DL-50 engine
10-06-2009 | 02:31 PM
#5726
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From: Sarasoa, FL
RE: DL-50 engine
Make sure to mount the high side toward the airstream. It does not work on ram air but ambiate air. I swallows the little buddles of fuel that are spit out by the carb and sucks it back into the carberator.
George jenkins, Troy Build Models.
George jenkins, Troy Build Models.
10-06-2009 | 05:22 PM
#5727
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From: Steamboat Springs,
CO
RE: DL-50 engine
Alright guys, now I'm really stumped.
As you may recall, I posted a few pages back about possible ignition issues. I thought I had it figured out by changing the battery, It started up easy and I even had it up in the air for a couple of flights. Well I took it back to the field a day or so ago and went to start it up. I started, but had a inconsistinent but definite miss, but that only lasted for a minute before the engine completly quit. I tried starting it for several minutes, but I would not go, so, I pulled the plug out a checked for spark. Out of 100 revolutions there was maybe 5 sparks, so this is seeming like my old issue. Is this sounding like a bad ignition? It is the only thing I think would cause this. Also, if it is the ignition, where can I find the best price on a replacement?
As you may recall, I posted a few pages back about possible ignition issues. I thought I had it figured out by changing the battery, It started up easy and I even had it up in the air for a couple of flights. Well I took it back to the field a day or so ago and went to start it up. I started, but had a inconsistinent but definite miss, but that only lasted for a minute before the engine completly quit. I tried starting it for several minutes, but I would not go, so, I pulled the plug out a checked for spark. Out of 100 revolutions there was maybe 5 sparks, so this is seeming like my old issue. Is this sounding like a bad ignition? It is the only thing I think would cause this. Also, if it is the ignition, where can I find the best price on a replacement?
10-06-2009 | 05:34 PM
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From: mojave desert,
CA
RE: DL-50 engine
rcexl ignition units arent that expensive,,compared to a c@h brand and you might replace your hall sensor too,,anything man made is subject to failure ,,,especially electrical stuff..
10-06-2009 | 06:55 PM
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From: Gales Ferry, CT
RE: DL-50 engine
Hi All,
I'm running a first generation DL50, have about two gallons thru it and just tweaked the low speed needle again. Fuel consumption is way down. I can fly 10 minutes of aerobatics on about 8 oz of fuel now and it's spinning a Mejzlik 22X8 @7450-7500 rpm. Low midrange vibration is less and transition to full throttle is much better. I am very happy with the power and performance with this engine.
Plane weighs 19 lb 2 oz and at 300' alt it has unlimited vertical.
I'm running a first generation DL50, have about two gallons thru it and just tweaked the low speed needle again. Fuel consumption is way down. I can fly 10 minutes of aerobatics on about 8 oz of fuel now and it's spinning a Mejzlik 22X8 @7450-7500 rpm. Low midrange vibration is less and transition to full throttle is much better. I am very happy with the power and performance with this engine.
Plane weighs 19 lb 2 oz and at 300' alt it has unlimited vertical.
10-06-2009 | 06:59 PM
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From: Steamboat Springs,
CO
RE: DL-50 engine
It's an almost new NGK. I put it in right before I made the first two flights with the engine, and that's all its been run. Also, the ignition battery is fully charged, so that's not the problem either. The ignition seems to be the only thing left.
10-06-2009 | 10:58 PM
#5733
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From: Miami beach, FL
RE: DL-50 engine
ORIGINAL: squeaky penguin
It's an almost new NGK. I put it in right before I made the first two flights with the engine, and that's all its been run. Also, the ignition battery is fully charged, so that's not the problem either. The ignition seems to be the only thing left.
It's an almost new NGK. I put it in right before I made the first two flights with the engine, and that's all its been run. Also, the ignition battery is fully charged, so that's not the problem either. The ignition seems to be the only thing left.
If all this doesn't help you, the ignition is probably RIP. Also keep in mind that a fully charged 5-cell NiMh or NiCd battery can damage the ignition module.
10-07-2009 | 07:35 AM
#5735
RE: DL-50 engine
The module can be tested independantly from the sensor before you go out and spend $80 on a new module, if it's the sensor they are only about $5. Call for details.
10-07-2009 | 10:40 AM
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From: Blackfoot ,
ID
RE: DL-50 engine
ORIGINAL: jedijody
You must be kidding, if a sealing compound wasn't used every one would be blowing bubbles all over out of the mating surface, not to mention non of them would run worth a crap from all the lost crankcase pressure.
ORIGINAL: Cyberwolf
I see that Jody seals up the crankcase halfs when reassembling, I presume the factory doesn't do this.
I see that Jody seals up the crankcase halfs when reassembling, I presume the factory doesn't do this.
So at the best they do use a sealant of some kind, but from the sounds of it either not enough or something that won't hold up.
10-07-2009 | 01:23 PM
#5738
RE: DL-50 engine
So having never even touched the crankcase bolts on a DL engine you presume the factory doesn't use sealant on the mating surface. Then knowing that thousands of their engines are out there boring holes in the sky and leaving smiles on their owners faces day after day, you hear of a couple that possibly have some miniscule leak and now the factory either doesn't machine the case mating surface properly or use enough of the proper sealant.
You must remember that novice people just getting into gas and or this engine line read these statements. Even though myself and other more intelligent individuals may know how to take such errant blanket statements, others with less experience or product knowledge may not. I would accept statements of inadequacy about an individual specimen but not ones that can shed an ill light on the entire product line that are unfounded and wholely untrue.
You must remember that novice people just getting into gas and or this engine line read these statements. Even though myself and other more intelligent individuals may know how to take such errant blanket statements, others with less experience or product knowledge may not. I would accept statements of inadequacy about an individual specimen but not ones that can shed an ill light on the entire product line that are unfounded and wholely untrue.
10-07-2009 | 05:46 PM
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From: Farmington Hills,
MI
RE: DL-50 engine
Get em Jody!! I am extremely happy with my DL and think the craftsmanship was done top notch. No complaints from me and I am the owner of two of these badboys! [>:]
10-07-2009 | 06:32 PM
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From: Miami beach, FL
RE: DL-50 engine
Well I put the new piston in, spark plug went in rough, took it out and some brittle spring fell out with it 
I guess this is a RIP heli-coil. What size do I need and are there any local stores carrying these things?
I guess this is a RIP heli-coil. What size do I need and are there any local stores carrying these things?
10-07-2009 | 06:59 PM
#5741
RE: DL-50 engine
Looks like your spark plug pulled the threads out of the head. The thread size is 10mm x 1.0. The Heli-Coil kits should be available at a good auto parts store or fastener wholesaler like Fastenal, the kits are a little spendy so you might try a good local small engine repair shop, it would be a common exersize for them.
10-07-2009 | 08:37 PM
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From: Miami beach, FL
RE: DL-50 engine
ORIGINAL: jedijody
Looks like your spark plug pulled the threads out of the head. The thread size is 10mm x 1.0. The Heli-Coil kits should be available at a good auto parts store or fastener wholesaler like Fastenal, the kits are a little spendy so you might try a good local small engine repair shop, it would be a common exersize for them.
Looks like your spark plug pulled the threads out of the head. The thread size is 10mm x 1.0. The Heli-Coil kits should be available at a good auto parts store or fastener wholesaler like Fastenal, the kits are a little spendy so you might try a good local small engine repair shop, it would be a common exersize for them.
I'll make some calls tomorrow AM or else I'll order a kit from Amazon. Not that expensive http://www.amazon.com/Heli-Coil-5542.../dp/B000CMJS7M
10-07-2009 | 08:47 PM
#5743
RE: DL-50 engine
That's what I mean, kind of spendy. You already have a new piston and ring, a new jug is only $15 more than that Heli-coil kit, or a Heli-Coil installed at a small engine shop would only cost about $10. When the cost of repair exceeds 50% of the new value I usually opt for replacement.
10-07-2009 | 08:56 PM
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From: Miami beach, FL
RE: DL-50 engine
ORIGINAL: jedijody
That's what I mean, kind of spendy. You already have a new piston and ring, a new jug is only $15 more than that Heli-coil kit, or a Heli-Coil installed at a small engine shop would only cost about $10. When the cost of repair exceeds 50% of the new value I usually opt for replacement.
That's what I mean, kind of spendy. You already have a new piston and ring, a new jug is only $15 more than that Heli-coil kit, or a Heli-Coil installed at a small engine shop would only cost about $10. When the cost of repair exceeds 50% of the new value I usually opt for replacement.
I'm afraid it's gonna be hard to find a repair shop here in Miami. 10Mx1 is a not so standard size. I'll let you know tomorrow AM for the cylinder.
10-07-2009 | 09:05 PM
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From: Blackfoot ,
ID
RE: DL-50 engine
ORIGINAL: jedijody
So having never even touched the crankcase bolts on a DL engine you presume the factory doesn't use sealant on the mating surface. Then knowing that thousands of their engines are out there boring holes in the sky and leaving smiles on their owners faces day after day, you hear of a couple that possibly have some miniscule leak and now the factory either doesn't machine the case mating surface properly or use enough of the proper sealant.
You must remember that novice people just getting into gas and or this engine line read these statements. Even though myself and other more intelligent individuals may know how to take such errant blanket statements, others with less experience or product knowledge may not. I would accept statements of inadequacy about an individual specimen but not ones that can shed an ill light on the entire product line that are unfounded and wholely untrue.
So having never even touched the crankcase bolts on a DL engine you presume the factory doesn't use sealant on the mating surface. Then knowing that thousands of their engines are out there boring holes in the sky and leaving smiles on their owners faces day after day, you hear of a couple that possibly have some miniscule leak and now the factory either doesn't machine the case mating surface properly or use enough of the proper sealant.
You must remember that novice people just getting into gas and or this engine line read these statements. Even though myself and other more intelligent individuals may know how to take such errant blanket statements, others with less experience or product knowledge may not. I would accept statements of inadequacy about an individual specimen but not ones that can shed an ill light on the entire product line that are unfounded and wholely untrue.
Be sure I will never do any busniss with Valley View again thanks to your rudness and arrogant attitude.
10-07-2009 | 09:18 PM
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From: Miami beach, FL
RE: DL-50 engine
ORIGINAL: jedijody
Next day shipping is, again, kind of spendy. 10mm x 1.0 IS a standard metric thread size, Honda uses it alot.
Next day shipping is, again, kind of spendy. 10mm x 1.0 IS a standard metric thread size, Honda uses it alot.
I'll make some calls tomorrow to see if I can find someone to help me out. Thanks for your help.
10-07-2009 | 09:29 PM
#5748
RE: DL-50 engine
I managed to strip one of the muffler bolt holes out in mine. It is m5x.8 I bought a complete heli-coil kit on ebay for $5.00 and fixed it in 10 minutes. Try ebay, lots of different size kits there.
10-07-2009 | 09:46 PM
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From: Red Wing,
MN
RE: DL-50 engine
Cyberwolf, You build engines for a living? That's hard to believe, if you don't realise that two, even well machined surfaces, need some kind of sealant to make an air tight seal. I'm not sticking up for Jody I just find it hard to believe that you have that much experience with a question like that.
10-07-2009 | 09:51 PM
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From: mcallen, TX
RE: DL-50 engine
ORIGINAL: Cyberwolf
I asked a simple question and get jumped on by you, thanks for not anwering my question. I happen to own a automotive machine shop and build engines of all sort each day of the week ,so i'm not a novice of any sort. I didn't presume anything just asked if the factory used any sort of a sealant on the case havles and get a ration.
Be sure I will never do any busniss with Valley View again thanks to your rudness and arrogant attitude.
Be sure I will never do any busniss with Valley View again thanks to your rudness and arrogant attitude.
As Paul said.... is really weird to read from an "expert" a questions like that.
