logo
Thread Tools
Old 09-30-2014, 10:36 PM
foam_wonder is offline
Find More Posts by foam_wonder
Flyin' Around
Joined Sep 2014
2 Posts
Question
Engine recommendation needed

Hello, apologies in advance as I'm brand new to the rc engine world.

I need an engine recommendation for a project I'm working on.

The engine needs a good, solid ~6 hp. More is better, of course, but 5~6 would be sufficient.
It needs to have a recoil starter. It cannot use spring start, or be hand propped. The project is not weight critical, so it doesn't have to be the lightest engine out there. Would prefer that it not be tuned to within an inch of its life. Reliability is important. This will not be a racer. Would also prefer not using a battery ignition.

I've been looking at the Zenoah's, specifically the G62, and there is definitely some potential there. However, I've been unable to find a suitable option for the recoil starter.

I've been pointed in the direction of 3W, DLE, and DA engines, and they many of them might work from a power perspective. Sadly, recoil options have been even more elusive w/ these.

Maybe I'm looking in the wrong places. Would sure be grateful for any suggestions.

-thanks.
foam_wonder is offline Find More Posts by foam_wonder
Reply With Quote Quick reply to this message
Sign up now
to remove ads between posts
Old 09-30-2014, 11:23 PM
aussiesteve is offline
Find More Posts by aussiesteve
Clothed Account
aussiesteve's Avatar
Australia, WA, Perth
Joined May 2008
2,325 Posts
Have you spoken directly with 3W ? They have had many starter options available for quite a while that are not necessarily listed on the dealers websites. They may have something suitable that you aren't aware of

Otherwise if weight isn't super critical and it won't be doing high negative G's, consider something like the converted Honda Engines that some have used - I don't know who in your area would do the conversion for you but I am sure someone will chime in and let you know.

Also speak directly to Ralph Cunningham and ask if he can do a Zenoah "Zip start" conversion (I don't have his direct contact details - maybe someone can PM them to you).
aussiesteve is offline Find More Posts by aussiesteve
Reply With Quote Quick reply to this message
Old 10-01-2014, 07:14 AM
AHicks is offline
Find More Posts by AHicks
Registered User
Joined May 2009
1,679 Posts
To get a recoil, you might also consider looking at boat and car applications. Airplanes are about the least likely, from my experience anyway.
AHicks is offline Find More Posts by AHicks
Reply With Quote Quick reply to this message
Old 10-01-2014, 11:10 AM
Texastbird is offline
Find More Posts by Texastbird
Registered User
Texastbird's Avatar
United States, TX, La Porte
Joined Oct 2008
1,256 Posts
How about 'letric start?
http://www.milehighrc.com/EME70CC.html
Texastbird is offline Find More Posts by Texastbird
Reply With Quote Quick reply to this message
Old 10-01-2014, 02:40 PM
Low_Cal is offline
Find More Posts by Low_Cal
Registered User
Low_Cal's Avatar
South Weber, Utah
Joined Dec 2009
2,620 Posts
Could an external electric start be used, like is used with glow powered helicopters? Long start shaft with hex ball on the end.
Low_Cal is offline Find More Posts by Low_Cal
Reply With Quote Quick reply to this message
Old 10-01-2014, 02:46 PM
.com is offline
Find More Posts by .com
Flyin' Around
Joined Aug 2014
43 Posts
Tell us more about your project please.
.com is offline Find More Posts by .com
Reply With Quote Quick reply to this message
Old 10-01-2014, 09:43 PM
foam_wonder is offline
Find More Posts by foam_wonder
Flyin' Around
Joined Sep 2014
2 Posts
Quote:
Originally Posted by .com View Post
Tell us more about your project please.
Fair enough.
I've been thinking about an ultralight, self launching glider, and thus, the recoil start requirement.
Would prefer to avoid having the weight and complexity of batteries for electric start.

My primary engine candidate up to now has been a Radne Raket 120 on a pod.

Recently, I started considering using a pair of smaller, lighter engines.
More design options open up when one doesn't have to account for a large, single prop.
Also, smaller engines tend to require lighter mounts.

The early model Lazair ultralight was able to fly w/ a pair of 5.5 hp Pioneer chainsaw engines.
Granted, the performance wasn't stellar, but it worked. I suspect it would be sufficient for a very lightweight glider.
Not averse to converting chainsaws, but would really prefer using some production RC engines, if suitable ones could be found.

There are some really nice engines from DA, 3W, etc. but the prices seem to spiral up rapidly.
If the cost of a pair exceeds ~1.5X the cost of a Raket 120 (1000 or so), I'd probably just stick with the larger, single engine.

thanks.
foam_wonder is offline Find More Posts by foam_wonder
Reply With Quote Quick reply to this message
Old 10-01-2014, 10:35 PM
scout440 is offline
Find More Posts by scout440
Uber Contributor
Joined Sep 2013
591 Posts
Do not worry about the $$$$....worry about your life !
scout440 is offline Find More Posts by scout440
Reply With Quote Quick reply to this message


Quick Reply
Message:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools