throttle cable not returning.

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throttle cable not returning.

Post  boozee on Sun Jan 05, 2014 1:18 pm

has anyone else got a problem with the throttle cable not returning properly. cant seem to get throttle to return on its own.it will only return half way.
ive put a new throttle cable on but still the same. thinking of putting a spring on the outside of carb to pull it back, don't think the loop on cable helps (using standard carb).cheers andy.

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Re: throttle cable not returning.

Post  Thackers on Sun Jan 05, 2014 1:24 pm

Mine is the same, are you using the standard throttle set up or a quick type throttle? If it's standard with the worm drive thing in the twist tube, then it's not the best form of cable movement and I would think the worm slows the return of the carb slide.

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Re: throttle cable not returning.

Post  Thackers on Sun Jan 05, 2014 1:25 pm

Oh forgot to say, I'm not on a original carb but use the original throttle set up .

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throttle cable

Post  boozee on Sun Jan 05, 2014 1:36 pm

using standard carb and throttle set up.thinking of doing a reverse pull set up on carb to get rid of the loop in cable, or a spring on outside of carb.

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Re: throttle cable not returning.

Post  Scooter Paul on Mon Jan 06, 2014 4:20 am

A right angled motorcycle twistgrip will solve the problem. You may have to shorten the grip area of the tube. The original cable outer will probably be ok, saving you the hassle of recabling, but source a new inner with the small nipple at the carb end and a small solderless one at the twist grip end. The original Vega twistgrip is a poor design and the modification makes the world of difference.

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Re: throttle cable not returning.

Post  Snails on Tue Jan 07, 2014 2:28 pm

Mine is the same. I was wondering if the none return is an MOT fail?

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throttle cable not returning.

Post  boozee on Tue Jan 07, 2014 2:50 pm

I put a spring from top of carb down to crankcase and it seems to have solved the problem, throttle returns but now its a little stiff to twist. have to look for slightly weaker spring or get a reed valve kit  Smile 

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Re: throttle cable not returning.

Post  gc on Tue Jan 07, 2014 8:39 pm

Get a QA from Broady and a nylon lined throttle cable.They come in black and you hardly notice them once an original type grip is fitted.

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Re: throttle cable not returning.

Post  Snails on Wed Jan 08, 2014 12:16 am

Is that what you have GC? Any pictures?

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Re: throttle cable not returning.

Post  Scooter Paul on Wed Jan 08, 2014 9:14 am

Snails wrote:Mine is the same. I was wondering if the none return is an MOT fail?

Non return is a failure.

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Re: throttle cable not returning.

Post  Snails on Wed Jan 08, 2014 2:20 pm

Bugger

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Re: throttle cable not returning.

Post  Snails on Wed Jan 08, 2014 2:20 pm

boozee wrote:I put a spring from top of carb down to crankcase and it seems to have solved the problem, throttle returns but now its a little stiff to twist. have to look for slightly weaker spring or get a reed valve kit  Smile 

I'd also like a picture of this too if possible??

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Re: throttle cable not returning.

Post  Thackers on Wed Jan 08, 2014 2:31 pm

Ed, if you put quick action throttle into ebay there's loads on there. As for a mot fail. It might be true but I've never encountered trouble at testing time, mine doesn't snap back when the engine is off, but running with the vibration etc I'm pretty sure it does.
Awhile back on the Luna forum (now gone Sad ) someone posted the use of Shimano bike cables and outers. These have moved on a bit I would think so a good bike shop would sell a "trick" cable long enough to work a carb, it would be a bike gear change cable and outer. Perhaps Ebay again might throw up something

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Re: throttle cable not returning.

Post  Snails on Thu Jan 09, 2014 2:40 am

Thanks Dave - i might try the bike cable route as it sounds the easiest and really i just want something low hassle at this point - I've certainly had my fill of adding enhancements to my scoot and just want it on the road. That's why I was also interested in the spring idea Smile

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Re: throttle cable not returning.

Post  Snails on Fri Apr 11, 2014 2:20 am

Doh! Forgot all about this. Can anyone tell me if this is the sort of cable end that fits the quick action throttles?

http://www.lambrettaspares.com/spares/perfect-fit-nylon-lined-cables/cable,-throttle-complete,-nylon-lined-friction-free,-black-for-standard-carbs,-mb/mbl0676.html


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Re: throttle cable not returning.

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