Sachs Wankel

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Sachs Man
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Sachs Wankel

#1 Post by Sachs Man » Thu Nov 22, 2018 12:51 pm

Hi all,
Just sign up on this site to lean more about rotary engines, i have a couple of Sachs KM 24s which i want to get them running. They both have stuck apex seals, so will soak the rotary in some ATF for a couple of days.

Cheers,
Mark.
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Sachs Man
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Re: Sachs Wankel

#2 Post by Sachs Man » Sun Nov 25, 2018 1:33 pm

I finish cleaning some of the parts today, i broke the end seal and corner end spring when trying to get them out :cry: :cry: I did get the apex seal without breaking it :D So will order some new parts from the US which will take about 2 weeks to get here, so not much i can do at the moment.
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Re: Sachs Wankel

#3 Post by Rota_Motor » Sun Nov 25, 2018 2:15 pm

I think the bridge port you point out is actually the intake port, the intake charge is drawn through one plate with the carby on, then through the middle of the rotor to cool it and lubricate the bearings, then transfers across the back of the bridge and into that port.

Hence the side seal trace being completely outside of the big main port looking openings.
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Re: Sachs Wankel

#4 Post by Sachs Man » Sat Jan 05, 2019 2:15 pm

The parts have arrived and have started the rebuild, clean all the carbon off the seals and springs. I installed seals and springs on one side of the rotor. Anyone know how the corner seals are place :?: I have place one of the corner seals with the bent side facing down on the rotor and the second seal with the bent side facing up, might be a be hard to see in the photos.
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Re: Sachs Wankel

#5 Post by bumpstart » Sat Jan 05, 2019 4:23 pm

flat side of corner seal will be against the engine plate


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Sachs Man
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Re: Sachs Wankel

#6 Post by Sachs Man » Sat Jan 05, 2019 8:51 pm

bumpstart wrote:
Sat Jan 05, 2019 4:23 pm
flat side of corner seal will be against the engine plate
Thanks bumpstart, i found the sachs manual it's saying the convex sides must be touching to ensure maximum spring compression.



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Re: Sachs Wankel

#7 Post by Sachs Man » Sun Jan 06, 2019 6:13 pm

OK got the engine back together and tried to start it no go :( I replace the coil and got it to start but can't get it run. So i will replace the points,condenser , replace the fuel pump and check the timing.
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Re: Sachs Wankel

#8 Post by Sachs Man » Mon Jan 07, 2019 2:07 pm

I had a good read on the manual last night and did a test on the fuel pump,as what the manual was saying to do. I knew the pump was a bit dodgy the vale was sticking and these units are sealed so you can not repair them so replace with a new pump and BINGO shes up and running :D :D No need to replace the points, condenser shes running real sweet :) Got a short vid of the engine at idle will make a better vid once i tidy up the wring.

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Re: Sachs Wankel

#9 Post by Sachs Man » Fri Jan 11, 2019 5:59 pm

I tidy up the wiring and hook up a kill switch, as you can see in this vid there is fuel dripping out of the over flow pipe when at idle.I'm not show why this is happening :?: :?:




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