Delrin Megalodon

Simon TW

Does anyone know if there is a Delrin (hope it's spelt right) scrubber case housing for the Meg.

I did hear that the radial scrubber would be coming with one.

I want to make it lighter for travel and that big chunk of ally could be replaced.

Thanks for reading.

rogeringebo

Hi!
Are you sure that would really be lighter? Delrin is rather heavy.....


Cheers
Rodge

Steve

ISC are experimenting with a few things. No where near offering an alternative, changing or even deciding if a change needs to be made as far as I know.

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cool_hardware52

Acetal is about 1.4 SG. Alum is about 2.6 SG.

If the volumes stay the same an AL piece would be 1.85 as heavy as the acetal piece. If you can machine away more of the AL because of it's greater strenght you might end up lighter.


Tobin

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PacketSniffer

A Delrin (plastic) cannister by itself may not support an environment for the scrubber to work efficiently. I'm not an expert though.

Edit: Now that I read it again, I'm not sure if the OP is referring to the cannister or the scrubber.

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Gibbon

the canister which is as standard made of aluminium.

Titanium might be another option for a lightweight, no expense spared canister

decoweenie

Paging Mr Titanium, Michael Hearn... Boy oh boy, I hate to find out the price of this...

Or you could use the same material as the Classic-KISS. I personally could vow for its durability.

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Genesis

Delrin will definitely work but I'm not sure you'd actually get LESS weight out of it. Acetyl (Delrin's "technical" name) is pretty heavy, as was noted.

If the cannister exterior serves as a focal point for intentional condensation in the design, however, you're going to lose that going to a plastic. How much this would affect the unit is something I couldn't quantify - but its a consideration if the can is intended to serve as a condensing surface before the gas passes through the scrubber (if I'm understanding the gas flow correctly on the Meg, this would potentially be the case.)

It also isn't going to be cheap. Delrin is quite expensive stuff and buying a rod in this diameter (if you can even source that) is going to make you CRY. Running a boring bar down it isn't going to be the easy way out of this - it works for light cans but those are a LOT smaller.....

I suspect the answer there is that you'd need to be able to cast it - not impossible but pretty big bucks, and thus it would only make sense if you're makling a lot of them. Aluminum tubes are common items and tigging a plate on the end to close it off and finishing that is fairly pedestrian machine-shop work. Casting acetyl is not.

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narked at 90

the price for 1m of delrin in black at 180mm dia works out at £594 + vat!!!! + delivery and i weights in at nearly 40kg
and you will throw most of it away.

kind regrads john routley

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cys

Some technical info relating to the structure of Delrin (in case anyone cares ): "Polyoxymethylene, also known as acetal resin, polytrioxane, polyformaldehyde, and paraformaldehyde, is an engineering plastic used to make gears, bushings and other mechanical parts (cf. nylon, teflon, UHMWPE). The most important polyacetal resin, it is a thermoplastic with good physical and processing properties. It is also sold under the trade names Delrin, Kepital, Celcon, "Hostaform" and Ultraform, the last three being copolymers. Its chemical formula is -(-O-CH2-)n-."