JDE's poor workmanship
 

Recently I've purchased the Wren's MW54 turbine kit from JD Enterprises.
I was so disappointed of their poor workmanship.

1) The main shaft cover does not fit to diffuser: Bore diameter of diffuser is 20mm but shaft cover has 21mm.
2) NGV dia.(54mm only, not 55.2mm) for turbine wheel was not sufficient for turbine wheel(54.5 mm).
3) Fuel pipe assembly is also bad, so I have to order new one to Wren UK.
4) Vaporizer tubes are made from the stainless tubing, however, you have to chage it to inconel if you want to keep your turbine in long life, Wren UK sells now new MW54 mk2 which was replaced to inconel tubing.

I have to remodel it to make a good engine because they have a policy of no refund.

If you are interested in Wren's turbine, I recommend you to purchase it directly from Wren co. in UK, they have the better skill than JDE and are very kind to your inquiry.

Jae

Korea

JDE MW-54
 

Hi Jae,

I don't own one of the JDE's Turbine but have heard nothing but good stuff from people who do own them. Their Turbine has just been AMA approved as well and I would be very surprised if they would have accomplished that especially if all the serious problems you mention are true. I'm curious - Have you tried to contact them directly to see if things can be resolved without getting a Refund?

Adil

54 Turbine
 

Hello Joe
I do not have record of a turbine engine sold to korea But if you had an issue with any of the parts which i wish to state come from Wren UK.
The orignal Vap tubes were stainles and the only reason they were changed to innconnel was for the Turbo Prop attachment because of increased combustion chamber temps.
I think sir before you came out publicly and made such statements you would have at the very least been courtious enough to have given JDE a chance to correct any problems you may have.
You have never contacted JDE and any warranty issues should be forward to JDE directly as the point of origin.

JDE's poor workmanship
 

Dennis you wouldn't happen to be a rep for JDE would you? -Steve

JDE
 

Was that last post tongue-in-cheek, or for real Steve?

Dennis is JDE---and, from all I have heard the last year or so, is a standup manufacturer.

Tom

Dennis and JDE are A-OK!
 

I MUST agree! Dennis and JDE are A-! I have delt with Dennis for over 5 years and he has always been a great person to do business with. Keep up the good work Dennis! :D

Stan McCrary

*rcnats*

JDE's poor workmanship
 

Hi

Dennis at JD enterprise is as good as they get.
He is into jets not just trying to make a buck.
Dennis knows what he is talking about when it comes to this hobby and will stick with you until all your questions are answered and under stood.

Will Dennis go the extra mile to make a customer happy?
No he will go 10.

Dennis you did not make a customer out of me!
You made a friend!

Johnny klinner

AKA johnnyjet

JDE's poor workmanship
 

I was just curious if he was, thats all nothing more. I didn't mean anything by it. -Steve

Workmanship
 

Wow Thanks to all who have given me such over whelming support I now mistakes are made after all we are all human but to complain about JDE with out first giving us a chance to address the complaint, and I have to go on and say what was the stage of the kit and just as the term implies it is a kit not a fully assembled engine but a kit of part's we all know there is some fitting and fussing but under know circumstance are the part's junk.
I have and will do my very best to address and correct a customer's complaint it my not always be what either side want's to hear but I promise to at the very least try my best.

JDE's poor workmanship
 

I have just spent the last nine hours in wrens workshop sorting out the absolute mess that has been made of my MW 54 derivitive made by a well known manufacturer. You have to see to belive what was done to my turbine wheel, they had ground away 4 turbine blades partialy to balance it, so, when at high revs whats left of the blade touched the NGV shroud and sounded awfull.I fitted a new turbine wheel, 2 bearings and a new NGV at cost to myself after ony eight runs. I did this because the company who made this engine have allready tried to correct the problem without success so I wasn`t prepared to pay another £90.00 to get it shiped to the factory again just for it to come back as bad as it went again.While there I decided to purchase a wren kit of Mike, it has taken me 4 hours to build this engine and is now ready to run. As mentioned in another post the tunnel did not fot through the ngv but a min or two with wet&dry and away it went.
I would suggest to any one who is thinking of buying a MW54 clone to get in touch with Mike Murphy and buy the real thing, he is the designer and he has got it right and my experience of this other manufacurer is not good and I will let every one I meet on the jet meets know the this paticular manufactuer is trash and not to buy one.

jason

JDE's poor workmanship
 

I've had nothing but good dealings with Dennis. Don't own a Wren, but bought his kits and accessories, never had a problem.

As far as Jason's post...hey, if you don't have the guts to mention this anonymous manufacturer, why are you telling us this? Kind of a useless, drivespace-wasting bit of rumormongering, isin't it?

huh?
 

trash????? get real! there are absolutely no currently manufactured turbines out there that are, as you so "mildly" put it, trash! (well, maybe an old sophia, but that's it!).

Spencer Maze
Los Angeles, CA

Workman ship
 

I don’t know to whom or what Jason is referring to, but I know and can factually state that this balance job did not come from JD Enterprise’s and to set the record straight the design and the parts come from Wren UK. I don’t like the fact Jason you are making statements on this forum subject and it make’s it sound like you bought the product from JDE so please either state where it came from and if it is not related to this subject make a new post and make your claim there.

Wren
 

I've got a JDE 54 Full Auto-start turbine from Dennis (JD Enterprises). I posted a lenghtly post about the turbine. JDE built the turbine which is ready to go. The turbine was flawless in performance AND IN WORKMANSHIP. I'm pretty damned picky with my money and my turbines. If it was even slightly screwed up guys, DO YOU THINK THAT I WOULD WASTE MY TIME DOING THAT BIG POST WITH A PICTURE OF THE TURBINE??
To the gentleman from Korea - Sir, JDE is a distributor for North and South America. How is it that Korea became part of this geographical location?
I've spent thousands of dollars in various products from JD Enterprises and have always been extremely satisfied. My questions were ALWAYS ANSWERED and if something wasn't right Dennis bent over backwards to correct the problem in any way possible!!! Because of the fact that Dennis has ALWAYS DONE RIGHT BY ME - HE WILL ALWAYS HAVE THIS CUSTOMER AS LONG AS HE IS IN BUSINESS AND HE CAN COUNT ME AS A FRIEND!!!!!!!
And when the Wren MW-44 comes out - I'LL BE BUYING THAT OFF OF HIM TOO!!!

JDE's poor workmanship
 

Calm down guys... this is starting to sound like what happened to CAI, rumors, rumors, and more rumors... -Steve

Rumors?
 

Sorry, No rumors here with my posting - Just raw FACTS.

JDE's poor workmanship
 

Guys,

Check out Jason's earlier posts and you'll find out who he's talking about. Jason is right not to mention openly who the manufacturer is, he doesn't want to start another flame war. I myself had a similar experience with a KJ66 derivative from a not so well known manufacturer. The turbine wheel was bored off center and every five or six runs I had to ship it back to them to replace bearings and re-balance the engine. Also the wheel was safe rated at 120Krpm and the max thrust output of the engine came at 135Krpm, so you can imagine what could have happened if I was unlucky enough to run the engine for more than those five or six runs. They serviced it twice in a season without noticing their mistake!!! The shipping, as well as the servicing, plus the foreign exchange difference cost me the price of a new engine. We all have to agree to one thing, us modellers pay for the manufacturers mistakes, R&D, faulty parts etc. A lot of people will sell us a product in it's design stage, then will come up with a million excuses for not supplying what you have bought nine months earlier on time. Then they will ship you something that is not perfect and will sell you, what they call, upgrades to it, just because it wasn't totally finished before they shipped it to you.

I hope that neither this post is going to start world war three, I just brought up a few thoughts, based on experience.

BRG
Chris

Dennis
 

SORRY! I didn`t intend to trash your engine in the slightest. My engine is not one of yours, and if it`s wren bits then it should be ok.
And as far as saying which manufacturer my engine was made by it would annoy some reps who scan this forum, but, You dont have to look too far to find out which one it is.

jason

JDE's poor workmanship
 

Well said Chris,
It's about time it was pointed out to the various
manufacturers that R&D is not the function of the customer, I
for one am absolutely fed up with doing the work that I have
paid a premium for when buying a kit/engine. In future I'm scratch building, I cant do any worse than some of the cr*p I've bought over the past few years................
Mike