John Vine Posted November 10, 2018 Share Posted November 10, 2018 Would it not be easier if the rad mounts had slots rather than holes? The gauge of the ali looks like it would take it. In fact, might that be a useful mod for current builders (until CC come up with something better)?Derek @ CC confirmed I need to cut the bolt installed behind the plate on the rad down.In which case, surely CC should do that themselves prior to shipping the kit!JV Link to comment Share on other sites More sharing options...
Jim 123 Posted November 10, 2018 Share Posted November 10, 2018 A really good idea John. Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted November 10, 2018 Leadership Team Share Posted November 10, 2018 I thought the same, although if there’s a slot it would need a good sized washer to stop the slot opening when the bolt is tightened, I suspect there’s not enough space the way it is now.Stu. Link to comment Share on other sites More sharing options...
Bricol Posted November 10, 2018 Share Posted November 10, 2018 Can't see the rad failing as the mounting plate is separate from the core, the fold stiffening it nicely and separating the stresses from the main rad. But I can see the bobbin failing if it's stressed under more than the rad weight if the fold back and the mounts on the chassis aren't parallel. It's not going to happen for a while though.My 17yr old bobbins seem to be doing well, having outlasted one rad so far.You can get M8 hex head screws in lots of lengths - that looks like M8x10 would have been better. Link to comment Share on other sites More sharing options...
Bricol Posted November 10, 2018 Share Posted November 10, 2018 The first picture does seem to show slots in the ali plate on the rad - already trying to allow for the differences that will happen between radiator and chassis fabrication.I did wonder if there was enough room to wangle the screw out, cut it down, and wangle it back in? Link to comment Share on other sites More sharing options...
John Vine Posted November 11, 2018 Share Posted November 11, 2018 I did wonder if there was enough room to wangle the screw out, cut it down, and wangle it back in?Judging by the photos here, the bolts come ready inserted -- which suggests they can't be removed?JV Link to comment Share on other sites More sharing options...
Jim 123 Posted November 11, 2018 Share Posted November 11, 2018 As far as I know the bolts come already inserted in these large capacity rads that are fitted to the 420R and 620. Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted November 11, 2018 Leadership Team Share Posted November 11, 2018 It's very likely the bolts are pre-fitted to ensure that the rad can't be punctured by installing a bolt facing towards the rad core .... poor form to pre-fit the wrong bolt though!Stu. Link to comment Share on other sites More sharing options...
simon_h Posted November 11, 2018 Share Posted November 11, 2018 I think they are the correct bolt for the cars that have no bobbins fitted, 620 doesn't as far as I can recall. I guess if it's fitted to one that's not its native application then some mods will be required Link to comment Share on other sites More sharing options...
Jim 123 Posted November 11, 2018 Share Posted November 11, 2018 Just a thought. As Simon mentions in #34 if the 620 (which has probably the same rad) does not come ex factory with bobbins in the installation there may be a point on Mark's 420 build. The 620 has a different nose cone from the 420, but given the size of the larger rad, packaging may be tight on both variants with all the hang-on bits in place. It might be worth a cautionary check to see if the 420 nose fits over your the rad with bobbins in the installation as they will make the rad sit further forward than without. Link to comment Share on other sites More sharing options...
CtrMint Posted November 12, 2018 Author Share Posted November 12, 2018 I’ll have to check when I put the rear of the car on movable stands again.at the moment I’m working through the rear of the car. Will update the post once I know more. Link to comment Share on other sites More sharing options...
Sooty Posted November 13, 2018 Share Posted November 13, 2018 As a piece of engineering this is a botch and Caterham should hang their heads in shame for delivering such a crappy mounting design when all that is needed is a slightly longer mounting leg before the 90 deg bend . This would move the rad forward by perhaps only a centimetre but not knowing what the clearance is between the top of the rad and the inside of the nosecone the fit might then get tight. Whatever, the design looks like its not been given appropriate thought Link to comment Share on other sites More sharing options...
CtrMint Posted November 13, 2018 Author Share Posted November 13, 2018 does CC ever read this forum? Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted November 13, 2018 Leadership Team Share Posted November 13, 2018 They certainly used to ... but having disassociated themselves with the club it would be assumed they no longer have a membership and therefore can't post. Rather like shooting oneself in one's foot.Stu. Link to comment Share on other sites More sharing options...
7 wonders of the world Posted November 13, 2018 Share Posted November 13, 2018 Ironic really when on every other brand forum the manufacturers actually monitor and assist customers with their own tech bods posting often under a pseudonym in order to minimise negative publicity and help to nip things in the bud before the esculate and become costly.................. Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted November 14, 2018 Leadership Team Share Posted November 14, 2018 Brand forum? This is the Lotus Seven Club.Stu. Link to comment Share on other sites More sharing options...
John Vine Posted November 14, 2018 Share Posted November 14, 2018 does CC ever read this forum?Given that it's a public forum, it would be naive to think they don't read it, but it's unclear whether they still have posting rights. Simon Lambert used to post occasionally before the "divorce", but presumably no longer can? Perhaps someone with access to the membership records could clarify?JV Link to comment Share on other sites More sharing options...
Wrightpayne Posted January 9, 2019 Share Posted January 9, 2019 I see on your other thread you mention an alternate rad is being sent.On my 1998 vintage copper cored rad the two sets of fixing holes in the rad were both compromised - using to lower ones meant the rad touched the top of the nose cone. Using the upper ones meant the lower hose was hard against the chassis tube.So, I just drilled 4 new holes inbetween the upper and lower holes and it fits perfectly!Ian Link to comment Share on other sites More sharing options...
CtrMint Posted January 9, 2019 Author Share Posted January 9, 2019 Unfortunately, the bracket isn't that generous so you can't drill new holes or even widen the current ones. I need to elongate the top side which as you can see from the image is pretty narrow to start with. Link to comment Share on other sites More sharing options...
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