tach hook up in magneto
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=185704
Printed Date: 23 May 2025 at 2:18pm
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Topic: tach hook up in magneto
Posted By: HudCo
Subject: tach hook up in magneto
Date Posted: 12 Jan 2022 at 10:18am
| my wd has wico mag and i have a little 2" 3000 rpm distributer coil ingition tach thought i would mount it by the traction booster gauge. can i hook the the green tach wire to the coil or points ? dont need the tach as we know where 540 is on the quadrant and been on the tractor for fifty years but have the need to mess around some |
Replies:
Posted By: PaulB
Date Posted: 12 Jan 2022 at 11:38am
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You'll need a tachometer specially made for a magneto unless you have a mechanical tach. One for a distributer will not work. I have a 6 cyl magneto tach, so I know they are out there. Westach will make just about any gauge you desire, for a price. ------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |
Posted By: Fred in Pa
Date Posted: 12 Jan 2022 at 11:39am
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This will be intresting hear, I would think it would act act as grounding to the points. ------------- He who dies with the most toys is, nonetheless ,still dead. If all else fails ,Read all that is PRINTED. |
Posted By: steve(ill)
Date Posted: 12 Jan 2022 at 6:43pm
------------- Like them all, but love the "B"s. |
Posted By: B26240
Date Posted: 12 Jan 2022 at 6:54pm
| Steve we put one of those cheep tacs you showed a picture of on the saw mill arbor shaft at our tractor clubs saw mill and it works great. The saw on the mill is hammered to run at 600 RPM's . We mounted the readout so spectators can't see it . We have used it for two years with no problems. |
Posted By: allischalmerguy
Date Posted: 12 Jan 2022 at 10:11pm
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This guy had an airplane with magnetos (I think) and he got a tach to work. Here is the weblink http://www.bowersflybaby.com/tech/tach.html" rel="nofollow - http://www.bowersflybaby.com/tech/tach.html ------------- It is great being a disciple of Jesus! 1950 WD, 1957 D17...retired in Iowa, |
Posted By: HudCo
Date Posted: 12 Jan 2022 at 11:06pm
| can you get inside and hook it to the generating rotor side of the coil |
Posted By: WF owner
Date Posted: 13 Jan 2022 at 5:15am
| I have small engine tachometer/hour meters on my Honda inverter generators that we use for the RV. They have a battery for power and mount over the spark plug wire to get an impulse. I think one of these would work with a tactor magneto, but I have no idea how you would hook up the mag you already have. |
Posted By: B26240
Date Posted: 13 Jan 2022 at 6:12am
| The one we used on the saw mill has a small magnet that we super glued to the arbor shaft and the pickup head is mounted so as the shaft rotates the magnet passes within 1/4 inch of it. All this I think would fit inside the bell housing with magnet mounted to back side of pressure plate, or better yet on crankshaft pulley up front. |
Posted By: HudCo
Date Posted: 13 Jan 2022 at 9:40am
| we allready have dozons other tachs around the shop magnetic , ones you wrap the wire on the spark plug wire tiny tach ii we sell here. i just want to do somthing differant |