Motorized bicycle build
- Thread starter ValleyCenter ACE
- Start date
- Tags bicycle board track racer build harley motorized
Soooo finally I got those pictures of the intake and exhaust porting! It took me forever I know! Been busy with Work, life, the usual excuses for not posting! So this was all done by hand with a dremel and some sandpaper!
Intake
Exhaust
Now theses aren't done per say, but they'll have to due for now.
Now I also made the new intake manifold, well for the most part! It's alot better then the original plastic one! This piece took forever to get right though, but I had alot of patience! To get the tabs for the bolts right I would have to go out of my garage, well walk through two two car bays, and make a tack weld to hold the tab then walk back to my desk cool the piece off and test fit it and then find out it was off by an 1/8 I would break off the tab, re mark and walk back!! Did that like 6 times! But hey I had alot of patience.
Here is the other piece to the manifold being held up, I will cut the piece to the correct length when the engine is mounted on the frame, then weld it together!
I also got some steel rims that I will be using! They are really heavy duty and should work out fine. I'm not to excited to drill the 12 holes that will be necessary for mounting the rear pulley, I'll explain later!
Some welding on the frame! These are terrible welds! ! I did then quickly, so I'll go over them again. That's the neat thing about oxy-acetylene welding is that you can go over a weld a few times reheat it and smoothing it out also ensuring that the weld penetrated deep enough!
A new pedal hub
Some strengthening of the rear axle mount!
Intake
Exhaust
Now theses aren't done per say, but they'll have to due for now.
Now I also made the new intake manifold, well for the most part! It's alot better then the original plastic one! This piece took forever to get right though, but I had alot of patience! To get the tabs for the bolts right I would have to go out of my garage, well walk through two two car bays, and make a tack weld to hold the tab then walk back to my desk cool the piece off and test fit it and then find out it was off by an 1/8 I would break off the tab, re mark and walk back!! Did that like 6 times! But hey I had alot of patience.
Here is the other piece to the manifold being held up, I will cut the piece to the correct length when the engine is mounted on the frame, then weld it together!
I also got some steel rims that I will be using! They are really heavy duty and should work out fine. I'm not to excited to drill the 12 holes that will be necessary for mounting the rear pulley, I'll explain later!
Some welding on the frame! These are terrible welds! ! I did then quickly, so I'll go over them again. That's the neat thing about oxy-acetylene welding is that you can go over a weld a few times reheat it and smoothing it out also ensuring that the weld penetrated deep enough!
A new pedal hub
Some strengthening of the rear axle mount!
So I finally decided that it had to be done but It will be necessary to cut off the rear forks and then add in new pipe to extended the frame another 4in's! And I thought the people that told me to get another frame were crazy! Ha! I saw one of the beach cruiser frames at a store awhile back and I see why it would have been better to start with one of those even if you had to cut out the "curve pipe"! Hahahahah!! But I'll continue on! I'm not going to give up over some little stuff!! No pictures sorry!
TANKSAREUS
The Simplex Frame is so simple why don't you just make ONE ??
I'm pretty sure if you found one it would be extremely over priced!
That's if you wanted to have another project!
So update'in
Sorry Harley fans the bike can no longer be a Harley replica, because.... well because the rear forks need to be extended another 4 in resulting in a very weird looking bike! So I'm going to cut new ground and make a new design! And I'm still waiting on this stinken welding table! I Need my father to help me because he's a much much better wood worker then me! So that's what's been holding me up!!
The Simplex Frame is so simple why don't you just make ONE ??
I'm pretty sure if you found one it would be extremely over priced!
That's if you wanted to have another project!
So update'in
Sorry Harley fans the bike can no longer be a Harley replica, because.... well because the rear forks need to be extended another 4 in resulting in a very weird looking bike! So I'm going to cut new ground and make a new design! And I'm still waiting on this stinken welding table! I Need my father to help me because he's a much much better wood worker then me! So that's what's been holding me up!!
So here is the new set of forks!! Yes yes there a little hacked but under the conditions I though they should work just fine!! And hey using bio-degradable material should be good for the environment! Right?
Ha! No it's a wheel stand to re-lace on the new steel rims! It's worked really good so far, along with the screw driver and pliers I have been using. Sorry no "correct" tools being used here!
Then this is where the new Welding bench will be! It'll be fabricated on location!
So this new bench will give me the room I need Lord willing! And also no more pesky soot blowing onto my fathers photo booth and table, hence the new table and location!
Ha! No it's a wheel stand to re-lace on the new steel rims! It's worked really good so far, along with the screw driver and pliers I have been using. Sorry no "correct" tools being used here!
Then this is where the new Welding bench will be! It'll be fabricated on location!
So this new bench will give me the room I need Lord willing! And also no more pesky soot blowing onto my fathers photo booth and table, hence the new table and location!
So still working on the project had a major hick up! I went to start on the front forks; I was cutting the neck from the old forks, which are useless, and my torch ran out of oxygen so it wasn't cutting correctly, so I figured that out quickly. And it's kidd'a a pain to have them refilled, but as I was walking away the bottles for the torch toppled over breaking both hoses and messing up a valve gauge (which I fixed later, I believe there fixed ) But that was not a happy sit. And it was all because I was stupid and put the dolly with the bottles on uneven ground! So It's a 35 dollar fix! For new hoses! No big deal but still it could have been avoided!
Still changing my design for the lower end of the bike! It going to be difficult to try and fit the 6in pulley correctly! But I thing I actually need to buy the pulley to be able to put my hands on it to truly figure out how the lower section is going to be! And still figuring if I'm going to make it with a "Quick Removable" lower section! Might be a bit to ambitious! But was thinking it might be a good idea!
Still changing my design for the lower end of the bike! It going to be difficult to try and fit the 6in pulley correctly! But I thing I actually need to buy the pulley to be able to put my hands on it to truly figure out how the lower section is going to be! And still figuring if I'm going to make it with a "Quick Removable" lower section! Might be a bit to ambitious! But was thinking it might be a good idea!
Ruff Cycles // Real Custom Bikes check these guys out.
If you're interested, I have a set of Motobecane 50V rims & tires. The chrome is flaky, they're a little rusty, and the tires are weather checked, but they're solid, and the drum brakes are good (the moped ran & drove before it just finally rotted out).
I originally was going to strip them & paint them for a high-speed motorized bike project... but unfortunately, that plan has been waylaid due to financial reasons.
I originally was going to strip them & paint them for a high-speed motorized bike project... but unfortunately, that plan has been waylaid due to financial reasons.
I will never give up!! I have wanted to do this for a very long time! - deejaaa
Those bicycles are really cool looking I like the faux tanks that are mounted on some of them! And the tires and rims they are sell where giving me some ideas about making a hotrod style bike! Thanks I'll be back to that site!- vwmopar
Sorry no pictures; because nothing has been happening. Waiting to finally finish my table and to refill my tanks so I can start welding my frame! But I"ll post pictures When I get a chance! But.. actually I have been gathering parts .. so something has been happening!!
Those bicycles are really cool looking I like the faux tanks that are mounted on some of them! And the tires and rims they are sell where giving me some ideas about making a hotrod style bike! Thanks I'll be back to that site!- vwmopar
Sorry no pictures; because nothing has been happening. Waiting to finally finish my table and to refill my tanks so I can start welding my frame! But I"ll post pictures When I get a chance! But.. actually I have been gathering parts .. so something has been happening!!
Here's a very rough drawing of my motorized bicycle design! And this is the design I have been playing around with.. and I really can't decided how it's going to work.. I think I actually have to get my hands on the pulleys to decide how there going to fit!
So the lower section I'm planning on having it removable so that the whole drive train can be removed and serviced easily! So.. this is what I'm doing with the design!!
So the lower section I'm planning on having it removable so that the whole drive train can be removed and serviced easily! So.. this is what I'm doing with the design!!
I like your ambition ACE! Not sure if it's in the budget- but a decent wire fed welder will make your fabrication life 100 times easier. The problem with torching the hell out of a structural frame is it gets brittle. I only know this because I started with oxy ace and tranitioned over to MIG/Flux core, mid build. The absolute best investment ever. Especially handy for cut-to-fit building because you can do easy tacks for placement.
Paticus--Yeah I know ! I was testing some welds I have made! And I wasn't to impressed with there strength! So I'll have to make really fatty welds and Hope for the Best Which will result in a heavy bike! Very old welders have told me it will work! And I trust them There biggest words of advice was "get a really welder punk"........ Hahhahh No Just kidding they said "build up the welds "(fatty welds) And it should be fine. It's a light duty frame so Lord willing I will have no problems! And a electric welder is out of the question the garage it's hooked up to the power grind yet, just using extension cords from the house and no 220 outlets near by either.
jdogg - That is probably the finally frame design unless something doesn't work out! Yes it's ambitious but it's not anything new, many old bikes in the good old days (when people actually designed good products and had very many innovative and news ideas) there were bikes that had engines that could be taken completely off of the bike with the tool kit that it came with. So I wanted to do something similar, and I don't like how hard it is to remove the engine from my Murray or Baja bikes,... it's just a pain.
Updates!!!
Welding table nearly finished... Finally ...needs the top screwed on and have it sealed and the final touches. I want to finish this very badly so I can finally start working again. So I'll update with pictures once there is something to show.
jdogg - That is probably the finally frame design unless something doesn't work out! Yes it's ambitious but it's not anything new, many old bikes in the good old days (when people actually designed good products and had very many innovative and news ideas) there were bikes that had engines that could be taken completely off of the bike with the tool kit that it came with. So I wanted to do something similar, and I don't like how hard it is to remove the engine from my Murray or Baja bikes,... it's just a pain.
Updates!!!
Welding table nearly finished... Finally ...needs the top screwed on and have it sealed and the final touches. I want to finish this very badly so I can finally start working again. So I'll update with pictures once there is something to show.
I have been wondering how I'm going to get more horse power out of my engine? It's a 3.5hp Briggs and Stratton ... but I believe I have an exactly the same engine but it is rated at 4hp. Now I have ported the heads and going to make a bigger air in take and exhaust. But what about the carb?? What's a good replacement carb that looks a little vintage but is not like impossible to get, also it has to be fully adjustable?
Any suggestions??
Any suggestions??