By continuing to use this site, you agree to our use of cookies. Find out more

Member postings for Ultymate

Here is a list of all the postings Ultymate has made in our forums. Click on a thread name to jump to the thread.

Thread: Model flying photos you're proud of
16/03/2017 17:22:48

A couple of shots from yesterday, first spring like day

Thread: Government Consultation
05/03/2017 11:05:03

This came to me via a mate who's a member of the LMA, the source of this link, you can participate in the consultation online or via email

**LINK**

Thread: DLE 55 manifold length
08/02/2017 17:29:17

Having a gap makes it easier to use a puller should it become necessary possibly

Thread: EME 120 flat twin engines
28/01/2017 14:44:47

Those "silencers" will make your ears bleed !!!

Thread: Acquainting myself with a Walbro carby
27/01/2017 11:54:48
Posted by Adrian Smith 1 on 27/01/2017 09:46:37:

Why would DA grind the carb number off I ask my self? Bit of a naive question I suppose. I know OS leave it on there.

Because DA do significant internal modifications to the standard Walbros

Thread: My EME 60 petrol engine has arrived!
17/01/2017 20:29:55
Posted by Jon Harper - Laser Engines on 17/01/2017 19:23:43:

No that's pretty good, and for my own information its handy as I know how it performs vs our 360v (58cc v twin). Just knowing where we sit in performance vs other engines is always helpful as I am often asked for comparisons as models usually quote the petrol cc size at this end of the market. I'm also just really nosey

Are you running petrol or methanol in your V twin ?

29/12/2016 11:44:08

Stihl list three types of two stroke oil, the "cheapest" has a red dye in it and is a mineral oil which I have used for more years than I care to remember in all my chain saws strimmers and models and have never had a problem with. They now have a "medium" priced semi synthetic which has a green dye added and also with a green dye is their highest price fully synthetic Stihl Ultra. All can be run at 50:1 although I run all my gear at 40:1 working on the premise that oil is cheaper than engines

Thread: Time to confront problem with my OS60GTs petrols
21/12/2016 12:29:22
Posted by Manish Chandrayan on 21/12/2016 10:34:48:

Ultymate - I know DA uses Ali bolts and does not recommend reuse, but umm! DLE? Are you sure? I need to go check my engines with a magnet today

I've just been out to my trailer and checked my Dle 120 and 55 they do have steel bolts although alloy in colour, I have three 3W's a 140 twin a 100 twin and 60K short all quite long in the tooth and they all have alloy stretch bolts, I don't have a DA at present I know they have alloy bolts which are usually anodised red, I also run a ZDZ 80 which is using steel. So my mistake with the DLE's blush

21/12/2016 10:05:02
Posted by Jon Harper - Laser Engines on 21/12/2016 09:48:25:

There seems to be enough instances of cylinders escaping without seizure for me to consider it a bad idea. It also seems strange that they should seize so readily/violently. In the case of my designs though its not an issue as the bolts are far longer so that setup wouldnt work anyway.

But, we are drifting from the subject a little and the failure of the castings on the OS is of greater concern than the bolts

Perhaps said cylinders "escaping" as you put it may be down to people/.owners using the alloy stretch bolts more than the recommended once after a strip down for whatever reason.

21/12/2016 09:14:41
Posted by Jon Harper - Laser Engines on 20/12/2016 22:44:26:
Posted by Ultymate on 20/12/2016 22:34:44:

Are the set screws that fasten the cylinder barrel to the crankcase steel on the OS, they look like they are in your photos? Most of the engine manufacturers use aluminium ones, I'm talking 3W DA and DLE to name but three. They do so that in the event of a seizure be it partial or complete said aluminium bolts/set screws shear and no damage is done to the crankcase. I have seen a few engines that have blown "jugs" off in this manner down to either lean runs or poor baffling in a cowl and it's consequential overheating.

Ali bolts....are you sure?

Yes been that way for yonks, no problem until you get a seizure  If you think about it and you're unlucky enough to have a seize up it pops the jug off engine stops immediately, you may need a barrel and piston but you won't have a crankcase ripped open !! you may however have a deadstick landing to deal with

Edited By Ultymate on 21/12/2016 09:26:17

Edited By Ultymate on 21/12/2016 09:27:46

20/12/2016 22:34:44

Are the set screws that fasten the cylinder barrel to the crankcase steel on the OS, they look like they are in your photos? Most of the engine manufacturers use aluminium ones, I'm talking 3W DA and DLE to name but three. They do so that in the event of a seizure be it partial or complete said aluminium bolts/set screws shear and no damage is done to the crankcase. I have seen a few engines that have blown "jugs" off in this manner down to either lean runs or poor baffling in a cowl and it's consequential overheating.

Thread: EME 120 flat twin engines
19/12/2016 09:49:13

Cymaz, regarding your "cowl fitting" statement the dimensions of the EME and DLE 120's the width of both is exactly the same with or without plugs and connectors

Thread: Christmas wishes
12/12/2016 10:43:02

All the best everybody

Thread: EME 120 flat twin engines
20/11/2016 20:36:16

I've just about finished running in a DLE 120 and up to now it's been brilliant, your EME looks very similar with the angled plus etc If your engines as good I'm sure you won't be disappointed. My DLE is ripping a Mejzlik 28x10 carbon which I've just replaced with a 26x12x3 blader from Elster Modellbau in Germany. A friend had an onboard starter on a DLE 30, it added about a pound in weight which upset the C/G and upped the wing loading a fair bit.

Thread: DLE 20/petrol engines - remove throttle return spring?
16/11/2016 16:12:29
Posted by Rich2 on 16/11/2016 12:20:35:

I don't understand the question! What performance issues? The spring does nothing apart from return to idle.

I would not be concerned with battery drain - I've never had problems leaving the springs attached. And the load on flying surfaces would mostly be aerodynamic rather than from the hinges.

The spring does have more than one function, it limits end float on the butterfly and it's shaft. If you remove it totally the butterfly vibrates within the alloy body of the carb and over a relatively short time you'll have a carb that's fit only for scrap. Just leave it connected it'll not overload your servo and in the event of a linkage failure your engine will not go to full throttle

Thread: Model flying photos you're proud of
30/10/2016 15:14:39

Another one of Ron Sweeney's models

Thread: The 'share your photos' thread (not model flying)
28/10/2016 09:23:24

The wife and I took our friends children to the local zoo a couple of days ago and this is one of my shots from the day, I think I'd title it "Just Passing"

Thread: Model flying photos you're proud of
24/10/2016 16:45:50

A couple more

24/10/2016 13:41:06

I Presume that would be Arrowe Park then?

24/10/2016 10:24:04

Combining two interests, wildlife and models

Magazine Locator

Want the latest issue of RCM&E? Use our magazine locator link to find your nearest stockist!

Find RCM&E! 

Latest Forum Posts
Support Our Partners
Pepe Aircraft
Slec
Wings & Wheels 2019
electricwingman 2017
Cambridge Gliding Club
Gliders Distribution
CML
Advertise With Us
Sarik
Latest "For Sale" Ads
Do you use a throttle kill switch?
Q: This refers to electric-powered models but do you use a throttle kill switch?

 Yes
 No
 Sometimes
 Rarely

Latest Reviews
Digital Back Issues

RCM&E Digital Back Issues

Contact us

Contact us