# Testbed Gasifiers for Experimentation? **URL:** http://forum.driveonwood.com/t/testbed-gasifiers-for-experimentation/8284 **Category:** General Discussion **Created:** [September 5, 2025, 1:55am UTC](http://forum.driveonwood.com/t/testbed-gasifiers-for-experimentation/8284 "2025-09-05T01:55:06Z") **Posts on this page:** 1 **Showing post:** 6
### Author: ![r\_wesseling](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/r_wesseling/32/30940_2.png) [@r\_wesseling](http://forum.driveonwood.com/u/r_wesseling) #### Post date: [September 5, 2025, 10:48pm UTC](http://forum.driveonwood.com/t/testbed-gasifiers-for-experimentation/8284/6 "2025-09-05T22:48:24Z")
> [@Striperoo](#): > > gumming up a small predator engine’s valves multiple times in the process. Hi Striperoo, For small engines, 20hp and below, charcoal is usually best. I think Tone Šuštarič’s ‘Fergi’ tractor project in [Tractor with gas?](https://forum.driveonwood.com/t/tractor-with-gas/6182) is the most interesting. If you are going to make charcoal there seem to be three basic methods: flame cap, TLUD, and closed vessel. @Chuckw has a tipped barrel basically a flame cap. I use a tank from an old 50gal water heater as a TLUD (Top Lit Up Draft). And @KristijanL uses a closed vessel to make charcoal for restaurants. The fines he can’t sell he uses to power his Skoda pickup (similar to rabbit pickup). I haven’t gotten to the point, yet, where I will use a bunch of sensors. But Design of Experiments was very interesting to me too and I plan to start doing that kind of thing soon. Fuel prep is time consuming so depending on how much you do this you will probably want a chunker. There are two basic types that I’m aware of one is the rotating guillotine that @Wayne uses, the other is the [screw type](https://forum.driveonwood.com/t/screw-wood-chunker/6885). Best of luck and welcome to us. Rindert --- _[View the full topic](http://forum.driveonwood.com/t/testbed-gasifiers-for-experimentation/8284)._