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Search: Posts Made By: Detlef Kunkel
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02-10-2024, 08:43 AM
Replies: 5,151
Views: 1,346,327
Posted By Detlef Kunkel

yes :-)

yes :-)
02-10-2024, 08:34 AM
Replies: 5,151
Views: 1,346,327
Posted By Detlef Kunkel

I will ask him when I see him :-) When you...

I will ask him when I see him :-)

When you have oil / liquid grease in the gearbox ( which I prefer by far) and use an electric fuel pump, there i s no need for the piston any more.

Simply drop...
01-21-2024, 10:40 PM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

Nice movement- and nice moment :-) 6...

Nice movement- and nice moment :-)

6 years....I cannot believe it
01-03-2024, 01:06 AM
Replies: 5,151
Views: 1,346,327
Posted By Detlef Kunkel

To remove the air pump cylinder is - in my...

To remove the air pump cylinder is - in my opinion- the only way to fumble the conrod on the excenter seat of the planetary gear.
You do that holding the tiny piston and hope to have a good day :-)...
12-31-2023, 04:36 AM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

Hi Mitch, the Bear has received some reworks...

Hi Mitch,
the Bear has received some reworks and improvements.

First of all, the repaired and highly modified 300, then I am still working on a new (lighter) elevator. Need to move the CG more...
12-28-2023, 06:44 AM
Replies: 5,151
Views: 1,346,327
Posted By Detlef Kunkel

Hi Jake, Yes I did replace bearings of...

Hi Jake,

Yes I did replace bearings of Mokis. No rocket science. Just heaten the case to about 170 ° and they fall out or just need a very small push.

To re-insert new bearings, I go only to...
12-27-2023, 11:51 PM
Replies: 5,151
Views: 1,346,327
Posted By Detlef Kunkel

Jake, now I am confused. Did you or did you...

Jake, now I am confused.

Did you or did you not remove the gears and cam drum?
12-26-2023, 11:39 PM
Replies: 5,151
Views: 1,346,327
Posted By Detlef Kunkel

Jake, good example that you show here. Oil...

Jake,

good example that you show here. Oil goes everywhere- and does its job.

With grease, you cannot be so sure.

I had more than one squeeking engine here with dry cams (!)


After a...
11-11-2023, 01:01 AM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

Hi Mitch, any news of the mighty Bearcat?...

Hi Mitch,


any news of the mighty Bearcat?

In between it is getting pretty cold here.
10-13-2023, 02:54 AM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

The Bearcat is almost as neutral as a P-51. ...

The Bearcat is almost as neutral as a P-51.

But (just my personal preference) I dislike the instable situation between push and pull on approach, so I also select a little downtrim with flaps (...
10-11-2023, 10:56 PM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

Mitch, I dont have a stock of spare parts. ...

Mitch,

I dont have a stock of spare parts.

The pushrod- problem is sorted out when you frequently lube your ex-valves, and normally these engine run for many hours without significant wear.
10-05-2023, 09:54 PM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

Nice work, absolutely. Looking forward to...

Nice work, absolutely.

Looking forward to see her taxi by and the in flight. What a beauty :-)

------

in between,


I ordered a list of spare parts for my 300 and that of a friend, who is...
10-04-2023, 09:47 PM
Replies: 5,151
Views: 1,346,327
Posted By Detlef Kunkel

Jugman, dont worry too much. The 150...

Jugman,

dont worry too much.

The 150 and 180 are pretty much identical except piston diameter.

Most of the 180 parts will fit in the 150, and normally, you dont need much spare parts if you...
10-01-2023, 02:54 AM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

BTW does anybody know if Rob, the starter of this...

BTW does anybody know if Rob, the starter of this thread, is still reading here and /or fly his Bearcat?
10-01-2023, 02:53 AM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

Mitch, don't be too sure. :-) It would be...

Mitch, don't be too sure. :-)

It would be great to find out one day, wingtip to wingtip



Btw did you ever run your 300?
Forum: Gas Engines
09-30-2023, 09:05 PM
Replies: 53
Views: 14,910
Posted By Detlef Kunkel

Hi Vicky, of course you can fly a 400 ml tank. ...

Hi Vicky,
of course you can fly a 400 ml tank.

We have a 750 ml in the Chippie and after 7-8 minutes it is half empty.

Depending on your throttle stick, I guess you can fly 10 minutes maximum...
09-30-2023, 03:40 AM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

while I'm slaving away, my lazy 300 is taking a...

while I'm slaving away, my lazy 300 is taking a wellness vacation.



After about 75-80 flights on the BC I noticed a fair amount of play in the crankshaft. You could even hear a new sound that...
09-30-2023, 03:26 AM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

here we go. Very thin profile. High twist. ...

here we go.

Very thin profile. High twist.

Would be interesting how it performs ccompared to the really good SL / BC prop.

I can monitore rpm and airspeed, so there will be no secrets.
09-30-2023, 02:36 AM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

The SL is fine, as they use the Bearcat style...

The SL is fine, as they use the Bearcat style correct shaped and twisted blades that I made for Sven in order for him to produce them.

Google Varioprop, they make extremely modern thin profiled...
09-30-2023, 02:32 AM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

Cantīt afford any more extra weight. ...

Cantīt afford any more extra weight.

Whatever I add, must be removed somewhere else. No kidding.

Thats why I make a new lighter elevator, maybe rudder as well
09-29-2023, 07:00 AM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

[QUOTE=mitchilito;12784494]I'm in a bit of a...

[QUOTE=mitchilito;12784494]I'm in a bit of a delay trying to work out some radio issues. In the mean time I'm working on the scale exhaust pipes. These are strictly decorative and DO NOT flow...
09-26-2023, 07:45 AM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

You`re welcome my friend :-) Good luck with...

You`re welcome my friend :-)

Good luck with yours :-)



PS this weekend I hope to check the sick 300
09-25-2023, 09:07 AM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

Mitch, Elevator is at the deepest spot (...

Mitch,

Elevator is at the deepest spot ( trim tab) 1" up and 1 " down. depending on your taste , expo function and - most important- point of your C_G.

With 200 mm, this is MUCH throw. with...
09-25-2023, 08:51 AM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

Thank you guys. :-) Final weight with fuel...

Thank you guys. :-)

Final weight with fuel to drip out when rolling is 24,92 kg, on a certified calibrated official scale.

Not with the scale sliding canopy cockpit, but with a simplified...
09-24-2023, 09:45 AM
Replies: 512
Views: 139,190
Posted By Detlef Kunkel

sorry double post ( again)

sorry double post ( again)
Showing results 1 to 25 of 258
 


 
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