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30mm dellorto throttle cable routing

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30mm dellorto throttle cable routing

Postby Granty » Wed May 22, 2019 10:20 pm

Replaced a standard carb / airbox set up with 30mm dellorto. I need to replace the throttle cable with an extra long one, I've taken out the airbox, what's the best route to run the new throttle cable so it comes into the carb from the "choke" side? Thanks G
Granty
 
Posts: 254
Joined: Fri Jun 20, 2014 3:11 pm

Re: 30mm dellorto throttle cable routing

Postby Warkton Tornado No.1 » Thu May 23, 2019 12:28 pm

Traditionally, an extra long cable of a small gauge, going down the RH underside of the legshields. Where it exits near the choke control, loop it over the top to the carb. Alternatively, an elbow similar to the choke cable elbow will work & be neat & compact & allow a carb inlet elbow & filter to be used.

Save yourself a packet by buying the stainless inner/outer from a cycle spares merchant. Tandem cables are superb ;)

Similarly, any cable fittings are available from 'ped merchants for far less than 'Lambretta merchant' money :)

(I always use the gear change pulley for 30+ mm carbs & add a 'Serveta' type spring to the throttle rod to help self closing. It doesn't have to be a specific torsion spring on the rod as any tension spring that fits the rod snugly can be adapted to do the same job. One end is clamped via the rose joint clamps, the other end goes into the eye of a split pin fitted the spring length or so away to snap the pulley shut. The headset may need clearance for a bigger pulley but a stop can be created by adding an M5 screw & nyloc nut through the unused pulley cable hole)
Warkton Tornado No.1
 
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Joined: Sun Jan 11, 2015 1:27 pm

Re: 30mm dellorto throttle cable routing

Postby Warkton Tornado No.1 » Thu May 23, 2019 3:59 pm

Traditionally, an extra long cable of a small gauge, going down the RH underside of the legshields. Where it exits near the choke control, loop it over the top to the carb. Alternatively, an elbow similar to the choke cable elbow will work & be neat & compact & allow a carb inlet elbow & filter to be used.

Save yourself a packet by buying the stainless inner/outer from a cycle spares merchant. Tandem cables are superb ;)

Similarly, any cable fittings are available from 'ped merchants for far less than 'Lambretta merchant' money :)

(I always use the gear change pulley for 30+ mm carbs & add a 'Serveta' type spring to the throttle rod to help self closing. It doesn't have to be a specific torsion spring on the rod as any tension spring that fits the rod snugly can be adapted to do the same job. One end is clamped via the rose joint clamps, the other end goes into the eye of a split pin fitted the spring length or so away to snap the pulley shut. The headset may need clearance for a bigger pulley but a stop can be created by adding an M5 screw & nyloc nut through the unused pulley cable hole)
Warkton Tornado No.1
 
Posts: 2112
Joined: Sun Jan 11, 2015 1:27 pm

Re: 30mm dellorto throttle cable routing

Postby Granty » Fri May 24, 2019 9:07 am

Easier job than I thought. Thanks for the help - G
Granty
 
Posts: 254
Joined: Fri Jun 20, 2014 3:11 pm


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