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-   -   Durometer (https://www.rctech.net/forum/nitro-road/156489-durometer.html)

cdelong 03-28-2007 06:20 PM

Durometer
 
anyone have a good lead on where to buy a durometer?

I'm looking for the type with the dual dials to record the max reading ;)

rmdhawaii 03-28-2007 06:27 PM

There are some leads in this thread:
http://www.rctech.net/forum/showthread.php?t=117449

Joe Chaplow 03-28-2007 06:30 PM


Originally Posted by cdelong
anyone have a good lead on where to buy a durometer?

I'm looking for the type with the dual dials to record the max reading ;)

mitutoyo makes some, here is a link. dont know if their durometer will work for this application. on the site, you can locate a dealer
http://www.mitutoyo.com/TerminalMerc...spx?group=1346

cdelong 03-29-2007 09:24 AM

any idea what type durometer I need for SURE. I'm getting different input's from varying manufacturers.

REX offered for me to send a few different hardness of tires and check them out for me.

Jspeed 03-29-2007 09:39 AM

Durometer
 
Cdelong

Got any tires left after Homestead? :blush:
http://www.sgrid.com/2007/march/homestead2.jpg

cdelong 03-29-2007 12:44 PM

Not many.....


Jaco says the proper durometer type is an "Asker C" type.

rmdhawaii 03-29-2007 01:14 PM


Originally Posted by cdelong
Jaco says the proper durometer type is an "Asker C" type.

PTC has Asker C durometers... but they price. :eek:

http://www.ptc1.com/durometers_asker.html

Jspeed 03-29-2007 02:16 PM

Durometer
 
I can't wait to go back next year, I hope to be able to race more that just 2 Quals.

I had a great time anyway, much better than many other race weekends I've attended. How far are you from "The Glen"?

brianhatesnitro 03-29-2007 02:35 PM

Those prices can't be right, I've seen too many people at the track with durometers for them to have paid $500. maybe they're getting them used from pawn shops or something like that but I believe I've only seen one style in use, but it's not any of the ones listed in these threads so there might be a slightly lower but usable grade out there.

FREELANCE_RCer 03-29-2007 03:37 PM

I used maxmod durometer. ;)

rmdhawaii 03-29-2007 03:51 PM


Originally Posted by brianhatesnitro
Those prices can't be right, I've seen too many people at the track with durometers for them to have paid $500. maybe they're getting them used from pawn shops or something like that but I believe I've only seen one style in use, but it's not any of the ones listed in these threads so there might be a slightly lower but usable grade out there.

There are quite a number of different durometers to measure different things. You would have to get the brand and model number from these guys to figure out exactly what these are using. If you have the wrong type of durometer, it doesn't matter how cheap it was. :sneaky:

I guess it really depends on what you plan on getting out of the measurement. As I understand it, getting consistent accurate readings without a stand is not so easy. If you're just trying to measure the shore relative to other tires, then it's either a higher or lower value. If you're trying to get some type of NIST-based measurement for re-rating tire shores, that's another story.

rmdhawaii 03-29-2007 03:53 PM


Originally Posted by FREELANCE_RCer
I used maxmod durometer. ;)

What has been your experience with this meter? If it says 40 shore on the box, what type of reading do you get - and if you take the reading more than once, does it vary a lot?

fraz 03-29-2007 04:18 PM


Originally Posted by cdelong
Jaco says the proper durometer type is an "Asker C" type.

I find this funny since Jaco has used nothing but color coded compounds until their fairly recent entry (couple years) into the nitro tire market. Where is Jack? What's the scoop, fill us in?


Originally Posted by brianhatesnitro
Those prices can't be right, I've seen too many people at the track with durometers for them to have paid $500. maybe they're getting them used from pawn shops or something like that but I believe I've only seen one style in use, but it's not any of the ones listed in these threads so there might be a slightly lower but usable grade out there.

Read 'em and weep! They are $450+ for the PTC durometers and the price has gone up in the past few years. The MaxMod ones are like $180-200 if you can find them (I am pretty sure MM is out of biz). I have a MM as well and it is a fine tool and awesome for the price.


Originally Posted by rmdhawaii
What has been your experience with this meter? If it says 40 shore on the box, what type of reading do you get - and if you take the reading more than once, does it vary a lot?

I talked with PTC at length and read their instructions as well as the ones from Paris. You always take multiple reading and then average to get your number.

I am sure I posted this long ago but I learned all of my durometer knowledge the hard and expensive way. Bought a PTC off ebay and found it wasn't right. Talked to PTC and they explained that while the Paris ones weren't being made anymore, they had the parts to update mine and they recalibrated it. I was told it is a "modified OO scale" with a custom indentor. They changed the spring, indentor, guage face, bezel, and recalibrated and I was good to go with a Paris duro. Total cost out the door ended up a tick over $400 and that was years ago.

fraz 03-29-2007 04:20 PM

Holy Cow!! The straight in front of the driver's stand for nitro!?! Must have made for some exciting pit stops!

rmdhawaii 03-29-2007 04:31 PM

Thanks fraz!

I will get a foam tire KB up after I get more of the engine KB done. Then we'll have all this info on foam, truers, truing, splits and durometers all in one place. :nod:


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