Convoy 4x18A and 3x21A - Heads Interchangeable?

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benz
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Convoy 4x18A and 3x21A - Heads Interchangeable?

Does anyone have both of these Convoy lights and know if the head from the Convoy 4×18A fits on the body of the 3×21A? I have seen the dimensions and they seem very close – I would love a single emitter version of the Convoy 3×21A… Thanks!

Edited by: benz on 09/24/2021 - 10:28
Lixivium
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They’re out of stock for the next two weeks or so but Simon already offers that:

https://www.aliexpress.com/item/1005003189683649.html

Funzel67
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I asked Simon in the Convoy thread. It is not possible. I have the SBT90 version of 4×18 and would love to switch to the SFT40 head of the 3×21 Form time to time.

benz
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Lixivium wrote:
They’re out of stock for the next two weeks or so but Simon already offers that:

https://www.aliexpress.com/item/1005003189683649.html

Thanks Lixivium but I was after a XHP-70.2 version, not a SBT90.2 (sorry I should have said in the OP)

benz
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Funzel67 wrote:
I asked Simon in the Convoy thread. It is not possible. I have the SBT90 version of 4×18 and would love to switch to the SFT40 head of the 3×21 Form time to time.

Oh that’s bad news but thank you for the confirmation!

TermsakC
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I only have the Convoy 4×18a with 90.2 LED. Having been waiting for another Convoy 3×21a with 90.2 LED, but it is out of stock now.

Looking on the Convoy website in Ali Express, both of these flashlights have the same head diametre of 69 mm. But the body tube of the 3×21a is slightly bigger at 51.8 mm, compared with 50 mm of the 4×18a. This may make their heads NOT interchangeable. And the 3×21a is slightly longer, at 158.4 mm; the 4×18a is 153 mm in length.

Benz, if you need only one, I think the 4×18a with 90.2 LED is a good choice.

You can buy the colour lens of Astrolux FT03 to fit on this Convoy. Very neat. Blushing I have bought one set of four colour lens and one 4×18a with 90.2 LED for my daughter for her “light safari” in her wooded neighbourhood in New Jersey.

benz
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Thanks TermsakC but I have an original Convoy M3 with XHP70.2 and I love the beam profile & hotspot of the light, I just want longer run time and in-light recharging so was looking at the 4×18A with the XHP70.2. I am not interested in the beam pattern of the 90.2 because it’s too throwy for my needs.

I now wonder though if I could buy the single 90.2 version of the 3×21A then swap the emitter to the 70.2… but if the die size is different I guess it means the reflector may not be optimised for the smaller 70.2 LED?

Funzel67
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Hi Benz! This will not work as they are working on different voltage. SBT90 is 3 V where XHP70 needs 6 V (or 12V if wired different). You would need to replace the driver.

benz
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Ah yes, good point. Thanks!