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Author Topic: Jensen model 40 what do you think  (Read 1549 times)

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Jensen model 40 what do you think
« on: October 25, 2019, 02:58:43 pm »
https://www.youtube.com/watch?v=09I8cC7aOeY&lc=z23fyhrajx2ld5qfwacdp434c21wshvcibvda43foydw03c010c

Here is a Jensen model 40 I picked up several years ago. Thought I'd share. What do you think about it?
Has anyone else seen one or have one. Specifically the bolts holding down the steam chest has springs under them.
Randy pointed out the crankshaft is counter balanced too.
Anyone have a 40 or seen this on another #5?

I got to looking through my collection and only the new 75's, the 55's and very early 30's engines are counter balanced
I thought this was interesting.
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Jack Boyles III
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Re: Jensen model 40 what do you think
« Reply #1 on: October 25, 2019, 04:41:42 pm »
Interesting piece.

Thanks for sharing Jack.
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Re: Jensen model 40 what do you think
« Reply #2 on: October 25, 2019, 05:47:42 pm »
I have a 40 at home on the shelf, will have to take a look and get some pictures to compare...
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Nick

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Re: Jensen model 40 what do you think
« Reply #3 on: October 25, 2019, 06:38:13 pm »
I have two model 5s with that crankshaft. The later model 70s used that crank also. The springs under the steam chest screws make no sense to me. I think it’s likely that is something a previous owner may have done.
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Mike

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Re: Jensen model 40 what do you think
« Reply #4 on: October 26, 2019, 03:52:36 am »
Nice engine, thanks for sharing !  :)

Agree with Mike, those screws/springs would most likely be something from a previous owner.
Tom Jensen would definitely have shortened those screws, as there´s no gain by having the engine throwing away power, by wobbling around on that pedestal.

As far as the snowman whistlehandle goes, one would need a very well documented one owner engine, to ensure that it isn´t a later addition. Whistles ans SVs does get replaced...or mixed up.
Should it be the case, that it has been on there from the factory, the engine is a tad later than estimated, and can´t be any older than the very late 60´s.
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Jan
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Re: Jensen model 40 what do you think
« Reply #5 on: October 26, 2019, 07:50:59 am »
Nice #40, Jack!


I agree with Mike and Jan that the springs were added by a previous owner. Given that they serve no useful purpose, perhaps he just liked the look or possibly had it apart and could not find the correct screws and needed the springs as spacers to adapt longer screws. You can check the screw length against those on any other #5. If they are the correct original length I would suggest removing the springs and put it back as intended.


There is another possibility.... a former owner may have snapped an original screw off in the iron base and needed the spring to use an original length
screw.
The whistle is a replacement. Jensen was making these on steel bases with straight wood handles before he went to the hour glass wood handles.

Altogether a very nice engine.


Gil
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Re: Jensen model 40 what do you think
« Reply #6 on: October 26, 2019, 08:03:45 am »

Here's a steel based #40 with straight handles.
Somewhere in the 1960's the wood base became steel.



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Re: Jensen model 40 what do you think
« Reply #7 on: October 26, 2019, 10:11:42 am »
That's a very attractive engine Gil!  8)
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Nick

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Re: Jensen model 40 what do you think
« Reply #8 on: October 27, 2019, 12:06:29 am »
Just had a look at mine that came from the original owner and it is the twin to this model, right down to the mis-matched handles.
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Nick

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Re: Jensen model 40 what do you think
« Reply #9 on: October 27, 2019, 01:08:52 am »
Quote from: Nick on October 27, 2019, 12:06:29 am
Just had a look at mine that came from the original owner and it is the twin to this model, right down to the mis-matched handles.

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Nick

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Re: Jensen model 40 what do you think
« Reply #10 on: November 06, 2019, 11:36:22 am »
Nice engine's Jack , Nick , Gil , the vertical boilers have quickly become a favorite of mine because of their capacity & good heating capabilities.
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Bruce, St. Paul Indiana, USA
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