I have an old Fox Mk 4 combat special I'd like to use again, I used to use Tipan or Rev Up props, what are good props now, is APC ok?
Thanks

Thanks Phil that's all I needed to know.

8x6 Taipan works well.The cuff on the back of the prop made setting the needle a challange.9x6 black Masterairscrew cut down to 8 1/4 worked well .These props are much more rugged than APC's .

Brad

I did'nt know Taipan still made props if so where do I get them? Also I use a remote needle and I would never use a black Masterairscrew on a .36 combat engine.

Melvin Schuette still lists Taipans --

Taipan Props
7114 Taipan 10 X 4 Prop $3.10
7116 Taipan 10 X 6 Prop $3.10
7174 Taipan 7 X 4 Prop (Black) $2.30
7175 Taipan 7 X 4 Prop (white) $2.30
7177 Taipan 7 X 6 Prop (White) $2.30
7184 Taipan 8 X 4 Prop (Black) $2.50
7194 Taipan 9 X 4 Prop (Black) $2.70
7196 Taipan 9 X 6 Prop (Black) $2.70

at:

http://www.mbsmodelsupply.com

           Recently, I was at the field with a bunch of club members who indeed were running some of the Fox mk series engines. I myself was using a mkIII. The other was using a mk IV. While I was getting set up the other fellow had his wing already in the air with the mkIV singing away. He was using a Taipan 8x6 due to that being the prop of choice some time back. I myself was using a black Tornado 8x8. He was doing some maneuvers then while returning back to level flight you heard this loud funny noise then the engine went into a screaming high rev then quit. No one realized what happened until it landed when we noticed there was only one blade on the prop. This particular prop was a gray colored Taipan. We do have some in black though. Once the engine went into the higher revs with one blade it shook so much the fuel line and spraybar vibrated off and out of the case which was probably a good thing. I don't know if this was a fluke or just the reality that this older prop couldn't take this engine. We both have switched to using APC 8x8's and I just read a similar post over on Stuka Stunt. I would think that a newer style prop of the size required would be the best choice at least for safety reasons.  Ken

I have been trying the wood master airscrew 10x6 as a replacement for my last 2 TF power prop 10X6 and find they are at least very close to the TFs with the little bit of testing the rain has allowed.

This is encouraging for the rare occasion that I might fly a combat plane with a ST.35 and Fox MKI CBS in that I can use the 9x6 master in wood to replace my last few 9X6 rev ups and pp.
I will leave the 9X6-6.5 Aldrich props in the box!

The 8X8 vs 9X6.......never did understand the use of the 8X8s....The airplane will slow down in turns! The engine might not but the airplane will! The slowing down just never seemed worth the 2-3mph gain in level flight from the 8X8.
The extra 1/2 inch per side might just reach out and get an extra cut as well!
Try it ---you will like it.

I do need to try the new power point props that Phil suggest.

Phil
Can you answer my problem in the following?

I stopped flying the year that the shiny case simi schnurles were used at the Nats so dont really know what the first 6 bolt back plate engines were called, I assume MKI. I do have 3 of these and the main thing I know is after about 10 runs the front of the crank sheared off the one I did try. And it made more power than the G-21.

Will the later cranks fit? Kind of scare to run the other 2 until something can be done with the cranks.


Thanks
David

Only a hundred or so Fox Mk 7s made, that's interesting. Anybody have an idea how many Wiley 36s were made? Just curious, I have one of each.

Chad Hill