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DLE30!

Old 07-10-2010, 02:52 PM
  #3426  
DaddySam
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Default RE: NEW DLE30!

Pat,
Thanks as always for your advice. The gasket material between the carb and the back plate seems good and thick - I can't believe there would be an air leak there. As soon as we richened the needle it stopped the way it should. When I leaned it out again (trying to eliminate mid range burble), it started to keep running when the carb was all the way closed. Richen the low end again, it started stopping as it should. I did back the high needle off a few hundred RPM from max, but I still can' t believe the power this engine puts out. Very well mannered, and flies the 10.5 lb Edge for 15 minutes with half a tank left over (12 oz tank).
Old 07-12-2010, 01:16 PM
  #3427  
airega1
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Default RE: NEW DLE30!


ORIGINAL: Tired Old Man

Three things will prevent an engine from stopping at idle cut off. Lean, heat, and an air leak. An ultra lean low end idles down extremely slow and can be difficult to shut off. If the high end is too lean the engine could be a bit hot and contribute to pre-ignition which would let an engine continue running (badly) after the ignition was turned off.

You might possibly have a small air leak at the base of the carb but if it works good now don't fix it
Here's four, if the throttle plate isn't positioned correctly the plate will bind and not close completely, this happened to me while flying, I noticed I couldn't get the engine to a low idle, I had to line up and kill the ign. I looked it over and found that the throttle plate came loose and turned just enough to have it bind.
Old 07-12-2010, 03:04 PM
  #3428  
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Default RE: NEW DLE30!


ORIGINAL: airega1


ORIGINAL: Tired Old Man

Three things will prevent an engine from stopping at idle cut off. Lean, heat, and an air leak. An ultra lean low end idles down extremely slow and can be difficult to shut off. If the high end is too lean the engine could be a bit hot and contribute to pre-ignition which would let an engine continue running (badly) after the ignition was turned off.

You might possibly have a small air leak at the base of the carb but if it works good now don't fix it
Here's four, if the throttle plate isn't positioned correctly the plate will bind and not close completely, this happened to me while flying, I noticed I couldn't get the engine to a low idle, I had to line up and kill the ign. I looked it over and found that the throttle plate came loose and turned just enough to have it bind.
<hr />Wow...how do you think the throttle plate got loose? Just think of the damage that could occur if a little screw sucked into the engine! What is best fix? Capt,n
Old 07-12-2010, 03:15 PM
  #3429  
jedijody
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Default RE: NEW DLE30!

Take the screw out, clean it and the threads in the throttle shaft real good, use Loktite 271 and reassemble, it will be there forever.
Old 07-12-2010, 03:16 PM
  #3430  
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Default RE: NEW DLE30!


ORIGINAL: airega1


ORIGINAL: Tired Old Man

Three things will prevent an engine from stopping at idle cut off. Lean, heat, and an air leak. An ultra lean low end idles down extremely slow and can be difficult to shut off. If the high end is too lean the engine could be a bit hot and contribute to pre-ignition which would let an engine continue running (badly) after the ignition was turned off.

You might possibly have a small air leak at the base of the carb but if it works good now don't fix it
Here's four, if the throttle plate isn't positioned correctly the plate will bind and not close completely, this happened to me while flying, I noticed I couldn't get the engine to a low idle, I had to line up and kill the ign. I looked it over and found that the throttle plate came loose and turned just enough to have it bind.
Or the throttle servo end point isn't quite right.
Old 07-12-2010, 03:51 PM
  #3431  
airega1
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Default RE: NEW DLE30!


ORIGINAL: jedijody

Take the screw out, clean it and the threads in the throttle shaft real good, use Loktite 271 and reassemble, it will be there forever.
Listen to Jody, just make sure the plate doesn't bind anywhere upon closing
Old 07-12-2010, 09:27 PM
  #3432  
bigtim
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Default RE: NEW DLE30!

so I am working out the mounting of my engine directly to the firewall, not with a extra extended firewall like many have done and have had trouble finding long enough bolts to do the job, I would love to use cap head screws but there doesn't seem to be many around that will work for length and dia.

any sources out there for a longer bolt 3.5" that will work with the rear carb engines,I did pick up some all thread and the coresponding nuts and washers, but I would prefer to use a bolt to anchor the engine directly to the firewall
Old 07-12-2010, 10:35 PM
  #3433  
OldRookie
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Default RE: NEW DLE30!

Check out Fastenal. They have almost anything you need.
There are 2 of these stores within 10 miles of me in Minnesota. They also mail order. You can buy one or one thousand.

http://www.fastenal.com/web/home.ex

Greg
Old 07-12-2010, 11:22 PM
  #3434  
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Default RE: NEW DLE30!

http://www.mcmaster.com
Old 07-12-2010, 11:27 PM
  #3435  
trickpony4
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Default RE: NEW DLE30!

This is a great place to look also!

[link=http://www.boltdepot.com/product.aspx?cc=6&cs=8&cm=6&cd=1275]Bolts[/link]

Old 07-13-2010, 12:02 AM
  #3436  
bigtim
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Default RE: NEW DLE30!

thanks guys that was a huge help doping around searching didn't help at all should have asked here first.
Old 07-13-2010, 07:41 AM
  #3437  
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Default RE: NEW DLE30!

I believe I used 10/32 Phillips Panhead screws with loctite into blindnuts and they're holding fine

I have a decent screwdriver that tightened them well
Old 07-14-2010, 05:47 PM
  #3438  
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Default RE: NEW DLE30!

Hello All,

Is there anyone who use a 3 blade prop is this engine? What is the size and the rpm??

THX
Old 07-14-2010, 06:16 PM
  #3439  
CK1
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Default RE: NEW DLE30!

I put the DLE 30 side carb version in my H-9 Cessna 182 . I needed a 3 blade prop for ground clearance and ended up using the Graupner 16x18 3 blade ,getting 8200 rpm on a slightly rich , new engine . I tried a Biela 17x10 3blade and only got 7000 rpms . I got much more pull from the higher rpms with the Graupner 16x8 but if I could find a 17x8 3 blade in a carbon fiber prop I think it would be a great match....
Old 07-14-2010, 06:27 PM
  #3440  
Pistu
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Default RE: NEW DLE30!

Yepp I have a 17x10 now and it is a little bit to mutch. I'm wondering in a 18x6 size, but 17x8 seems to be a good choice.
Old 07-15-2010, 12:07 AM
  #3441  
Tired Old Man
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Default RE: NEW DLE30!

Try cutting the tips back 1/4" and reshaping the cross section to get a good aspect ratio. It works. I just did a Fuchs 17-11.
Old 07-15-2010, 03:33 PM
  #3442  
ipsik
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Default RE: NEW DLE30!



Anyone have any info on the carb on the V2 rear intake?  It is marked DLE on the metering diaphram cover and on the pump diaphram cover but is not exactly the same as the original Tillotson made Walbro copy. Mine is a bit fussy and I have to retune the low end for the temp and pressure it seems. Plus it does not like to stay running inverted ( with the metering diaphram down).



 



Maybe I should just replace it.

Old 07-15-2010, 07:38 PM
  #3443  
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Default RE: NEW DLE30!

Yes the DLE 30 side & rear intake carbs are a little touchy. Set it best you can and fly, fly fly and then fly somemore. Get it broke in good, fine tune as you get time on it. Do not try all kinds of things that make it quit. Just fly the sucker!!!!! Capt,n
Old 07-17-2010, 05:35 PM
  #3444  
Howard
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Default RE: NEW DLE30!

Can you reverse the DLE 30 (side carb) carburetor 180 deg? I am building an Aeroworks Cessna 195 and it would be very advantageous to be able to turn the carb 180 deg. Has anyone done this?

Howard
Old 07-17-2010, 05:40 PM
  #3445  
w8ye
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Default RE: NEW DLE30!

Just change the ignition timing to the other side of top dead center

Edit: I thought I read he was asking how to reverse the engine rotation?

Old 07-17-2010, 06:25 PM
  #3446  
captinjohn
 
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Default RE: NEW DLE30!


ORIGINAL: Howard

Can you reverse the DLE 30 (side carb) carburetor 180 deg? I am building an Aeroworks Cessna 195 and it would be very advantageous to be able to turn the carb 180 deg. Has anyone done this?

Howard
<hr />
Yes it is ok to turn the carb. Capt,n
Old 07-18-2010, 08:28 AM
  #3447  
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Default RE: NEW DLE30!

off topic really guys... sorry... friend of mine has this engine... flying with 18x8... its a little too fast for him at landing time... what you guys recommend? 19x6? and when does the idle become nice and low? or how does one do it without the engine dying?... leaner LSN perhaps? at moment its above 2K rpm... lower and it wants to die... we live at sea level if it will make difference... thanks
Old 07-18-2010, 08:51 AM
  #3448  
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Default RE: NEW DLE30!

I broke mine engine in on a 20x6 and continue to fly on that prop. The 6 pitch will slow your landing speed a bit. Read some of the earlier tuning posts, but in short, lean your low speed needle until it wont take a quick throttle, until after the engine is warm. I left my idle rpm at 2000 rpm, and my engine has never died.
If you need a slower idle, on landing approach trim down a click or 2.
One last thing that I always add. I run Pennzoil air cooled oil at 32:1 and a NGK cm6 plug. From my own experience, if your still having trouble, try a different brand of gas. I personally run CITCO premium it seems to run the best and doesn't have any alcohol. Just my 2 cents.
Old 07-18-2010, 10:20 AM
  #3449  
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Default RE: NEW DLE30!

will it be easier for a smaller pitch to have lower idle than bigger pitch? or doesn't it matter... say 19x8 vs 19x6...
Old 07-18-2010, 10:41 AM
  #3450  
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Default RE: NEW DLE30!


ORIGINAL: Switch_639

will it be easier for a smaller pitch to have lower idle than bigger pitch? or doesn't it matter... say 19x8 vs 19x6...
<hr />The lower pitch 19x6 will not help the RPM to be less....but it will allow you to idle the engine at around 2000 RPM without the airplane wanting to posssibly creep forward. I hope this helps. Capt,n

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