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Search: Posts Made By: DoctorG
Showing results 1 to 25 of 27
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Forum: Gas Engines
04-27-2018, 05:56 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

https://cimg9.ibsrv.net/gimg/www.rcuniverse.com-vb...

https://cimg9.ibsrv.net/gimg/www.rcuniverse.com-vbulletin/1000x562/simple_silencer_2_603af9380fe82b7006774f2a2c6b04169bfebe80.jpg

Simple box section steel exhaust to fit in the Stampe cowl. Silver...
Forum: Gas Engines
02-14-2016, 09:37 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

At the risk of hijacking this thread to talk...

At the risk of hijacking this thread to talk about dogs I don't think mine would appreciate being called old - he was only 15 months when the picture was taken ;). I will say no more about dogs I...
Forum: Gas Engines
02-13-2016, 04:24 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

Ugly Stik Test Bed

Actually got some airtime in with the NGH38 fitted to my scratch built 80inch Ugly Stik. Since I bought this engine back in April last year it has managed a couple of minutes in my aborted Stampe,...
Forum: Gas Engines
01-06-2016, 05:51 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

Interesting to see how that works. I've never had...

Interesting to see how that works. I've never had much success with soft mounts on gas engines.
Forum: Gas Engines
11-11-2015, 08:36 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

That seems about right for an 18x10. Haven't run...

That seems about right for an 18x10. Haven't run mine on that prop I use a MA Classic 18x8 and that gives me 6600. Plenty of power to haul my 80inch Ugly Stik round. A club member runs his on a 17x8...
Forum: Gas Engines
10-26-2015, 04:40 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

Good luck with that. I have just flown mine in a...

Good luck with that. I have just flown mine in a scratch built 90" (228 cm) wingspan Ugly-Stik. It goes well. However a club mate has the HK version which is much lighter and less robust than my slab...
Forum: Gas Engines
09-10-2015, 12:44 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

I agree with Rob C, the engines I have seen are...

I agree with Rob C, the engines I have seen are well made and run reasonably well - when you get the timing sorted out. I am puzzled why they set the timing at 40DBTC and supply a 30DBTC module other...
Forum: Gas Engines
09-05-2015, 09:35 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

Interesting. When, where, how much? Any specs yet?

Interesting. When, where, how much? Any specs yet?
Forum: Gas Engines
09-05-2015, 09:33 AM
Replies: 85
Views: 46,140
Posted By DoctorG

When, were, how much??

When, were, how much??
Forum: Gas Engines
08-30-2015, 10:37 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

I'll take one as well when they are available

I'll take one as well when they are available
Forum: Gas Engines
08-26-2015, 02:47 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

Hi Adrian 40 BTDC comes up as private so won't...

Hi Adrian
40 BTDC comes up as private so won't run.

Would you consider selling a 40BTDC module?
Forum: Gas Engines
08-24-2015, 12:22 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

Hi Adrian Good to see that you are hooked...

Hi Adrian

Good to see that you are hooked into this thread and that you are looking at an example of this engine. Thanks for answering my question about the module and the advance - unfortunately...
Forum: Gas Engines
08-23-2015, 09:26 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

Spent some time tinkering with another NGH 38FG...

Spent some time tinkering with another NGH 38FG bought by a friend. Similar to mine, ignition timing at cira 45deg TDC and lots of vibration until reset to 35deg. I wonder if the ignition module that...
Forum: Gas Engines
08-15-2015, 08:31 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

Hi Robc. I am intriqued by the number of tubes...

Hi Robc.
I am intriqued by the number of tubes you have screwed to the bulkhead. Filler tube plugged maybe and then two others open.?? Just out of pure curiosity how have configured the plumbing....
Forum: Gas Engines
08-02-2015, 06:59 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

I use a 2000mAHr 2S LiPO. During my trouble...

I use a 2000mAHr 2S LiPO. During my trouble shooting phase (see earlier) I ran the ignition module on a bench power supply. The module was fine with the voltage between 4.8 - 8.4 Volts. At 7.6V...
Forum: Gas Engines
07-27-2015, 11:24 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

Captin ... I understand the concern but given...

Captin ... I understand the concern but given that the mass and rigidity of the unit is all in the box section bolted to the side of the engine which will vibrate relative to the firewall it don't...
Forum: Gas Engines
07-27-2015, 12:37 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

Still working on a build from scratch Stampe for...

Still working on a build from scratch Stampe for the NGH. Made a simple box silencer from steel 30x15mm tube as shown. Fits nicely inside the fg cowl. (Yes I know the Stampe exhausts exit on the...
Forum: Gas Engines
06-22-2015, 11:17 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

What oil ratio have you been using?

What oil ratio have you been using?
Forum: Gas Engines
05-02-2015, 02:43 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

OK video should be viewable here...

OK video should be viewable here https://www.youtube.com/watch?v=vyODVsPMkjE which shows the engine as I received it and also my slightly 'different' way of determining TDC using a drop clock.
Forum: Gas Engines
05-01-2015, 11:05 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

No simple method. You need a timing disc attached...

No simple method. You need a timing disc attached to the prop driver and then find top-dead-centre TDC and set disc to zero. Then connect the ignition system and find out where it sparks. You can get...
Forum: Gas Engines
04-26-2015, 11:25 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

How do you get on with hand starting? I find it...

How do you get on with hand starting? I find it is fine once the fuel lines are full and the carb primed but I can't get to that condition with out first using an electric starter.
Forum: Gas Engines
04-26-2015, 09:14 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

I agree. Different engine different prop. Can't...

I agree. Different engine different prop. Can't see the relevance to this thread. I have an ASP 120 converted to gas - also has a lower tick over.
Forum: Gas Engines
04-26-2015, 08:11 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

Thanks for that. Saves me chasing the impossible.

Thanks for that. Saves me chasing the impossible.
Forum: Gas Engines
04-26-2015, 06:47 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

Just thought I'd post an update on my FG38....

Just thought I'd post an update on my FG38. Having taken everything out of the model I ran the engine on the test stand with the test stand components, tank, battery etc. It ran OK - not brilliant...
Forum: Gas Engines
04-17-2015, 07:38 AM
Replies: 1,678
Views: 461,311
Posted By DoctorG

Well here's interesting.....have stripped the...

Well here's interesting.....have stripped the engine out of the model and mounted back into the test stand. Following Tyor's post I went back to the 4 cell nicd battery I used first time (plus I...
Showing results 1 to 25 of 27
 
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