Search: Posts Made By: Richardfast
Showing results 1 to 25 of 166
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Replies: 4
Views: 2,383
Posted By Richardfast

RE: Brushed motor underwater?

It is for a submersible camera setup. I am going to run two motors such that I have total control over turning and forward/reverse, just like in a boat, but this will be submerged. Trying to come up...
Replies: 3
Views: 617
Posted By Richardfast

RE: Direct xmtr/rcvr connection

Bingo, thats's right! Why didn't I think of that?
Thanks,
Richard
Replies: 4
Views: 2,383
Posted By Richardfast

Brushed motor underwater?

I have run a brushless motor underwater an it runs fine, at least in fresh water. Do you think a brushed motor will also work underwater? The reason for going brushed is that I already have a brushed...
Replies: 3
Views: 617
Posted By Richardfast

Direct xmtr/rcvr connection

I am building an RC submersible that I want to control through a cable from the surface. Can someone tell me an easy way to connect the transmitter output in my boat on the surface to the receiver in...
12-13-2006, 08:17 AM
Replies: 5
Views: 7,977
Posted By Richardfast

RE: LiPo Fully Charged Voltage

Thanks all of you for the replies. I think I can conclude that since my MkII was originally for LiIon cells it is not charging my LiPoly's to full capacity (4.2 volts).

For info, I replaced the...
12-12-2006, 02:53 PM
Replies: 5
Views: 7,977
Posted By Richardfast

LiPo Fully Charged Voltage

I am charging my Thunder Power 2S 1310 LiPo pack using my Hobbico Quick Field Charger Mk II. The voltage is only 7.9 volts when the Mk II quits charging. According to the info that came with my...
04-25-2006, 11:29 AM
Replies: 2
Views: 711
Posted By Richardfast

RE: ST2300 fuel inlet too small!

Bill,
Thanks for the reply. I hear and understand what you are saying, however I know that my fuel tank setup is correct and in spec with the ST Manual. I just couldn't go rich enough without...
04-22-2006, 10:07 PM
Replies: 2
Views: 711
Posted By Richardfast

ST2300 fuel inlet too small!

Bill,
My new ST2300 was not getting enough fuel at wide open throttle. My RPM's were lower than expected and the needle was having no effect no mnatter how far it was open. I could not get an...
Forum: Kit Building
08-16-2005, 03:17 PM
Replies: 7
Views: 861
Posted By Richardfast

RE: Four Star 120 questions

berta,
Thanks for the nice reply. I have become fond of gas engines, especially the small ones. Putting it on a 4*60 was more a conversation piece than anything. Frankly, I am surprised it still...
Forum: Kit Building
08-16-2005, 06:32 AM
Replies: 7
Views: 861
Posted By Richardfast

RE: Four Star 120 questions

Berta,
The reason I suggested a larger gas engine than the G23 for the 4*120, is that I have flown my friends 4*120 and it will not do a vertical roll and still have any flying (like with a wing)...
Forum: Kit Building
08-15-2005, 07:47 PM
Replies: 7
Views: 861
Posted By Richardfast

RE: Four Star 120 questions

See my recent post concerning putting a G26 in the 4*60. That is a great combination, putting one in a 4*120 would not be. A 35 to 42 CC gas would be great. My friend is flying a 4*120 with the GMS...
Forum: Kit Building
08-15-2005, 06:49 AM
Replies: 4
Views: 775
Posted By Richardfast

RE: Zenoah G-26 works nice in 4*60

Sorry for not responding sooner, guys. I will get some pictures out soon. I bashed the plane a little, giving it the look of an Army trainer (PT-19), including color. The landing gear was moved to...
Forum: Kit Building
08-05-2005, 08:54 PM
Replies: 4
Views: 775
Posted By Richardfast

Zenoah G-26 works nice in 4*60

I just completed a 4*60 kit using a Zenoah G-26. I put the elevator and rudder servos in the rear and moved the firewall back 3/4" to keep the prop at the stock location. Weight came out 9 pounds and...
Forum: Aerodynamics
07-01-2005, 05:43 AM
Replies: 5
Views: 793
Posted By Richardfast

RE: Stability/inverted stall issues with CG Sukhoi ARF

Gremlin Castle,
The engine is a G-26, the weight is about 12 pounds, elevator expo is 30%. I didn't heed your advice and went ahead and moved the CG to 3/4" ahead of the recommended, and the expo...
Forum: Aerodynamics
06-29-2005, 06:34 PM
Replies: 5
Views: 793
Posted By Richardfast

RE: Stability/inverted stall issues with CG Sukhoi ARF

Should I just keep moving the CG forward to lessen this condition. Already I am having to "push" more than I like when inverted. However, when I pull straight up there is no indication the CG is off...
Forum: Aerodynamics
06-29-2005, 11:40 AM
Replies: 5
Views: 793
Posted By Richardfast

Stability/inverted stall issues with CG Sukhoi ARF

Even with the CG forward of recommended, my Carl Goldberg Sukhoi ARF stalls when going over the top inverted (Split 'S', reverse Cuban, etc.) and I am unable to get elevator or aileron response. It...
Forum: Gas Engines
06-27-2005, 07:17 AM
Replies: 1
Views: 338
Posted By Richardfast

Butterfly position on G-26 must be correct!

The used G-26 I purchased wouldn't run except almost wide open. As the throttle would close it leaned out and died. I searched on RCU and found a thread that said the butterfly rotation must be in...
Forum: Gas Engines
06-24-2005, 03:47 PM
Replies: 11
Views: 1,305
Posted By Richardfast

RE: need tuning help!!!

You should be able to run an 18-8 on a 31 cc engine. The Zenoah G-26 uses a 16-8 to 18-8 per the manual.
05-11-2005, 07:39 PM
Replies: 41
Views: 2,927
Posted By Richardfast

RE: Model diesels are a little different.

Motorboy,
You are making things more clear for me now. I didn't fully understand before that the ether was the only "spark" even after the motor is fully warmed up. I thought as the engine warmed...
05-11-2005, 05:21 PM
Replies: 9
Views: 2,920
Posted By Richardfast

RE: Replacement for Ether?

Motorboy,
Thank you for the information.
I have found another compound which may have promise. Ethylene glycol dimethyl ethers made by Glymes. Web site is www.glymes.com. SIT is in the 190 to...
05-11-2005, 02:58 PM
Replies: 9
Views: 2,920
Posted By Richardfast

RE: Replacement for Ether?

Motorboy,
What is the autoignition temp for Coleman Fuel/white gas? The Coleman MSDS does not state this. I suspect it is like petroleum ether/naphtha/VM&P, but not sure.
05-11-2005, 02:15 PM
Replies: 41
Views: 2,927
Posted By Richardfast

RE: Model diesels are a little different.

Ed,
I will be testing Coleman fuel in my .40 diesel in about a week (when the DDD head arrives).
Note these autoignition temps:
Petroleum ether/naphtha 288C
Gasoline ...
05-11-2005, 06:41 AM
Replies: 9
Views: 2,920
Posted By Richardfast

RE: Replacement for Ether?

Note below a comparison of the physical properties of diethyl ether (currently used in most model diesel fuel formulas) and petroleum ether (also known as VM&P naphtha and available at paint stores....
05-10-2005, 10:37 PM
Replies: 9
Views: 2,920
Posted By Richardfast

Replacement for Ether?

Has anyone tested any of the following as a replacement for ether:
1. Coleman stove/lamp fuel
2. Naphtha solvents
3. Mineral spirits
4. Lighter fluid
5. Charcoal starter

Just need to...
05-10-2005, 07:42 PM
Replies: 41
Views: 2,927
Posted By Richardfast

RE: Model diesels are a little different.

To all, thanks for the inputs. I am going to do emperical testing, but I had hoped to get some leads from this forum before starting. Why waste time on something that someone else has found not to...
Showing results 1 to 25 of 166
 


 
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