Welcome to the Access Norton Forum. Login as a VIP member to remove the advertising banners.


One throttle cable

Classic Norton Commando Motorcycles.

One throttle cable

Postby madass140 » Sun May 21, 2017 9:47 pm

mylasttriton.jpg[img]mylasttriton.jpg[/img]
Access Norton VIP Paying Member
madass140
VIP MEMBER
Posts: 1697
Joined: Sun Nov 06, 2011 4:46 pm
Location: Philippines

Re: One throttle cable

Postby pommie john » Sun May 21, 2017 11:12 pm

Nice!
User avatar

pommie john
Posts: 822
Joined: Fri Nov 18, 2005 7:31 pm
Location: Brisbane, Australia

Re: One throttle cable

Postby Peter R » Sun May 21, 2017 11:48 pm

Looks good, Triumph triples use a similar setup, works well, with minimal effort on the twistgrip.
Peter.

Norton Commando 850 Mk2a
Triumph Trident T150T
BSA Goldstar DBD34
Benelli 250 sport special

Peter R
Posts: 206
Joined: Mon Dec 13, 2010 10:12 am
Location: Netherlands

Re: One throttle cable

Postby toppy » Mon May 22, 2017 1:19 am

What's the chances of this becoming another one of your products so we can all enjoy it?

Would it be hard to go a stage further and use two cables in the modern way one pull up the other pulls back down. As this with mean no need for such a strong internal throttle spring (something would have to locate the needle somehow of course) which would really make a difference to effort required.
"If we ignore the theory it should be quite good" Joe Craig

toppy
Posts: 836
Joined: Sun Dec 02, 2012 2:40 pm

Re: One throttle cable

Postby madass140 » Mon May 22, 2017 1:53 am

well I'll be using this on an upcoming project, whether it goes in to production depends on (1) interest in this conversion (2) production cost)
I wont entertain a push/pull cable setup.
I'm having some lighter Amal springs made at the moment.
As you can see on my sample I have not made provision for the choke cables as I dont need a choke in my climate, but it
production ones would accept the choke cables
mylasttriton.jpg[img]mylasttriton.jpg[/img]
Access Norton VIP Paying Member
madass140
VIP MEMBER
Posts: 1697
Joined: Sun Nov 06, 2011 4:46 pm
Location: Philippines

Re: One throttle cable

Postby grandpaul » Mon May 22, 2017 7:56 am

Very unique!

$$??
GrandPaul
author "Old Bikes"
too many bikes to list, including:
952 Prototype, MkIII Interstate, Combat Dunstall, Triton
User avatar
Access Norton VIP Paying Member
grandpaul
VIP MEMBER
Posts: 9743
View Photo Album - Images: 30
Joined: Tue Jan 15, 2008 1:11 pm
Location: Laredo (south) Texas

Re: One throttle cable

Postby BritTwit » Mon May 22, 2017 8:33 am

Would the carb balance be adjusted with the thumb screws and lock nuts that appear in the video?
1975 850 MKIII Commando
2013 961 Commando Cafe Racer
2006 Triumph Bonneville T100
2003 Ducati 999
User avatar

BritTwit
Posts: 865
Joined: Tue Aug 25, 2009 6:15 pm
Location: NYC

Re: One throttle cable

Postby madass140 » Mon May 22, 2017 8:56 am

yes the old idle screws become redundant and the slides are now set by the adjustable cable pulls. once they are both set, then adjust your idle with the
left side idle adjuster under the cable wheel. I'll try and post some pics tomorrow.
This unit is only prototype which I'm happy with, so there would only be minor changes on production units IF I produce them in volume.
Don
mylasttriton.jpg[img]mylasttriton.jpg[/img]
Access Norton VIP Paying Member
madass140
VIP MEMBER
Posts: 1697
Joined: Sun Nov 06, 2011 4:46 pm
Location: Philippines

Re: One throttle cable

Postby BritTwit » Mon May 22, 2017 9:08 am

Very clean design.
Something Amals have needed for years in my opinion.
Just curious why you say you would not entertain building a push/pull setup.
Can you elaborate a bit on why you feel this way?
1975 850 MKIII Commando
2013 961 Commando Cafe Racer
2006 Triumph Bonneville T100
2003 Ducati 999
User avatar

BritTwit
Posts: 865
Joined: Tue Aug 25, 2009 6:15 pm
Location: NYC

Re: One throttle cable

Postby baz » Mon May 22, 2017 9:24 am

looks really good ,is it easy to change needle position with this setup?
Access Norton VIP Paying Member
baz
VIP MEMBER
Posts: 586
Joined: Wed May 26, 2010 10:21 am

Re: One throttle cable

Postby Matchless » Mon May 22, 2017 10:11 am

I was thinking the same thing. On Triumph/BSA triples it is a pain in the backside to change needle position. If this Commando set up solves that then it would be a great idea.
Martyn.

Matchless
Posts: 429
Joined: Thu Dec 23, 2010 1:39 pm
Location: Lytham St.Annes , Lancs. England.

Re: One throttle cable

Postby Onder » Mon May 22, 2017 11:47 am

+1 on the PIA to connect the slide to the lift wire...no, make that +100!

Onder
Posts: 1157
Joined: Tue May 11, 2010 5:16 pm
Location: Albany, NY

Re: One throttle cable

Postby madass140 » Mon May 22, 2017 2:22 pm

thanks for the input, The sole idea of this conversion is to eliminate out of sync cables. Now to make it easier to adjust
needle position without removing the top of the carb... I'll have to put my thinking cap on...
mylasttriton.jpg[img]mylasttriton.jpg[/img]
Access Norton VIP Paying Member
madass140
VIP MEMBER
Posts: 1697
Joined: Sun Nov 06, 2011 4:46 pm
Location: Philippines

Re: One throttle cable

Postby baz » Tue May 23, 2017 12:24 am

madass140 wrote:thanks for the input, The sole idea of this conversion is to eliminate out of sync cables. Now to make it easier to adjust
needle position without removing the top of the carb... I'll have to put my thinking cap on...

No not without removing the carb top, although that would be brilliant!, Not sure about a t150 Trident set up that looks like yours, but a t160 really is a pain to change a needle position or slide cutaway,also the seals on the carb tops can be fiddly ,also wear in the bushes just a few thou throws the carbs out of balance, having said all that I'd much rather have a gantry than a cable splitter so mark me down for one , cheers
Access Norton VIP Paying Member
baz
VIP MEMBER
Posts: 586
Joined: Wed May 26, 2010 10:21 am

Re: One throttle cable

Postby madass140 » Tue May 23, 2017 1:19 am

stay tuned, I'm on the case.
Don
mylasttriton.jpg[img]mylasttriton.jpg[/img]
Access Norton VIP Paying Member
madass140
VIP MEMBER
Posts: 1697
Joined: Sun Nov 06, 2011 4:46 pm
Location: Philippines

Next

Return to Norton Commando Classic Motorcycles

Who is online

Users browsing this forum: andre1, Bob Z., crusadersports, madass140, marinatlas and 8 guests