41
Chatter / Re: BBB 2025
« Last post by Chug on May 30, 2025, 09:46:24 PM »Talking of drones have Dom or Dave got any previous BBB footage? I would like to see how it looked before our Mabel mobile arrived.
Recent Posts
42
Chatter / Re: BBB 2025
« Last post by Tony on May 29, 2025, 04:56:35 PM »I'll be there. will bring the usual vin fuel and kerro.
Dom's got his drone flier's license and qualifications now - I'm sure he'd like a second go on your DJI drone!
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Chatter / Re: BBB 2025
« Last post by Tony on May 29, 2025, 04:48:15 PM »That's actually really good news otherwise me and Dom could only have done some of Saturday, and now we can do the whole weekend!
We would of course love to be there if you'll have us
We would of course love to be there if you'll have us
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Vehicles / Re: Mercedes W202 saddle tank sump solution?
« Last post by nigelb on May 27, 2025, 07:01:33 AM »Unfortunately Spock and Chissel didn't migrate across from the VOD. The information you require is locked in that forums archive that cant be accessed now. Shame.
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Vehicles / Re: Mercedes W202 saddle tank sump solution?
« Last post by DWRDeep on May 25, 2025, 08:31:56 PM »Thanks -sadly, many forums seem to be this way now, probably as people gravitate more & more to social media - I fear that a lot of information is to be lost in this way, I'm not sure ...
46
Vehicles / Re: Mercedes W202 saddle tank sump solution?
« Last post by dgs on May 25, 2025, 07:18:31 PM »Hi Phil and welcome, sorry to say its a bit quiet on here at the moment, hopefully someone who can advise you will see your post.
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Vehicles / Mercedes W202 saddle tank sump solution?
« Last post by DWRDeep on May 23, 2025, 09:49:02 PM »Hello all, I haven't found where to introduce myself here & I hope this is the right place to ask this question.
I have used waste veg oil in my cars for many years, filtered at various times via socks or water filters down to 1 micron.
Currently I'm running a lovely 98 Merc C250 TD Sport, & have been advised never to let it go below ½ tank full. It runs beautifully. I know from whispers that people known as Spock & Chissel(sp?) successfully connected the tank halves with a sump modification, but I haven't found details.
I'm thinking of drilling a hole near the base of the upright tube in each sender unit, inserting tubes to hold the drain valves open, and connecting with a T so that both run to the main fuel feed.
Comments please?
Cheers, Phil
I have used waste veg oil in my cars for many years, filtered at various times via socks or water filters down to 1 micron.
Currently I'm running a lovely 98 Merc C250 TD Sport, & have been advised never to let it go below ½ tank full. It runs beautifully. I know from whispers that people known as Spock & Chissel(sp?) successfully connected the tank halves with a sump modification, but I haven't found details.
I'm thinking of drilling a hole near the base of the upright tube in each sender unit, inserting tubes to hold the drain valves open, and connecting with a T so that both run to the main fuel feed.
Comments please?
Cheers, Phil
48
Chemistry and process / Re: Chemists! Is using 50% KOH & 50% NaOH in 2 Stage Process stage 1 OK?
« Last post by neisel on May 17, 2025, 09:52:37 AM »This may sound weird to you actual chemists but what I do is, using the no-tit calculator I tell it I have only 125L of WVO when I actually have 145ish. Methanol @ 16% gives me figures of 16L of meth & 625grms of Sodium or 875grms of Potassium (half those amounts if I' using half NA & half K.)
I suck it in, do the 4 bursts of mixing & fine tune it in S2 after I've seen the dropout.
I suck it in, do the 4 bursts of mixing & fine tune it in S2 after I've seen the dropout.
49
Chemistry and process / Re: Chemists! Is using 50% KOH & 50% NaOH in 2 Stage Process stage 1 OK?
« Last post by neisel on May 17, 2025, 08:19:09 AM »dgs,
Thanks for coming back to me.
Measured about 2 hours after I turned the machine off at the end of S1, dropout was 10%. S1 was four 8-10 minute bursts of mixing with a 20 minute 'rest' between each burst. My WVO is lightly used & v. clean - no water, no whites, no food. It is taken from the fryer after cooling overnight from operating temperature & is, I think, dry. When dropout after S2 is not zero it is only maybe 1 or 2%, too little to worry about IME.
I've been doing it like this for for several years now & typically use 20-21L of v. meth to make 145L of BD.
TBH I don't know what an FFA is.
Thanks for coming back to me.
Measured about 2 hours after I turned the machine off at the end of S1, dropout was 10%. S1 was four 8-10 minute bursts of mixing with a 20 minute 'rest' between each burst. My WVO is lightly used & v. clean - no water, no whites, no food. It is taken from the fryer after cooling overnight from operating temperature & is, I think, dry. When dropout after S2 is not zero it is only maybe 1 or 2%, too little to worry about IME.
I've been doing it like this for for several years now & typically use 20-21L of v. meth to make 145L of BD.
TBH I don't know what an FFA is.
50
Chemistry and process / Re: Chemists! Is using 50% KOH & 50% NaOH in 2 Stage Process stage 1 OK?
« Last post by dgs on May 16, 2025, 06:59:01 PM »Hi neisel, sorry, have been busy with various things.
Your total catalyst addition equated to KOH is 7.9gms/litre which is slightly less than base. in other words after your glyc wash there would appear to be no ffa's left in your oil which is unusual.
Average oil that titrates at say 5.0 titrates at about half that when glyc washed.
You only used 11% methanol for S1. Normally 14% is min to get reasonable conversion.
you didn't give us the dropout after S1. Did you leave at least overnight. Did you check dropout after S2.
Are you sure about all your values. I would be lucky to achieve those figures with new oil that I sometimes use.
Just more puzzled than anything .
Your total catalyst addition equated to KOH is 7.9gms/litre which is slightly less than base. in other words after your glyc wash there would appear to be no ffa's left in your oil which is unusual.
Average oil that titrates at say 5.0 titrates at about half that when glyc washed.
You only used 11% methanol for S1. Normally 14% is min to get reasonable conversion.
you didn't give us the dropout after S1. Did you leave at least overnight. Did you check dropout after S2.
Are you sure about all your values. I would be lucky to achieve those figures with new oil that I sometimes use.
Just more puzzled than anything .