The place to discuss all matters relating to David Brown Tractors. You will need to register your user name before you can post. If you have already registered could you please make sure that your location details have been completed. Go to My Account in the Main Menu on the left, and then go into "Edit Your Information" and complete your location details. Give the Country (and State/Province if you wish) if outside the U.K. County if within the U.K. Location details helps other members if you need spares, technical advice, or the nearest practical help.


David Brown Tractor Club Ltd
Forum/website Disclaimer

1. This [forum/website/chat room] and the advice and opinions expressed herein is not a solution for mechanical, electrical, valuations, other problems, breakdowns or issues experienced in relation to the vehicles referenced.

2. If reliance is thought to be placed on any of the information guidance or input provided such information will be expressly confirmed as appropriate to be relied upon.

3. In the absence of any such confirmation no reliance should be suggested or inferred.

4. Members must not disclose information to 3rd parties in anticipation that reliance will be given by non-members.

5. Non-members must not purport to give advice on behalf of David Brown Tractor Club.

6. If you or someone you know is experiencing difficulties or repeated breakdowns you must seek assistance for an appropriately qualified expert who holds themselves out as such.

7. Any comments are free of charge and made or posted on an ex gratia basis. No member or non-member may advertise their professional services

Any user inactive for more than 3 months will automatically be deactivated, please contact if you would like to be reactivated.

Please be aware that your user name and entered location can be seen by all members. We only store information you have entered which is your email address and username, your IP is also stored, we have no access to private passwords.

If you do not agree with your information being stored, please do not register an account, If you wish to unsubscribe at any time please email giving your username.

Amended 27/10/18

Moderators: Segrie61, admin

User avatar
Posts: 835
Joined: Tue Oct 11, 2011 6:18 am
Location: beautiful Coopernook NSW. near Taree. NSW. Australia

Re: Solex-30FV

Post by cobbadog » Thu Nov 07, 2019 5:22 am

Well I went way back to the beginning of the basics even looking under the base plate of the dizzy and found the bob weights were free and in working condition so this was sorted. Re-assembled the dizzy and checked that I was at the "M" mark on the flywheel which gives me 7' BTDC and on compression stroke with both valves fully closed. Gaped the points to 0.012" and connected the test lamp to find where the points were just breaking and the light goes out, locked in place. Again cleaned the plugs check the gap at 0.022" and replaced them along with the HT leads. Went around and switched the fuel on waited a bit to see if any leaks came along then started the engine, broom broom. Let it run for a while and connected the air cleaner back up and a slight tweak with the mixture screw and ran it at various revs. Still a tiny bit rich at idle but after all this crap I am happy with that. Took it out for a road test and it went well. About a 15 minute run was enough to say that it is running and almost better than before the paint job. The governor seems a bit slow in opening and I am not sure if this is an adjustment or a throttle linkage issue but it still went well pulling away easily up a steep hill at very low revs in H 3rd so this is a good thing. I finally found the markings for this dizzy, it is a CA10 model made in 11/53. Will do a bigger road run when we get back from a short break but it should be all good.
Thanks to all replies and ideas in helping to solve this issue.

Geoff for the last 40 odd years I have used NGK plugs for just about everything I have with not one failure so I stick with them. Te only champion plugs I use are the ones in our old Hit n miss engines, no cross reference to NGK on them. The free play I mentioned in the shaft in the dizzy was the auto timing movement not wear n tear. Next to no movement up and down. With all the settings double checked I still do not get any marks from the flywheel with my timing light yet the engine starts well and revs through the range well and now with no hesitation.

baron_beeza, I just checked what size the choke tube is in this carby and it is a 30-24 if that is of any help to you.

Post Reply

Who is online

Users browsing this forum: No registered users and 26 guests