drive train and gearing

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   Hi All, 
I have been contemplating a build, I have a frame (Colombo from ukraine) and most parts now, wheels brakes etc..  But I can't figure out what to do with the drive train.  

I have 29 a wheel at the back with a 42 to 11t cassette, at the front I have 2 oval rings, 36t and 50t.  But I don't know what derailleurs to go with, probably Shimano or SRAM as that would be compatible with my cogs.  But I then get lost with long and short gates, I struggle to find a 2 gear front derailleur as they seem to be for 10s or 11s only and I'm not sure if this makes a difference. I phoned a normal bike shop and they refused to give advice as they know nothing of recumbents, phoned a recumbent shop and they would also not provide advice and told me to check in with the Forums.  So here I am.  Any help will be greatly appreciated.  points to note, I'm now broke do to the frame so I'm trying to keep to a small budget now. 

Thanks for you help in advance. 

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Coolrunnings Members Profile Send Private Message Find Members Posts Add to Buddy List Visitor (new) Joined: 26 March 2021 Location: UK Status: Offline Points: 2	Post Options Post Reply Quote Coolrunnings Report Post Thanks(0) Quote Reply Topic: drive train and gearing Posted: 26 March 2021 at 3:14pm
	Hi All, I have been contemplating a build, I have a frame (Colombo from ukraine) and most parts now, wheels brakes etc.. But I can't figure out what to do with the drive train. I have 29 a wheel at the back with a 42 to 11t cassette, at the front I have 2 oval rings, 36t and 50t. But I don't know what derailleurs to go with, probably Shimano or SRAM as that would be compatible with my cogs. But I then get lost with long and short gates, I struggle to find a 2 gear front derailleur as they seem to be for 10s or 11s only and I'm not sure if this makes a difference. I phoned a normal bike shop and they refused to give advice as they know nothing of recumbents, phoned a recumbent shop and they would also not provide advice and told me to check in with the Forums. So here I am. Any help will be greatly appreciated. points to note, I'm now broke do to the frame so I'm trying to keep to a small budget now. Thanks for you help in advance.

russellbridge Members Profile Send Private Message Find Members Posts Add to Buddy List BHPC Member Joined: 21 October 2013 Location: Manchester Status: Offline Points: 843	Post Options Post Reply Quote russellbridge Report Post Thanks(1) Quote Reply Posted: 26 March 2021 at 11:13pm
	Is it for road or racing? For racing with a 29 wheel I run a 1x with a 53T and a 12-25 cassette. On my 29 road bike I’ve also gone 1x with a 42T and a 12 speed 11-34 cassette, and that gets me up all but the very steepest hills. And it’s cheap, and no faffing with front derailleurs.