CtrMint Posted January 17 Share Posted January 17 Hi, Does anyone happen to know the IRHD of the factory bobbins from Caterham? Thanks Link to comment Share on other sites More sharing options...
SM25T Posted January 17 Share Posted January 17 What is an IRHD ? Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted January 17 Member Share Posted January 17 (edited) Measure of rubber hardness. Jonathan Edited January 17 by Jonathan Kay Link to comment Share on other sites More sharing options...
Iamscotticus Posted January 29 Share Posted January 29 One thing I have seen many times is the substitution of the radiator bobbin for the exhaust bobbin, which has a tapered center. Is it better to have a softer mount for anything plumbed? Link to comment Share on other sites More sharing options...
CtrMint Posted January 29 Author Share Posted January 29 I'm going through the process of fitting a Radtec radiator and oil cooler to my 620R and decided to source new bobbins in case the originals had stiffened with heat exposure. I wasn't looking to deviate from the intended specific, just save a few pennies from a specialist hardware supplier rather than CC. Link to comment Share on other sites More sharing options...
ScottR400D Posted January 30 Share Posted January 30 As it happens I was in the garage just now. 60 shore is the answer. Link to comment Share on other sites More sharing options...
CtrMint Posted February 1 Author Share Posted February 1 awesome and thank you. Link to comment Share on other sites More sharing options...
krisfl Posted February 2 Share Posted February 2 On 30/01/2024 at 16:14, ScottR400D said: As it happens I was in the garage just now. 60 shore is the answer. I don't know what is more cool: 1, the fact that we're part of a community full of the sort of people that would know about this. Or 2, the fact that some one would have a gauge/tool to hand AND know how to use it!!! You're all brilliant people 😎 🍻 3 Link to comment Share on other sites More sharing options...
ScottR400D Posted February 3 Share Posted February 3 A relic from a past life!! Link to comment Share on other sites More sharing options...
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