Dynamax vs Ramtec - RCCanada - Canada Radio Controlled Hobby Forum
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Old 08-14-2006, 04:17 PM   #1
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I am: Dave J
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Dynamax vs Ramtec

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Buying a partial completed Yellow Aircraft A-4 from a friend and I have both a Dynamax and Ranmtec fan to use. Any suggestions which is better to use? Either would be powered with an OS.91.

Also where can you buy a starter probe for them and are the probes the same or would I need different probes for each?

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Old 08-14-2006, 07:14 PM   #2
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Hi Dave,

The Ramtec has a little more thrust due to a more efficient fan design.
Lots of guys run a Ramtec fan inside a dynamax shroud.

The starter probe is a standard hex adapter design. You may be able to use a heli wand depending on your airframe.

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Old 08-15-2006, 09:21 PM   #3
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DF Fans

I've never owned a Ramtec, but I'm sure most DF flyers will say the Ramtec is better, just ever so slightly more efficient & I believe a bit smaller (advantageous in your plane). If I had the choice I would get a Ramtec. Maybe hardly a noticeable difference, but a newer design.

As far as a starter probe, they are pretty easy to make if you have acess to a lathe. I used a long nosed ball driver at one end secured by several set screws & an airplane spinner at the other. In between (near the spinner) cut the shaft down & install a piece of brass tubing to hold onto. I used 1/2" cold rolled steel for the round shaft cut to the length needed. I got a 6" long brass 1/4" npt pipe nipple (cut the threaded ends off) & used this for holding onto. I did drill out the id to about 3/8" & turned the end of the 1/2" shaft down to this size

no such thing as too fast!
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