The 2010 4-Stroke in-frame Build-Off!

GoldenMotor.com

wileydavis

New Member
Nov 22, 2010
45
0
0
Bozeman, MT
Silverbear: Thanks for the compliments and for taking the time to peruse the site. And I agree, spending one's time creatively, focusing on the interesting rather than the easy, is a good way to live.

And yes, those Fat Franks are wonderful tires. Those are my first pair, but I plan to use them more often in the future. Both comfortable, and easy rolling. As for the gearbox arrangement, it's fairly straightforward. Basically, it drives a left side chainring (a tandem crank) transferring power to the standard right side triple crank, which then delivers power to the rear wheel through a regular bicycle drivetrain.

The upside is a lot of powered gears, the downside is that whenever the motor is engaged, you have to pedal since the motor spins the cranks. It sounds scary, but between the staton gearbox and the gearing to the crank, the engine is geared down so that at max rpm, the cranks are only spinning at 100 rpm, and I usually ride with a pedal cadence of 90-100 rpm. That means that the engine is geared to work well in power-assist mode, with the rider's pedaling being well-matched to the engine output. That is, the engine can't spin the pedals any faster than i can pedal them, so engine and rider are always adding power to the system.

It works well, but sometimes I do wish I could freewheel the pedals while the engine did all the work. But then again, forced pedaling means I get ~300 mpg instead of the 120-150 people usually seem to get with the Eh035 engine.
 

wileydavis

New Member
Nov 22, 2010
45
0
0
Bozeman, MT
Wiley, if you get near me (N/E of Scottsdale), I would enjoy meeting, and maybe going for a ride :)
That would be fun. We'll be heading north toward sedona from Mesa on Saturday, the 18th. Probably wouldn't be too hard to swing through Scottsdale on our way out if you'll be around. Let me know.
 

Terry Blow

Dealer & Custom Builder
Oct 29, 2009
1,117
3
0
Surrey B.C Canada
Hi Every One
Here are 2 updated pictures of Tanner he is now sporting a brand new custom made 75 tooth Black sprocket.

SANY0232.jpg

SANY0233.jpg

Tanner is complete now I am going to take Tanner for a shake down run tomorrow and I should have some videos and more pics from this trip
Cheers
Terry
 

scotto-

Custom 4-Stroke Bike Builder
Jun 3, 2010
6,505
25
38
Ridin' inSane Diego, CA.
Hi every one I have a video of Tanner the video is called Tanner Explained here are the videos.

YouTube - Tanner Gas Powered Felt 1903 Explained

YouTube - Tanner Gas Powered Felt 1903 Explained Part 2

I am going to do performance videos of Tanner I have the new 75 tooth sprocket then I will do a flat out speed run and then a 14% Grade Hill climb.
I hope you all enjoy the videos
Cheers from Blow By U
Terry
I'm guessing your flat out speed will be approx. 25mph and I'm guessing your 14% grade hill climb too be about the same.....25mph.

The rear sproket is ridiculously large....it looks like a Whizzer sheavelaff
 

azbill

Active Member
May 18, 2008
3,358
5
38
64
Fountain Hills, Arizona
I am interested in how the 75T does,,,
it is only 3 teeth bigger than my 72 and I can still hit 30mph
(mind you I never stay there for long, but she really seems to enjoy around 27mph ;))
 
Hi,

Bill's final ratio is 18.5 x 1 [geared to pull a trailer & climb hills]. 32 MPH at redline, 27 MPH @ 6500 RPMs, 25 MPH = 6000 RPMs.

Terry's final is 20.7 X 1 [geared to climb the side of a building]. 29 MPH at redline, 27 MPH @ 7250 RPMs, 25 MPH @ 6700 RPMs. If the primary drive belt were changed to the AX series the numbers would look as follows......30.7 MPH @ redline, 27 MPH @ 6850 RPMs, and 6400 RPMs = 25 MPH.

Stock QMatic is 15.45 X 1 [geared for cruising speeds]. 5000 RPMs = 25 MPH, 6000 RPMs = 30 MPH, 7000 RPMs = 35 MPH. and redline = 39 MPH.

Have fun,
 

Terry Blow

Dealer & Custom Builder
Oct 29, 2009
1,117
3
0
Surrey B.C Canada
Hi Every One
I just got back from a 3 hour shake down and everything is in perfect running order. I managed to get some video and I took the GPS with me and it turns out that Quenton has it almost bang on. I Got a top flat ground speed of 29.7 MPH and a comfortable cruising speed of 23 MPH and it is geared just right for my area. I did have a few places where I still had to pedal because it was to steep if it was not for the big sprocket I would have had to walk and push my bike up the hills. Some people don't like the big sprocket but I have had people that where looking at it close up and they thought it looked just right. I will try to post the videos later on
Cheers
Terry
 

scotto-

Custom 4-Stroke Bike Builder
Jun 3, 2010
6,505
25
38
Ridin' inSane Diego, CA.
I would have too agree....Quentons calc's are fairly precise. Our ride in San Diego yesterday is reflected here on my GPS....we rode 40miles, and I rode to and from the event....22 miles round trip for a total of 62 miles. My top speed was 38.1 mph and my tach reading reflected that at about 7640rpm iirc.

This is with a 49cc HS running a straight pipe with small silencer, stock EZM Q-matic with a 56t rear sprocket

 
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fundreamer1

New Member
Dec 6, 2010
180
0
0
Oklahoma
Hello,
I found this site by accident when I was looking for info on bike frames for engines. I bought an old bike from a flea market and then I bought one of the miniature motorcycles with a 4 stroke 50cc with a 4 speed tranny and decided to put the motor on the bicycle. I don't know about this bike build off, or if I could get it done by the deadline. I have to first get my welder fixed before I can modify the frame to accept the motor.
The miniature motorcycle is fun, but I can't legally drive it on the road. It is supposed to be able to go about 50mph as it is, (I haven't tried to see) With the tires being much taller on the bicycle I think it would go to fast to be safe if one wanted to go there. lol Anyway, glad to have found others that like the same hobby I do.
If anyone has already tried to do a build similar to this I would be happy to hear, and hopefully learn from their experience.
xct2
 

scotto-

Custom 4-Stroke Bike Builder
Jun 3, 2010
6,505
25
38
Ridin' inSane Diego, CA.
Hello,
I found this site by accident when I was looking for info on bike frames for engines. I bought an old bike from a flea market and then I bought one of the miniature motorcycles with a 4 stroke 50cc with a 4 speed tranny and decided to put the motor on the bicycle. I don't know about this bike build off, or if I could get it done by the deadline. I have to first get my welder fixed before I can modify the frame to accept the motor.
The miniature motorcycle is fun, but I can't legally drive it on the road. It is supposed to be able to go about 50mph as it is, (I haven't tried to see) With the tires being much taller on the bicycle I think it would go to fast to be safe if one wanted to go there. lol Anyway, glad to have found others that like the same hobby I do.
If anyone has already tried to do a build similar to this I would be happy to hear, and hopefully learn from their experience.
xct2
Welcome to the forum! Now fix your welder and start building.....times a wasting. And yes...you have found others that like these things....a lot!
 
Hi Everyone,

Only a few days left to enter your bike build for 2010. The judging process will start soon, and the award plaques are ready to send to the winners.

We at EZM wish to thank everyone for entering the 4-stroke in frame competition, and wish all a Merry Christmas and a Happy New Year.


Have fun,
 

Terry Blow

Dealer & Custom Builder
Oct 29, 2009
1,117
3
0
Surrey B.C Canada
Hi All
Here is the video of Tanner that I promised I lost a lot of the video due to my poor batteries. Everything was shot from my handle bar camera mount I stopped center point of the bridge and show a view of my area you can clearly see the terrain and just how hilly it is you can not go on a ride with out having to climb some hills many are steep enough that you have to pedal as well as full throttle. I hope a few people enjoy the video.

YouTube - Gas powered bicycle Felt 1903 Tanner on first shake down run

Thank you and Merry Christmas from Blow By U
Cheers
Terry
 

scotto-

Custom 4-Stroke Bike Builder
Jun 3, 2010
6,505
25
38
Ridin' inSane Diego, CA.
Re: EZM's 2010 4-Stroke in-frame Build-Off!/Deadline Extended!

Hi people, due to a rash of requests, the deadline for the EZM contest is officially extended!!! It seems that a bunch of bikes are not yet completed, and so we are listening to that need!

I will show one of the Winner's Plaques tonite, and the others as we go along. We will announce the new deadline dates soon!!!

Sayyyy.... whose bike do you suppose was the model for this award???

Mike
Is that my bike Mike???

laff
 
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scotto-

Custom 4-Stroke Bike Builder
Jun 3, 2010
6,505
25
38
Ridin' inSane Diego, CA.
Well scotto I don't think the judges are aloud to have an entry and I have two. That was just my two cents worth :p
Just what does it take for me to give you a hard time Terry? I'll raise you a pennies worth.....making it just my three cents worthlaff

I'm pretty sure we don't know who the judges are just yet, except it's not you or melaff
 
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scotto-

Custom 4-Stroke Bike Builder
Jun 3, 2010
6,505
25
38
Ridin' inSane Diego, CA.
Scotto I think we need to tip a few together sometime it could kinda fun
Yeah, just git yer butt down here to socal again and thaw out.....this is the beer meca now and the motorized bikes reign supreme.....cheers bro!


sorry....I know, off topic. I'm just trying to sway the judges......whom ever they are!laff
 
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