Spit brake relay valve..

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Member for

18 years 4 months

Posts: 2,605

Hi guys.
In the process of rebuilding our early brake relay for the Spit,the one that goes behind the rudder bar.We pulled it apart to draw it up and found it full of dirt and the rubbers perished.Otherwise in good condition.Is there somewhere we can get new rubbers ,diaphragms and what type of grease is used on the bearings?Will get some pics soon..
cheers Ross:cool:

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Member for

18 years 4 months

Posts: 2,605

Hello pics added??Included in the assembly there looks like a truck tyre valve.Is that a standard WW2 part??

Member for

18 years 3 months

Posts: 322

Hello pics added??Included in the assembly there looks like a truck tyre valve.Is that a standard WW2 part??

Yeh that schrader valve is a standard part, not sure of part number though. As for getting seals made hmm? Dont get em made in and fit em if the spit is going to come under the bowler hatted numpties in uk, if so you'll need to get the items sprinkled with holly water, blessed by the pope, and the original drawings sanctioned and authenticated, oh and original material. Apart from that, you'll be fine.

good luck.

Mick.

Member for

24 years 8 months

Posts: 2,835

Stunning drawing Ross. Is that Solidworks?

Good luck with your seals - hope someone can come up with an answer for you - might be difficult...

Member for

18 years 4 months

Posts: 2,605

Thanks

Stunning drawing Ross. Is that Solidworks?

Good luck with your seals - hope someone can come up with an answer for you - might be difficult...


Hi,
We do use Solidworks but this assembly we have done up in ProDesktop which is a students version of ProEngineer.We have three guys doing the designs.One uses ProD exclusively,the other uses Solidworks exclusively and I mix between the two,rather unsuccesfully that is..We also use CAD as sometimes it is quicker and easier in some places.
With the rubbers we might try a brake reconditioning shop.
Cheers

Member for

24 years 8 months

Posts: 8,464

The seals are the same as for the flap selector, so yes, it is a standard part.

There is no source of original parts though - the conical seals will be easy enough to make - something like the Sealjet process will work.

The teeny tiny ones that are part of the valve are a different story. Makeable, but tricky!

Bruce

Member for

24 years 8 months

Posts: 2,835

Three programs eh? That's impressive. I'd like to start using a CAD program for the Whitley. Is there a straight forward but very good program you could recommend at all?

Hi,
We do use Solidworks but this assembly we have done up in ProDesktop which is a students version of ProEngineer.We have three guys doing the designs.One uses ProD exclusively,the other uses Solidworks exclusively and I mix between the two,rather unsuccesfully that is..We also use CAD as sometimes it is quicker and easier in some places.
With the rubbers we might try a brake reconditioning shop.
Cheers

Member for

18 years 4 months

Posts: 2,605

Thanks guys

The seals are the same as for the flap selector, so yes, it is a standard part.

There is no source of original parts though - the conical seals will be easy enough to make - something like the Sealjet process will work.

The teeny tiny ones that are part of the valve are a different story. Makeable, but tricky!


Thanks Bruce..Will look into it.Still awstruck on the complexities of British assemblies..
Hi Whitley Project..
Try these out here and see what suits you best..
http://www.freebyte.com/cad/cad.htm
Basicly CAD is just like Tech Drawing of old but instead of rulers,squares and compasses all the lines are computer generated.Here is a screencap of CAD with one of our designs..All do different things better than others.
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