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A A A A Author Topic: Temperature sender dimension (length)?  (Read 173 times)

bahn88

Temperature sender dimension (length)?
« Started on: 15-Sep-19, 14:24 »
Hi
I am aiming to fit an accessory temperature gauge and have a M16x1.5 adapter to take a 1/8PT (BSPT) sender for a Japanese gauge.
Can someone tell me what length is the OE Honda sender (from under the "bolt head" to the tip)?
Should I aim for the same length/close as possible or is this irrelevant as the sender sits in coolant at the bottom of the thermostat?


TIA

John

J.C.

Re: Temperature sender dimension (length)?
« Reply #1 on: 15-Sep-19, 17:02 »
26mm from under the hex head to the tip. The last step is 11mm long and from the final thread base to the tip is 15.3mm.


J.C.

Re: Temperature sender dimension (length)?
« Reply #2 on: 15-Sep-19, 17:34 »
I suppose ideally you'd want  the sensor out in the main stream of coolant but I suspect that having it be less in the flow would not have much impact on the temp sensed.

bahn88

Re: Temperature sender dimension (length)?
« Reply #3 on: 15-Sep-19, 18:38 »
Thanks for the reply-ideally I might need a longer sensor at the thermostat site based on your measurements
I was also thinking bout putting the sensor at the upper radiator house (using a sleeve) but ain't seen anything made with a 1/8 BSPT port as yet. (yes the solution might be to make one...)

Might try for the compatible longer sensor at thermostat first tho'.....


Cheers


J.C.

Re: Temperature sender dimension (length)?
« Reply #4 on: 15-Sep-19, 19:37 »
When I adapted my temp gauge on a CX500 a few years back I didn't even give any thought to the length of the sender and used one of these (bunch of dead links but the first few are enough to show):

https://motofaction.org/part-reviews/aeroflow-m16-npt-18-thread-adapter-review-honda-cx500-gl500-cx650-gl650/

...with the sender that came with the gauge - was shorter from memory - and had no issues.

If I had thought to be concerned about it I might have wondered at the time but it didn't even occur.

muzza

Re: Temperature sender dimension (length)?
« Reply #5 on: 16-Sep-19, 04:27 »
the sender probe will be  immersed in the coolant flow , so even if it is slightly out of the main stream it will only be one or two degrees less than the main flow temp

bahn88

Re: Temperature sender dimension (length)?
« Reply #6 on: 16-Sep-19, 18:45 »
Thanks for all the replies.

The gauge itself is the "Aquaprova" digital- was going to go a traditional "clock" type gauge but a lot of builders/suppliers wouldn't state that "Autometer " etc was going to be weatherproof........
here's the link for anyone interested:

https://www.shindypro.com/temp_gauge.html

Anyone planning something similar-can't speak highly enough of Shindy (USA based)-that are happy to do "special orders." Rather than buy from ebay-they'll communicate with both you and the Japanese supplier to source what you need.

 


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