Hi
Just wondering if someone can identify this engine, recommend a prop and the range of rpms to expect from it.
Thanks
Asim

From the looks, it is definately a PAW, as these engines all have a smooth looking casting.
Without much for size comparison, I'd say it's the 49 or 60TBR



For prop sizes:

http://www.eifflaender.com/techdets.htm

Is there a way to tell them apart? Their weight also seems to be close together (based on the link above). This engine weighs at 511 grams. Did they make 49 in green head too or was made only for 60?
Thanks for the quick response.

The displacement should be stamped on the rear cover plate martin

Would have been nice , but no luck. There is nothing written anywhere on this engine including the cover plate.

The PAW engine has Varijet carburator and the coolingfins are green, it is a 60 size engine also a PAW 60 TBR-R/C while the engine with darkbrown cooling fins are a 40 TBR-R/C size engine. Both 40, 49 and 60 has Varijet carburator.

All anodising in coolingfins has been withdrawn as of 1st June 2007..[]

You need 16/8, 15/6, 12/6 propeller for your PAW 60 TBR-R/C , read instruction for Varijet carburator: http://www.rcuniverse.com/forum/fb.asp?m=5991650

My PAW .60 has a green head. My PAW .40 has a black head. Not sure what color the PAW .49 head is? Earlier and recent models have no color on the heads. Jack

Thanks guys, really appreciate the help. I'll give it a shot with the recommended props. My first shot at diesel engines....excited and scarred to pickup another addiction,,glow, gas, electrics are bad enough...

BTW, what condition is it in. It is very important that a diesel gets a proper break-in.

George

Do you treat the engine nicely and properly, the engine will last many years. PAW engines is easy to start, 2-3 flip the propeller are enough to the engine will start if the setting and the routine is correct.

It is common beginner mistakes:
Remember to flip the engine faster than you do with the glow- and gas engine, it is to get enough compression heat to ignite fuel mixture.

I'd suggest going to this site and reading about the breaking in and running of PAW diesels:

[link=http://www3.telus.net/dieselcombat/about_diesels.htm]operating diesels[/link]

Will do, thanks for all the help guys. Looking forward to this weekend.

I REALLY enjoy that site and have been recommending it to folks since before they moved the site to its present location. If you haven't been there, do yourself a favor and read it. The site also has good information on fuels and a bunch of other interesting stuff.

I just re-read it (again). I guess one of the attractions for me is the neat pics of the old diesels (I have the Webra MK-1 and OT). The reference at the last of the break-in process to the FROG .21 brings back memories. I bought one in 1960 just before going into the NAVY and installed in a Flite Streak, Jr. (interestingly, replacing the Webra Mk-1). That FROG 21 was WAY too much weight and power for that Flite Streak Jr. It would only go round-and-round...fast. Rather than try to re-balance, I rebiult the front end of the plane and installed a Fox .15X. Actually, the Webra was a bit too much weight also, but tolerable.

George