Felt MP

Discussion in 'General Questions' started by grezm0nkey, Jul 18, 2008.

  1. grezm0nkey

    grezm0nkey Member

    hey all, been searching in here for a few weeks getting info, ideas, etc.

    Ive never had a motored bicycle and not sure of the operation. forgive the ignorance. on a 4 stroke motor must it be started before you ride or can it be started during the ride by the pedaling.

    i dont have a ride yet. i leaning very hard towards felt cruisers. mostly the MP. i read the posts on the felt MP in here but they seem to have fallen from posting. has anyone completed a MP frame? there was talk on sealing the tank and i was wondering if anyone tried those ideas. i know theres one who remarks he did the 1903, but didnt say how.

    I was thinking to include disc brakes on my build, when im done gathering info, but i am not sure if it would fit. i read alot about having good brakes. not sure if discs would be the answer. the hub type looks great, but not sure of the stopping power.

    just briefly heres where i stand. i would like to commute on this bike to work. one way is 14 miles, so ballpark 30 miles a day. i want a comfortable ride, so a cruiser came to mind. i wanted it to be reliable, and from reading a 4 stroke would be ideal. i was amry years back, so i lean toward the MP, but a 1903 would be nice too. what sold me was seeing the sand/tan USMC bike and sidecar in the picture gallery. i like the looks of a in-frame vs a rack mount.

    thanks in advance for reading and any comments, and links.


  2. astring

    astring Member

    A lot of people here suggest less expensive bikes, but the Felt cruisers are really cool.
  3. HoughMade

    HoughMade Guest

    On the 4 stroke issue- all the kits I know of right now are pull start and are not started by pedaling.

    As for sealing the tank, I heard it was done using chemical resistant expoxies as welding or brazing would peal the paint.

    Good luck!
  4. grezm0nkey

    grezm0nkey Member

    ASTRING : i could go with a less expensive frame or make. it really is the look of felt. i dont mind spending a few more for something i want. not that i have a money tree growing, i just want it.

    Houghmade: i been tracking that. have same ideas to seal the tank with epoxies. i was thinking using aluminum tape and sealing holes then lining inside with epoxy, but i wouldnt be certain till i got a frame in my hands and looked at the whole thing.

    i called felt earlier asking about that canvass frame, the blank cruiser frame you can finish yourself. they are out.
  5. sjackson

    sjackson Member

    You can get to the holes in the frame from the seat and headset tubes. I think one user on here just sealed it up with JB Weld, and then used tank sealer after that. I wouldn't use aluminum tape though. It breaks too easily.

    If I could get my hands on a felt bike I'd love to do a conversion. I don't think they'll fit four stroke engines though. The top bar is a little lower than a normal cruiser just because of it's size.
  6. grezm0nkey

    grezm0nkey Member

    sjackson : i saw pics in here from earth mechanic fitting a honda gxh50 in a felt v10.


    looks like a great install, not sure if felt frames are different at all. i do remember reading that there was different sizes tho, plus steel and aluminum tanks from year to year.

    JB weld would probably work best pluging the holes. was thinking alum tape for ease of install. like i said i wouldnt know how hard it would be till i have a frame in hand. would you be able to reach the holes from the seat post and head with your finger???? maybe drilling the fill and petcock holes first so you can reach in with wires and long tools to help mold the putty in place????
  7. grezm0nkey

    grezm0nkey Member

    been looking online for a Felt MP, found a place in san diego


    from what i read, its a bit cheaper if u picked up yourself. i havent called them to ask any questions yet. they show stock on website. does anyone have input on them? anyone bought from them? i guess i could drive there and pick up for the price. it would be an hours drive to save a hundred, what would u do?

  8. grezm0nkey

    grezm0nkey Member

    just placed order on MP and expect it in next week. i asked to have it left alone and i would put it together myself. that would give me a chance to look over the frame and seal it up. now i need to start looking for all the little pieces and the motor.
  9. sjackson

    sjackson Member

  10. grezm0nkey

    grezm0nkey Member

    hate to ask, i read a post in here and it had a link to a felt MP frame all cut up. he cut it up to seal the holes in the frame. i cant seem to find it again. can someone post a reply link? TIA.
  11. ocscully

    ocscully Member

    Felt MP link

    http://www.oroville-eternal-riders.org/motorbike.htm I believe this is the link you are asking for. The Bike shown was built by member itskeith up in Chico CA. It is possible to seal up the tank with epoxy products. Member HBLOCAL has done several Felt bikes this way and seems to be willing to share his method. You might want to try PMing him. His bike is the Felt 1903 linked too in several threads here.

    One other note the MP bike itskeith used was an aluminum frame. I believe the version of the MP you are getting is the steel frame. For some reason Felt switched the MP to the Steel Frame. The volume of the Top Tube/Tank is smaller/less on the steel frames.

    Last edited: Jul 23, 2008
  12. hellbilly

    hellbilly Guest

    grezmonkey: I have seen these MP bikes and they are sweet. I did a couple of Nirve choppers and used the big top tube for the tank. You should be able to remove the fork and get to the weld hole in the head tube. As for the back of the tank, any place that another frame component attaches you will find another hole to fill. These holes allow for heat and gases to escape during the welding process. You can cover with tape (headtube) or use a very small amount of expansion foam to temporarily plug the holes. Once you drill and tap threads for your fill, vent and petcock fittings, you can seal these holes permanently with some fuel proof RC aircraft epoxy. I used a medium sized syringe from Menard's with a piece of clear flexible tubing through the holes for the fittings. There is a fairly detailed post by Blaze if you can find it on here. Good luck. I think you will have a VERY nice motoredbicycle. Peace!
  13. grezm0nkey

    grezm0nkey Member

    thx scully, thx billy

    I wanted those pics to see the seat post area. i noticed the tank kinda wraps around the seatpost and didnt know what it looked like inside. was thinking jb weld all this time to seal it up, but wasnt sure how i would manage to reach in and plug it up. didnt even think of expanding foam. THANK YOU!!!

    i dont mind the smaller tank capacity. Id like to find some saddle bags later and hang them from the rear rack. leather, canvas dont know yet. maybe even metal, it would be something to keep in line with the theme. Im sure i would have a squirt bottle of gas in there just in case.
  14. ocscully

    ocscully Member

    AMMO Boxes would be fitting with the theme. Try your local Army Surplus Store.

  15. hellbilly

    hellbilly Guest

    A small amount of expansion foam would seal the hole TEMPORARILY till the epoxy sets up. It is not fuel proof! Just wanted to be clear on that. Peace!
  16. grezm0nkey

    grezm0nkey Member

  17. grezm0nkey

    grezm0nkey Member

  18. hotrodlincoln

    hotrodlincoln Member

    I say go for the felt bike. I am in the process of getting one myself, they are awesome!

    HBLOCAL Guest

    Felt Bikes

    Glad to hear someone else is going to use a Felt Bike w/a motor the frame does not have to be cut up in order to seal the holes on the frame.
    I will go over the process I have used on many Felt bikes very briefly

    yes i have done the MP bike first I disassemble the entire bike then wrap the frame twice with ten mil plastic to protect it from accidents.
    I then drill the fill hole and the petcock hole where I would like them placed after that I tap the holes so I can install the valve and nipple I use for filling the tank do not install until after the tank has been sealed.
    On the head tube you can use pieces of blue masking tape on your fingers and reach inside the head tube and cover the two holes from the inside the third hole you can only get to from inside of the tank your filler hole is how you get to it put a piece of tape on a screw driver or something small enough to fit into your filler hole and gently cover the hole it is very hard to see the hole use a flash light .
    Once this is done hang the frame w/the head tube down you will need to go to pep boys and get some J.B. weld you will need the "INDUSTRO-PAC" take the J.B. weld and leave it in th sun for twenty minutes so it will heat up and become plyable then mix up half of the tubes and put in a small hypo-dermic injection tube and then fill up the inside of the tank w/ J.B. weld roll it slighly back and forth to complete cover the holes inside check for leaks let dry over night.
    The hole in the seat tube is a little harder to do but I have done many and so can you again put a small piece of tape over the hole on the inside w/ your finger get some fine steel wool and twist into small rolls and insert into petcock hole try and get it to both sides arournd set post as the back of the wish bone on the frame is also not completely welded and will leak down to the rear axle hanger.
    Use a small piece of hard wire or a bent screw driver to pack the steel wool in place very important that u spend some time doing this to insure that the J.B. weld you are going to inject does not leak thru to the bottom hanger.
    Once this is done hang the frame w/the head tube up and again heat up the J.B. weld and inject from the petcock hole use a flash light to see how much u are injecting keep the J.B. weld about and 1/8" below the petcock threads and keep the threds clean .
    Keep ckecking to see if the J.b. weld is at the level you left it if it goes down that means you have a leak thu the steel wool and you will have to re-pac if it does not go down then you have sealed the tank successfully and are ready for the next step,but before you move on do one final check by filling the tank w/water if it does not leak out or go down you are ready.

    You will have to go to a motorcycle dealer and get some tank sealer called " CREME" it is a three step process which consists of degreaser acid wash and the actual sealer itself.
    follow all instructions on how to use the sealer this is why you wrap the frame in plastic this stuff is very toxic and will ruin paint etc.when you are using the acid etch do not plug off the tank completely as this will cause the pressure to build and it will blow out all of the acid and you will have one big mess.
    After you successfully gone thru all of the steps let it dry for one week before putting any fuel in the tank after that you will be ready to assemble the rest of the bike as for the filler tube on the top of the frame I use a threaded 1/2" brass nipple w/a cap on once this is installed I will paint on a thin line of J.B.weld around the nbottom of the threads to ensure there are no leaks there.
    This is how I do it in nut shell and it has worked very well and until I find a easier method this is how I will do it I would be more than Happy to help you out any way I can my cell # is 949 -632-0640 fell free to call Thanks HBLOCAL
  20. hotrodlincoln

    hotrodlincoln Member

    Thanks for the diy guide it's a huge help! I think it's so much better to have the top tube as the tank instead of that kit tank strapped over it. I saw a new post about using Felt bikes so I will also pass this info on.
    Thanks again,