I could increase it slowly up to 25% which gave me a fan speed of 2500rpm which is what I’ve used for wheat. To slow it down I could reduce the flow back down to 10% and then put into float, or just by putting it in float from working speed it took about 6 seconds to come to a stop. Very pleased with the result however simple, and pleased the rest of the hydraulics all worked as required with the fan engaged.
I do wonder if the 6m required a higher fan speed than the 4m? I haven’t got a manual for it, but everyone I’ve spoken to in relation to fan speed have advised 2200rpm for barley and 2500rpm for wheat.

Thankyou for your responses and advice, much appreciated.

 

[Andrew]

Put the drill on yesterday afternoon and put the plan info action. I’m pleased to say it was a success. Starting the spool Flow at 10% gave a fan speed of 500rpm which is a nice slow start, and I could increase it slowly up to 25% which gave me a fan speed of 2500rpm which is what I’ve used for wheat. To slow it down I could reduce the flow back down to 10% and then put into float, or just by putting it in float from working speed it took about 6 seconds to come to a stop. Very pleased with the result however simple, and pleased the rest of the hydraulics all worked as required with the fan engaged.
I do wonder if the 6m required a higher fan speed than the 4m? I haven’t got a manual for it, but everyone I’ve spoken to in relation to fan speed have advised 2200rpm for barley and 2500rpm for wheat.

Thankyou for your responses and advice, much appreciated.

6m needs more puff as there should be 50% more pipes, all of which would be longer than the ones on your 4m. So would need about double the volume of air.

There may be a bigger fan fitted as well though I suppose.

 

[Lincsman]

6m needs more puff as there should be 50% more pipes, all of which would be longer than the ones on your 4m. So would need about double the volume of air.

There may be a bigger fan fitted as well though I suppose.

They all have the same fan, so as you say need more RPM for 6 m, my front hopper needs 4000 to get seed to the back tank.

 

[Romeogolf]

That makes sense, the seed has got a longer commute on a bigger drill so more wind would be required. With a 4m having the same fan as a 6m, it’s nice to know my fan isn’t being over worked at 2500rpm!

 

[Gruffalo]

Put the drill on yesterday afternoon and put the plan info action. I’m pleased to say it was a success. Starting the spool Flow at 10% gave a fan speed of 500rpm which is a nice slow start, and I could increase it slowly up to 25% which gave me a fan speed of 2500rpm which is what I’ve used for wheat. To slow it down I could reduce the flow back down to 10% and then put into float, or just by putting it in float from working speed it took about 6 seconds to come to a stop. Very pleased with the result however simple, and pleased the rest of the hydraulics all worked as required with the fan engaged.
I do wonder if the 6m required a higher fan speed than the 4m? I haven’t got a manual for it, but everyone I’ve spoken to in relation to fan speed have advised 2200rpm for barley and 2500rpm for wheat.

Thankyou for your responses and advice, much appreciated.

How did you pipe it in the end ? Just flow and return or anything else?
Cheers

 

[Romeogolf]

As described above, the pipe from the tractor spool pump into the variation valve, the Freeflow return pipe taking in the return from the fan motor, the excess from the variation valve and the pressure relief valve. On mine the coupling on the bottom of the tank connected straight up to the T piece that went into the top of the tank so very simple. May make a few new pipes up just to tidy the job up a bit.

 

[Einstien]

If your running the fan off the Tractor now, have you swapped to correct oil, and removed tank on the drill? ?

 

[Lincsman]

If your running the fan off the Tractor now, have you swapped to correct oil, and removed tank on the drill? ?

In my case it runs on the tractors oil that came in it, the tank is still on and empty, the pipe work bypasses it. It can all be put back to original in 20 mins with 2 adjustable spanners.