If you have a JR tx, use a throttle curve and move 'point 3' to 30% leave everything else as it was, should be bang on.

Regarding throttle/carb non-linearity.... another point to consider. The relationship of the take-off points at the servo and the carb arm. The DL's I've gotten have a fiber "arm" that can be installed on the carb, or (as I've done) modify the throttle butterfly shaft to take the blue aluminum arm that comes in Hitec servos that can't be used for real control surfaces. That makes the take off point on the carb to be roughly 5/8" from center.

Then, on the servo, use an arm of 3/4", and adjust it so that the arm is moving nearly straight during the idle and low throttle movements (for those not familiar, this is "mechanical expo and differential").

When setup this way, there is very good resolution and sensitivity of response from the engine at the very low stick movements (desired), while becoming somewhat "numb" toward the top 1/3rd of stick travel (also desired).

Then, apply the curve/mix from the TX features to fine tune.

For many, this will be way too much work, energy, time, and effort, and will require too much planning..... for those, you'll never be happy with the response of these engines and carbs. They simply are not linear at all, nor sensitive enough where we need them to be.

Hi,

I still have the old engine mount stand off, and would like to replace for the new one. How long are they, 3"? Let me know. I have the engine on a GP Yak 54 and it's tail heavy so 3" will good for me to balance. Anybody else use the GP Yak. not a bad plane but not much clearance for the prop. I broke a prop last year because of the soft landing gear, it flex a lot.

Eric

another picture of the new one

I notice on the ignition it says SV

I think this is one of those SV or HH motors from China, not a DL.

Yea, I agree. Just checked DL usa web page, did not see any mention of a version 3 for the DL 50. I think if their really was, those guys would be one of the firsts to let us know!

Has SV / HH / LSPRO or what ever brand you want to choose colouring, and prop bolt pattern, crankcase style etc

I would say its a new version SV 50, but not a new DL50

What's funny is they are using the reed off a Homelite Super XL.

I know because it's the same reed as the 48cc BME twins use.

Sorry for the delay in responce but the pictures are direct from the manifacturer. SV engines claims to be the manifacturer of he DL Engine Line and is producing both the DL50 V3 and DL100.

They have the DL50V2 but have claimed to have inproved it by changing reed valves for more power and changing the case to fit internal changes to lower vibration. it also looks more like a DA. I did not ask why they changed from 4 to six bolt pattern.

I have both a DL100 and DL50V3 on the way for testing and if all goes well the Planes will be ready to take to Joe Nall for all to see.

Although anything is possible, and admittedly the pictures of the DL100 on DLEnginesAustralia and DLUSA are most probably of one of the prototypes of the engine, the engine shown in PerFlight's post is very different to the engines shown on these web pages. Besides the obvious difference of the milled / cast engine case, the prob hub and engine mount are also vastly different.

Cheers
Pupmeister

From DLEnginesAustralia


and from the previous post

The SV version looks better .

Notice the DL100 is version 2 could your picture be version 1? the DL50 V2 has webing also on the front of the case.

Maybee the guys from DL USA could chime in here and let us know what really is going on. I read in this thread to be carefull of who you are buying a DL, some were 2nd hand refurbs being sold. I would not buy one unless it was from DL USA, this way you know it is the real deal, and you know it has been checked, has warranty and support. If their really is a version 3 then swee!!!!

I agree if SV group are said that New 50CC engine are the one they do modify from DL-50 v2 and make some improvment . but claims tha DL engine are made by them? I dont think it's true. I know the guy who made DL engine , his Chinese name is Dong Lin. that's why the engine call DL .like DA are from Desert Aircraft . as an friend of DL. we build the cylinder parts in the same factory (made 3mm cylinder too) . so only things I can think is SV group make copy from DL( see the cyclinder have no mark of DL. and all DL cylinder should have the DL-50 MARK on it) and try to confuse everyone who know the big name of DL but SV. it's cross of my main how ever. if this New SV engine are as good as it look, donts matter it's us DL brand or SV brand or any other brand , it's will be good for the people who like to buy because SV always have advantage about low price for sure , ha ha ")

I have a version 2 (?) and am very pleased. I think its' a stretch to think DL would come out with a new version and not sing it's praises. This whole business sounds fishy to me.

I think Tomy explained it pretty clearly. [)]

Greetings all,

In reference to the "DL50 V3" pictured in previous posts:

The pictured engines are NOT, repeat NOT DL engines. It appears that they may be prototypes of engines made by SV or whoever, using some of the parts from the DL engines but with different crankcases. Also, SV does NOT, repeat NOT manufacture any part of the DL engines.

Regards,
Bob
www.dlusa.net

I just Googled SV and found a picture of the above engine at http://www.unitedhobbies.com/UNITEDH...idProduct=5732. There you go.

It is as I thought, Watsona factual error.

Just as I thought also. Dont know or read much about the SV engines or if they are any good? Seems like something in the back of my mind is telling me to stay away from SV.

We can also confirm it is NOT a DL Engine.

We have an email from DongLin of DL confirming so. And also that SV do not make parts for DL, and they have not directly sold DL parts to SV either.


Cheers

Scott
DL Engines Australia

It does appear DL's cylinder supplier has not made DL it's exclusive client. [&o]

Also in his pics it states its a CM6 plug, looks to me more like a 14mm plug that SV use, not a 10mm CM6.

Possibly just the photo angle, but looks like the standard bigger stick through the cowl plugs that SV use with thier engines also.

just confirm from Mr Dong, the DL has no V3, Now are all V2, he told us that someone just want to copy his engine. and that thing is true that DL100 V1 has not come, but will be soon. So why shows a DL100 V2???

Thank goodness SV doesn't make DL engines. It is just my opinion but I think SV engines are inferior to DLs.