Quiet rack mount engine

Discussion in 'Rack Mounted Engines' started by s_beaudry, May 19, 2009.

  1. s_beaudry

    s_beaudry Member

    In anyone's opinion with using or hearing different engines for rack mount setups, what seems to be the quietest one out there/

    Is there one that is noticeably more quiet then others?

  2. Happy Valley

    Happy Valley Active Member

    Small 4 strokes no doubt, Robin 35 or Honda 35. Mitsubishi for 2 strokes.
  3. 5-7HEAVEN

    5-7HEAVEN Guest

    I have Subaru and Mitsubishi engines. Both are fairly quiet.

    A Mits with an ADA S1 expansion pipe is quieter.

    Add 39" of flexible exhaust tubing with the ADA silencer and it's even quieter.

    You've all heard Junior riding in the neighbor on a goped and snail pipe w/no muffler.:ack2:

    When you add 39" of tubing as I have, ya don't even need the muffler. It's pretty quiet that way. Performance doesn't seem to suffer, as "The Dragon Lady goes 39mph on the flats.:detective:
  4. s_beaudry

    s_beaudry Member

    Hello 5-7...

    Where would I find the silencer and the tubing??

    Thanks, Steve
  5. 5-7HEAVEN

    5-7HEAVEN Guest

    Last edited by a moderator: May 19, 2009
  6. bamabikeguy

    bamabikeguy Active Member

    I just got one of the new GEBES, RS 35 with the non-metal clutch housing.

    Not only is it lighter and quieter, it has more pep and giddyup !!

    I could hardly help it on the hills with the 7 speed test bike.
  7. SirJakesus

    SirJakesus Guest

    I can't hear much of a difference in noise from the TLE43 and the RS35 except the tone and at idle. Of course the rs is a deeper tone and more spaced whereas the TLE is higher pitched and more buzzy with an exhaust pulse every revolution. I would personally choose the TLE if mixing gas isn't a problem. Friction drives (and I'm assuming the GEBE belt drive) seem to be much quieter than chain drives because of their lack of metal-on-metal reduction gears and chain/sprocket noise.