Zenith 26VME Choke Spindle Spring

Technical questions and Maintenance advice post in here please
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philipangus
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Zenith 26VME Choke Spindle Spring

Post by philipangus »

Hi All

I'm looking for the 26 VME Carb spring that closes the choke. Does anyone have a spare they could let me have (name your "reasonable" price) or do you know of a source?

Also from a technical viewpoint would it matter if a not standard spring was used i.e. is its closing strength important or critical? It's probably easier to source a non-standard stronger spring than the original

The spring in question is shown in the pic below.

Thanks for any advice

Philip
Choke closing spring
Choke closing spring
IMG_6767 2.jpg (242.87 KiB) Viewed 292 times
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Neil Evans
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Re: Zenith 26VME Choke Spindle Spring

Post by Neil Evans »

A weak spring is essential here otherwise the choke flap would throttle the engine. The draw of the induction needs to be able to open the flap against the spring pressure...

That said, there are dozens of redundant 26VME's out there... in SU land... :thumbs:
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philipangus
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Re: Zenith 26VME Choke Spindle Spring

Post by philipangus »

Thanks Neil
Neil Evans wrote:A weak spring is essential here otherwise the choke flap would throttle the engine. The draw of the induction needs to be able to open the flap against the spring pressure...
Presumably this is when the choke flap is in the closed position - ie increased downdraft flips it open against the "weak" spring. When choke is Off I assume the spring has no function.

It's for a spare carb - so not vital at the moment.

Regards Philip
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Neil Evans
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Re: Zenith 26VME Choke Spindle Spring

Post by Neil Evans »

You've got it. If the flap was mechanically held shut you'd risk flooding the engine every time you used the choke...
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Bill
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Re: Zenith 26VME Choke Spindle Spring

Post by Bill »

philipangus wrote:Hi All

I'm looking for the 26 VME Carb spring that closes the choke. Does anyone have a spare they could let me have (name your "reasonable" price) or do you know of a source?

Also from a technical viewpoint would it matter if a not standard spring was used i.e. is its closing strength important or critical? It's probably easier to source a non-standard stronger spring than the original

The spring in question is shown in the pic below.

Thanks for any advice

Philip
Have you tried Burlin Fuel Systems? They do re-furbished carbs and may have one, or a source.
IMG_6767 2.jpg
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philipangus
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Re: Zenith 26VME Choke Spindle Spring

Post by philipangus »

Hi Bill

Thanks for the pointer - I think I have found the spring, but in another Carb they service, so I've ordered a couple at 14p each.

Regards

Philip
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Re: Zenith 26VME Choke Spindle Spring

Post by Bill »

You are welcome Philip. That's what this forum is all about.
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philipangus
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Re: Zenith 26VME Choke Spindle Spring

Post by philipangus »

I like this set up of one recently sold on an auction site. LOL
Screen Shot 2017-04-07 at 22.54.32.png
Screen Shot 2017-04-07 at 22.54.32.png (227.07 KiB) Viewed 244 times
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