RE: Bent crank ? I'll fix it for free.  
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RE: Bent crank ? I'll fix it for free. - 1/30/2008 3:03:19 PM   
vicman



Posts: 6206
Joined: 12/8/2002
From: Valdese, NC, USA
Status: offline 		Looks like it fit back in the case.
What did you end up with for TIR?


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RE: Bent crank ? I'll fix it for free. - 1/30/2008 3:27:51 PM   
Edwin


 

Posts: 3381
Joined: 2/8/2002
From: Leander, TX, USA
Status: offline 		Vicman, Dave,
How did you get it out of the case and bearings? I warm the case up then use a vice or arbor press. With a bent crank I would think it would jam up. Not true?
Edwin

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       Post #: 52

RE: Bent crank ? I'll fix it for free. - 1/30/2008 4:21:15 PM   
Kmot



Posts: 7740
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline 		Edwin, you have to use one of those special curved arbor presses.

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RE: Bent crank ? I'll fix it for free. - 1/30/2008 6:07:44 PM   
Edwin


 

Posts: 3381
Joined: 2/8/2002
From: Leander, TX, USA
Status: offline 		Hot Dawg!! A new tool!!<g>
Edwin

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       Post #: 54

RE: Bent crank ? I'll fix it for free. - 1/31/2008 2:23:23 AM   
Flyboy Dave



Posts: 13452
Joined: 3/20/2002
From: San Bernardino County, CA, USA
Status: online 		Craig....your engine is on it's way back home...Priority Mail.

FBD.

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An engineer says.... "That won''t work".
A mechanic says..."Oh yeah, watch this".
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       Post #: 55

RE: Bent crank ? I'll fix it for free. - 1/31/2008 11:02:58 PM   
craigpuckett


 

Posts: 86
Joined: 5/16/2007
From: Rison, AR, USA
Status: online

MUCH thanks Dave

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       Post #: 56

RE: Bent crank ? I'll fix it for free. - 1/31/2008 11:58:34 PM   
Flyboy Dave



Posts: 13452
Joined: 3/20/2002
From: San Bernardino County, CA, USA
Status: online 		....'yer welcome, Craig....

....let's see how that baby runs. The concern with a bent crank is....will the engines
run smooth after that heavy of a crash. Make sure to use a nicely balanced prop to
give the engine a chance to "regroup". I find that a disassembled engine takes about
a half hour's running or so to get back in shape.

Use plenty of castor with that engine, the more the better.

FBD.

_____________________________

An engineer says.... "That won''t work".
A mechanic says..."Oh yeah, watch this".
"Old Age, and Treachery will overcome youth and skill".
Revver Bro #4.

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       Post #: 57

RE: Bent crank ? I'll fix it for free. - 2/3/2008 8:21:00 PM   
craigpuckett


 

Posts: 86
Joined: 5/16/2007
From: Rison, AR, USA
Status: online 		Dave;
The crank/block came in the mail yesterday I put everything back together and it turns over real good I will have to wait untill I get a thrustwasher/drivewasher and spinnernut to try it out. I too am a believer in castor

I can see a new plane in the future

YOUR DA MAN DAVE !!!!

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       Post #: 58

RE: Bent crank ? I'll fix it for free. - 2/20/2008 3:53:38 AM   
Flyboy Dave



Posts: 13452
Joined: 3/20/2002
From: San Bernardino County, CA, USA
Status: online 		....Craig....did you get that engine running ?

_____________________________

An engineer says.... "That won''t work".
A mechanic says..."Oh yeah, watch this".
"Old Age, and Treachery will overcome youth and skill".
Revver Bro #4.

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       Post #: 59

RE: Bent crank ? I'll fix it for free. - 2/20/2008 6:19:37 AM   
craigpuckett


 

Posts: 86
Joined: 5/16/2007
From: Rison, AR, USA
Status: online 		Dave;
I used the carb that was on that engine on a 40fp,so now I have to scrounge another carb

I have no doubt about it running when I get all the parts

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       Post #: 60

RE: Bent crank ? I'll fix it for free. - 2/21/2008 11:30:06 AM   
Flyboy Dave



Posts: 13452
Joined: 3/20/2002
From: San Bernardino County, CA, USA
Status: online 		....good deal. I am anxious to see how it runs, especially in the smoothness department.

I have two more engines coming in the mail for crank straightening, and another fellow is
sending a connecting rod for me to stress relieve by bead blasting.

Is this fun, or what ?

FBD.

_____________________________

An engineer says.... "That won''t work".
A mechanic says..."Oh yeah, watch this".
"Old Age, and Treachery will overcome youth and skill".
Revver Bro #4.

(in reply to craigpuckett)
       Post #: 61

RE: Bent crank ? I'll fix it for free. - 2/21/2008 5:34:38 PM   
craigpuckett


 

Posts: 86
Joined: 5/16/2007
From: Rison, AR, USA
Status: online 		The plan for today is to run the FP on the test stand,then rob all the parts I need for the LA from the FP and run it too

dang clouds and wind keep me from flying today, but I WILL burn some nitro

If all go as planed I can report tonite

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       Post #: 62

RE: Bent crank ? I'll fix it for free. - 2/21/2008 5:50:44 PM   
Flyboy Dave



Posts: 13452
Joined: 3/20/2002
From: San Bernardino County, CA, USA
Status: online 		....great, Craig. I flew Monday and Tuesday....then my weather went bad too....wind and
snow yesterday. I did have a chance to do some small repairs and stuff on the three planes
I took out. I still have one to look at....the main needle is really hard to turn in a Magnum
.91 four stroke....that one has me scratching my head, what would cause that ?

FBD.

_____________________________

An engineer says.... "That won''t work".
A mechanic says..."Oh yeah, watch this".
"Old Age, and Treachery will overcome youth and skill".
Revver Bro #4.

(in reply to craigpuckett)
       Post #: 63

RE: Bent crank ? I'll fix it for free. - 2/22/2008 1:22:39 AM   
craigpuckett


 

Posts: 86
Joined: 5/16/2007
From: Rison, AR, USA
Status: online 		"the main needle is really hard to turn in a Magnum .91 four stroke....that one has me scratching my head, what would cause that "

my guess would be some "O" ring in the threads or maybe some castor varnish

I did indeed run both the FP and the LA ,of the two the LA was the smoothest @ WOT but sounded like a drum below 1/3 throttle. I am thinking its the plastic back cover that's making so much noise.

the crankshaft straightening job was right on, MANY THANKS DAVE

(in reply to Flyboy Dave)
       Post #: 64

RE: Bent crank ? I'll fix it for free. - 2/22/2008 2:21:05 AM   
Flyboy Dave



Posts: 13452
Joined: 3/20/2002
From: San Bernardino County, CA, USA
Status: online 		....is there a lot of freeplay...fore and aft with the crank ? There might be the drum beat.

....just a guess. You might be right about rubber in the main needle threads.

FBD.

_____________________________

An engineer says.... "That won''t work".
A mechanic says..."Oh yeah, watch this".
"Old Age, and Treachery will overcome youth and skill".
Revver Bro #4.

(in reply to craigpuckett)
       Post #: 65

RE: Bent crank ? I'll fix it for free. - 2/22/2008 9:33:41 AM   
The Raven