Viscoelastic resin

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Viscoelastic resin

Author	Message
Ewan McLean	E Ewan McLean posted 6 Years Ago HOT Topic Details
E Group: Forum Members Posts: 1, Visits: 3	I have a requirement to make some form of damper for a Swing Arm on a piece of equipment we manufacture. A mountain bike air shock absorber would probably be ideal but decent examples retail for around £200 which is a bit expensive. A "bump stop" type of device would be adequate (depending on material) and I have searched for suitable materials that we could cast in house. Sorbothane looks like it would be suitable but it looks like I can't buy this as a resin and there is poor availability in the UK (unless you want insoles for your shoes!). Can anyone recommend a suitable castable resin? The Swing Arm is around 500mm long with a 6 kg mass on the end. Ewan
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Matt (Staff)	Matt (Staff) posted 6 Years Ago HOT Post Details
Group: Forum Members Posts: 680, Visits: 1.9K	+x Ewan McLean - 12/4/2018 10:13:41 AM I have a requirement to make some form of damper for a Swing Arm on a piece of equipment we manufacture. A mountain bike air shock absorber would probably be ideal but decent examples retail for around £200 which is a bit expensive. A "bump stop" type of device would be adequate (depending on material) and I have searched for suitable materials that we could cast in house. Sorbothane looks like it would be suitable but it looks like I can't buy this as a resin and there is poor availability in the UK (unless you want insoles for your shoes!). Can anyone recommend a suitable castable resin? The Swing Arm is around 500mm long with a 6 kg mass on the end. Ewan Hi Ewan, I'm afraid that none of the urethane resins we have in our range could be described as having viscoelastic properties. We have flexible and semi flexible polyurethanes which are certainly elastic but do not have the viscous property that would help to absorb the energy you're talking about. I don't know of any other companies in our industry that would have a two-part viscoelastic polyurethane but you might find you get a property quite close with something like a flexible polyurethane foam. There's a product widely known in theatre-prop circles as 'gun foam' which is a black, flexible PU foam. You can get it from MB Fibreglass; that might be worth a try. Matt Statham Easy Composites / Carbon Mods - Technical Sales
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