cv 12 mounted on lmh 117  
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cv 12 mounted on lmh 117 - 11/3/2003 2:29:20 AM   
notasme



Posts: 178
Joined: 4/25/2003
From: Oswego, IL,
Status: offline 		Well I finished mounting a OS cv12 on my lmh 117. it started out 3 years ago as a 110 (v6). Two years ago I upgraded to v7. Now I installed an OS cv12. It was to wet to fly today but maybe later this week.

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notasme
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RE: cv 12 mounted on lmh 117 - 11/3/2003 2:34:51 AM   
notasme



Posts: 178
Joined: 4/25/2003
From: Oswego, IL,
Status: offline 		Here are a few more PICs.

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notasme

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RE: cv 12 mounted on lmh 117 - 11/3/2003 2:41:36 AM   
lyk2fly


 

Posts: 357
Joined: 7/1/2003
From: Turtletown, TN, USA
Status: offline 		WOW!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

(in reply to notasme)
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RE: cv 12 mounted on lmh 117 - 11/3/2003 3:25:25 AM   
fiat


 

Posts: 326
Joined: 9/15/2003
From: albemarle, NC, USA
Status: offline 		GREAT job I wonder if you will develope enough rotor rpm's with the bigger tooth bell. Also have you run it on the crutch yet ?? I notice only 2 bolts ,, is it real solid ? I too was thinking of mounting mine from the rear. Alan

(in reply to lyk2fly)
       Post #: 4

RE: cv 12 mounted on lmh 117 - 11/3/2003 4:00:21 AM   
Spiro



Posts: 312
Joined: 4/14/2003
From: Mesa, AZ, USA
Status: offline 		Nice work!

How about some details?

Clutch and bell source, part numbers, teeth.
Starter cone.
Motor mount.
Main Rotor Shaft Length.
Throttle Setup.
All up weight.
CG location.

And video! We demand video!
No pressure now or anything

Great job,
Spiro

< Message edited by Spiro -- 11/3/2003 4:02:44 AM >

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RE: cv 12 mounted on lmh 117 - 11/3/2003 4:23:22 AM   
fiat


 

Posts: 326
Joined: 9/15/2003
From: albemarle, NC, USA
Status: offline 		I have a .12cvr thanx to lyk2fly which developes 31,000 at wide open and the norvel puts out 25,000 so a bigger clutch bell like you have looks like a winner I would just like to know if you have enough rpm's to lift off and at what throttle setting. I plan to get the rest of the stuff I need to complete my converstion with a spair crutch . I am still waiting on a newv-7 and I hope it holds together LOL Alan

(in reply to Spiro)
       Post #: 6

RE: cv 12 mounted on lmh 117 - 11/3/2003 5:22:43 AM   
Mini Boy


 

Posts: 432
Joined: 2/4/2003
From: Webster, MA, USA
Status: offline 		Notasme!

I am not a fan of those oil slingers, but I recognize a clever dude when I see innovative work like you are doing!! AND ... if it all comes together, you will have become the saviour of a lot of unhappy campers out there who are getting pretty disgusted with those foolish Norvel engines.

Keep up the good work and I hope you achieve success!!

Russ

(in reply to fiat)
       Post #: 7

RE: cv 12 mounted on lmh 117 - 11/3/2003 1:53:39 PM   
notasme



Posts: 178
Joined: 4/25/2003
From: Oswego, IL,
Status: offline 		All,

All of the parts where machined by me. I have the equipment to prototype this type of hardware.

The starter cone was turned from 3/4" aluminium stock.
The clutch was turned and ground form 5/8 440 stainless
The engine is mounted to the U block with 4- 4-40- 1/2" hardened screws
The U-mountind is bolted to the frame with 2 - 6-32 1 3/4 Hardened screws (and yes it is more then enough to hold the engine to the frame)
Mounts to the same holes as the v7.
The rotor RPMs will be higher then with a v7 with more power.
THe frame was made by me by using the wood frame as a template (2 years ago and has been flown with a v6 and a v7).
I put in a high amphr receiver Bat., which off-sets the additional weight of the engine.
I lengthened the rear landing gear mount so that the front and rear are the same.

My choices of mufflers was limited, I know there are some smaller ones out there but I wanted to get this started. I will be looking for a replacement.

If the weather gets better here I will take some pics of it flying.

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notasme

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RE: cv 12 mounted on lmh 117 - 11/3/2003 2:04:34 PM   
notasme



Posts: 178
Joined: 4/25/2003
From: Oswego, IL,
Status: offline 		All,

PS. I have a old schluter 60ed size and the engine is mounted to the frame with two blots in the same fashion. This has held up since 1987.

Them main shaft is 5/32 music wire from the LHS (been using this stuff for the main shaft for 3 years works great, I replaced the original one with this and have not had to replace it up until now because I need the shaft to be 1/4" longer.

Now all I have left for the winter is to mount the CP mod I have sitting completed on my bench.

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notasme

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RE: cv 12 mounted on lmh 117 - 11/3/2003 5:21:53 PM   
T.W.


 

Posts: 952
Joined: 10/25/2002
From: Way Up North , UNITED KINGDOM
Status: offline 		Great work notasme

Your engine installation looks "the business" and is something along the lines of what I too intend doing over the coming winter months. I (and many more here) will be very interested to read how this engine performs for you, so please keep us posted on it's ability to provide the LMH's motive power

If all goes well with your flight tests - can I be the first to place an order for your "modification kit" . Well, such a kit would make this kind of mod much easier for people like me with no lathe to hand - can I tempt you to produce it?

Keep up the good work,

Tony

(in reply to notasme)
       Post #: 10

RE: cv 12 mounted on lmh 117 - 11/3/2003 7:23:33 PM   
notasme



Posts: 178
Joined: 4/25/2003
From: Oswego, IL,
Status: offline 		T.W.

At the present time I am not going to sell kits. But, if someone wanted drawings of the parts I would send CAD drawings to them.

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notasme

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RE: cv 12 mounted on lmh 117 - 11/5/2003 4:58:09 AM   
spdfrek


 

Posts: 114
Joined: 8/28/2003
From: Grassy Butte , ND, USA
Status: offline 		I'd love to see the results to this.Something I'd try as my vmax 6 is troublesome and the 7 seems to have its share of problems as well.Curious why you went electric start insted of PS?Also is it possible to use a normal car clutch and pinion?I don't have access to alot of machining equipment.

Joey

(in reply to notasme)
       Post #: 12

RE: cv 12 mounted on lmh 117 - 11/5/2003 8:53:38 AM   
T.W.


 

Posts: 952
Joined: 10/25/2002
From: Way Up North , UNITED KINGDOM
Status: offline 		Notasme: As Spiro said: "No pressure now or anything" . . . . but . . . . have you had the engine running yet? How did your clutch perform (did it grab too quickly for instance - I hope not). Is your gearing about right? Does the engine/gearing/rotor-size allow flight, bearing in mind the extra weight?

Please update us, and again quoting Spiro: ". . . . video! We demand video!"

There's already quite a lot of interest in this kind of LMH powerplant transplant, and if your system is a success I can guarantee you will have many imitators, me included

Tony

(in reply to spdfrek)
       Post #: 13

RE: cv 12 mounted on lmh 117 - 11/5/2003 3:18:55 PM   
notasme



Posts: 178
Joined: 4/25/2003
From: Oswego, IL,
Status: offline 		T.W.

The weather here (chicago) has not been conducive to flying. Plus by the time I get home it is dark so any flight testing is going to wait until the weekend.
I did talk to Paul at LM and his comment was that I would have enough power to ripe the rotor blades off (at full power) He thinks that with the power and RPM rating it will be off the ground a just above ideal. SO, most likely I will be running rich and do some EPA to allow for full stick deflection.

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notasme

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RE: cv 12 mounted on lmh 117 - 11/5/2003 4:36:42 PM   
T.W.


 

Posts: 952
Joined: 10/25/2002
From: Way Up North , UNITED KINGDOM
Status: offline 		Understood about your weather situation. But you just can't imagine how interested I am in your modification. I've got my fingers crossed for you to get the chance to do some flight-tests this weekend

Tony

(in reply to notasme)
       Post #: 15

RE: cv 12 mounted on lmh 117 - 11/5/2003 7:16:44 PM