Promax Hornets Bleed Kit

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dmorton
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Promax Hornets Bleed Kit

Postby dmorton » Wed Oct 03, 2012 08:41 am

I have a set of Promax Hornet brakes on one of my bikes.

They share the same pads as Avid Juicy's..... just a thought, is it possible that the Avid bleed kit will work with the Promax's too?

dmorton
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Re: Promax Hornets Bleed Kit

Postby dmorton » Wed Oct 03, 2012 09:09 am

just add a bit more:

Avid Bleed Kits come with DOT 5.1 (I already have one of these and Avid brakes on other bikes)

Seems Promax brakes need DOT 4....

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nicklouse
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Re: Promax Hornets Bleed Kit

Postby nicklouse » Wed Oct 03, 2012 09:27 am

link to brakes?

fluid makes no difference.

other than Dot5 and mineral.
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dmorton
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Re: Promax Hornets Bleed Kit

Postby dmorton » Wed Oct 03, 2012 09:40 am

http://www.leechi.com.tw/index.php?language=en&mod=2 HORNET (DSK-907)

DOT is temperature rating right?

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nicklouse
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Re: Promax Hornets Bleed Kit

Postby nicklouse » Wed Oct 03, 2012 09:53 am

dmorton wrote:
DOT is temperature rating right?

what do you mean?

re the brakes the answer is no as the Hornets have two different threads while the avids use the same thead.

see the topic in the FAQs about making your own bleed kit
along with this

http://www.google.co.uk/url?sa=t&rct=j& ... 8Q&cad=rja
"Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."

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dmorton
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Re: Promax Hornets Bleed Kit

Postby dmorton » Wed Oct 03, 2012 10:04 am

nicklouse wrote:
dmorton wrote:
DOT is temperature rating right?

what do you mean?



DOT relates to the brake fluid boiling point. Seems DOT 3, 4 and 5.1 are compatible with each other. DOT 5 isn't. http://www.opieoils.co.uk/pdfs/tech-articles/Brake-Fluid-Explained.pdf

Cheers for the info, I'll look into making my own kit

lpretro1
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Re: Promax Hornets Bleed Kit

Postby lpretro1 » Wed Oct 03, 2012 11:24 am

DOT refers simply to 'Department of Transport' - the application originally being for cars. DOT 4 and DOT 5.1 can be mixed - boiling point is different so mixing them reduces the boiling point towards the lower performance of the DOT 4.
DOT and Mineral fluids CANNOT be mixed. DOT 4 & 5.1 are a synthetic poly alkalene glycol ester material. DOT 5 is silicone based so quite different and cannot be used. DOT 4 can readily be bought cheaply from automotive stores. DOT 5.1 you'll probably need to get from a cycle store so is more expensive.

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mrmonkfinger
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Re: Promax Hornets Bleed Kit

Postby mrmonkfinger » Wed Oct 03, 2012 11:26 am

lpretro1 wrote: DOT 4 and DOT 5.1 can be mixed - boiling point is different so mixing them reduces the boiling point towards the lower performance of the DOT 4.


IIRC, DOT4 does not absorb water so easily as DOT5.1, so more suited to day-to-day applications.

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The Rookie
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Re: Promax Hornets Bleed Kit

Postby The Rookie » Wed Oct 03, 2012 11:49 am

Except as bikes run sealed systems water absorbtion is a none issue......

OK they are MEANT to run sealed systems, if it leaks then it's not!

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bennett_346
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Re: Promax Hornets Bleed Kit

Postby bennett_346 » Wed Oct 03, 2012 12:03 pm

The Beginner wrote:Except as bikes run sealed systems water absorbtion is a none issue......

Its when its in the tub that it absorbs the water.

dmorton
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Re: Promax Hornets Bleed Kit

Postby dmorton » Wed Oct 03, 2012 15:15 pm

Looks like all I'd need to do the Promax's then is a pair of nipples.....

Got the syringes, hoses and fluid

Anyone know where I can get nipples with the correct threads?

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The Rookie
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Re: Promax Hornets Bleed Kit

Postby The Rookie » Wed Oct 03, 2012 15:23 pm

bennett_346 wrote:
The Beginner wrote:Except as bikes run sealed systems water absorbtion is a none issue......

Its when its in the tub that it absorbs the water.

Only if your pot leaks, again if it doesn't NONE issue!

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bennett_346
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Re: Promax Hornets Bleed Kit

Postby bennett_346 » Wed Oct 03, 2012 15:46 pm

The Beginner wrote:
bennett_346 wrote:
The Beginner wrote:Except as bikes run sealed systems water absorbtion is a none issue......

Its when its in the tub that it absorbs the water.

Only if your pot leaks, again if it doesn't NONE issue!

Which most do, plus once you've opened it it's exposed to moisture rich air permanently.

dmorton
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Re: Promax Hornets Bleed Kit

Postby dmorton » Thu Oct 04, 2012 08:26 am

The Beginner wrote:Except as bikes run sealed systems water absorbtion is a none issue......


In theory that's true but nothing is ever 100% water tight. For this very reason brake fluid in cars is advised to be changed every 2 years, regardless of mileage covered. The brake fluid will absorb moisture over time.

Any thoughts on nipples?

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nicklouse
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Re: Promax Hornets Bleed Kit

Postby nicklouse » Thu Oct 04, 2012 08:27 am

dmorton wrote:
The Beginner wrote:Except as bikes run sealed systems water absorbtion is a none issue......


In theory that's true but nothing is ever 100% water tight. For this very reason brake fluid in cars is advised to be changed every 2 years, regardless of mileage covered. The brake fluid will absorb moisture over time.

Any thoughts on nipples?

but car systems are not closed.
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dmorton
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Re: Promax Hornets Bleed Kit

Postby dmorton » Thu Oct 04, 2012 10:04 am

nicklouse wrote: but car systems are not closed.


Because they have a fluid reservoir?

Don't some MTB brakes work in this way too?

Still if the bike brake fluid is sat in a tub with a closed lid in your shed that's similar to it being sat in you car's brake fluid reservoir, i.e. a tub with a lid?


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