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OS graupner wankel 1-49

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Post  robot797 Tue Jun 11, 2019 10:44 am

I bought it
I cleaned it
and now I ran it
I might have plans for it but i am not sure (yet)
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Post  OVERLORD Tue Jun 11, 2019 11:24 am

That's great Peter. I hope you got that engine for a reasonably price. Those engines equipped the Graupner Middle Stick.
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Post  robot797 Tue Jun 11, 2019 11:33 am

well as you know it wasn't cheap
but I payed just a bit less then average for it (202 ex shipping)
https://www.ebay.com/itm/382970440531
(for the curious under us)
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Post  Jason_WI Tue Jun 11, 2019 1:42 pm

Nice!

I have 4 of these. I have one to restore yet. Usually new apex seal springs bring these back to life. The last parts one may not be salvageable. The bearing is out and it may have scored the side cover. I had to get it apart yet.

They are sure are thirsty though.

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Post  robot797 Tue Jun 11, 2019 1:49 pm

yea your right about wanting to drink
also 4 and non running
kind of disapointed in you Laughing
are all of them version 1?
because if you have parts left i might be interested
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Post  roddie Tue Jun 11, 2019 2:12 pm

robot797 wrote:yea your right about wanting to drink
also 4 and non running
kind of disapointed in you Laughing
are all of them version 1?
because if you have parts left i might be interested

Yes.. I've been told that the Wankel IC design is quite inefficient.. yet very powerful for the weight-savings.

I read JasonWIs' comment as having X1 as a non-runner..
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Post  robot797 Tue Jun 11, 2019 2:26 pm

i count atleast 2 non runners
one with broken apex seals one with broken bearings

as for size to power
i was kind of amazed at how small these engines are for a 4.9cc
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Post  Jason_WI Wed Jun 12, 2019 10:51 pm

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Post  Marleysky Fri Jun 14, 2019 11:20 am

Here is a linc to a video of a guy cleaning and reassembling a rotaty engine. i had read some where that these engines are next to impossible to tear down and reassemble correctly to get them to run. According to the post this one is for sale on e bay.    


https://m.youtube.com/watch?fbclid=IwAR3DlqgYAg_WQjxvMxc_bKA5etuRCcIzWeGk0eIkMtnTkOQX5sX42hGcydU&v=PJNPSZQyzok


Last edited by Marleysky on Fri Jun 14, 2019 11:25 am; edited 1 time in total (Reason for editing : Linc)
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Post  robot797 Fri Jun 14, 2019 12:48 pm

well thats weird because i think there easy to disasemble and then easy to get them back running
(already had mine disasembled)
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Post  Marleysky Sat Jun 15, 2019 1:41 pm

robot797 wrote:well thats weird because i think there easy to disasemble and then easy to get them back running
(already had mine disasembled)

I would guess you are right! After watching that video, it’s just a mater of using proper tools and assembling pieces in the correct sequence. I know I can strip and rebuild a Cox 049 BB or TD no problem, as I have plenty of experience. Never having disassembled a OS Wankel Rotary, I would be somewhat hesitant with out having watched the video !
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Post  robot797 Sat Jun 15, 2019 2:16 pm

I never thought about watching guides I just do Smile
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