Replacement throttle pots
Discussion
Hello,
I've read a little about those and came to the opinion that they are weak by design. An hall effect tps would be far superior, but for this the output have to match.
So, do someone know what kind of signal does the Mbe ecu use? Voltage or resistance? If voltage, is it 5 or 12v?
Thanks!
Julien
I've read a little about those and came to the opinion that they are weak by design. An hall effect tps would be far superior, but for this the output have to match.
So, do someone know what kind of signal does the Mbe ecu use? Voltage or resistance? If voltage, is it 5 or 12v?
Thanks!
Julien
Strangely I was expecting you to answer 
I think those guys could help : https://acuityinstruments.com/collections/sensors-...
They do some apparently nice stuff for Hondas, should be able to do something for our beasts...
I'll get in touch with them and will let you know.
Julien
I think those guys could help : https://acuityinstruments.com/collections/sensors-...
They do some apparently nice stuff for Hondas, should be able to do something for our beasts...
I'll get in touch with them and will let you know.
Julien
Problem is that if the ecu measures resistance, those tps will be of no use. Moreover, I've found the spec sheet and they give an output voltage of 0.5 to 4.5 V, which may be a problem. Maybe the Mbe ecu can be reprogrammed to accept those inputs?
I've written to the company, we'll see what they answer.
Julien
I've written to the company, we'll see what they answer.
Julien
Hello,
this looks very good indeed! Oddly enough, it looks like it's the same as the one I've found on Borla induction website : http://www.borlainduction.com/throttle-position-se...
Their throttle potentiometer looks very similar to the one of the Cerbera. Could be a good solution? Even better as those Penny+Giles are made in UK!!! Another interesting fact is Iread that topcats use them on their race car. I would be surprised if they hadn't put some on some Cerbs if it's possible!!!!
I thinks it's really easy to test if they match with the original throttle pots :
- set your pots properly
- check that both pots give the same signal at any point of the operation range (so there are no discrepencies in the linkage function)
- change only 1 pot with the new hall effect sensor
- chack that both pot and hall effect TPS give the same value
If both still match, you're good to go! Then it's only a question of reliability.
If this does not work, I have an answer from acuity. They are ready to make some TPS for our cars, but need a group buy paid in advance to be sure to pay for the engineering costs, and say the sensors will need a machined casing because of the small amount of Cerbs / TVR on the road. They guess the price will be at leat 300USD for a set (i.e. pair). I think for now the Penny+Giles solution is more worth investigating, but acuity may be a good other solution if P+G is no good.
Julien
this looks very good indeed! Oddly enough, it looks like it's the same as the one I've found on Borla induction website : http://www.borlainduction.com/throttle-position-se...
Their throttle potentiometer looks very similar to the one of the Cerbera. Could be a good solution? Even better as those Penny+Giles are made in UK!!! Another interesting fact is Iread that topcats use them on their race car. I would be surprised if they hadn't put some on some Cerbs if it's possible!!!!
I thinks it's really easy to test if they match with the original throttle pots :
- set your pots properly
- check that both pots give the same signal at any point of the operation range (so there are no discrepencies in the linkage function)
- change only 1 pot with the new hall effect sensor
- chack that both pot and hall effect TPS give the same value
If both still match, you're good to go! Then it's only a question of reliability.
If this does not work, I have an answer from acuity. They are ready to make some TPS for our cars, but need a group buy paid in advance to be sure to pay for the engineering costs, and say the sensors will need a machined casing because of the small amount of Cerbs / TVR on the road. They guess the price will be at leat 300USD for a set (i.e. pair). I think for now the Penny+Giles solution is more worth investigating, but acuity may be a good other solution if P+G is no good.
Julien
Hello,
So, I have an answer from acuity and penny+Giles
Acuity sound like they will give some good support to the project, though they will need some help to source an original pot and for testing.
P+G sent me directly to Jenvey, who sell a version of their sensor, saying that this may do the trick, no more. Sensor is the same as yours, Supateg, by the look of it. Still the best solution, I think, but no support to be expected, I'm afraid. I asked if th car would need a remap, but got the answer that they could not help, and there must be some forum somewhere ☺️ not very helpful.
Supateg, if you would be kind enough to test your pot? If you don't have the time, I'd be willing to buy it from you to make the test, as it looks like it's a direct fit with all the right plugs?
Julien
So, I have an answer from acuity and penny+Giles
Acuity sound like they will give some good support to the project, though they will need some help to source an original pot and for testing.
P+G sent me directly to Jenvey, who sell a version of their sensor, saying that this may do the trick, no more. Sensor is the same as yours, Supateg, by the look of it. Still the best solution, I think, but no support to be expected, I'm afraid. I asked if th car would need a remap, but got the answer that they could not help, and there must be some forum somewhere ☺️ not very helpful.
Supateg, if you would be kind enough to test your pot? If you don't have the time, I'd be willing to buy it from you to make the test, as it looks like it's a direct fit with all the right plugs?
Julien
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