Focustronic bulk replacement parts thread (Mastertronic / Alkatronic / Dosetronic)

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Biff0rz

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My Mastertronic and Alkatronic have been running for 2 months now and I haven't changed the filters so far.
I'd be definitely interested in finding a reasonably priced alternative. Please post your findings.
I checked the user's guide and I couldn't find how often they should be changed.
I guess I would change them if I see stuff growing in it or if I notice a large volume change during the pump calibration procedure.

I looked for similar filters some time ago since I perform continuous water changes with DOS pumps. I ordered some fuel filters following a post I found here but they came with a metallic cap and won't work (the picture didn't show the metalic part).
6mo is the recommended filter/external hoses/internal pump hoses replacement cycle.
 
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Biff0rz

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One of these is from FT, one is the sample. The sample is ~2mm off so we'll probably ask them to send one more sample round.

What would be very helpful is if you have any retail needles (the ones that came with MT or from CV) and you have a caliper, could you measure the length of your needles and post up the total avg length?

PXL_20211006_193708493.jpg



PXL_20211006_193952707.jpg PXL_20211006_193911765.jpg
 
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MikeTheNewbie

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I just opened one that came with the Mastertronic to try and got 78.10mm so there seems to be a bit of a variation even in the OEM needles.
I think shorter is less of a problem than longer. With shorter, you'd need to refill more often, with longer you could have crashes.
I don't have needles from Coralvue as I'm holding my purchase to get yours at a more reasonable price.
I hope the length situation doesn't cause a major delay and you can start selling them before people run out of them and face he need to get the ones from CoralVue.
Hopefully you can recover the initial investment soon and can bring the price down to $1 per needle. I think that would be a really sweet spot.
I'd be happy to try the longer ones you got to see if there is enough clearance in my MT. I'm guessing there is also some variation on the Mastertronic side.
20211006_210955.jpg
 

Biff0rz

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I just opened one that came with the Mastertronic to try and got 78.10mm so there seems to be a bit of a variation even in the OEM needles.
I think shorter is less of a problem than longer. With shorter, you'd need to refill more often, with longer you could have crashes.
I don't have needles from Coralvue as I'm holding my purchase to get yours at a more reasonable price.
I hope the length situation doesn't cause a major delay and you can start selling them before people run out of them and face he need to get the ones from CoralVue.
Hopefully you can recover the initial investment soon and can bring the price down to $1 per needle. I think that would be a really sweet spot.
I'd be happy to try the longer ones you got to see if there is enough clearance in my MT. I'm guessing there is also some variation on the Mastertronic side.
20211006_210955.jpg
Thanks. I did a bunch of measuring, it looks like our manufacturer has MUCH better QC. We just need to get the length dialed in and we're in business

1633801119388.png
 
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castires

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I think "FuzzyTronic" will focus on needles only. You can buy 100 syringes at Amazon for ~$10. I don't see any value in trying to bundle them with the needles. I would only make the package/shipping more expensive.
I reread the thread after posting that and came to the same conclusion. So I have already ordered 100 from Amazon. I ordered the items to make the silicon caps as well. So now just need the syringes.
 
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MikeTheNewbie

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Yeah, give a like to @robocop1906 's post, kudos to him for sharing the silicon caps option. I got them to and they work perfect.
@castires once you receive your syringes and confirm they work OK could you share the name of the item so others can buy with confidence?
I would share mine but the one I ordered was a combo with multiple sizes. The 1ml fit well but I don't think people will need the rest.
 

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Yeah, give a like to @robocop1906 's post, kudos to him for sharing the silicon caps option. I got them to and they work perfect.
@castires once you receive your syringes and confirm they work OK could you share the name of the item so others can buy with confidence?
I would share mine but the one I ordered was a combo with multiple sizes. The 1ml fit well but I don't think people will need the rest.
Will do.
 
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Biff0rz

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I think "FuzzyTronic" will focus on needles only. You can buy 100 syringes at Amazon for ~$10. I don't see any value in trying to bundle them with the needles. I would only make the package/shipping more expensive.
Correct. Syringes can be ordered on Amazon. Final fitment will be done this week then the needles ship!

Next I want to tackle bulk filter fleece. :)
 
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MikeTheNewbie

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Correct. Syringes can be ordered on Amazon. Final fitment will be done this week then the needles ship!

Next I want to tackle bulk filter fleece. :)
Awesome, BRS needs some competition!
Which systems are you considering supporting?
There is a supplier I found here in R2R, Precision Converting LLC, but they didn't have the right size for the Trigger Systems sump (1 1/4" ID) and there weren't big savings compared with the OEM ones so I'm still buying the OEMs.
 

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Awesome, BRS needs some competition!
Which systems are you considering supporting?
There is a supplier I found here in R2R, Precision Converting LLC, but they didn't have the right size for the Trigger Systems sump (1 1/4" ID) and there weren't big savings compared with the OEM ones so I'm still buying the OEMs.
Adapters are easy for the rollers. They have a 24" roll which could be cut into 4 6" sections. At 200yrds = 300 ft x 4 rolls = 1200ft for $49. The clarisea is 131ft for $35. That's 0.04/ft vs $0.26/ft. Sounds worth it to me. Are you sure this is the same fleece that's being used in the hobby? 50 micron (nominal) rayon/polyester
 
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MikeTheNewbie

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I think it might be worth it to revisit the subject and see if they have smaller diameter cores now. At that time I was looking for a 1.0oz polypropylene roll. I probably saw a recommendation for that material here in R2R or just considered it because it didn't contain formaldehyde.
The Trigger sump can accommodate rolls up to 4.5" outside diameter and with a 2" diameter core, they could only fit 25 yards per roll. You piqued my interest but I see I'm derailing the conversation (Focustronic replacement parts), maybe we can create a dedicated thread to discuss further?
 
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