timing belt gears

[firebird]

Hi

Tel, definitely not a waste of time. Sorry I didn't reply sooner. Many thanks for taking the time to show us.
:bow: :bow: :bow:

Cheers

Rich

 

[tel]

Thanks blokes - I probably seemed grumpier than I actually was - having some problems here (unrelated).

 

[Ken I]

We all have days like those.

According to my wife I'm that way most days.

Ken

 

[tel]

Ooooh yes! And having kids (who are now all in their 30's) makes it worse - should have stuck to breeding goldfish!

 

[Brian Rupnow]

Tel---Thank you for that very informative post. That was great, and I have filed it away for future reference. As far as kids go----If I had known 30 years ago how great grandchildren were, I'd have had them first and just skipped the kids!!!---Brian

 

[Lew Hartswick]

As far as kids go----If I had known 30 years ago how great grandchildren were, I'd have had them first and just skipped the kids!!!---Brian

BUT even they grow up and become 20s . :-(
...lew...

 

[Brian Rupnow]

BUT even they grow up and become 20s . :-(
...lew...

Yes, but I'll be dead by then!!!

 

[firebird]

Hi Tel and Brian and Lew

I just got my first grand daughter, she's 6 month old now and absolutely brilliant ;D ;D ;D

Just one thing though, how did we get from timing belt gears to grandchildren :big: :big: :big:

Bit like me in my shed I suppose, I start off making one thing and end up somewhere completely different but hey ho its great fun.

Cheers

Rich

 

[firebird]

Hi

Well I have been playing about with this a little more and I'm now getting somewhere. I am going to use belts with the T5 profile, they are readily available and reasonably priced. I will have to make quite a few pulleys for a few projects I have in mind so I decided to make a bit of kit that I will be able to use many times. Basically what I have done is to use the slitting saw idea but regrind the blade. First of all here's a sketch of the T5 tooth profile.

Next job was to make a gadget that fits into the lathe tool post and a grinding wheel mounted in the chuck on an arbor. I have used the insides of an old wiper motor to control the tool.



Here's a video of the tool in action. Note I have the lath covered with newspaper to protect it from grinding dust.

[ame]http://www.youtube.com/watch?v=W-SId6h5ans[/ame]

The slitting saw after re grinding



Setting up in the mill.



About half way round cutting a 24 tooth pulley. The blank is actually 2 pieces of 6mm aluminium clamped and turned together as a test piece.



Finished cutting



The belt is a good fit in the pulley.



It needs the tops of the teeth rounding over slightly but I can do that easily with a small file.
I think I have it cracked now. I have a lot more photos if anyone is interested in more details.

Cheers

Rich

 

[Brian Rupnow]

Very nice work Firebird. I like your converted wiper mechanism.---Brian

 

[Groomengineering]

Looks like you got 'er whipped Rich, great job! I'll have to remember this one.

BTW, congratz on the little one

Cheers

Jeff

 

[firebird]

Hi

Thanks Brian, the wiper motors have a very nice worm and gear in them with almost zero backlash.

Thanks Jeff

Cheers

Rich

 

[Twmaster]

Rich,

What sort of auto are you getting those wiper drives from?

 

[firebird]

Hi Mike

I work in the motor trade so any car we scrap I try to get the wiper motor and the radiator fan motor. Ford and Vauxhall are the most common ones I get and seem to be a standard motor fitted across the range.

Cheers

Rich

 

[Chitownmachine]

Wiper gear train?? THATS AWESOME!!! I was actually looking for something like this, because I like to fool around with tool making! THANKS!!

 

[firebird]

Hi

They have a very useful mechanism inside



Uploaded with ImageShack.us



Uploaded with ImageShack.us

Cheers

Rich

 

[Twmaster]

Excellent. I'll keep my eyes open for a used assembly like that.

 

[Chitownmachine]

I second that! Great reuse!!