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112 Hot Shot

Re: 112 Hot Shot

I stand corrected it was Jim - I should have known Scott wouldn't comment on anything.:D
 
Re: 112 Hot Shot

klevins said:
I'm getting more interested in this modification. I have a mid-time IO360 with about 840 hours. What would the likely total cost be for installation including the three blade Hartzell?
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Carl can fill you in on current Hot Shot prices, but many of us have bolted on the 3-blade Top Prop. I think it's currently around $11K?
 
Re: 112 Hot Shot

I live in AZ. I also use the hot shot turbo on take off. KFFZ is 1300'+ elevation We always take off on red line turbo. I monitor the manual wastegate during take off and reduce if necessary. I've taken off full fuel, 90 less than gross weight in 100 degrees +. CharLee climbs 300' - 500' per minute but she climbs for sure. I would never NOT use the turbo during takeoff. I've posted this fact on here before. The 112 is lame at best without the turbo. I've loaded my CharLee with salt bags to achieve max weight to see how she performs. The take off roll is longer than a Cessna 182 for sure. I estimate about 2100' of runway no matter really whether I run her up to full throttle before I release the brakes or not. It just takes my CharLee about 2100 ' of runway + to achieve sufficient safe lift at or near max weight. I use more or less turbo depending on temperature. Crosswind is also a big deal on take off I've noticed. It significantly increases our roll. I don't have the vortex generators installed yet and the guys I bought the plane from removed the flap gap seals...don't know why!? If anybody has feedback on the flap gap seals let me know...I want to install them once again along with the VG's. I have ran her over red line when cruising or when climbing. She flies like a dream...no problem at 12,000 ' plus. I usually cruise under 12,000 @ 140-145 knots. Everywhere I go, people recognize and appreciate the COMMANDER. What the heck...why didn't they sell more planes?? I get the 112 gross weight issue but the turbo and the 114 takes care of that downfall.
 
Re: 112 Hot Shot

I started to put a 112 system together for someone a while back, but they fell on hard times and had to cancel their order. If anyone is interested I can give a pretty good deal on it. Please call so we don't have to go back and forth on the web board.

Merry Christmas,
 
Re: 112 Hot Shot

I will be joining the 114 Hot Shot ranks in Jan....can't wait.
 
Re: 112 Hot Shot

Pete with your strip being 5,900 ft elevation you will get a monster benefit from the Hot Shot. Always full power even in the summer. Remember the lifting surfaces are not normalized but with extra speed on take off with full power you will be amazed. The higher I go the faster the vertical climb opposite of non turbo planes. At 15,000 and decide I want 17,500 she climbs like a raped ape.
 
Re: 112 Hot Shot

Brian...how does your plane do at 17,500? I have wondered about the 'book' service ceiling reading only 16,000'. I haven't taken my 112 HS above 13,000 yet....
 
Re: 112 Hot Shot

Rumor has it that Robin took his Hot Shot higher than 16K - much higher :)
 
Re: 112 Hot Shot

A few months ago (hot weather) I had my 112TC @ 11500 for an extended time coming home from Denver and it flew great. https://flightaware.com/live/flight/N4565W/history/20140830/2043Z/KBJC/KADM/tracklog
We flew it at 2250 X 28. got great economy. If i remember right it was about 13 GPH . That Sat we flew an up and back ground track of 1485 miles. I take off @ 40" and 2500 and climb to altitude that way. I also do the run up to about 32" and then let it roll as the turbo kicks it up to 40. I keep it pulled back because it will over boost past the red at my 385 alt airport. Sat after Thanksgiving I hopped in it to take the Grand Daughter home.
KTXK to KLLQ. 113 NM We had a 22 kt tail wind and I was flying @ 7500 ft. I was in a hurry and had it at 75% power I think it was flying @ 2250 @ 35" .. Most of the time I cruise at what the book calls 65% power.
On this leg of the flight I had a 165-170 Kt ground speed on the GPS. When I did a cruise decent, just pulled back to 32" @ 300 to 400 FPM decent, It picked up to 178-181 Kt ground speed. I love the performance of these Turbo Commanders. This is the first one I've owned and I will probably always have one with a turbo.
 
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Re: 112 Hot Shot

Thanks for sharing Adger....I haven't gotten 165-170 gs yet but close. It seems I'm always flying 'into the wind', or 'not high enough'. My wife gets cold above 10,000' ha ha. Well we are from AZ.

Glenn, yeah. I get it. :-) I'm new here so I was wondering last night if Robin was still around. You answered my question.
 
Re: 112 Hot Shot

The story Robin told me was that he left the paperwork max altitude at 16K because that was from the original type certificate. The turbo is large enough that the plane can easily fly much higher than that but the FAA wanted so much additional testing to change that number that he decided to save the money and not to pursue it.
 
Re: 112 Hot Shot

Is service ceiling an operational limit?
 
Re: 112 Hot Shot

davloose said:
Is service ceiling an operational limit?
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"Service ceiling" is a physical limit where rate of climb has decreased to about 100fpm. I don't think there is any legal restriction there. It becomes operational because you're not going to get much higher...

In the context of turbo-charged aircraft the term "Maximum Authorized Altitude" appears in the Limitations Section and the Type Certificate, which makes it the legal limit. Service ceiling would be some value above that, maybe quite a bit higher.

For the 112 HS, the STC paperwork obviously includes such a limitation (i.e. 16000'). What's the max for 114HS?

112TC/TCA is 20000' and 114TC is 25000'.
 
Re: 112 Hot Shot

If I recall correctly, the service ceiling for the 112HS is around FL220.
 
Re: 112 Hot Shot

I sent an email to Carl, haven't heard yet. I have a crack in the Y fitting for the turbo on my 112A. Wondering if, and where, I may be able to get a replacement part?? It's been welded once before by previous owner, don't want to try and repair again if I don;t have to.
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Re: 112 Hot Shot

cschuler123 said:
I sent an email to Carl, haven't heard yet. I have a crack in the Y fitting for the turbo on my 112A. Wondering if, and where, I may be able to get a replacement part?? It's been welded once before by previous owner, don't want to try and repair again if I don;t have to.
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Click to expand...
The only place qualified to weld it is Knisley Welding. This is because they have the jigs as they also create all of the parts for that system. You could contact them for your options.

Regards,
Neal
 
Re: 112 Hot Shot

Thanks so much again guys!
Carl also talked with me today on the crack in the Y. Gotta get her fixed so I can check out that FL220 (someday :-)).
 
Re: 112 Hot Shot

Someone can correct me if this is wrong, but I thought the reason for the Maximum Authorized Altitude on turbos is due to the turbine over-speeding in the thinner air.
 
Re: 112 Hot Shot

Wouldn't think so since turbo has a critical altitude where the turbo starts to loose boost.
I would think that the turbo has reached max RPM at that point and boost starts to drop off above that altitude.

I know in my TCA that the critical altitude is around 16.5k. That is the point where I can no longer maintain full boost at 75%.

See attached where it says not attainable.
 

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