Orange Coast Chopper
- Thread starter BrettMavriK
- Start date
NunyaBidness
Active Member
BrettMavriK
New Member
Heheheh!
I'd be more than happy to build you one.
In fact, your 10 tooth bike chain sprocket is under Jim's Clutch Actuator Upgrade.
'BrettMavriK
I'd be more than happy to build you one.
In fact, your 10 tooth bike chain sprocket is under Jim's Clutch Actuator Upgrade.
'BrettMavriK
BrettMavriK
New Member
Workin' Out The Gremlins....
I posted this elsewhere, but the developments may help other people in their builds, so I'll post it here as well.
Been addressing the shifter/chain jump problems with the chopper.
First off, I welded in braces from the top rear wheel cage hoop to the bottom and put a top gusset on the pivot tabs. This rid all but a very slight sideways deflection in the pivot action so now it is under control. Next was the chain misalignment issue from the freewheel to the jack shaft sprocket that made the chain want to grind the sprocket and/or jump off completely when in 4th or 5th. I went over to Creative Engineering with an idea for the now dual swing arm chain tensioner/idlers. They needed to be able to push the chain over to be more inline with the jack shaft drive sprocket. The idlers came with an ABS "spur" sprocket that just weren't enough to hold the chain in position because they rode inside the chain. My idea was to have slotted idler wheels to capture the chain on the idler arms. They needed to be deep with a high enough wall so the chain couldn't ride out when they pushed on the sidewall of the chain.
So Jim and I worked toward a solution. Next he grabbed a couple pieces of black ABS plastic and cranked up the lathe after some careful measurement.
The result was awesome. Two ABS idler wheels that looked like they'd really control the chain well. Took it for a test run to see if they'd work. Oh yeah, I also put on a much better derailer.
Bingo!
All 5 gears up and down the dial, no grinding or chain jump. These wheels were the cure for my glitch. If anyone could use these wheels for their setup, give Jim a buzz. They would have a multitude of applications.
Here's some photos of the slotted idler wheels and my other mods'...
Big Thanks, Jimbo!
I posted this elsewhere, but the developments may help other people in their builds, so I'll post it here as well.
Been addressing the shifter/chain jump problems with the chopper.
First off, I welded in braces from the top rear wheel cage hoop to the bottom and put a top gusset on the pivot tabs. This rid all but a very slight sideways deflection in the pivot action so now it is under control. Next was the chain misalignment issue from the freewheel to the jack shaft sprocket that made the chain want to grind the sprocket and/or jump off completely when in 4th or 5th. I went over to Creative Engineering with an idea for the now dual swing arm chain tensioner/idlers. They needed to be able to push the chain over to be more inline with the jack shaft drive sprocket. The idlers came with an ABS "spur" sprocket that just weren't enough to hold the chain in position because they rode inside the chain. My idea was to have slotted idler wheels to capture the chain on the idler arms. They needed to be deep with a high enough wall so the chain couldn't ride out when they pushed on the sidewall of the chain.
So Jim and I worked toward a solution. Next he grabbed a couple pieces of black ABS plastic and cranked up the lathe after some careful measurement.
The result was awesome. Two ABS idler wheels that looked like they'd really control the chain well. Took it for a test run to see if they'd work. Oh yeah, I also put on a much better derailer.
Bingo!
All 5 gears up and down the dial, no grinding or chain jump. These wheels were the cure for my glitch. If anyone could use these wheels for their setup, give Jim a buzz. They would have a multitude of applications.
Here's some photos of the slotted idler wheels and my other mods'...
Big Thanks, Jimbo!
Attachments
MotorGator
New Member
The chopper is sweet Brett. What you have accomplished in the length of time.....is impressive.
Pictures from the first St. Pete run here:
Picasa Web Albums - Dave_Fla - St Pete_013109
I put them in Google Picasa for ease of viewing and sharing. Feel free to post comments on the pictures (anybody).
I am looking forward to the next Florida ride on 2/21/09.
MotorGator (Gainesville FL)
Pictures from the first St. Pete run here:
Picasa Web Albums - Dave_Fla - St Pete_013109
I put them in Google Picasa for ease of viewing and sharing. Feel free to post comments on the pictures (anybody).
I am looking forward to the next Florida ride on 2/21/09.
MotorGator (Gainesville FL)
BrettMavriK
New Member
Hey Thanks, man.
I think I have the kinks all out finally.
Now I am just tuning the expansion chamber exhaust and playing with gear ratios.
I can't wait to have a smoother ride this time out.
'BrettMavriK
I think I have the kinks all out finally.
Now I am just tuning the expansion chamber exhaust and playing with gear ratios.
I can't wait to have a smoother ride this time out.
'BrettMavriK
BrettMavriK
New Member
Just raised it a little further with a Springer Front Fork, a unrestricting hush exhaust that still rumbles, and all l.e.d. turn signals, brake and tail lights to go with the 3 watt headlight.
she rides like I'm on a hammock in the breeze at 44 mph
'BrettMavriK
she rides like I'm on a hammock in the breeze at 44 mph
'BrettMavriK
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BrettMavriK
New Member
The Orange Coast Chopper was my first try at a motorized bicycle.
I was a great exercise in creativity and mechanical ability for me.
My thinking back then was, this was a bicycle with a motor.
So I skewed things a bit and like a chopper it became; but still a bicycle.
I've evolved a little since then. My new thinking is, this a motorcycle
with pedals. And so this new build began.
I was a great exercise in creativity and mechanical ability for me.
My thinking back then was, this was a bicycle with a motor.
So I skewed things a bit and like a chopper it became; but still a bicycle.
I've evolved a little since then. My new thinking is, this a motorcycle
with pedals. And so this new build began.
Attachments
Last edited:
jose Pinto
Member
Re: Workin' Out The Gremlins....
Good Day, I congratulate the great project presented is very very good. I have only one doubt that much liked me explain that his friend, and most important of the issue as the engine starts? I think the dual wheel lets you start with live not crank? I am very grateful for the information, and if not too much to ask where you bought the dual freewheel
Good Day, I congratulate the great project presented is very very good. I have only one doubt that much liked me explain that his friend, and most important of the issue as the engine starts? I think the dual wheel lets you start with live not crank? I am very grateful for the information, and if not too much to ask where you bought the dual freewheel