Rack-Mounting An Airplane Engine

Discussion in 'Rack Mounted Engines' started by 5-7HEAVEN, Dec 2, 2008.

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  1. 5-7HEAVEN

    5-7HEAVEN Guest

    Last edited by a moderator: Dec 2, 2008

  2. graucho

    graucho Active Member

    I think that would be a first. I always believe anythings possible.
    Looks like the mounting plate is in the back. I think a person would need a
    jackshaft setup to bring the chain back into alignment with the sprocket.
    Also I think with that torque and power you will need a solid wheel?
    That would be a dream engine on my avatar's bicycle project im going to resume
    next summer.

    I also copied the photos and spec's in case the auction's post ends. Nice find. Cool.

    DL-100 Twin 100CC Specs:

    Output Power: 10.2HP at 7500rpm
    Idle Speed: 1400 rpm
    Static Thrust: 52.9lbs at 100 meters altitude
    45.6lbs at 1800 meters

    Displacement: 101.6cc
    Bore and Stroke: 43mm*35mm*2
    Compression Ratio: 7.5: 1
    Weight: 2950 grams / 6.5lbs.

    Fuel: 2C Regular Gas mixed 30: 1 - 45: 1 (petroleum based for break in,
    Synthetic thereafter)
    Propeller: 27*10 benchmark; 26*10; 27*12; 28x10
    Ignition Battery: 4.8 to 6.0 Volts >=2000Mah
    Replacement Spark plug: NGK CM6 or equivalent
    Gap: 0.018" to 0.020"
    Installation torque: 7 to 8 ft-lbs.

    2Cycle air cooled
    membrane pump carburetor with manual choke.
    Automatic advancing electronic ignition.

    Wholesale are welcome -- sylvian1975@yahoo.com.hk

    *Ship by Hong Kong Post Office Registered Mail (Air Shipping)
    *Will ship to worldwide
    *Notification will be sent to buyers.
    *Real-time online tracking service
    *Save on shipping, pls check additional items now from our other listings.

    Attached Files:

    Last edited: Dec 2, 2008
  3. 5-7HEAVEN

    5-7HEAVEN Guest

    Yeah, it'd make an awesome bike engine.

    Mounting the engine shouldn't be a problem, it being light and compact except for its snout.

    Installing a clutch is the biggest obstacle, I believe. Then the pulleys or sprockets.

    Any suggestions for a clutch?:detective:
  4. Skyliner70cc

    Skyliner70cc Active Member

    Some problems you will experience with this engine:

    1. Overheating. THese engines do not have large cooling fins and rely on prop wash and forward movement through the air which is directed into a cowl for for cooling.

    2. Battery for ignition system. You'll need to carry a powersource for the electronic ignition system.

    3. Starting? No pull start. These engines are typically hand propped or started with a large electric starter. Your tranny system must allow a pedal start.
  5. n8ygn

    n8ygn Member

    good find

    This one has everyone thinking now I bet. Who knows, I never flew a whizzer to work. Im sure someone will try the motor now that they have seen this and I am waiting to hear about that one. Dane
  6. 5-7HEAVEN

    5-7HEAVEN Guest

    I think it might be done with pulleys, maybe with an idler like a GEBE or Whizzer has. That way the engine can be engaged and disengaged with a lever or cable for starting and idling.

    A 12-volt battery can be installed for ignition.

    Just brainstorming.:hammer:
  7. Skyliner70cc

    Skyliner70cc Active Member

    You still haven't solved the cooling problem. These high performance engines run hot and cooling is occasionally an issue with cowling interior baffle design to get air to hit cylinder heads just right. I've been flying RC airplanes for 30 years and have owned similar engines in 1/3 scale airplanes.
  8. Happy Valley

    Happy Valley Active Member

    Heh, I don't know 5-7, couple short wings and we're talking take-off here. LOl, it might be time for you to be thinking about a motorized.....cycle to get the power you're itching for. :devi2l:
  9. 5-7HEAVEN

    5-7HEAVEN Guest

    Skyliner, I appreciate your many years of experience. I also read the thread posted earlier this year regarding a thread of similar interest. You posted links there that were very informative.

    Happy, when I had 1.6hp-2.2hp, I stuck to sidewalks and bikepaths. With dual engines, I'm on the main road, unless the cars driving 45mph try to "urge" me off to the side. Besides, I need more power to tackle two hills near home, and to keep up with city traffic.

    Two mild pocketbike engines used in a safe manner should have more than enough to satisfy my needs.

    I was curious to know if installing an airplane engine was practical. According to Skyliner it's not, and I believe him.(Altho sometimes I have to learn the hard way.)

    Nah, no motorcycles for me. My insurance agent won't sell me coverage. Besides, I'd be in the midst of a herd of stampedin' metal ponies with inattentive riders.
  10. az cra-z

    az cra-z Guest

    Heck, why NOT use a prop? You'd probably want to enclose it in a cage of some sort to keep "little fingers" out. The sound would be awesome!
  11. 5-7HEAVEN

    5-7HEAVEN Guest

    Propelling my bike?

    I thought about it, but I KNOW the local police would DEFINITELY pull me over, even with a full screen/cage surrounding the prop.
  12. n8ygn

    n8ygn Member

    photo of simular motor off bike

    This photo is from a monarch scooter on ebay for another 1hr or so. Check out the finned flywheel could cool down motor some another idea a fan like on a old corvair need to be smaller though like one on a larger 480 motor they are made of plastic and aluminum now. Im just full of idea's there not always right though. At least I think my boss said ideas. I am editing this information in also the cast aluminum fan blade is balanced and blows back like what you would need but for about roughly 1800 rpms not sure about up to 7 or 8k Dane

    Attached Files:

    Last edited: Dec 3, 2008
  13. KilroyCD

    KilroyCD Active Member

    When I first read the title of this thread, I thought someone was going to try to mount something like a Rotax engine or a 65hp Continental from a Piper Cub. Then I started thinking that someone was going to try a radial (like the bike in the attached photo). But I see it's an RC engine. Being a boxer design, I wonder if the resulting bike would end up sounding like an old VW Beetle? :tt2:

    Attached Files:

  14. Skyliner70cc

    Skyliner70cc Active Member

    Trust me, if I could install a DA100 or a 3W engine on my bike, I would in a hearbeat. This would be one Id consider if I could afford to get a custom head milled with extra cooling fins. http://www.brisonrcengines.com/bri3u.htm The crankcase is tapped for smoke. Can you imagine smoking out those pesky cagers :)
  15. graucho

    graucho Active Member

    I know nothing about plane engines. I take it none of them are liquid cooled? Just the cooling from the prop?

    Also Kilroy... that bike photo is insane! Thanks
  16. seanhan

    seanhan Member

    Better find out first what Fuel it uses.
    I was big time into r/c years ago, and I used Model fuel called Missle Mist It had 15-20% Nitromethane. Stuff cost $ 30.00 a gallon back in the Late 70's.
    R/c engines in general use castor oil based fuel for Lubercation.
  17. 5-7HEAVEN

    5-7HEAVEN Guest

    Several use spark plugs, 2-stroke fuel and electronic ignition
  18. n8ygn

    n8ygn Member

    rc motor

    I read the motor breaks in on gas then sinthetic after that not sure what is meant by sinthectic don't think I would want to sit a strattle of nitromethane like the one quy said take a lot of beer to get that fire out. Kilroy that 40hp rotax bike talk about a crotch rocket Whizzer,also that is a wild ride with the rotary engine I copied the photo to take to work to show the guys.. Dane
  19. Skyliner70cc

    Skyliner70cc Active Member

    The larger engines run on gasoline as it would be too expensive to run it on nitromethanol fuel.

    Most of the gas model airplane engines run on 50:1 after break in. I don't know of any liquid cooled engines. Most airplane engines are aircooled and same applies for model engines.

    Cooling comes from prop airflow and airflow of plane's movement forward pushing air into cowling. Cooling is a big time issue. I saw a competitive builder/flyer loose a 24 month project plane that he was invited to fly in a special international competition. He has 12k into it and his engine overheated on its maiden flight. My wife quit going to the rc field with me after she witnessed the crash and saw the grown man cry.
    Last edited: Dec 4, 2008
  20. loquin

    loquin Active Member

    Wow - better hope that rotary engine never throws a rod...! :sweatdrop: You might end up with an unintended vascectomy.