Engine Mounts, tension arms, cover

Discussion in 'Rack Mounted Engines' started by bamabikeguy, Jun 15, 2007.

  1. bamabikeguy

    bamabikeguy Active Member

    Adding a second spring to the tension arm arose because of the tricycle.

    We all know the deep gorge 1/4 mile south of my driveway.....


    I have the Mountain 11 tooth gear on it, so it climbs just fine, but I have to coast down hill, and the damn tension arm jumped off on every descent.

    UNTIL I added a MF 18 2 1/2 inch spring. Problem solved.


    Even if you do the SPOKERING snap on perfectly, have very little tension arm jump, if you are screaming through a yellow light at 30 plus miles per hour, have a change of heart when you see the fuzz and let off the throttle quick, it sometimes jumps off the belt.

    The bottom two pix are Rocinante. I added a spring and whoola, not even a hop or pop off that belt ever since.

    Note three or five other things on that Denver bike engine mount. On the cover holding post, I have a spare wingnut, underneath, and on top I added a 3/8 inch rubber flat faucet washer, to shock absorb for the plastic cover.

    I also put a square of black duct tape on the inside of the covers, another "crack" preventative.

    On Phillips bike:


    You can barely see how I took a sharp knife, and whittled a little teardrop shape where the arm sticks out of the slot. On the Florida run the cover cracked, then slid and interfered with the tension arm movement.

    Problem solved.

    So, here is what you need:


    #18 springs 2 and a half inches long and a two pairs of needlenoses to stretch the ends.

    flat washers

    black duct tape.

    Some other topic mentioned "clutch slipping". Bet it was wear on the driveshaft grooves, too much rapid starting and/or lazy uphilling.

    I had one "rust" and freeze up on me, I could NOT pull it out of the engine.

    Occasionally grease those grooves and slip the engine back on. Put a dab on EVERYTIME you take off the engine.

    Also, for youngsters and newbies. See all that road grime up on Rocinante's Mount?


    If you are not careful, it will build up and guck up the motions.

    Dismantling it to clean it out is a 20 minute job.

    OR "mu beta" add a little oil occasionally.

    WD 40 is no good, use sewing machine oil or 3-1 oil like in the picture, a few drops will get the arm moving freely.

  2. larymor

    larymor Guest

    Originally Posted by larymor View Post
    Well...Julia from GEBE sent me a replacement cover for my engine/clutch ( the plastic one ) and it is no way gonna fit without some major modifications..it looks a bit thicker in the area where it mounts to the bolt which is where they break.I'm gonna measure it and see if it is thicker. But a lotta good it will do me if I cant get it on! Dont they try them on a kit there b4 they ship to see if it fits or not....and she wants me to pay $7 shipping for it! Like it was my fault it broke so I need to pay for something that is under their warranty? This is my first problem with them...they are always nice when you call and try to be helpful.....but I think they need to step out of the warehouse with some of their kits...go to walmart and buy a bike..take it home and put it on the bike...if they can...and ride it 50 miles....so they can get the FULL EXPERIENCE some of us have...gas tank wont fill without putting the rear wheel in a tree.....spokes breaking...belts slipping...gotta cut the rear support to mount it on the frame cause a bolts in the way or the axle is too short.....There...my first big rant is over. If it wasn't for all you guys out there helping, encouraging...and listening....We are definately a Band of Brothers.
  3. bamabikeguy

    bamabikeguy Active Member

    The only way to make sense of this interaction is to cut paste the 3 responses from me and Jim H. In case one thread or the other rolls off the screen. :arrow:

    Jim H