Cox Engines Forum
You are not logged in! Please login or register.

Logged in members see NO ADVERTISEMENTS!

K&B Aero .18 - Page 2 Cox_ba12

K&B Aero .18 - Page 2 Pixel

Log in

I forgot my password


Display results as :

Rechercher Advanced Search

Latest topics
» music vids.. some of your favorites
by fredvon4 Today at 6:23 pm

» Who want´s it ?.
by roddie Today at 6:20 pm

» Wen Mac Lotus - dusty but not ran
by Marleysky Today at 3:17 pm

» [solved]most Efficent Glowhead Clip for Norvel Engine
by duaneh Today at 1:28 pm

» Uncle Wayne
by ChaseBanner Today at 9:35 am

» The Breezy Hill Flyer's "Black Fly-Day" Fun-Fly
by getback Today at 8:58 am

» Xmas wish list
by fredvon4 Today at 7:38 am

» 1/2A Streaker - New Production Kits!
by balogh Today at 7:23 am

» BJMR Twin Lizzie
by fredvon4 Yesterday at 7:17 pm

» Dakota Done
by fredvon4 Yesterday at 7:01 pm

» glow fuel Experiment with water contaminated nitro fuel
by ChaseBanner Yesterday at 5:41 pm

» Cox engines
by fredvon4 Yesterday at 2:40 pm

Cox Engine of The Month

".049 Babe Bee "in action""

CEF Traveling Engine

Win This Engine!
Forum Store
CEF Ear Savers

K&B Aero .18 - Page 2 Empty

K&B Aero .18

Page 2 of 2 Previous  1, 2

Go down

K&B Aero .18 - Page 2 Empty Re: K&B Aero .18

Post  Surfer_kris Fri Feb 01, 2019 3:51 am

I have one of the K&B .18 aero RC engines lying somewhere, it was a little bit of a disappointment in terms of power. I got it working alright but I haven't flown anything with it.

These engines are a remake of a Fuji/Toki engine, which in turn where a cheaper version of a HPI engine (as I have understood it). The HPI engine was true ABC, with a bushed aluminium conrod etc. The Fuji and K&B are instead ABN with a brass/bronze rod, similar to the Fuji .05 engine. The .18 and the .05 also share a common carb (!) but the bore in the barrel is smaller on the .05 engine. On the .18 engine there is a restriction below the throttel barrel in the carb (which can easily be removed), I don't know anything about the size of the CL ventury though.

I had a thread on RCU at the time: K&B .18 thread

In short, the engine didn't run well on the supplied exhaust (same as ASP .15 by the looks of it) but it will run fine with a less restrictive exhaust and smallish props. On a 7x4 prop it would then match a stock ASP .15XLS engine (i.e. about 20krpm). So if you think of a the K&B .18 as a regular .15 engine, it will be fine. It is only slightly heavier than a typical .15BB engine, here are some numbers (engine only, and with RC carbs) all providing about the same power:

K&B .18 Aero RC: 176g
MDS .18 RC: 172g
ASP .15 XLS: 168g
OS .15 FP (the LA is similar too): 140g

K&B Aero .18 - Page 2 Img_0610

K&B Aero .18 - Page 2 Img_7611
Diamond Member
Diamond Member

Posts : 1814
Join date : 2010-11-20
Location : Sweden

Back to top Go down

K&B Aero .18 - Page 2 Empty Re: K&B Aero .18

Post  1/2A Nut Fri Feb 01, 2019 8:55 am

1/2A Nut
1/2A Nut
Top Poster
Top Poster

2019 Supporter

2021 Supporter

Posts : 3139
Join date : 2013-10-20
Age : 58
Location : Brad in Texas

Back to top Go down

K&B Aero .18 - Page 2 Empty Re: K&B Aero .18

Post  944_Jim Sun Feb 10, 2019 8:14 pm

Well Gents,

I want to thank each of this thread's respondents for their frank and valuable input.

After much research, and review, an engine "pecking order" selection was made.

I really had my heart set on the Norvel .15 Big Mig, and would have settled for an AME. However, they are a just a bit wider and heavier than the Medallion. Cost put them out of reach for an engine that would have had zero warranty.

So, in the end, cost and low weight beat out overall power.

A Cox Medallion .15 was "won" on eBay moments ago. It popped up as a notification with only 15 minutes remaining...and no bidders.
I had actually forgotten about it while I researched bigger, heavier, stronger options. The Medallion actually comes in only a little heavier than the engines the kit was designed around, so I expect to be able to build lighter. I hope no additional weight will be required-at either end of the bird!

I expect to do full bench checks on it after it arrives.

Since the engine was built by "our favorite manufacturer," expect a build journal featured here on CEF.
Diamond Member
Diamond Member

2019 Supporter

2020 Supporter

2021 Supporter

Posts : 1306
Join date : 2017-02-08
Age : 56
Location : NE MS

Back to top Go down

K&B Aero .18 - Page 2 Empty Re: K&B Aero .18

Post  Cribbs74 Sun Feb 10, 2019 8:29 pm

Glad you were able to come up with a good compromise. I think it will do the job, looking forward to the build.


2019 Supporter

2020 Supporter

2021 Supporter

Posts : 11729
Join date : 2011-10-24
Age : 47
Location : Tuttle, OK

Back to top Go down

K&B Aero .18 - Page 2 Empty Re: K&B Aero .18

Post  Sponsored content

Sponsored content

Back to top Go down

Page 2 of 2 Previous  1, 2

Back to top

Permissions in this forum:
You cannot reply to topics in this forum