Quick question On 231 v 252 with rocket conversion

[Austintatious]

Hey everyone... i cant seem to figure out what the difference between a 231 rocket vs a 252 rocket is.   Can anyone help?

[40-0Flight]

Read This

 

Not being smart... Read the 1970's and 1980's.   It does a good job of pointing out the differences between the 3 models, and is a very short read.

[kortopates]

The 252 airframes began in '86. So it will have the 28V system, electric infinitely adjustable cowl flaps and all the add ons where standard on the 252's except for second alternator and choice of autopilot with the KFC-150 the more expensive with option to add KS197B VNAV which was rare. Standard add-ons that where options in the earlier 231 includes built-in O2, electric standby vacuum, speed brakes, hot prop, and  folding rear seats (which started in '85?). The only real non-factory upgrade was the Monroy extended tanks. 

Rocket Engineering increased the max takeoff weight without any airframe changes, just part of their STC Later, Mooney increased the max takeoff weight by 230lbs in the follow on Encore model with its TSIO-360-SB 220 HP engine with some limited airframe changes including control surface balance weight changes to presumably to keep the same flutter margins and double puck brakes that last longer; these can be retrofitted to the 252's only to get the larger max gross weight.

Edited March 9, 2019 by kortopates

[kortopates]

6 minutes ago, 40-0Flight said:

Read This

 

Not being smart... Read the 1970's and 1980's.   It does a good job of pointing out the differences between the 3 models, and is a very short read.

Hadn't seen that, but it has a few errors starting with their being 3 models (231, 252 and Encore with 3 engines) before introducing the Rocket engineering mods to the 231 and 252.

[peevee]

Rocket redoes the cowl flaps so I'd guess you lose the electric adjustability. All things equal I'd want the 252, 2x so if it's fiki

[Cyril Gibb]

14 hours ago, 40-0Flight said:

Read This

 

Not being smart... Read the 1970's and 1980's.   It does a good job of pointing out the differences between the 3 models, and is a very short read.

I read the summary.  What caught my attention was noise reduction mentioned twice.  I’ve failed to improve the sound levels despite stripping the interior and using sound proofing.  Although the improvement was measurable, it wasn’t enough to be perceptible.

Does anyone know specifically what was done? 

[Guest]

They do tend to be louder than many other airplanes, even the turbo can’t calm the noise.

Clarence