my mini chopper
- Thread starter mckutzy
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mckutzy
Well-known member
hey thanks man.
I will try, if not tonight tomorrow sometime.
If a project like this is in mind, I would suggest using a 4 or 6 bolt rim instead as these are much easier to build a hub for than a 5 bolt, as the lay out is simple. Could be even a square for the 4 bolt hub.
I have a 72 tooth sprocket on mine and a full size disc brake from an import motorcycle about 13"dia.
Any other measurement while im at it.
I will try, if not tonight tomorrow sometime.
If a project like this is in mind, I would suggest using a 4 or 6 bolt rim instead as these are much easier to build a hub for than a 5 bolt, as the lay out is simple. Could be even a square for the 4 bolt hub.
I have a 72 tooth sprocket on mine and a full size disc brake from an import motorcycle about 13"dia.
Any other measurement while im at it.
mckutzy
Well-known member
Sorry dude, been a while. I got into an auto accident about a month ago so I wasnt able to go out in the shop lately. feeling kinda hurt....
Went out in the shop today feeling a bit better, well enough I could sorta move the bike out into the alley to take a few pics.
I have more if more specific parts need info on.
Went out in the shop today feeling a bit better, well enough I could sorta move the bike out into the alley to take a few pics.
I have more if more specific parts need info on.
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mckutzy
Well-known member
Just an update to keep my thread going, sadly im still between houses right now, but I got alot of stuff stockpiled for the up coming season. there is a few show Im going to go to, so hopefully I'll get this on and running soon.
I bought some stuff over the last while, Including one of those DBR manual actuated clutches, Locking Brake/clutch lever, Header wrap.
Im also going to make a kick starter for the motor like the one described by
Tufdog on YouTube, using a gearing mech and the OEM recoil mech to do the start.
I also bought some sprockets, chain, a pulley, need some shafting and might need new/different bearings depending on the mounting situation.
I am thinking I'll have to modify the intake as it will give more space for the kickstarter unit.
http://www.youtube.com/watch?v=2LsyhjhWgLc
http://www.youtube.com/watch?v=fXD68Q9fLpE
I bought some stuff over the last while, Including one of those DBR manual actuated clutches, Locking Brake/clutch lever, Header wrap.
Im also going to make a kick starter for the motor like the one described by
Tufdog on YouTube, using a gearing mech and the OEM recoil mech to do the start.
I also bought some sprockets, chain, a pulley, need some shafting and might need new/different bearings depending on the mounting situation.
I am thinking I'll have to modify the intake as it will give more space for the kickstarter unit.
http://www.youtube.com/watch?v=2LsyhjhWgLc
http://www.youtube.com/watch?v=fXD68Q9fLpE
mckutzy
Well-known member
Hey guys, just wanted to bump my thread again, just realized I have been here for 6 years now. Learned alot and am glad to check back on a regular basis for new and exciting posts.
Hopefully in the next couple of months I'll be getting back into my own place again and I'll be able to do the upgrades I was talking previously.
Thank all for looking.
Hopefully in the next couple of months I'll be getting back into my own place again and I'll be able to do the upgrades I was talking previously.
Thank all for looking.
Thanks. I look forward to the update
mckutzy
Well-known member
Hey guys, a little progress.
Been several months now since I got my DBR1 racing clutch, and late last night/ earlier today, I finally put this clutch on. What an effort, but worth it.
Alignment on my jackshaft was off about an inch to the clutch sprocket. I just needed to loosen all the collars, pillow blocks, sprockets and move over the shaft, and install in reverse......
Well, since this is a rat bike, it accommodates the usual patina, aged and otherwise.... Rusted look. Along with that keyword rust, there is the usual problems of rust. Things being slightly or severely corroded .
No severe corrosion, but a bit of seized parts, expected..... Unfortunately.
The shaft could not be moved at all nor the collars locking the shaft, in situ.
I had to remove the whole assembly, a complete disassembly of all the parts(bearings were about the only unscathed parts), a polish on the contact parts of the shaft.
Re assembly went well, aswell as the clutch install. Only thing with the clutch is a couple of the bolts were too short. I had the ones need as they held my other clutch(the cent) and chain guard on.
Been several months now since I got my DBR1 racing clutch, and late last night/ earlier today, I finally put this clutch on. What an effort, but worth it.
Alignment on my jackshaft was off about an inch to the clutch sprocket. I just needed to loosen all the collars, pillow blocks, sprockets and move over the shaft, and install in reverse......
Well, since this is a rat bike, it accommodates the usual patina, aged and otherwise.... Rusted look. Along with that keyword rust, there is the usual problems of rust. Things being slightly or severely corroded .
No severe corrosion, but a bit of seized parts, expected..... Unfortunately.
The shaft could not be moved at all nor the collars locking the shaft, in situ.
I had to remove the whole assembly, a complete disassembly of all the parts(bearings were about the only unscathed parts), a polish on the contact parts of the shaft.
Re assembly went well, aswell as the clutch install. Only thing with the clutch is a couple of the bolts were too short. I had the ones need as they held my other clutch(the cent) and chain guard on.
mckutzy
Well-known member
After I got everthing all bolted and tightened up, I went for a quick ride around. Definatly need to learn a manual bike now. First ride went alright, got a feel for the clutch and how thing are going. The second ride went really choppy.
I had mentioned in previous post that my carb/jetting is a little wonky, or atleast it needs tuning. Having a funky carb and needing to learn a manual clutch made the ride a stop and go.
I did however managed to bump start the motor several time by just dropping the clutch and momentum causing to start, which I thought was a cool thing.
Over all things were alright, was worth the money I spent on it.
Next issue is the carb, causing to stall out on rapid throttle engagment.
I had mentioned in previous post that my carb/jetting is a little wonky, or atleast it needs tuning. Having a funky carb and needing to learn a manual clutch made the ride a stop and go.
I did however managed to bump start the motor several time by just dropping the clutch and momentum causing to start, which I thought was a cool thing.
Over all things were alright, was worth the money I spent on it.
Next issue is the carb, causing to stall out on rapid throttle engagment.
Thanks for the update! I love the idea of these clutches.
mckutzy
Well-known member
I have done some drilling of the jets. I had an Honda #80 jet, kept drilling and running till I got to a #61 bit, wich makes the jet about some where between #96 and #101(according to AGK). Plug gapped at ~.040
Plug is a even black like sooty, dry.
I am not able to take it off of the half way choke position(actually a little less than half).
Air filter is the same as above as is the exhaust.
Idle is adjusted to just where is runs nice.
Why can't I crank the throttle with out it dieing, in stead of having to ramp it up then let it rip?
Do I need to restrict the air?
I'm really stuck, got another show to goto tomorow.
Plug is a even black like sooty, dry.
I am not able to take it off of the half way choke position(actually a little less than half).
Air filter is the same as above as is the exhaust.
Idle is adjusted to just where is runs nice.
Why can't I crank the throttle with out it dieing, in stead of having to ramp it up then let it rip?
Do I need to restrict the air?
I'm really stuck, got another show to goto tomorow.
mckutzy
Well-known member
Ok, this is a bit of a bump,
I got a new sprocket welded up yesterday, this will change my gear ratio back to 6:1. A 28t on the left side.
Hopefully this will help the rpm curve as not to be so steep off the start.
I still got this carb stalling issue. Should I somehow restrict the incoming air flow, or something else?
I'd really like to keep the air intake I've got, as I think it fits the overall theme of the bike, but if this is the real culprit then I'll change it.
I'm just having a hard time understanding it seams like if I have more air than others with a high flow air filter, with stock parts?
Edit:
Ok, I still have similar symptoms but I did managed to take a pic of the plug, when the bike is running good, it is a NGK R, bpr6es, gapped at .040.
I got a new sprocket welded up yesterday, this will change my gear ratio back to 6:1. A 28t on the left side.
Hopefully this will help the rpm curve as not to be so steep off the start.
I still got this carb stalling issue. Should I somehow restrict the incoming air flow, or something else?
I'd really like to keep the air intake I've got, as I think it fits the overall theme of the bike, but if this is the real culprit then I'll change it.
I'm just having a hard time understanding it seams like if I have more air than others with a high flow air filter, with stock parts?
Edit:
Ok, I still have similar symptoms but I did managed to take a pic of the plug, when the bike is running good, it is a NGK R, bpr6es, gapped at .040.
mckutzy
Well-known member
So I finally got the chain together and on the bike. A bit of a pain, was 1 link to big and didn't have a proper chain tool. Had to cut and break a link off. It worked and didn't effect the next link.
Went for a quick run around the block and had a great time. That 6:1 ratio worked great, It defiantly needs more gears, but I could actually ride the bike and with no stalling issues.
Power wise, it isn't lacking, but takeoff isn't really fast. Overall, this is great for what it is.
I'm also going to another show tomorrow, and this time I can drive the whole strip to my position and not worry about potentially burning my clutch or stalling out too much.
Went for a quick run around the block and had a great time. That 6:1 ratio worked great, It defiantly needs more gears, but I could actually ride the bike and with no stalling issues.
Power wise, it isn't lacking, but takeoff isn't really fast. Overall, this is great for what it is.
I'm also going to another show tomorrow, and this time I can drive the whole strip to my position and not worry about potentially burning my clutch or stalling out too much.
redlinemotorsportts
Professional mower nut
Just read the hole thread- love the work man! The little things like the wired nuts, rod cage around the chain is awesome. love the look of it, keep it up!
kertis38
New member
Wow is that so great work!#
mckutzy
Well-known member
Thanks guy, I just wish I had a place to ride it more often and Id tell more things on riding and such.
outcrydrummer
KART ART
Ok, this is a bit of a bump,
I got a new sprocket welded up yesterday, this will change my gear ratio back to 6:1. A 28t on the left side.
Hopefully this will help the rpm curve as not to be so steep off the start.
I still got this carb stalling issue. Should I somehow restrict the incoming air flow, or something else?
I'd really like to keep the air intake I've got, as I think it fits the overall theme of the bike, but if this is the real culprit then I'll change it.
I'm just having a hard time understanding it seams like if I have more air than others with a high flow air filter, with stock parts?
Edit:
Ok, I still have similar symptoms but I did managed to take a pic of the plug, when the bike is running good, it is a NGK R, bpr6es, gapped at .040.
That looks real real rich. Your either over jetted or, like you suspect, are restricting air flow through your air filter design. I would try and redesign the air intake before cutting back jetting and losing power.
firemanjim
Just kartin' around....
Short intake, facing forward....... Maybe even get a bit of "ram air" effect....... 
mckutzy
Well-known member
I don't know what I'm going to do with the intake as of yet. It does run fine, idles nice with out hesitation, I can sorta lay on the gas with it stalling(adjusting the choke to a certain spot). When I get a chance next, in the spring, I gues I'll do more with it then.
Big thing why I haven't used a typical filter, is it is right in the way of my leg. I'll most Likely knock it off, as I do touch the intake a bit when maneuvering about by foot. They stick out quite a bit.
Big thing why I haven't used a typical filter, is it is right in the way of my leg. I'll most Likely knock it off, as I do touch the intake a bit when maneuvering about by foot. They stick out quite a bit.
firemanjim
Just kartin' around....
You got a few minutes..... Go try this real quick.....
Cut the intake hose in half. Put the filter back on. Tie it up so it's under the seat, out of your way.....
I think the length of hose is what's chipping away at your performance......
Cut the intake hose in half. Put the filter back on. Tie it up so it's under the seat, out of your way.....
I think the length of hose is what's chipping away at your performance......
justinlogue5_0
Can't leave it Stock!
Everything is great with this whole build except....your rotten neighbor wanting to call the cops on ya.
Keep up the good work
Keep up the good work
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