Darren Groves Posted November 16, 2015 Report Share Posted November 16, 2015 Does anyone know what the minimum length the speedo cable needs to be for a Herald fitted with a D-Type overdrive, just to save me the bother of crawling under the car to measure. Ta. Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 17, 2015 Report Share Posted November 17, 2015 Darren ,If there, s no dimensions around drop the cable from the speedo and pulll theninner out and tape measure it Or is it in two bits !,,, Pete Link to comment Share on other sites More sharing options...
Darren Groves Posted November 17, 2015 Author Report Share Posted November 17, 2015 Hi Pete, Good idea. I'm just about to fit a Spitfire 1500 Speedo so was trying to work out which cable to order. I remember having to buy a longer cable when doing the OD conversion but no hope of remembering which length. The Spit Speedo has a different connection on the back so hence the need for a different cable. I know the speedo won't read correctly, but then again neither does the standard Herald one so it's just a matter of using the Sat-Nav to see which way and by how much it's out, or stumping up to have it re-calibrated. Darren Link to comment Share on other sites More sharing options...
Clive Posted November 17, 2015 Report Share Posted November 17, 2015 Give canleys a call. They were very helpful when I needed an unusual cable. Link to comment Share on other sites More sharing options...
Darren Groves Posted November 17, 2015 Author Report Share Posted November 17, 2015 Give canleys a call. They were very helpful when I needed an unusual cable. Thanks Clive. I emailed them earlier, they suggested their Part No. V11, which was originally Part No.156316 and they say is 67" long, everywhere else it's listed around 56", maybe a variation between suppliers. I was putting an order together for Canley's anyway so shall try that one. Link to comment Share on other sites More sharing options...
Clive Posted November 17, 2015 Report Share Posted November 17, 2015 Hmm, I would add a note to the order re the cable. With unusual stuff people get confused, so best to be ultra clear what you want! Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 17, 2015 Report Share Posted November 17, 2015 if its not way out you may improve some of the mid range speed reading by moving the needle a bit to get the actual TPM mark out 52.8 ft down the road stick a card needle on the cable ,push car exact 52.8 ft , count the needle turns and multiply by 100 pete Link to comment Share on other sites More sharing options...
Darren Groves Posted December 3, 2015 Author Report Share Posted December 3, 2015 Just an update for anyone else considering fitting Spit 1500 gauges to their Herald. The cable Canleys suggested (Part #V11) is 67" and plenty long enough. With a Std 4.11 diff and 165/70/13 tyres the gauge reads too high by just over 20%, will probably get it recalibrate at some point. Link to comment Share on other sites More sharing options...
mishmosh Posted December 3, 2015 Report Share Posted December 3, 2015 my 1200 on standard wheels and diff , with a standard d type OD over reads by 15 % with the standard dial.I put some over size tyres and rims on 185/65/13 iirc and its stillabout 4 % out ! my Bond with Jtype,and 1500 spit engine on standard wheels and 4:11diff under reads by 5 % .with the wheels as described above it underreads by 11% !! Link to comment Share on other sites More sharing options...
dogsbody47uk Posted December 20, 2015 Report Share Posted December 20, 2015 My 13/60 fitted with 1500 Spitfire flywheel,clutch,grearbox and J type overdrive, 5J x 13 alloys with 165/80 radials and a 1500 Spitfire speedo reads 30mph at 28mph by my satnav. Close enough for me. Link to comment Share on other sites More sharing options...
mishmosh Posted December 26, 2015 Report Share Posted December 26, 2015 Blimey. That's excellent. Link to comment Share on other sites More sharing options...
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