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Search: Posts Made By: Union Models
Showing results 1 to 25 of 129
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Forum: YS Engines Support
11-28-2018, 10:45 AM
Replies: 7
Views: 1,698
Posted By Union Models

Probuild don't have any more of the 720 pipes, I...

Probuild don't have any more of the 720 pipes, I phoned them. There will be no more Hatori pipes, I hear they are not making them anymore.

I bought my 720 pipe and header second hand from a UK...
Forum: YS Engines Support
10-31-2018, 05:07 AM
Replies: 7
Views: 1,698
Posted By Union Models

Four Stroker, thanks for your reply. This backs...

Four Stroker, thanks for your reply. This backs up what another flyers thoughts were, that the YS70FZ is on the limits for the Hatori 530 pipe.

I've since replaced the pipe with a Hatori 720 short...
Forum: YS Engines Support
10-09-2018, 11:02 PM
Replies: 3
Views: 1,694
Posted By Union Models

Great, glad you have the engine sorted. Mike

Great, glad you have the engine sorted.
Mike
Forum: YS Engines Support
10-08-2018, 11:58 PM
Replies: 7
Views: 1,698
Posted By Union Models

Problem sorted.. As this was a new YS70FZ I was...

Problem sorted.. As this was a new YS70FZ I was using, the Hatori pipe and header had been used for quite along time in another model.
The problem was due to coking up in the pipe, causing some...
Forum: YS Engines Support
10-08-2018, 11:53 PM
Replies: 3
Views: 1,694
Posted By Union Models

I had a similar problem with my YS170 with a CDI...

I had a similar problem with my YS170 with a CDI conversation. It would miss fire on take off.
I traced the problem to a faulty CDI unit.

To find my fault, I disconnected the CDI unit spark plug...
Forum: YS Engines Support
08-18-2018, 02:53 AM
Replies: 7
Views: 1,698
Posted By Union Models

Black oil from Hatori tuned muffler

Hi, wondering if someone might be able to help.
I've been running a new YS70FZ in a pattern model.
The YS70FZ is using a Hatori 577 flexible header with a Hatori 530 tuned muffler (looks more like...
Forum: YS Engines Support
07-17-2018, 12:55 PM
Replies: 2
Views: 1,100
Posted By Union Models

Sounds like the low end needle is lean. Try...

Sounds like the low end needle is lean. Try richening the low needle (turning it clockwise) 1/8th turn and see if it helps. High speed needle will need to be adjusted, as they have an impact on each...
Forum: YS Engines Support
07-17-2018, 08:21 AM
Replies: 4
Views: 1,312
Posted By Union Models

From my experience, although these YS Engines are...

From my experience, although these YS Engines are made to a fine tolerance, each engine will have different settings. I've two YS63FZ, and both have different regulator, low and high needle settings....
Forum: YS Engines Support
10-31-2017, 08:32 AM
Replies: 4
Views: 1,481
Posted By Union Models

Thanks for your reply. That sounds more like a...

Thanks for your reply. That sounds more like a kinder running in process that I'd be happy to use.
Running full throttle for 3-4 minutes feels a bit harsh for a new motor.
Forum: YS Engines Support
10-30-2017, 04:29 PM
Replies: 4
Views: 1,481
Posted By Union Models

Running in a new YS

Out of curiosity, what's people's preference to running in a new YS.
I've bought a new YS70FZ. I've read some recomend run at tick over for a minute, then a slightly rich full throttle run for 3-4...
Forum: YS Engines Support
07-12-2017, 07:58 AM
Replies: 4
Views: 1,480
Posted By Union Models

Thanks for your reply, I took the valves off...

Thanks for your reply, I took the valves off today and the exhaust did have quite a bit of carbon as expected. I cleaned off the carbon with wire wool and cleaned well. Later I'll give the valves a...
Forum: YS Engines Support
07-11-2017, 10:31 PM
Replies: 4
Views: 1,480
Posted By Union Models

Thanks Ken for your reply. I will clean up the...

Thanks Ken for your reply. I will clean up the valves and give them a lap and run in as you say.

Thanks, Mike.
Forum: YS Engines Support
07-11-2017, 08:44 AM
Replies: 4
Views: 1,480
Posted By Union Models

YS63FZ-S Valve Seats

Wondering if you guys may be able to help. I treated my trusty YS63FZ-S to a new set of bearings and new piston ring, as it was down on power.

Ive noticed the inlet and exhaust valve seats leak, a...
Forum: YS Engines Support
03-13-2016, 11:39 AM
Replies: 4
Views: 1,786
Posted By Union Models

Hi Speedracer, Thanks for your reply. Someone...

Hi Speedracer,
Thanks for your reply. Someone else at my flying field suggest I went setting a low throttle trim setting for flight and landing.
I think I will go this route than upset the engine...
Forum: YS Engines Support
03-10-2016, 12:56 PM
Replies: 4
Views: 1,786
Posted By Union Models

YS63FZ-S quits in a maneuver

Hi all,
I've a YS63FZ-S engine which starts easily, smooth transition, lots of top end power and holds a tickover around 2300rpm.
My problem is the engine quits when I perform a 3 turn spin. If I...
Forum: YS Engines Support
03-10-2016, 12:36 PM
Replies: 3
Views: 2,333
Posted By Union Models

I've used model technics After run oil in my YS...

I've used model technics After run oil in my YS engines and it's never caused any ill effects. One of my YS was laid up for 2 year's and it ran perfectly after all that time.
Mike.
Forum: YS Engines Support
04-24-2013, 11:45 AM
Replies: 7
Views: 1,887
Posted By Union Models

RE: When to replace YS bearings

Thanks Arnstein, I understand theres no comparison, all settings are different to everyone elses engines. Indeed flying is the only way to tell.

Regards,

Mike.
Forum: YS Engines Support
04-23-2013, 11:40 PM
Replies: 7
Views: 1,887
Posted By Union Models

RE: When to replace YS bearings

Hi Arnstein,

Storage, oil thickning would make sense. I had another look at the 170. There seems less play while it was cool. It doesn't feel gritty, turns over smoothly.

I ran it up a few...
Forum: YS Engines Support
04-21-2013, 11:57 PM
Replies: 7
Views: 1,887
Posted By Union Models

RE: When to replace YS bearings

Thanks Apereira, you put my mind at rest. 300 flights would sound more like it.

Best Regards,

Mike.
Forum: YS Engines Support
04-21-2013, 12:55 PM
Replies: 7
Views: 1,887
Posted By Union Models

When to replace YS bearings

Hi Guys,

I was out flying my YS170 (converted CDI) with no problems. When I came to run the engine dry, as it may be more than a week before I get to fly again, I noticed there was a bit of play...
Forum: YS Engines Support
12-06-2012, 03:05 PM
Replies: 1
Views: 1,197
Posted By Union Models

RE: ys170dz Fuel tank

I have the same setup with my YS170. Two fuel dots, one in the overflow line & one in the feed line. At the end of the overflow fit your oneway valve. It should be installed so it lets air into the...
Forum: ARF or RTF
04-19-2012, 01:44 AM
Replies: 415
Views: 144,664
Posted By Union Models

RE: E Z Arf Models

EZ Bud Light Lazer 200. Big model 3.5 scale 40/50cc. Model comes in two boxes.

EZ Super Box Fly 20

EZ 45 Super Chipmunk

EZ 45 Dago Red P51

Global EZ 182
Forum: ARF or RTF
02-14-2012, 01:26 PM
Replies: 415
Views: 144,664
Posted By Union Models

RE: E Z Arf Models

Hey Paul,

Hope all's well

Sounds great, looks a pretty model.

I'm amazed as to how many of the EZ models were available.

Mike
Forum: ARF or RTF
01-29-2012, 11:03 AM
Replies: 415
Views: 144,664
Posted By Union Models

RE: E Z Arf Models

EZ Mystic 90

Powered with YS 63S

Hanno Supra retracts

6 1/2 ibs

Flys very smooth.
Forum: YS Engines Support
12-01-2011, 03:24 AM
Replies: 33
Views: 3,287
Posted By Union Models

RE: YS 110s problem

Hi Bob,

I've just been reading through your posts on RC Universe.

I checked my old crancase. The brass sleave within the crancase which the crankshaft runs in, has a hole.

The hole is...
Showing results 1 to 25 of 129
 
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