140 4-cycle = to what gas engine - RCCanada - Canada Radio Controlled Hobby Forum
RCCanada - Canada's Radio Control Hobby Forum
General RC Aircraft Discussion Discuss anything RC related

Reply
 
Thread Tools Display Modes
Old 05-11-2020, 11:17 PM   #1
jkrash
RCC Apprentice
 
jkrash's Avatar
 
I am: john k
Join Date: Mar 2011
Location: toronto, ont
Radio of choice:
futaba
# of RCs: 34

Feedback: 4 / 100%
Posts: 32
Total Props: 0
140 4-cycle = to what gas engine


       Remove this ad - become a site supporter!
Hi all I've been starring at my kmp beaver with floats for too long I need to get her going. The manual calls for a max 160 2-cycle or a 140 4-cycle engine but I want to fit it with a gas 2 stroke that I'm more familiar with tuning .What would the conversion be from the 140 4-cycle or (160 2-cycle) be to a gas engine size (cc's) be? Thanks john
jkrash is offline   Quick reply to this message.

Sponsored Links - Subscribe to remove this ad.
Old 05-11-2020, 11:25 PM   #2
JoeT
RCC Pro Contributor
 
JoeT's Avatar
 
I am: JoeT
Join Date: Mar 2004
Location: Maple, Ontario, Canada
Radio of choice:
Was a Futabaist, Now a Horusist (is that a word)?
# of RCs: 5

Feedback: 15 / 100%
Posts: 1,613
Total Props: 20
Re: 140 4-cycle = to what gas engine

120 glow = 20cc ish gas.
140 is close enough to 150 which equals 30 or 35cc gas.

Just found the details on the kmp beaver, 96" wingspan and 16 lbs. You can use a 35cc gas motor on that or if the cowling has space you can put in a 40 twin.

Rcgf makes a really nice 30 cc twin that'll fly that with ample power.

Anyways, hope this helps.
__________________
Burlington RCFC / 400 Club
Join RC Antics on Facebook https://www.facebook.com/groups/rcantics/
My Skywing Build Log: https://www.flyinggiants.com/forums/member.php?u=69479
JoeT is offline   Quick reply to this message.
Old 05-11-2020, 11:59 PM   #3
jkrash
RCC Apprentice
 
jkrash's Avatar
 
I am: john k
Join Date: Mar 2011
Location: toronto, ont
Radio of choice:
futaba
# of RCs: 34

Feedback: 4 / 100%
Posts: 32
Total Props: 0
Thanks, I guess the twins will give more torque and better sound? The main reason I found a 50cc motor new for a descent deal was Hoping that would work and save me some cash but wasn't sure if it would tear the poor thing apart
jkrash is offline   Quick reply to this message.
 
Old 05-12-2020, 06:05 AM   #4
rome
RCC Expert Contributor
 
I am: Romeo R
Join Date: Dec 2004
Location: toronto
Radio of choice:
Futaba/Taranis
# of RCs: 10

Feedback: 58 / 100%
Posts: 851
Total Props: 5
Re: 140 4-cycle = to what gas engine

I got one last year, at RCC. it came with a Fuji 26cc.

It looks really nice, but just curious about the engine. I have a 35cc stand by just in case I have to swap it.
__________________
maac #38176
sport flyer
rome is offline   Quick reply to this message.
Old 05-12-2020, 08:51 AM   #5
jkrash
RCC Apprentice
 
jkrash's Avatar
 
I am: john k
Join Date: Mar 2011
Location: toronto, ont
Radio of choice:
futaba
# of RCs: 34

Feedback: 4 / 100%
Posts: 32
Total Props: 0
Is the 35cc a twin?
jkrash is offline   Quick reply to this message.
Old 05-12-2020, 10:38 AM   #6
JoeT
RCC Pro Contributor
 
JoeT's Avatar
 
I am: JoeT
Join Date: Mar 2004
Location: Maple, Ontario, Canada
Radio of choice:
Was a Futabaist, Now a Horusist (is that a word)?
# of RCs: 5

Feedback: 15 / 100%
Posts: 1,613
Total Props: 20
Re: 140 4-cycle = to what gas engine

Quote:
Originally Posted by jkrash View Post
Is the 35cc a twin?
Unfortunately not.. Most of the 30's / 35's / 36's are single cylinder engines. The only small twin I've seen (Gas) is the RCGF30 or DLE40.

https://www.ibcinyourc.com/store.php...tinger_version
https://youtu.be/HkPqb7jT4HM
__________________
Burlington RCFC / 400 Club
Join RC Antics on Facebook https://www.facebook.com/groups/rcantics/
My Skywing Build Log: https://www.flyinggiants.com/forums/member.php?u=69479
JoeT is offline   Quick reply to this message.
Old 05-12-2020, 11:37 AM   #7
Dennis Pedersen
RCC Master Contributor
 
I am: Dennis P
Join Date: Dec 2007
Location: Rycroft AB
Radio of choice:
JR XG11 / Mikado V Control

Feedback: 37 / 100%
Posts: 1,208
Total Props: 14
Re: 140 4-cycle = to what gas engine

I run one of these 40 twins in an Extreme flight 78" Extra and it has been a great engine. I think you are really going well out the top end power wise for your Beaver with the 40 but throttle management works. The 30 twin would be more in line but more importantly will the twins fit within the cowl. It would totally destroy the looks of the Beaver if you have to start chopping up the cowl. I think a nice 30 to max 35 single hidden inside the cowl nicely would be ideal.

https://www.valleyviewrc.com/vvrc-40cc-classic

http://www.greathobbies.com/producti...d_id=DLEDL30V2
__________________
Flyer of all, master of none
Rycroft Wings & Blades MAAC Club
Dennis Pedersen is offline   Quick reply to this message.
Old 05-12-2020, 10:39 PM   #8
jkrash
RCC Apprentice
 
jkrash's Avatar
 
I am: john k
Join Date: Mar 2011
Location: toronto, ont
Radio of choice:
futaba
# of RCs: 34

Feedback: 4 / 100%
Posts: 32
Total Props: 0
Thanks for the link denis I'll have to measure up everything but I think 30 maybe 35 single simple as easy. While I was on the link I did find a nice saito 33cc 3 cyl gas wow! Lol
jkrash is offline   Quick reply to this message.
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the RCCanada - Canada Radio Controlled Hobby Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Member names may only be composed of alpha-numeric characters. (A-Z and 0-9)

!!ATTENTION ADVERTISERS!! If you intend on advertising anything on this forum, whatsoever, you are required to first contact us here . Additionally, we do NOT allow BUSINESS NAMES unless you are an Authorized Vendor. If you own a business, and want to do sales on this site via posting or private message, you will need to follow the rules. Shops, Stores, Distributors, Group Buys without being authorized will see your account terminated.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Radio of choice?
Which radio is your current favorite to use?
Number of RC Vehicles?
How many boats, cars, planes do you own?

Log-in



Currently Active Users Viewing This Thread: 2 (0 members and 2 guests)
 
vBulletin Message

Thread Tools
Display Modes

Forum Jump


All times are GMT -5. The time now is 03:44 AM.


vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.