qim Posted June 7, 2017 Report Share Posted June 7, 2017 (edited) Hi About to enter in my first ever rally... Is it possible to have the tripmeter both in the speedometer and in an auxiliary instrument for the co-driver? Sounds impossible on a TR3A but I thought I read somewhere that it can be done. Could this be adapted? The Clubman, at the bottom of the page. https://www.gaugepilot.uk/products/gaugepilot-clubman Edited June 7, 2017 by qim Quote Link to post Share on other sites
Lebro Posted June 7, 2017 Report Share Posted June 7, 2017 Yes, but you will need to install the wheel sensors as shown in the wiring diagrams - it does not pick up from your speedo drive. Bob. Quote Link to post Share on other sites
qim Posted June 7, 2017 Author Report Share Posted June 7, 2017 (edited) Hi Bob Is that allowed in a classic car rally where I understand you should not use technology that was not in use when the car was built? PS _ I changed the link above Maybe the speedometer cable sensor is a better choice as it does not need any drilling or alterations to the car. It looks as it is something that you can install and uninstall quickly as soon as you don't need it, https://www.gaugepilot.uk/collections/gaugepilot-accessories Edited June 7, 2017 by qim Quote Link to post Share on other sites
Tom Boyd Posted June 7, 2017 Report Share Posted June 7, 2017 This product from brantz is widely accepted https://www.brantz.co.uk/product-page/retrotrip-2-classique-br9c Quote Link to post Share on other sites
qim Posted June 7, 2017 Author Report Share Posted June 7, 2017 Hi Tom. Thanks I think I have what I need: the Brantz Retrotrip 2 and the speedometer cable sensor. Now, all I need is to rob a bank! Quote Link to post Share on other sites
Tom Boyd Posted June 7, 2017 Report Share Posted June 7, 2017 If budget allow but wheel sensor also and the change over control box So if one sensor fails you can flick a switch and it will run off the other sensor Tom Quote Link to post Share on other sites
iain Posted June 7, 2017 Report Share Posted June 7, 2017 Again I refer you to the HRCR websites full of really helpful information. Quote Link to post Share on other sites
qim Posted June 8, 2017 Author Report Share Posted June 8, 2017 Hi Iain I have read the varipus pages of the link several times. Many thnks for the tip. Hi Tom I understand that the wheel sensors in a TR3A will need some drilling. I don't want to do that. Am I wrong? Quote Link to post Share on other sites
TwinCamJohn Posted June 8, 2017 Report Share Posted June 8, 2017 I have a Brantz International Pro 2 fitted. P1040527 by john curtis, sur Flickr I decided on the wheel sensor (although I have the cable sensor on my other rallye cars) as it seemed a pain to get the speedo cable out of the TR3A to cut the outer cable. I had no holes to drill and made up a bracket which fitted on the top of an existing stud / bolt. I have to bleed the brakes later so I'll take a picture. Do you watch the Rallye de Portugal Historico ? I have done it three times and , for me, it was the best ever. Not in the TR I might add.! Quote Link to post Share on other sites
qim Posted June 8, 2017 Author Report Share Posted June 8, 2017 Do you watch the Rallye de Portugal Historico ? I have done it three times and , for me, it was the best ever. Not in the TR I might add.! Hi I'm afraid I did not even know that it existed.... I will google it and take an interest, I will be very grateful if you could show me the pictures that might help fitting the wheel sensor. Regards Camilo Quote Link to post Share on other sites
TwinCamJohn Posted June 8, 2017 Report Share Posted June 8, 2017 The bolt I used is the bottom front bolt on the vertical link. There is enough thread coming through the nut to use another nut to secure the aluminium bracket I made. Have done two rallyes with this set up and no problems. Quote Link to post Share on other sites
qim Posted June 8, 2017 Author Report Share Posted June 8, 2017 (edited) Thanks Please, send me a picture if you have a chance. I looked at the site for the Raly de Portugal and some Youtube videos and it seems to be mostly for recent cars (70s and 80s). Pity! Edited June 8, 2017 by qim Quote Link to post Share on other sites
TwinCamJohn Posted June 8, 2017 Report Share Posted June 8, 2017 Hope this helps. P1040628 by john curtis, sur Flickr P1040629 by john curtis, sur Flickr Quote Link to post Share on other sites
TwinCamJohn Posted June 8, 2017 Report Share Posted June 8, 2017 I looked at the site for the Raly de Portugal and some Youtube videos and it seems to be mostly for recent cars (70s and 80s). Pity! It is possible in an earlier car BUT the problem is the lack of power. I competed in a MK1 Ford Escort Twin Cam Quote Link to post Share on other sites
qim Posted June 8, 2017 Author Report Share Posted June 8, 2017 Great! Thanks for the pictures. I will order one sensor and have a go at it. Quote Link to post Share on other sites
TwinCamJohn Posted June 8, 2017 Report Share Posted June 8, 2017 Have you got a link to the rallye that you are doing ? Quote Link to post Share on other sites
TorontoTim Posted June 8, 2017 Report Share Posted June 8, 2017 FWIW, my sensor is fitted in a very similar way to John's. However, instead of a dedicated bracket, I bolted mine through the brake disc dust cover (TR4). I think that the wheel sensor (when properly placed - this can take a little bit of testing) is MUCH better than a speedo cable sensor, but check legality for your rally. Quote Link to post Share on other sites
jbenajes Posted June 8, 2017 Report Share Posted June 8, 2017 A very cheap solution is to fit bicycle computers. You only need to glue a magnet on one of the rear brake drums and the pick-up sensor on the back plate, and then to route one wire to the dashboard (see photos). With only one ensemble magnet-sensor you can run as many computers as you wish (a diode must be wired for any additional computer). I have used this for rallying with a great success. Jesús Quote Link to post Share on other sites
qim Posted June 8, 2017 Author Report Share Posted June 8, 2017 Hi, Tim, again... I think that the wheel sensor (when properly placed - this can take a little bit of testing) is MUCH better than a speedo cable sensor, but check legality for your rally. I would think, looking ahead to the future (my next life) that all you have to do is a rally objects, is to disconnect anything that is attached to the cable. Quote Link to post Share on other sites
qim Posted June 8, 2017 Author Report Share Posted June 8, 2017 (edited) Hi Jesús A very cheap solution is to fit bicycle computers. ...and how much does that cost? ...well, I can see they start at around £20, However, they all seem to give you average speed, which is one of the no, no, nos, apart rom being electronic. If it only gave you distance... How accurate are they on a car, in your experience? Edited June 8, 2017 by qim Quote Link to post Share on other sites
jbenajes Posted June 8, 2017 Report Share Posted June 8, 2017 qim, They can display many parameters: actual speed, distance (daily trip and total), average speed, maximum speed, drive time, etc. It depends on the type of computer. The basis for the computing is the number of wheel turns that the system records (per time). Here you need to calibrate the computer by entering the circumference of the wheel. The error in distance and actual speed is the same as the error you make entering this circumference. Important is to use a computer with the correct speed range. Most of them just indicate up to 99.9 (mph or kph - too low in the second case). SIGMA computers exceed this limit. There is even one specific for motorbikes, ranging into the 300 kph oir mph (not strictly necessary for our TR cars). Jesús Quote Link to post Share on other sites
TwinCamJohn Posted June 8, 2017 Report Share Posted June 8, 2017 (edited) The Brantz sensor is supposed to have at least four reference points to pick up on. Mine works on the four bolts for the disc. It's for more accuracy. I think it depends how serious you take your rallyes. With the Brantz you can calibrate the trip if you change wheels/tyres and also calibrate to be the same as the organiser's trip. Maybe you can show us a picture of your vélo computers in the car, Jésus ? The advantage of the Brantz international is that you have several control options whilst you are competing. Freeze, reverse, fast forward. Good for adjusting to the road book if you make a mistake. Edited June 8, 2017 by TwinCamJohn Quote Link to post Share on other sites
TwinCamJohn Posted June 8, 2017 Report Share Posted June 8, 2017 Qim, have you got a link to the rallye you have entered. Here in France most rallyes are free on the equipment you use although GPS equipment is often banned. The problem is it is so difficult to control so no point having rules you cannot police. Quote Link to post Share on other sites
qim Posted June 8, 2017 Author Report Share Posted June 8, 2017 (edited) It's called "48 horas do Alentejo" and this year it is from 10 to 12 November based, as before, in Beja but ending on Sunday in Alcacer do Sal. This year's details have not been published yet. Last year's can be seen here http://www.48halentejo.com/ http://www.jornaldosclassicos.com/2016/11/10/48-horas-automoveis-antigos-alentejo-comecamja-amanha/ and participants here http://www.jornaldosclassicos.com/wp-content/uploads/2016/11/Lista-final.pdf There are plenty of youtube videos on the 2016 (and earlier) ralies. https://www.google.co.uk/search?q=48+horas+do+alentejo+cpaa&oq=48+horas+do+alentejo+cpaa&aqs=chrome..69i57.8316j0j4&sourceid=chrome&ie=UTF-8#q=48+horas+do+alentejo+youtube Why don't you come along? Price approximately €450 including hotel and all meals https://www.google.co.uk/maps/dir/Charente+Maritime/Beja,+Portugal/@41.7965027,-8.657584,6z/data=!3m1!4b1!4m13!4m12!1m5!1m1!1s0x48010f8cd49d63f3:0x305d39260e72680!2m2!1d-0.7733188!2d45.74949!1m5!1m1!1s0xd1a7371a5dfcd87:0x6a5aea70e6cc5193!2m2!1d-7.8627308!2d38.0153039 Edited June 8, 2017 by qim Quote Link to post Share on other sites
TwinCamJohn Posted June 8, 2017 Report Share Posted June 8, 2017 (edited) Could be interested but are the regulations in French or English ? Would road book and instuctions be in French or English ? If everything is in Portugese it does present a problem. Less so if it was just une petite sortie but this seems to be regularity. Also where is it based? I can't see the costs anywhere? Maybe you could check with the organisers for me? Amicalement John Edited June 8, 2017 by TwinCamJohn Quote Link to post Share on other sites
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