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Old 09-11-2008, 11:57 PM   #21
ca180
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Default Re: Boardtrack dimensions???

Oh, and anyone else notice that merkel looks like its running a copper frame? They were some brave bastards!
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Old 09-12-2008, 12:38 AM   #22
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Default Re: Boardtrack dimensions???

Your in the same boat as me dude I have been wanting to do this with my bro for a while so we could make a dirt track in our field. But the engine is the only thing holding me back. What I would recomend is finding a good side view of a bike you like, maybe try ebay under board track theres some good pics you just dont find under google. Then figure the wheels in the pic are 26 in bike wheels then take the gap inbetween the wheels in a % of the 26 in wheel to find the wheel base, Then keep doing that stuff from one point then double check it with a new point when finished. Theres probably different methods but thats how I tryed mine.
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Old 09-12-2008, 01:41 AM   #23
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Default Re: Boardtrack dimensions???

Ok so I found a pic of a bike I liked. Printed it out and traced over it. I measured the wheels I want to use for the project. They are 26 inch bike wheels. Then I measured the wheels on my tracing. They are 3 inches. So take 26 and divide that by 3. You should get 8.6 repeating or Im an idiot. Now any measurment you need for your project you go back to your tracing. Run the rule across the rail (point A to point B) take your measurment in inches and multiply your answer by 8.6 repeating. Should work right? not perfect but its better then nothing.
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Old 09-12-2008, 03:20 AM   #24
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Default Re: Boardtrack dimensions???

Check out Billy's Henderson...

http://www.choppersinc.com/html/bikes.asp?bikeid=60

"Billy fabricated the 1929 Harley-Davidson DJ rigid frame, 36 degree rake, minus 5 inch stretch. 1919 Indian Front End. Henderson 23" Clincher front & rear wheels. Firestone 23" front & rear racing tires."
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Old 09-13-2008, 10:21 PM   #25
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Default Re: Boardtrack dimensions???

Sigh - look at the picture of "The Merkel" It's lower than a doorknob! That is a miniature (I'm guessing 20 inch wheels), hense the copper tube frame! I think it's cool Where did the picture come from? In my 60 some years I've NEVER seen a "rider" with a copper tube frame! (Way too soft) (copper painted maybe)! I think it's a model. But I love it!
Davo
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Old 09-13-2008, 11:15 PM   #26
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Default Re: Boardtrack dimensions???

Quote:
Originally Posted by beezerbum View Post
Sigh - look at the picture of "The Merkel" It's lower than a doorknob! That is a miniature (I'm guessing 20 inch wheels)
i am thinking smaller than that!

but that would be a sweet bike. if you need any help, let me know.
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Old 09-14-2008, 01:04 AM   #27
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Default Re: Boardtrack dimensions???

apparently it aint a legit bike, here's the ad for it on the original site I got the pic from... what a bummer!

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1913 Flying Merkel, Salesmen Sample, Boardtrack Racer built by a pattern maker. $5,500 or trade for ???
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Old 09-14-2008, 10:19 AM   #28
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Default Re: Boardtrack dimensions???

It's still COOL! I'd like one myself!
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Old 09-14-2008, 08:58 PM   #29
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Default Re: Boardtrack dimensions???

I've been collecting ideas about cobbling up a board tracker to build on the cheap...the only way. I've heard that a Chinese company has purchased a bunch of 1960's - 1970's Honda 4 stroke tooling and are exporting a complete 175 with gearbox for around 600 bucks, they're showing up on E-gay. Not completely compliant with the JJ guidelines but it looks like it would work.
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Old 09-15-2008, 12:33 AM   #30
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Default Re: Boardtrack dimensions???

Unfortunately I'm thinkin about the same thing. I don't have the dough for old OHV twins...... or the resources to build one like that guy who made the excelsior.... XR80 looks like a possible option... Wish I could convert some of these air compressor pumps into a running motor. They definately look the part
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Old 09-15-2008, 01:40 AM   #31
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Default Re: Boardtrack dimensions???

ive been toying with this idea for years. the board track bikes have always been, to me, something ive always wanted to make for myself.

ive thought about one using an ultra cheap chinese replacement motor like this..

http://cgi.ebay.com/ebaymotors/2008-...mZ220279871846
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Old 09-15-2008, 02:51 AM   #32
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Default Re: Boardtrack dimensions???

why not use a english unit single? bsa c11,c15,b50 starfire 250 etc
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Old 09-15-2008, 07:06 PM   #33
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Default Re: Boardtrack dimensions???

I did a quick look on the "net" for info about turning an old compressor into an engine - - (having been a mechanic all my life, I've never heard of it being done, and can't find anything about it ) They'd look cool on a non-running model though. Anybody have info on makin' a compressor into an engine??? (wrong materials, cams,cooling etc!) I'm thinking it would be "a Job!"
Davo
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Old 09-15-2008, 10:24 PM   #34
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Default Re: Boardtrack dimensions???

You might try egaying these and see what you come up with, you might find something cheaper . . .
This Lifan racing engine will fit the following bikes:
  • CM200
  • CRF150
  • CRF230
  • SL175
  • TLR200
  • TR200
  • XL175
  • XL185
  • XL200
  • XR185
  • XR200
  • SL100
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Old 09-15-2008, 11:03 PM   #35
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Default Re: Boardtrack dimensions???

So far the xl125 Honda is looking like a good option.... if I can find one and get some decent dimensions on it



Check out this build by Odgie over in the U.K..... I swear, everytime I check back there that dude has another bad ass project goin!

http://www1.snapfish.com/welcomep
Then you login using this email address: [email protected]
and this password: BSAB40
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Old 09-15-2008, 11:16 PM   #36
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Default Re: Boardtrack dimensions???

forgive my ignorance, but how fast would these little Lifan and such engines actually go with 12ish hp and 9ish ft lbs? and thats an honest question, i really dont know anything about them.
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Old 09-16-2008, 12:21 AM   #37
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Default Re: Boardtrack dimensions???

Thats a good question.. but...how fast do you want to go on bicycle style 26 inch wheels and tires?
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Old 09-16-2008, 01:03 AM   #38
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Default Re: Boardtrack dimensions???

Think about going 50 on a mountain bike? would you really want to do that? Cause I bet its in that range maybe a tit bit higher with those big 26 inch wheels. Not like speed is an issue Im just saying dont worry about being under powered it would be alot of fun!
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Old 09-16-2008, 02:34 AM   #39
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Default Re: Boardtrack dimensions???

does anyone make a 26 or 27 inch wheel for motorcycles?

ive been messing with this thing for awhile. its fun, but knowing that im doing 40-50mph on cruiser bike wheels and tires is a little scary.



a full board frame with a less ridiculous motor would be ideal...
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Old 09-16-2008, 04:23 AM   #40
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Default Re: Boardtrack dimensions???

Quote:
Originally Posted by ca180 View Post
So far the xl125 Honda is looking like a good option.... if I can find one and get some decent dimensions on it
Check out this build by Odgie over in the U.K..... I swear, everytime I check back there that dude has another bad ass project goin!
this is his site - the man is a legend

http://www.odgie.com/
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