# Renatoa Words of Wisdom

Here is a dedicated a page to information Renatoa has said. If you do not know who he is Renatoa is a person I considered to be the god father of the Skywalker. He was one of the first people to purchase one, break it down, predicted issues it would have and provided several of the first set of fixes. He is also the admin of the Home Roaster Forum and has been roasting for several years. I think he is a wealth of knowledge and a great asset to the home roasting community,  
  
Skywalker  
"It's simple: follow the heat."

<div dir="auto" id="bkmrk-it%27s-simple%3A-follow-">It's simple: follow the heat.</div><div dir="auto" id="bkmrk-as-in-criminal-foren">As in criminal forensic, follow the money.</div><div dir="auto" id="bkmrk-you-can-claim-you-kn">You can claim you know a machine when you can describe how the heat is produced, transferred and consumed.</div><div dir="auto" id="bkmrk-no-problem-being-a-p">No problem being a professional, there are a lot of high level drivers, even at top in F1, who don't know how they engine works, and worse, what to ask to the team to improve it. And they are driving whole live, millions of kilometres.</div><div dir="auto" id="bkmrk-i-know-it%27s-hard-for">I know it's hard for you to believe and/or accept, but Skywalker don't use hot air to roast beans... at all ! Conversely, the air steals heat from the beans.</div><div dir="auto" id="bkmrk-this-is-contrary-to-">This is contrary to all you know, and show how wrong is to judge an unknown thing on false premises.</div>  
  
On BT:

<div class="xdj266r x14z9mp xat24cr x1lziwak x1vvkbs" id="bkmrk-%22in-fact%2C-every-know"><div dir="auto">"In fact, every known method of measuring a moving mass of solid objects measures an average of the air temperature around the solids being measured.</div></div><div class="x14z9mp xat24cr x1lziwak x1vvkbs xtlvy1s" id="bkmrk-it-is-impossible-to-"><div dir="auto">It is impossible to accurately measure the surface of moving solid objects by point contact for such very short period of time, there is simply not enough heat transfer.</div></div><div class="x14z9mp xat24cr x1lziwak x1vvkbs xtlvy1s" id="bkmrk-for-this-reason%2C-you"><div dir="auto">For this reason, you will experience a relatively lower temperature for the final part of the roasting in the Skywalker compared to convection roasters, because in the Skywalker the air is cooler than the coffee beans, unlike convection, where the air is hotter than the coffee beans.</div></div><div class="x14z9mp xat24cr x1lziwak x1vvkbs xtlvy1s" id="bkmrk-this-behavior-is-due"><div dir="auto">This behavior is due to the radiant nature of the heating in the Skywalker. IR radiation does not heat transparent media it passes through, such as gases or glass!</div><div dir="auto">It is like the heat we get from the sun... the air gets its heat from ground radiation, not from the sun's rays. The further away from the Earth's surface it is, the colder it gets..."  
  
On Probes:  
  
<div dir="auto">"That's because the probe measure an average temperature of the air-beans mix.</div><div dir="auto">The air in this machine is cooler than the beans, unlike the most common commercial roasters, where is viceversa, air hotter than beans.</div><div dir="auto">For this reason for lower loads the probe measures a mix consisting of more air than beans, thus lower figures on display."</div>  
  
On Airflow:  
  
<div dir="auto">"Any change in this machine airflow will change dramatically the roast dynamics, don't do this !</div><div dir="auto">I can detect in my machine behavior even the switching between the three oven hood speeds, that lies about half meter above the roaster."  
  
On Skywalker Lamps:  
  
" <div class="xdj266r x14z9mp xat24cr x1lziwak x1vvkbs x126k92a"><div dir="auto">A well abused Skywalker... life expectancy.</div></div><div class="x14z9mp xat24cr x1lziwak x1vvkbs xtlvy1s x126k92a"><div dir="auto">This is the SKW of a fellow. Heater filament broke yesterday.</div><div dir="auto">9 months, 15 kg per month, thus about 135 kgs.</div><div dir="auto">Those who started using this machine for small production... should get a spare lamp asap.:"  
  
  
</div></div></div></div></div>