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Old 11-05-2019, 04:33 PM
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Lonnie, I am going to get back into the 1.15 tomorrow, keep the info coming on the 45-s, good stuff.

Lonnie, take note of the two 45's above, I have an odd cam housing with the pin lower in the housing. It appears that the older 45 may have that cam housing. It might splain some of the different length components.

Last edited by Hobbsy; 11-05-2019 at 04:42 PM.
Old 11-05-2019, 04:52 PM
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I think I have that reversed, the higher up pin is the older especially note the sides of the housing.
Old 11-05-2019, 04:59 PM
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Originally Posted by Captcrunch44

Here you go old 45 on the top and the new 45,50,56 on the bottom
Wow, thereís quite a difference.
Old 11-05-2019, 05:02 PM
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Originally Posted by Hobbsy
I think I have that reversed, the higher up pin is the older especially note the sides of the housing.
I have never seen a 45 MKI or MKII with those tall lifter bores. I've only seen them on a 45S and up.

Last edited by Glowgeek; 11-05-2019 at 05:08 PM.
Old 11-05-2019, 05:08 PM
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I am not sure, it was just here in a box of stuff I was given. When I removed the pump from the 1.30 I installed that cam box and to my surprise the gears did not mesh. I'll see if I still have it. That older 45 cam is sure mellow looking.

Last edited by Hobbsy; 11-05-2019 at 05:09 PM. Reason: Punctuation
Old 11-05-2019, 05:25 PM
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Gave those dimensions and noted the differences about a month ago.

LOL

Back when I sent Lonnie the parts pile.

Differences in the roof of the cam box too.
Old 11-05-2019, 05:31 PM
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Well here are 4 generations of 40s noticed the head change then the carb change and then the physical size change. Canít really show the cam change other then the pic earlier
Old 11-05-2019, 05:34 PM
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Originally Posted by Jesse Open
Gave those dimensions and noted the differences about a month ago.

LOL

Back when I sent Lonnie the parts pile.

Differences in the roof of the cam box too.
the cam housings all measure the same from base to top of cam housing the biggest difference is is the pin location in the housing
Old 11-05-2019, 05:36 PM
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Also the 45 has the same changes other then the lack of a small case 45.
Old 11-05-2019, 05:43 PM
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Originally Posted by Captcrunch44


the cam housings all measure the same from base to top of cam housing the biggest difference is is the pin location in the housing

Gave the differences a month ago
Old 11-05-2019, 05:59 PM
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Gary, I remember you pointing out the difference in cam pin centerlines. What size engine were those cam housings for?

Crunchy, I stand corrected. Those later model 40's had the taller tappets and tappet bores too I see.
Old 11-05-2019, 06:04 PM
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Ok ok
out side of the housing are the same
but the inside roof is taller by .00010. On the newer housing.

that fact that someone just changed the cam in a old 45 to make a 45 special is a little far fetched. He would have had to change the housing and more.
glad I finally got off my butt to actually Measure this stuff myself. so much gets lost in this thread and so much info flyís around I canít keep up with it all.
Old 11-05-2019, 06:06 PM
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Not to answer for Gary but the housingís I just Measured both came off of 45s one off the old style 45 and one off a new style 45
Old 11-05-2019, 06:08 PM
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Also the earlier 40-45 had a two price head. Witch makes the head even taller
Old 11-05-2019, 06:08 PM
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Originally Posted by Captcrunch44
Ok ok
out side of the housing are the same
but the inside roof is taller by .00010. On the newer housing.

that fact that someone just changed the cam in a old 45 to make a 45 special is a little far fetched. He would have had to change the housing and more.
glad I finally got off my butt to actually Measure this stuff myself. so much gets lost in this thread and so much info flyís around I canít keep up with it all.
All that's required to fit a 50 cam in a 45 cam housing is to grind off the the brass tappet guides on the inside of the 45 cam housing, that's not a problem. It's the "and more" part that'll getcha.

Last edited by Glowgeek; 11-06-2019 at 03:27 AM.
Old 11-05-2019, 06:11 PM
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Originally Posted by Captcrunch44
Also the earlier 40-45 had a two price head. Witch makes the head even taller
Yep, the MKI 40 and 45 has a two piece head and the intake manifold enters more on the side of the head than at the rear..

Last edited by Glowgeek; 11-06-2019 at 03:30 AM.
Old 11-05-2019, 06:13 PM
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Also I believe, I havenít had one apart in a while I believe the mk1 also doesnít have a ring
Old 11-05-2019, 06:14 PM
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Yep, MKI is abc

Last edited by Glowgeek; 11-06-2019 at 03:25 AM.
Old 11-05-2019, 06:17 PM
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They sure run good captcrunch JR. has one on her Kadet
Old 11-05-2019, 06:45 PM
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My Gdaughter loves to watch us fly. Asked her if she wanted to learn how.....nope.
Old 11-05-2019, 07:10 PM
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Originally Posted by Captcrunch44
Ok ok
out side of the housing are the same
but the inside roof is taller by .00010. On the newer housing.

that fact that someone just changed the cam in a old 45 to make a 45 special is a little far fetched. He would have had to change the housing and more.
glad I finally got off my butt to actually Measure this stuff myself. so much gets lost in this thread and so much info flyís around I canít keep up with it all.
Really?

So there are only two types?
I saw a difference with the internal length of the tappet guide.

Nevermind, you have it all figured out

Last edited by Jesse Open; 11-05-2019 at 07:12 PM.
Old 11-05-2019, 08:30 PM
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Originally Posted by Glowgeek
My Gdaughter loves to watch us fly. Asked her if she wanted to learn how.....nope.
Show her the pink airplane when I get it done maybe she'll change her mind?
Old 11-05-2019, 11:09 PM
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Okey that could be a disaster wallet wise for lonnie, what if she falls instantly in love with your pink plane and just has to fly it with all pink accessories like a 2000 dollar pink JR tx and flight box? not countin a whole new pink outfit for her with matching shoes, THINK MAN!

ps gary captain crunch did say he was getting swamped with info and kinda lost track of things, could you paste your previous post above your latest comments.
Old 11-06-2019, 04:21 AM
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Originally Posted by FlyerInOKC
Show her the pink airplane when I get it done maybe she'll change her mind?
I'll text her a pic of pinky-poo when you're finished. Doubtful she'll change her mind though, she's such a girly-girl.

Pete, true, she would want the whole ensemble!
Old 11-06-2019, 05:09 AM
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This is my Saito 45 with the cam and other parts from a Saito 50 upgrade. On a 11X6 it picked up about 350 RPM on my 3% nitro home brew fuel. In the original form the Saito 45 was never happy with a 12X5 prop. With the upgrade it has run gallons of fuel through it with a 12X5 prop that it is very happy with. It still uses the original 45 carb.
Pete

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