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External
Since: Jun 28, 2006
Posts: 53
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(Msg. 1) Posted: Mon Jul 31, 2006 11:55 am
Post subject: Stripped splines at top of drive shaft. (1988 Evinrude Junior 2hp outboard)
Archived from groups: uk>rec>sailing, others (more info?)
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I bought a 2nd-hand Evinrude Junior (2 hp) outboardb motor, circa
1988. The motor is generally in good order except that the top 1/2" of
the splines at the top end of the driveshaft are stripped above their
half-way point. In other words, if the splines are 1" long, the top
1/2" are stripped off.
The engine was running OK at first. Then I dismantled the leg of the
motor for routine maintenance and I notoced the stripped splines as
soon as I removed the shaft. Strangely enough, they had not actually
given any noticeable problem until after I reassembled and ran the
motor... It was only then that the splines started failing to stay
engaged.
I have not tried to investigate the state of the splines inside the
crankshaft which are supposed to engage with those on the drive shaft.
Since a new drive shaft and crankshaft are hard to obtain, I'm
wondering if anyone could suggest a way to jerry-rig it. I was
thinking of perhaps gluing the drive shaft into the crankshaft with
epoxy, or perhaps cutting the knackered top 1/2" off the crankshaft
and then welding a 1/2" extension into the shaft, further down...
Any suggestions?
Thank you,
AL Deveron |
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External
Since: Jul 03, 2005
Posts: 9
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(Msg. 2) Posted: Mon Jul 31, 2006 11:55 am
Post subject: Re: Stripped splines at top of drive shaft. (1988 Evinrude Junior 2hp outboard) [Login to view extended thread Info.]
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External
Since: Jun 28, 2006
Posts: 150
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(Msg. 3) Posted: Mon Jul 31, 2006 11:55 am
Post subject: Re: Stripped splines at top of drive shaft. (1988 Evinrude Junior 2hp outboard) [Login to view extended thread Info.]
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External
Since: Jun 28, 2006
Posts: 53
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(Msg. 4) Posted: Mon Jul 31, 2006 12:55 pm
Post subject: Re: Stripped splines at top of drive shaft. (1988 Evinrude Junior 2hp outboard) [Login to view extended thread Info.]
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External
Since: Jun 14, 2006
Posts: 2
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(Msg. 5) Posted: Mon Jul 31, 2006 3:55 pm
Post subject: Re: Stripped splines at top of drive shaft. (1988 Evinrude Junior 2hp outboard) [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Al Deveron" <wmth2581.DeleteThis@aol.com> wrote in message
news:oa4sc2h3to204ej73igpfo0qhpir6sdmch@4ax.com...
>
> I bought a 2nd-hand Evinrude Junior (2 hp) outboardb motor, circa
> 1988. The motor is generally in good order except that the top 1/2" of
> the splines at the top end of the driveshaft are stripped above their
> half-way point. In other words, if the splines are 1" long, the top
> 1/2" are stripped off.
>
> The engine was running OK at first. Then I dismantled the leg of the
> motor for routine maintenance and I notoced the stripped splines as
> soon as I removed the shaft. Strangely enough, they had not actually
> given any noticeable problem until after I reassembled and ran the
> motor... It was only then that the splines started failing to stay
> engaged.
>
> I have not tried to investigate the state of the splines inside the
> crankshaft which are supposed to engage with those on the drive shaft.
>
> Since a new drive shaft and crankshaft are hard to obtain, I'm
> wondering if anyone could suggest a way to jerry-rig it. I was
> thinking of perhaps gluing the drive shaft into the crankshaft with
> epoxy, or perhaps cutting the knackered top 1/2" off the crankshaft
> and then welding a 1/2" extension into the shaft, further down...
>
> Any suggestions?
>
> Thank you,
>
> AL Deveron
I've had good succes in a similar situation (old british motorbike) using a
product called 'chemical metal' - I think plastic padding now sell it.
Basically, mix the goop up and plaster what's left of the splines with it
(having cleaned them thoroughly and then giving them a quick abrade with
coarse emery cloth) shve them in position and within ten minutes it has
set. Fantastic stuff. I've even repaired the studs in a cylinder head with
it and on the box they claim that you can even fix gear teeth with it.
HTH
Floatything >> Stay informed about: Stripped splines at top of drive shaft. (1988 Evinrude Jun.. |
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External
Since: Jun 28, 2006
Posts: 53
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(Msg. 6) Posted: Mon Jul 31, 2006 3:55 pm
Post subject: Re: Stripped splines at top of drive shaft. (1988 Evinrude Junior 2hp outboard) [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Mon, 31 Jul 2006 18:12:17 GMT, "Floatything"
<chris_knibbssink.RemoveThis@thespamntlworld.com> wrote:
>I've had good succes in a similar situation (old british motorbike) using a
>product called 'chemical metal' - I think plastic padding now sell it.
Well, that's promising - thank you. It certainly must be the quickest,
cheapest way to fix it. I wasn't sure if such a method would last very
long, and whether any water passage blockages might occur if the
epoxy+filler disintegrated. I have some American stuff called JB-Weld
that might suit. It has a high temperature tolerance than other epoxy
products (according to the maker's specs, anyway).
Al D >> Stay informed about: Stripped splines at top of drive shaft. (1988 Evinrude Jun.. |
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External
Since: Jun 28, 2006
Posts: 53
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(Msg. 7) Posted: Mon Jul 31, 2006 3:55 pm
Post subject: Re: Stripped splines at top of drive shaft. (1988 Evinrude Junior 2hp outboard) [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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External
Since: Aug 06, 2006
Posts: 1
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(Msg. 8) Posted: Sun Aug 06, 2006 6:55 pm
Post subject: Re: Stripped splines at top of drive shaft. (1988 Evinrude Junior [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Al Deveron wrote:
> I bought a 2nd-hand Evinrude Junior (2 hp) outboardb motor, circa
> 1988. The motor is generally in good order except that the top 1/2" of
> the splines at the top end of the driveshaft are stripped above their
> half-way point. In other words, if the splines are 1" long, the top
> 1/2" are stripped off.
>
> The engine was running OK at first. Then I dismantled the leg of the
> motor for routine maintenance and I notoced the stripped splines as
> soon as I removed the shaft. Strangely enough, they had not actually
> given any noticeable problem until after I reassembled and ran the
> motor... It was only then that the splines started failing to stay
> engaged.
>
> I have not tried to investigate the state of the splines inside the
> crankshaft which are supposed to engage with those on the drive shaft.
>
> Since a new drive shaft and crankshaft are hard to obtain, I'm
> wondering if anyone could suggest a way to jerry-rig it. I was
> thinking of perhaps gluing the drive shaft into the crankshaft with
> epoxy, or perhaps cutting the knackered top 1/2" off the crankshaft
> and then welding a 1/2" extension into the shaft, further down...
>
> Any suggestions?
>
> Thank you,
>
> AL Deveron
Plastic metal is MOST unlikely to hold up in service in this usage. I
use it at work when I cock up a job < Not all that often> and while it
is o.k. as a filler it has little tensile strength.
I would recommend welding an extension to the shaft lower down FIRST.
Then take the partly repaired shaft to a machine shop and get them to
turn the welded and extended portion to the original diameter,
afterwards they should part off the damaged portion and machine an
extension to the splines back to the original dimensions.
This should not cost a lot anywhere and if you are in the Colchester,
Essex area send me a private e-mail and I'll get it sorted for you.
Tony Cook >> Stay informed about: Stripped splines at top of drive shaft. (1988 Evinrude Jun.. |
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External
Since: Feb 16, 2006
Posts: 32
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(Msg. 9) Posted: Mon Aug 07, 2006 1:55 pm
Post subject: Re: Stripped splines at top of drive shaft. (1988 Evinrude Junior 2hp outboard) [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Tony Cook" <theidiamin RemoveThis @ntlworld.com> wrote in message
news:FotBg.544$yG1.99@newsfe1-win.ntli.net...
> Al Deveron wrote:
>> I bought a 2nd-hand Evinrude Junior (2 hp) outboardb motor, circa
>> 1988. The motor is generally in good order except that the top 1/2" of
>> the splines at the top end of the driveshaft are stripped above their
>> half-way point. In other words, if the splines are 1" long, the top
>> 1/2" are stripped off. The engine was running OK at first. Then I
>> dismantled the leg of the
>> motor for routine maintenance and I notoced the stripped splines as
>> soon as I removed the shaft. Strangely enough, they had not actually
>> given any noticeable problem until after I reassembled and ran the
>> motor... It was only then that the splines started failing to stay
>> engaged.
>>
>> I have not tried to investigate the state of the splines inside the
>> crankshaft which are supposed to engage with those on the drive shaft.
>>
>> Since a new drive shaft and crankshaft are hard to obtain, I'm
>> wondering if anyone could suggest a way to jerry-rig it. I was
>> thinking of perhaps gluing the drive shaft into the crankshaft with
>> epoxy, or perhaps cutting the knackered top 1/2" off the crankshaft
>> and then welding a 1/2" extension into the shaft, further down...
>>
>> Any suggestions?
>>
>> Thank you,
>>
>> AL Deveron
> Plastic metal is MOST unlikely to hold up in service in this usage. I use
> it at work when I cock up a job < Not all that often> and while it is o.k.
> as a filler it has little tensile strength.
>
snip
Except the plastic metal will be in compression and possibly sheer - more
likely a bit of both.
As the reason it drove OK before dissemble is usually rust (definitely
rubbish in tension) my feeling is plastic metal or similar may well do the
trick, but I cringe at the thought of subsequent disassembly.
I hope this is for lake and canal use only with that sort of "repair"
--
Tony Brooks
www.TB-Training.co.uk >> Stay informed about: Stripped splines at top of drive shaft. (1988 Evinrude Jun.. |
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External
Since: Apr 13, 2006
Posts: 10
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(Msg. 10) Posted: Thu Aug 10, 2006 4:55 am
Post subject: Re: Stripped splines at top of drive shaft. (1988 Evinrude Junior 2hp outboard) [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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I had a similar problem with a Mariner outboard drive shaft. I was able to
reverse the shaft and cut longer splines on the opposite end. I also had to
cut a new slot for the water pump drive key. It took a lot of careful
cutting with the blade of a hacksaw, then some accurate filing.
Good luck
Davy M.
"Tony Brooks" <tony.DeleteThis@tb-training.co.uk> wrote in message
news:ybCdnQ-BqZMH8UrZRVnyvQ@bt.com...
>
> "Tony Cook" <theidiamin.DeleteThis@ntlworld.com> wrote in message
> news:FotBg.544$yG1.99@newsfe1-win.ntli.net...
>> Al Deveron wrote:
>>> I bought a 2nd-hand Evinrude Junior (2 hp) outboardb motor, circa
>>> 1988. The motor is generally in good order except that the top 1/2" of
>>> the splines at the top end of the driveshaft are stripped above their
>>> half-way point. In other words, if the splines are 1" long, the top
>>> 1/2" are stripped off. The engine was running OK at first. Then I
>>> dismantled the leg of the
>>> motor for routine maintenance and I notoced the stripped splines as
>>> soon as I removed the shaft. Strangely enough, they had not actually
>>> given any noticeable problem until after I reassembled and ran the
>>> motor... It was only then that the splines started failing to stay
>>> engaged.
>>>
>>> I have not tried to investigate the state of the splines inside the
>>> crankshaft which are supposed to engage with those on the drive shaft.
>>>
>>> Since a new drive shaft and crankshaft are hard to obtain, I'm
>>> wondering if anyone could suggest a way to jerry-rig it. I was
>>> thinking of perhaps gluing the drive shaft into the crankshaft with
>>> epoxy, or perhaps cutting the knackered top 1/2" off the crankshaft
>>> and then welding a 1/2" extension into the shaft, further down...
>>>
>>> Any suggestions?
>>>
>>> Thank you,
>>>
>>> AL Deveron
>> Plastic metal is MOST unlikely to hold up in service in this usage. I use
>> it at work when I cock up a job < Not all that often> and while it is
>> o.k. as a filler it has little tensile strength.
>>
>
> snip
>
> Except the plastic metal will be in compression and possibly sheer - more
> likely a bit of both.
>
> As the reason it drove OK before dissemble is usually rust (definitely
> rubbish in tension) my feeling is plastic metal or similar may well do the
> trick, but I cringe at the thought of subsequent disassembly.
>
> I hope this is for lake and canal use only with that sort of "repair"
>
>
> --
> Tony Brooks
> www.TB-Training.co.uk
>
>
>
>
> >> Stay informed about: Stripped splines at top of drive shaft. (1988 Evinrude Jun.. |
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