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Search: Posts Made By: apereira
Showing results 1 to 25 of 28
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Forum: RC Pattern Flying
03-30-2014, 06:40 PM
Replies: 249
Views: 57,455
Posted By apereira

Very nice little beast is that engine, amazing...

Very nice little beast is that engine, amazing how they can make a DZ so small, enjoy it!!
Forum: RC Pattern Flying
03-30-2014, 06:17 PM
Replies: 249
Views: 57,455
Posted By apereira

One thing I forgot, There was a version of the...

One thing I forgot, There was a version of the pump on the 170 which has or had a copper (I think is copper) piston liner on the pump, I think this is the pump which used to overheat, since that pump...
Forum: RC Pattern Flying
03-29-2014, 03:16 PM
Replies: 249
Views: 57,455
Posted By apereira

On our field the temperature is about 95F, and...

On our field the temperature is about 95F, and never had any issues, but the 175 and 185 runs hotter than the 170, I always run my engines on the rich side and never had that problem, even in Muncie,...
Forum: RC Pattern Flying
03-29-2014, 01:18 PM
Replies: 249
Views: 57,455
Posted By apereira

Yes, the cooling issues have been gone for a...

Yes, the cooling issues have been gone for a while, unless the engine does not have any air coming to the pump fins. Longevity on the 175 is better than previous, but not enough time on the 185 to...
Forum: RC Pattern Flying
03-06-2012, 04:57 AM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Hello Robert,

That is normal only if you fly on weekends only, on consecutive days it should not happens, but your priming method might be the problem.

With the ignition off obviously,...
Forum: RC Pattern Flying
02-25-2012, 11:11 AM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Never had spark plug fouling issue neither.

Regards
Forum: RC Pattern Flying
02-17-2012, 04:04 PM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Sure! I was happy when I found them.

Regards
Forum: RC Pattern Flying
02-17-2012, 03:47 PM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Dave,

The Prather line of products is still in production by another company, I think they specialize in boats, I google them last time and bougth two rolls just in case, There are several hobby...
Forum: RC Pattern Flying
02-17-2012, 03:55 AM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Double
Forum: RC Pattern Flying
02-17-2012, 03:51 AM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

There are some engines with the two diaphragms, one or both is ok, if your engine ran fine, and now it is not, it is better to check the root of the problem, re adjusting the pump will only mask the...
Forum: RC Pattern Flying
02-16-2012, 12:04 AM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Also, flip the prop back and forth when you hear the "click" and make sure fuel with no air comes out of the injector hose(disconnected), let it drip a bit.

Regards
Forum: RC Pattern Flying
10-18-2011, 07:26 PM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

I replace the plug every 80 flight just in case, but is not due to failure.

Regards

Alejandro P.
Forum: RC Pattern Flying
10-18-2011, 07:40 AM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

In my case, I run two 170 converted to CDI one low oil the other normal and the 170CDI version form Japan wich is low oil too, all run with 23% oil with no problems, at the WC we all got 23% oil fuel...
Forum: RC Pattern Flying
10-17-2011, 11:37 AM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

For sure try a new plug, and on the pump, there is only one diaphragm either the black or the orange. The orange did not do so well so they did not used it anymore, stay with the black one or the one...
Forum: RC Pattern Flying
03-20-2011, 05:43 AM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Hello Brett,

Sorry, I did not how many errors I made when typiying on the previous post.

We had in our team an engine with a bad hall sensor, and that, can be an intermittent problem...
Forum: RC Pattern Flying
03-19-2011, 07:53 AM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Hello Brett,

You can run the CDI on an F glow plug, it's the same as the YS4 and it is the correct plug. You can run 15% or lower oil content with no problems, but the engine will last longer...
Forum: RC Pattern Flying
09-29-2010, 08:23 PM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Jim,

I'm sure you know I agree with you, electric will not make you a better pilot. I remember at the worlds I told Quique at the banquet, I was sure he would score higher if would still use...
Forum: RC Pattern Flying
08-28-2010, 03:25 PM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Hello Claude,

Did he used that prop on the 170CDI or 175CDI?

Regards
Forum: RC Pattern Flying
08-26-2010, 07:11 PM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Hello Brett,

Yes, I do understand the principle and that's why I mentioned the pressure differential , all I'm saying is I really doubt it can be cavitation, not denying the pump damage, which...
Forum: RC Pattern Flying
08-26-2010, 10:16 AM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Hi Keith,

Easier method of checking pump pressure, as well as the actuating is to to use a T fitting with a gage. It's the practical way, theoretical values might be off as there is no...
Forum: RC Pattern Flying
08-26-2010, 09:25 AM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

That's great Amram, glad you got it!

If there is something for sure is nobody beats Yamada or Richard in customer support!!

Keith, the pump output pressure is 6psi normally but it can...
Forum: RC Pattern Flying
08-24-2010, 10:25 AM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Very good information about cavitation, and in my favor and taken form the text,


Cavitation is the formation of small bubbles in a liquid due to low pressures. The bubbles are dissolved...
Forum: RC Pattern Flying
08-23-2010, 12:00 PM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Very good news for sure, even though I do not suffer from the problem, any upgrade or improvement will always be welcome, it's like software, we usually can't stop installing upgrades.

I think...
Forum: RC Pattern Flying
08-21-2010, 10:17 PM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Good to hear all engines are working out, in the mean time, I found the instructions on Richard's page to be be different to those that came with my CDI engine, it looks to be a revision, in the...
Forum: RC Pattern Flying
08-18-2010, 08:16 PM
Replies: 249
Views: 57,455
Posted By apereira

RE: YS 170 DZ CDI

Hello Dick,

It looks like everything is on it's way to get resolved, and I'm glad to hear that. I think the 19.5 loads the motor up, and this motors if we know something is that they are...
Showing results 1 to 25 of 28
 
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