Recent Posts

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The Design Shop / Re: Advice on building s simple ‘clutch’ to stop a driven accessory
« Last post by awemawson on September 29, 2025, 03:29:24 AM »
A tensioning pulley in the drive train mounted on an “over centre” crank that can either tighten or slacken the belt much like a flat belt overhead drive shaft would be in an Edwardian workshop.
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The Design Shop / Advice on building s simple ‘clutch’ to stop a driven accessory
« Last post by Jim Dobson on September 28, 2025, 11:11:35 PM »
I’m after some advice to build a simple ‘clutch’ that can be activated by a lever to disengage a running accessory that is being run by a belt off an engine.

If in the photo below where I have drawn the red line (and that belt was longer) what type of simple ‘clutch’ could be built to be able to work to disengage the belt with a lever moved one way and then re-engage the belt with the lever moved back? This would be an extremely handy thing for me to have when running accessories of steam engines and H&M engines etc

I’ve wracked my brain and everything I have come up with would be a dud……any ideas?
Hope I’ve made some sort of sense with the above!

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Member Videos / B01 Gas Hit & Miss Driving an Old Water Pump via a DIY Homemade Transmission
« Last post by Jim Dobson on September 28, 2025, 09:59:33 PM »
B01 Ball Top Monitor Gas Hit & Miss Engine Driving an Old Antique Pericaud Water Pump via a DIY Homemade Transmission that I made some years ago. The Transmission slowed the pump down nicely and was well matched to the H&M engine and this is one of the jobs these types of engines would have done back in the day.

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Member Videos / Re: My week this week, my workshop videos!
« Last post by hermetic on September 27, 2025, 11:02:19 AM »
Hi Folks

I get the Qualters and Smith saw running, and adjust the hydraulics, and almost get it right, but I have decided to strip the lift ram next week to check the settings as it sometimes doesnt cut quite through before it goes into lift mode! We finish the wire mesh around the trees to make the fence dog proof in both directions, and clear Damson wood! Friday I get my Honda mower running after some tinkering and clear my garden ready for fencing and finishing off at Ratten row! It's only the work that is keeping us alive, as I always say to Keith! Long may it continue!

Phil, in warm and Bootiful East Yorkshire!

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Member Videos / Re: First Run of my B01 Ball Top Monitor Hit & Miss Engine
« Last post by Jim Dobson on September 26, 2025, 05:21:03 PM »
Quote from: tom osselton on September 26, 2025, 04:51:28 PM
Nice but what the H*ll is Moose milk?

What all the black powder shooters use to stop the burnt black powder from rusting their pistols and rifles.
Its just Ballistol (which is water soluble) mixed with water. Works great for H&M engines so that when you've emptied the hoppers and the water evaporates its protected by the Ballistol.

Who coined 'Moose Milk' ..... I don't have any idea.
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The Water Cooler / Re: ArcEurotrade
« Last post by kayzed1 on September 26, 2025, 05:02:51 PM »
I had been on the mailing list for years, but i had no idea of this. :beer:
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Member Videos / Re: First Run of my B01 Ball Top Monitor Hit & Miss Engine
« Last post by tom osselton on September 26, 2025, 04:51:28 PM »
Nice but what the H*ll is Moose milk?
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The Water Cooler / Re: ArcEurotrade
« Last post by djc on September 26, 2025, 12:01:02 PM »
Quote from: kayzed1 on September 23, 2025, 05:01:38 PM
But one would have thought they inform people who had bought on a regular basis would you not?

If you buy from them on a regular basis, as part of your ordering process, you will have been offered the opportunity to have your details added to their mailing list.

If you have declined this offer, the only way they can contact you is by unsolicited commercial email (more commonly known as spam). Arc do not engage in this underhand practice. You cannot criticise them for respecting the privacy you yourself have requested.
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PowerSports / Ebike trike conversion
« Last post by BillTodd on September 26, 2025, 07:29:20 AM »
Probably just another fantasy cad project, but inspired by YouTube  videos here's my idea for converting my Kalkhoff  (https://www.madmodder.net/index.php/topic,13896.msg165815.html#msg165815 ) ebike to a tadpole leaning  trike.

The idea is to attach the trike chassis to the top motor mount and forks .  I may have to add bracing to the fork or bracing up to the head-stock  to take the extra leverage of the cargo section.

It has to lean for stability as I can only make it about 650mm wide .


The hope is it'll do the green waste disposal job I currently use my vastly more expensive R&M for ...
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The Design Shop / Re: Surface grinder concept/project
« Last post by BillTodd on September 26, 2025, 06:59:09 AM »
Another rethink about the base design.

Instead of having to cut a 10" wide slab on aluminum down to 5" . I think I'll keep it 10" deep and fill in the the front and side with thinner plates and use another 1" thick piece at the back

If I cover the front left side with the extruded T-slot I have, it might be useful for mounting a rotary table for cylindrical grinding
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