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moosetestbestanden

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Posts posted by moosetestbestanden

    Brake questions

    in TechTalk

    Posted

    CC is selling several rear brake items:

     

    A "Race" caliper, here

     

    And a vented disc, here

     

    Clearly there is weight savings but is there any increase in braking performance compared to the standard 'uprated' brakes? Iow, are they worth the dough?

     

    2ndly, I'm changing pads. Topic has been covered to death but just the same I'm soliciting opinions on the ultimate performance pads for track use. I've got the AP 'Caterham' badged 4 pot calipers up front and the uprated calipers at the rear. I've had some issues w/ the rears locking and I'd love to see that go w/out installing a balancing valve (even though I probably should). The car sees very little duty on the road so no reason to compromise.

     

    Cheers!

     

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    Chris

    A verbis ad cursus

    Foam bead resin seat

    in TechTalk

    Posted

    How will you handle the seat harnesses? Photo indicates that you'll lay them over the top, perhaps after trimming the seat edge.

     

    Edit: Can it be easily cut?

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    Chris

    A verbis ad cursus

     

    Edited by - moosetestbestanden on 20 Oct 2009 02:38:37

    Duratec (re)build advice please

    in TechTalk

    Posted

    standard pistons and rods on the R400 duratec I believe. And no roller TBs; there's a single plenum chamber.

     

    A single plenum chamber? I haven't ever seen the R400 so I don't know what Caterham do to get 210 hp but in the early days of Duratec that meant TBs & cams.

     

    Theoretically (if nothing inside is broken / bent) you should be able to transfer all the good bits (intake system, cams, sump, lightweight clutch / flywheel if it has them, etc.) to a donor and away you go. I did this when I popped an oil ring - a low mileage junkyar... er, reclaiming yard engine cost me $750. I moved all of the good parts from the smoker to the new. It fired up 1st try, no remapping required, and runs essentially identically to the original (knock wood).

     

    You may want to switch to an 80 deg. C thermostat while you're at it. 😬

     

    Or, go see Ammo for even more fun *cool*

     

     

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    Chris

    A verbis ad cursus

    Tyre Ageing

    in TechTalk

    Posted

    An expert's view on the expected tyre life when stored in the dark on a low weight car would also be interesting.

     

    I recently re-mounted a set of ACB10s on wheels after about 2 years sitting in the dark in a shed attached to my garage. I'd put them in opaque garden bags. The tires are somewhere around 3 - 4 years old. They don't seem to have suffered at all in terms of grip, or in any other way for that matter.

     

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    Chris

    Ad majorem 7 gloriam

    U joint failure in California pics

    in TechTalk

    Posted

    Thanks for that Paul. I'll pass the info about the strengthening along to Jon. As long as he's got to do some work he might as well do it all. He's had nothing but trouble this year.

     

    W/ CC now offering a high HP engine w/ a sequential option, I wonder if they've thought about this mode of failure. After all, the new R500 is little different than Jon's 250 +/- hp. Add some slicks and one would be in the same arena.

     

    Edit: A Norcal shop shows a hoop on their website and I believe they installed them in their race cars. I don't think they were ever, um, tested however.

     

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    Chris

    Ad majorem 7 gloriam

     

    Edited by - moosetestbestanden on 11 Jun 2008 01:44:44

    U joint failure in California pics

    in TechTalk

    Posted

    Is that a cupholder in the passenger area?

     

    Ha! 😬

     

    No, it's the mount for the remote shock thingies. Suffered a bit it did.

     

    All apologies about the login thing - I don't get it and I'll ask Magnus why.

     

    Thanks for the help Mav!

     

    Roger: Jon said it was new, replaced prior to the start of the year. It had only done only 4 or 5 track events, perhaps a grand total of 100 minutes. Jon usually only hops on track long enough to get a good time - 3 or 4 laps per session most, sometimes less. This seems shock-load related & Jon has mentioned to me that he still isn't perfect w/ the sequential. Magnus theory that the drivetrain is essentially a direct connection between engine and tires seems plausible. How are sequentials implemented in your neck of the woods?

     

    Edit: Roger, you and Barbara have fun over there in France. We sorely wish we would have been able to join you. Work and events precluded that - bah.

     

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    Chris

    Ad majorem 7 gloriam

     

    Edited by - moosetestbestanden on 10 Jun 2008 16:09:31

    U joint failure in California pics

    in TechTalk

    Posted

    I don't think registration is required. Drill down to the 'more replies below current depth' and you'll see on the list 'Well, as promised see...' posted by me. Then click on the attachments listed below the posting.

     

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    Chris

    Ad majorem 7 gloriam

    U joint failure in California pics

    in TechTalk

    Posted

    Anybody interested in a fairly clear example of what happens when the front U-joint in the driveshaft fails at speed is welcomed to have a look

     

    here

     

    Opinions, especially from those who run or have experience w/ Quaife sequentials, are gladly welcomed, either here or there.

     

    Thanks!

     

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    Chris

    Ad majorem 7 gloriam

    Duratec 2.2 at Emerald yesterday

    in TechTalk

    Posted

    We can get 100 and 110 at the tracks I frequent (edit: right out of the pump), and there's a normal gasoline station that sells 100 not too far away in Pasadena. All of it is pretty dear, at least relative to 'normal' gasoline, and relative to the price you all are paying now. *eek*

     

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    Chris

    Ad majorem 7 gloriam

     

    Edited by - moosetestbestanden on 19 May 2008 15:54:40

    Duratec 2.2 at Emerald yesterday

    in TechTalk

    Posted

    When I have time I'll drive to Emerald in my car and swap the bodies to see what happens. There is another 2 litre that is on the bench at the moment that is being prepared for racing that was originally a cooking engine fitted with 45's. Will do a back to back on the flowbench and the dyno with that too. 45's against 54's. Should be interesting.

     

    Indeed, and informative r.e. which way to go forward.

     

    Your compatriots should like the 54mm / 2.125" throttle bodies. Yanks like big stuff don't they?

     

    Yes we do. We can't help it (we're that way as a result of our Anglo Saxon heritage). Don't you?

     

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    Chris

    Ad majorem 7 gloriam

    Duratec 2.2 at Emerald yesterday

    in TechTalk

    Posted

    Be interesting to try them on a ported standard valve Duratec head like I have on my own 2 litre engine which has 35 mm inlets and 30 mm exhausts. Maybe another trip to Emerald soon?

     

    Your own engine? Ahem. 😬

     

    YHM.

     

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    Chris

    Ad majorem 7 gloriam

    Driving differance between CR500 and slicks

    in TechTalk

    Posted

    Avon slicks have a rotational direction

     

    I've been using them like ACB10s, w/ the numbers facing right at the rear and left at the front. Don't know how much this matters to be honest.

     

    Torque wrench advice is spot on imo.

     

    For sure you'll notice a little bit of difference in grip between the 500s and slicks. That much I do know about 😬

     

     

     

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    Chris

    Ad majorem 7 gloriam

    Fluke/mog half doors

    in TechTalk

    Posted

    Front end tucks behind the trailing edge opf the scuttle

     

    Joachim didn't tell me that when I got mine. I'll have to give that a look. Who knew?

     

    I've attached mine w/ velcro all around. The tape looks pretty stupid when the doors aren't on the car but they won't budge otherwise.

     

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    Chris

    Ad majorem 7 gloriam

    2.0L Duratec re-install question(s)

    in TechTalk

    Posted

    Thanks to all for the help. Ammo, YHM.

     

    Edit: Next question: Does anyone know the part number for the pilot bearing for the input shaft at the rear of the crankshaft? Or alternately, where one can be sourced?

     

    I've measured it to be 15mm ID x 22mm OD.

     

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    Chris

    Ad majorem 7 gloriam

     

    Edited by - moosetestbestanden on 1 Feb 2008 14:22:57

     

    Edited by - moosetestbestanden on 1 Feb 2008 14:23:26

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