what about o235 lycombing

[Dick Smith]

Re: From days gone by...

A couple of pix of Taylorcrafts powered with Lyc. 0-290. Blue/Yellow was an experimental BC-12D and the Blue/White was an F-19. Really helped on floats. You can see the two different cowling styles.

[Ragwing nut]

Re: what about o235 lycombing

Your probably right...I have the continentals so it was pure opinion....I have a climb prop on both the C90 and the C85 though and they both cruise at about 105mph....Not too bad. I bet the Lycoming would cruise around 115-120 eh?

it would do that easy. we had a '80 F-21, basically a bc12d with a 235 unlike the later models which had quite a few changes. I did a flat out 2 way average one time and was just over 130 on the gps. It was a hoss. My deluxe had the o-200 on it, 100lbs lighter, but unless it had a climb prop on it 74-43, just didn't have the same guts as the lycoming. I put a cruise prop on it and got the cruise up to 115-118, but was sluggish in climb due to the weight (925 empty). Loved the f-21 while we had it. really hated to sell it.

[murphy]

Re: Alsworth connection

I have a F21A with the 118 hp 0235 it climbs at 900-1000 fpm and cruise at 2400 rpm is 110. It is a little slow but gets off the ground good. The prop is a metal Sensenich 72-53 and the aircraft weight is 1100 lbs. It has a full IFR panel and you could buy it for less then installing an engine in yours. Mike

[astjp2]

Re: Alsworth connection

They basically used supercub cowling/mount on a taylorcraft. Custom mount, most were converted in the 70's-80's, The only way to do this swap is with an STC under the current regulations. Do a search on here to find their info. Tim

[Dick Smith]

Re:Alsworth connection

For some background on the topic...type in "Alsworth" in the search window up in the upper right hand of this page. Dick

[cvavon]

Re: what about o235 lycombing

Hay Tim how can I get in touch with one of the Allsworths to find out about 0320 swap

[Dano"T"]

Re: what about o235 lycombing

I have had both and unless you have a climb prop on the continental, it will not keep up with the lycoming, and then you won't have cruise. yes, very expensive to swap over and no nose bowls or top cowl spines available. I have been looking for a f-21 nose bowl for several years with no luck for clip wing project

Your probably right...I have the continentals so it was pure opinion....I have a climb prop on both the C90 and the C85 though and they both cruise at about 105mph....Not too bad. I bet the Lycoming would cruise around 115-120 eh?

[Ragwing nut]

Re: what about o235 lycombing

My opinion is that a C90 or stroked C85 will outperform an O235. Just because there is more HP does not mean more performance....they are kinda heavy. Prices are getting kind of high on the Continentals...but approval would be very difficult for the Lycoming conversion....field approvals are difficult to get these days. Remember that even a new cowl is expensive...and can quickly offset the cost savings of a cheaper motor.....then there's a motor mount exhaust...the list goes on... Your plane looks tough with those awesome bush wheels Chuck...Nice!

I have had both and unless you have a climb prop on the continental, it will not keep up with the lycoming, and then you won't have cruise. yes, very expensive to swap over and no nose bowls or top cowl spines available. I have been looking for a f-21 nose bowl for several years with no luck for clip wing project

[Dano"T"]

Re: what about o235 lycombing

My opinion is that a C90 or stroked C85 will outperform an O235. Just because there is more HP does not mean more performance....they are kinda heavy. Prices are getting kind of high on the Continentals...but approval would be very difficult for the Lycoming conversion....field approvals are difficult to get these days. Remember that even a new cowl is expensive...and can quickly offset the cost savings of a cheaper motor.....then there's a motor mount exhaust...the list goes on... Your plane looks tough with those awesome bush wheels Chuck...Nice!

[cvavon]

Re: what about o235 lycombing

climb like a home sick angle

[astjp2]

Re: what about o235 lycombing

Dont mess with the 235, just do a 320, same size similar weight and 35 more horsepower with a good parts availability. The Allsworths have done several of these conversions. Tim

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What will it take to put a 0235 lycombing on my bl 65 as my plane is built under type certificate 700 witch is the lycombing poward B model and if you go to later F models they used the 0235 also and there half the price of continentals. What is the best way to proceed to make this a legal install

[astjp2]

Re: what about o235 lycombing

They already have one, its the IO240 which is an IO360 cylinders on what is similar to an O-200 case

i think the real trick is finding out how to get cont 0240 cylinders on the 0200 case....just for grins any chance a piper cub etc motor mount fits our planes?



ps nothing wrong with ground cranks...i have set up a few race motors that had very strict rules with the minimum bearing size = less drag per rpm......then you set up the grinder so that you only take off on the inside and cheating in a bit more stroke by moving the new centerline just a bit

[tim]

Re: what about o235 lycombing

maybe what we need to focus on is an stc that converts the b to an f model and then we run 360's




i like the don swords idea best though

i hear that hey has any one looked into those ul engines 130 hp would be fun

[swoeric]

Re: what about o235 lycombing

maybe what we need to focus on is an stc that converts the b to an f model and then we run 360's




i like the don swords idea best though

[ajfriz]

Re: what about o235 lycombing

I am no expert but I think every one is missing what i said MY AIR PLANE WAS A LYCOMBING when it was new TC 700 now threw the years taylorcraft evolved in to the F models witch in turn with out any major structural changes and the F models used the 0235 for the power plant of choice so a factory paper trail does exist as does the motor mount and related hardware here is the first problem access to drawings for the F model to show there is no major changes also B model drawings to compare them too

It doesn't matter that it once had a lycoming. The f model doesn't share the same tc as your airplane, so that doesn't really help. Mine had a continental, but that doesn't mean I could easily change it to the o-240, o-300, or tsio-360. The 125 hp o-235 is nearly double the hp that your airplane originally had and I don't think the FAA is going to approve it easily. You might be able to get the 100-108 o235 approved, but even that would be very difficult. It would be cheaper to do a stroked c-85 (97 hp) than buying/rebuilding an o-235 and getting it approved.