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You mention excessive sparking on commutator. Has the comm been burnished with a canvas block to establish a good patina? Not sure about the 25vs 27,12v 24v. Past overcranking can throw the solder from the winding to comm connection, was this in good shape? Sluggish you say, the field windings weren't grounded but could some of them be shorted together? Usually happens in conjuction with to ground, but I've seen both. We used to have a drill press airimpact to remove the winding screws on the outside, but if that stripped the heads (usually they were flat or phillips), a center punch on angle at the outside edge of the screw with a good hammer does the trick, making sure to start a decent recess before you go to a steep angle. Messes the heads a bit though. Just my two cents. drew

As taken from our s11a 1970: width inside channel 7cm, height inside channel 3cm. Sorry about focus, didn't know until I was in from the snow. Let me know if you need other measurements . Drew

The diaphragm material I used was from Wriason Seals in Vancouver BC, 1/32 fuelsafe bunaN fabric reinforced. Google will bring up their website. The red blocks I had lying around, but they are made from red electrically rated fiberglass board that a good electrical supplier should be able to get if they don't already have it. Material dimensions I used are 5"Lx4"Wx1/2" thick. My thoughts were that this material would stay stable over time for possible future use, not to mention I don't have a milling machine! I made the recess with a small pilot hole size of the hole in original diaphragm, adjustable circle cutter, for outside diameter, and then routered out the rest. The top I did with the circle cutter and a spade wood bit. Drew

Would 1970 series 11a be the same?

I hope this is of value to someone. I took some buna-N 1/32 fabric reinforce diaphragm material, made a jig of fireboard and made my own diaphragms that work fine so far!:coffee: Here is the setup unassembled: As seen in the photo, I have a recess that matches the original parts depth so I can recreate the volume of the diaphragm and it has a center hole to keep the new material in place while working the next step.Here I have the material in place with a drift centering it and a socket the size of those little brass disks that bolt onto the diaphragm. I press the material down while the bolts are loosely tightened so the material slides into place. Then I clamp it down tight and punch the mounting holes with a drift: Final trimming I did in place, no fusing with alignment this way. Maybe this has been done but I've not seen it in posts anywhere so I've made this my first post to the site. Comments? And yes, I need practice with posting photos, Not sure how to fix it and I don't want to lose everything! Drew

Welcome from another in the cold north, albeit a little west of you. Drew:-)

Welcome to the forum! Cheers, Drew

Not that your going to need it any time soon but if ever faced with high torques you can use a tool called a torque multiplier. Used in conjunction with a torque wrench. Used alot in heavy equipment, if you google it theres videos. My ferret started smoking recently too but all the time. Bad accel and economy diaphragms in my case.

Hi all, this is indeed a large forum to navigate, took me a minute to find the newmembers introduction area! I've been into the hobby for some years now with a series11a landy battlefield ambulance and a series one 1952 landy. Recently I've been running a ferret mk2/3. Always wanted one. Love driving them all. My background of knowledge lies in HV generation with thermal generation experience (as well as automotive elctrical in my younger years, perfect for lucas). Of interest, I've rebuild the landy fuel switch which looks identical to the ferrets from what I can tell with a teflon based compressable gylon gasket material, never leaks, and always smooth as silk. Contact me for details if anyone wishes. I'll be posting on another thread soon as my solex carb is foobared and I seem to be hitting dead ends. I forward to conversing with you. Incidentally if anyone who operated my machine (ferret) is still around I'd be interested in more anecdotale stories for use at vehicle displays and car shows! Drew Swan Salmo, BC Canada