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self starters
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- Posts: 335
- Joined: 18 Mar 2015, 08:18
- Location: West Wales
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self starters
Hi all,
looking to pick an engineers brains! I'm going to make a self starter for my DLE170, just because.
I've nicked the idea from MVVS, and using a bendix starter from a scooter it should be very easy to implement, I just need to know where to look for the gear ring that mounts to the prop driver - any ideas? Obviously I have to find the right pitch to match the starter but any clues to get me off and running would be very welcome.
Cheers, Ell.
looking to pick an engineers brains! I'm going to make a self starter for my DLE170, just because.
I've nicked the idea from MVVS, and using a bendix starter from a scooter it should be very easy to implement, I just need to know where to look for the gear ring that mounts to the prop driver - any ideas? Obviously I have to find the right pitch to match the starter but any clues to get me off and running would be very welcome.
Cheers, Ell.
Re: self starters
Elliot
FEMA do a number of different on board electric starters and list the gears separately.
http://www.fema-modelltechnik.de/Neue_D ... 14_eng.pdf
John M
FEMA do a number of different on board electric starters and list the gears separately.
http://www.fema-modelltechnik.de/Neue_D ... 14_eng.pdf
John M
- Antonia
- Posts: 140
- Joined: 17 Mar 2015, 22:30
- Location: Oxfordshire
Re: self starters
Interesting the way FEMA is using a spragg bearing in the main toothed prop freewheel, does away with old fashioned Bendix method, very neat..
Antonia -(from her hospital bed)
Antonia -(from her hospital bed)
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- Posts: 335
- Joined: 18 Mar 2015, 08:18
- Location: West Wales
- Contact:
Re: self starters
I'm not mad keen ob the one way bearing system, it's fine if the bearing is in an oil bath, but anyone with a zenoah spring starter will know the horror of a dry bearing if it's not regularly lubricated...
The MVVS bendix system is simpler to implement and obviously disconnects drive when done, I just need to find the appropriate drive gear.
Get well soon Antonia, hope it's nothing serious.
Ell.
The MVVS bendix system is simpler to implement and obviously disconnects drive when done, I just need to find the appropriate drive gear.
Get well soon Antonia, hope it's nothing serious.
Ell.
Re: self starters
Elliot,
Not sure if you are thinking about a singe gear set, but you may struggle with that. The motor will have to be huge. The commercial ones have about a 50:1 reduction.
I have the clutch bearing on my Z62 starter, greased with the correct grease, and it has been on about 3 years with no problems. (Yet!!)
Your big motor will take some turning over.
BC
Not sure if you are thinking about a singe gear set, but you may struggle with that. The motor will have to be huge. The commercial ones have about a 50:1 reduction.
I have the clutch bearing on my Z62 starter, greased with the correct grease, and it has been on about 3 years with no problems. (Yet!!)
Your big motor will take some turning over.
BC
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- Posts: 335
- Joined: 18 Mar 2015, 08:18
- Location: West Wales
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Re: self starters
Barry, it's quite a pokey starter, I've bought one for a 50cc scooter to make a starter for a DLE 55 or MVVS 58 - whichever looks most useful at the time.
I'll attach a couple of pictures so you can see what I'm on about, much, much simpler than the EME system (essentially a FEMA copy).
I'll attach a couple of pictures so you can see what I'm on about, much, much simpler than the EME system (essentially a FEMA copy).
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- Posts: 335
- Joined: 18 Mar 2015, 08:18
- Location: West Wales
- Contact:
Re: self starters
the starter itself has a couple of sets of reduction gears I think, then the reduction onto the big prop driver.
Unfortunately, the driven gear onto which the bendix engages seems to house an integral clutch mechanism on modern scooters, not like in my day, ooh my back, have you seen my teeth, I only put down a minute ago etc. etc.
Ell
Unfortunately, the driven gear onto which the bendix engages seems to house an integral clutch mechanism on modern scooters, not like in my day, ooh my back, have you seen my teeth, I only put down a minute ago etc. etc.
Ell
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- Posts: 335
- Joined: 18 Mar 2015, 08:18
- Location: West Wales
- Contact:
Re: self starters
the starter arrived today, it looks perfect, just need to source that starter ring...
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- Posts: 36
- Joined: 31 Jan 2020, 16:17
- Location: East Yorkshire
Re: self starters
Elliot , I have two models fitted with Fiem starters , my two thirds scale WW1 Hanriot (400 watt ) and my two thirds Scheibe SF33 motor glider 250 watt
I made the ring from 1/4" by 6" bar dural 6082 T6 , cutting the teeth on my milling machine with a rotary table using an involute mod 1.75 mm no 2 cutter. The teeth seem to be standing up to the starts ok . Battery is from Stephans Lipo Shop Quantum SLS 4S 65C 5000MA with XT90 CONNECTOR
i have a 90 amp automotive relay operated via a microswitch on a d shaped servodisc/servo plus a manual switch breaking the coil circuit
Need to be careful , lot of power available , KEEP BEHIND THE PROP WHEN BATTERY CONNECTED
The SF33 has a King 190ccflat twin , 16 teeth on the Fiem and 90 teeth on the motor gear, hope the above helps
I made the ring from 1/4" by 6" bar dural 6082 T6 , cutting the teeth on my milling machine with a rotary table using an involute mod 1.75 mm no 2 cutter. The teeth seem to be standing up to the starts ok . Battery is from Stephans Lipo Shop Quantum SLS 4S 65C 5000MA with XT90 CONNECTOR
i have a 90 amp automotive relay operated via a microswitch on a d shaped servodisc/servo plus a manual switch breaking the coil circuit
Need to be careful , lot of power available , KEEP BEHIND THE PROP WHEN BATTERY CONNECTED
The SF33 has a King 190ccflat twin , 16 teeth on the Fiem and 90 teeth on the motor gear, hope the above helps