By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by CML

OS MAX 46 FX - what are they like?

All Topics | Latest Posts

Search for:  in Thread Title in  
Jonathan M17/06/2019 07:40:36
avatar
670 forum posts
275 photos

I've just been given a used OS MAX 46 FX, don't know how old but it looks pretty clean and feels nice and bouncy turning over by hand. What are they like?

Nigel R17/06/2019 08:01:22
avatar
3168 forum posts
486 photos

Not used the FX series.

I have run the predecessor SF in 40 and 60 size quite a bit. Very nice engines. Still have some, although currently not in use.

I'm sure someone will mention the OS cylinder peeling problem soon. Never experienced it myself.

Fatscoleymo17/06/2019 08:02:26
avatar
249 forum posts
86 photos

Powerful engines, but they suffered from the coating on the liner 'de-laminating'.

Worth pulling it apart to check.

Fats

Jonathan M17/06/2019 09:48:12
avatar
670 forum posts
275 photos

Thx. I'll check the plug and run it up on the bench. If it struggles I'll open it up for a look-see. Assume Just Engines can supply liner if needed..?

Jon - Laser Engines17/06/2019 09:57:04
4896 forum posts
186 photos

You can use the ASP piston and liner in those i believe. They tend to last longer than the supposedly better quality os ones.

will -017/06/2019 10:46:49
avatar
582 forum posts
19 photos

Personally, if it looks clean and you can't see an obvious problem through the exhaust port, i'd run it first and only take apart if there's an actual problem.

Jon - Laser Engines17/06/2019 12:31:19
4896 forum posts
186 photos
Posted by will -0 on 17/06/2019 10:46:49:

Personally, if it looks clean and you can't see an obvious problem through the exhaust port, i'd run it first and only take apart if there's an actual problem.

In general I would inspect first because if there is a problem you risk doing more damage.

That said, if the liner and piston are damaged now they are already scrap so i guess it makes little difference in this case

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of RCM&E? Use our magazine locator link to find your nearest stockist!

Find RCM&E! 

Support Our Partners
Cambridge Gliding Club
CML
electricwingman 2017
Wings & Wheels 2019
Gliders Distribution
Pepe Aircraft
Slec
Sarik
Advertise With Us
Do you use a throttle kill switch?
Q: This refers to electric-powered models but do you use a throttle kill switch?

 Yes
 No
 Sometimes
 Rarely

Latest Reviews
Digital Back Issues

RCM&E Digital Back Issues

Contact us

Contact us