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lost in h3
Bronze Level Joined: 06 May 2023 Location: missouri Points: 69 |
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Posted: 03 Apr 2024 at 5:49pm |
Fred
Haven't did anything for a couple of days, Cold and raining here. I got tach, and high idle is seventeen hundred and low is eleven hundred. There is very little response between the two. I know i can get idle down on carburetor but see know way to raise top end. Would like about 2000rpm'
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Fred in Pa
Orange Level Joined: 13 Sep 2009 Location: Hanover Pa. Points: 9106 |
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Did you check the adjustments
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He who dies with the most toys is,
nonetheless ,still dead. If all else fails ,Read all that is PRINTED. |
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Les Kerf
Orange Level Joined: 08 May 2020 Location: Idaho Points: 627 |
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Yup. Unless there is some sort of vacuum sensing apparatus, which I don't believe these engines have. Thus my confusion/misunderstanding/misinterpretation of DMiller's statement above
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DrAllis
Orange Level Access Joined: 12 Sep 2009 Points: 19560 |
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Ignition timing advance mechanism is strictly RPM activated. It cannot and does not sense what the engine load is. The advance's "curve" is designed to work with the engines compression ratio and performance at low speed for best lugging ability.
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Fred in Pa
Orange Level Joined: 13 Sep 2009 Location: Hanover Pa. Points: 9106 |
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Understanding how to adjust and get proper spring tension on spring for high idle is must other wise tachometer is useless .A shop manual has all this in it including complete adjustment of Gov. D-15 is same .
All the H 3 and HD3 I seen had tacks .
Edited by Fred in Pa - 29 Mar 2024 at 6:30am |
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He who dies with the most toys is,
nonetheless ,still dead. If all else fails ,Read all that is PRINTED. |
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Les Kerf
Orange Level Joined: 08 May 2020 Location: Idaho Points: 627 |
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I am confused (quite easily actually) Does it stay at no advance at high idle until load is applied?
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lost in h3
Bronze Level Joined: 06 May 2023 Location: missouri Points: 69 |
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Thank you for the reply Fred. I'll give it a try, currently waiting on a tachometer.
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Fred in Pa
Orange Level Joined: 13 Sep 2009 Location: Hanover Pa. Points: 9106 |
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Make sure throttle is pulling linkage against stop bolt head. Throttle linkage has a adjustment to make this happen if not . This is where it all starts to happen .
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He who dies with the most toys is,
nonetheless ,still dead. If all else fails ,Read all that is PRINTED. |
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DrAllis
Orange Level Access Joined: 12 Sep 2009 Points: 19560 |
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High idle of 2200-2250 RPM. Low idle of I suppose 400 to 450 RPM.
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orangeman
Orange Level Joined: 12 Sep 2009 Points: 1682 |
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AC released a service bulletin regarding this issue, let me see if I can dig it up! ~ Orangeman
Edited by orangeman - 27 Mar 2024 at 1:16pm |
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DMiller
Orange Level Access Joined: 14 Sep 2009 Location: Hermann, Mo Points: 29588 |
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High Idle is No load maximum RPM, governor Limit.
Will add, as a industry standard, for those engines with advance mechanisms, this keeps those on the Idle low power control components of governor at No advance. Edited by DMiller - 27 Mar 2024 at 5:40am |
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lost in h3
Bronze Level Joined: 06 May 2023 Location: missouri Points: 69 |
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what is high idle compared to normal idle?
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lost in h3
Bronze Level Joined: 06 May 2023 Location: missouri Points: 69 |
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that sounds good. cheap!
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steve(ill)
Orange Level Access Joined: 11 Sep 2009 Location: illinois Points: 77889 |
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I bought one of these digital tacks for $15. You stick a piece of reflective tape on the shaft and point the little meter at it... Works great... We were testing PTO speeds on a pump.. I also checked the drill press / lathe / band saw blade.. etc.... very handly.
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Like them all, but love the "B"s.
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DrAllis
Orange Level Access Joined: 12 Sep 2009 Points: 19560 |
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Rated/full load speed of 2,000 RPM means the no-load high idle speed is 2,200 to 2,250 RPM.
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lost in h3
Bronze Level Joined: 06 May 2023 Location: missouri Points: 69 |
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Thank you for suggestion. I guess my first plan of attack is to get my tack working properly so I know where I'm at rpm wise.
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Eric B
Orange Level Joined: 09 Feb 2012 Location: British Columbi Points: 888 |
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Have you tested the RPM at full throttle? I believe governed RPM is 2000. You would always be able to speed it up by manually moving the linkage against the spring tension in the governor. You would be able to speed it up much higher than 2000 that way.
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Currently- WD,WC,3WF's,2 D14's B. Previously- I 600,TL745,200,FL9,FR12,H3,816 LBH. Earth has no sorrow that Heaven cannot heal!
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lost in h3
Bronze Level Joined: 06 May 2023 Location: missouri Points: 69 |
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I'm finishing up a total rebuild (everything) on a 1960 h3.
Question. Should you get full rpm's at full throttle under no load. Mine rev's up but not all the way unless i manually move the governor.
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