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Midget Choke -----HELP
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Finch661



Joined: 19 Feb 2009
Posts: 163
Location: Edinburgh, Scotland

PostPosted: Thu Feb 19, 2009 3:03 pm    Post subject: Midget Choke -----HELP Reply with quote

i am tinkering away with my 76 mg midget, but i am having some troubles with the choke. it seems that after about a week, the locking part is stripped, hence it does not lock. i am using the peg system for now, but i am wanting something a bit more perminant!

i was thinking of removing the mixture return springs then using a simple push/pull system, as seen on the classic mini for its heat control.

any thoughts on the matter?

thanks

rich Sad
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Rick
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Joined: 27 Apr 2005
Posts: 21110
Location: North-west UK

PostPosted: Thu Feb 19, 2009 5:53 pm    Post subject: Reply with quote

Hi Rich, why not just buy a new choke cable and surround? sounds a lot easier to me

Rick
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Various 1920s-1960s - Austin, Morris, Commer, Dodge etc.
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Finch661



Joined: 19 Feb 2009
Posts: 163
Location: Edinburgh, Scotland

PostPosted: Fri Feb 20, 2009 9:30 am    Post subject: Reply with quote

true, a very easy solution, but i have gone through 3 cables in the last 3 months. the average life is about 1-2 weeks..... quite annoying
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Rick
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Posts: 21110
Location: North-west UK

PostPosted: Fri Feb 20, 2009 9:43 am    Post subject: Reply with quote

by eck - are they modern repro ones?? if so might be worth trying to source an original unused BL part maybe?

R
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Various 1920s-1960s - Austin, Morris, Commer, Dodge etc.
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Kelsham



Joined: 18 Jan 2009
Posts: 349
Location: Llandrindod Wells Powys

PostPosted: Fri Feb 20, 2009 5:06 pm    Post subject: midget choke Reply with quote

Why are the cables failing? you do have a good earth strap to the engine. If this has a poor connection the return electrical path can go through the choke cable and cause it to heat up.
regards Kels.
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ukdave2002



Joined: 23 Nov 2007
Posts: 3497
Location: South Cheshire

PostPosted: Fri Feb 20, 2009 5:45 pm    Post subject: Re: midget choke Reply with quote

Kelsham wrote:
Why are the cables failing? you do have a good earth strap to the engine. If this has a poor connection the return electrical path can go through the choke cable and cause it to heat up.
regards Kels.


Good point Kels, I have also seen the same thing happen with throttle cables; glowing red as they try to deliver a few hundered amps! Shocked

If it is a manufacturing fault with the cables, what is the suppliers veiw?

Dave
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47p2



Joined: 24 Nov 2007
Posts: 2002
Location: Glasgow

PostPosted: Fri Feb 20, 2009 5:48 pm    Post subject: Reply with quote

Also make sure the cable is in as straight a run to the carb as possible
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Finch661



Joined: 19 Feb 2009
Posts: 163
Location: Edinburgh, Scotland

PostPosted: Sat Feb 21, 2009 1:21 pm    Post subject: Reply with quote

like i said, the choke doesnt lock when pulled out and twisted, it is completely stripped. it works great for about a week, then it slowly fails.
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Rich5ltr



Joined: 28 Mar 2008
Posts: 637
Location: Hampshire, UK

PostPosted: Sat Feb 21, 2009 7:45 pm    Post subject: Reply with quote

You need one of those spring operated choke control locking clips, I'm sure I saw one here a few days ago? Smile

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Finch661



Joined: 19 Feb 2009
Posts: 163
Location: Edinburgh, Scotland

PostPosted: Tue Feb 24, 2009 12:22 pm    Post subject: Reply with quote

well im using a peg at the moment, just wanted something a little bit more permanant (oh and i am using a lightened polycarbonate spring loaded choke locking clip........ a plastic one....) Laughing
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Scotty



Joined: 23 Nov 2007
Posts: 887

PostPosted: Tue Feb 24, 2009 1:23 pm    Post subject: Reply with quote

Hi Rich,

I had a 1975 Midget and if memory serves me correctly it was a "pull and twist" to lock the choke out at the desired position. Is it the "twist" that's wearing out?

Scotty.
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Finch661



Joined: 19 Feb 2009
Posts: 163
Location: Edinburgh, Scotland

PostPosted: Tue Feb 24, 2009 3:48 pm    Post subject: Reply with quote

yeah its the twist part. it works great with a new cable, but after a coupe of weeks it twists but then slips. very annoying! im using a clothes peg at the mo, i wnated to know if there is a conversion or a different type of choke mechanism i can use. i have an old mini aswell, that has no troubles
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Penman



Joined: 23 Nov 2007
Posts: 4148
Location: Lancashire

PostPosted: Tue Mar 03, 2009 12:10 pm    Post subject: Reply with quote

Hi
I have just been looking at an operators manual for a Wolseley 15/50 and have noticed this instruction for when refitting the choke cable.

Give the inner wire a clockwise twist (looking from the end) before tightening the locking nut/bolt.
This ensures correct function of the control locking device.

The picture shows the inner cable as a Bowden twisted cable and this would appear to be utilising the cable's natural tendency to straighten as a means of keeping the choke pull end in the locking position.
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