girder rake and trail prior to frame manufacture

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Builder52
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SELF INTRODUCTION: I worked on, bikes since I was 14, I progressed to cars when I hit the age of 16, now at 52 I find bikes more rewarding to build and with less space now to store my toys ( 3rd house, also the smallest garage) I use parts from anything that I can find to fit, my builds and am rapidly becoming a decent tig welder. Still I dont know everything and find it expensive to build from a catalog. so that is why I am here for the second time. I can only imagine what happened to my old post since I cant find them and very few of the old crew that used to be on here. maybe we can all come back on and share all that knowledge we acquired over the years of building? xp

girder rake and trail prior to frame manufacture

Post by Builder52 » Mon Dec 03, 2012 6:17 pm

Ok I have a girder (ebay purchase )that i have and would like to figure out the frame rake and trail. when I read some of the posts it seams the frame is already figured out but I have not made the frame yet.I am going to make a low neck height frame. now my question is : what measurements are needed to figure out the frame? I have looked at Nero's post and have taken down some calculations he has made, for his and will measure mine in inches and post my findings.

Builder52
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Posts: 22
Joined: Sun Dec 18, 2011 9:19 pm
SELF INTRODUCTION: I worked on, bikes since I was 14, I progressed to cars when I hit the age of 16, now at 52 I find bikes more rewarding to build and with less space now to store my toys ( 3rd house, also the smallest garage) I use parts from anything that I can find to fit, my builds and am rapidly becoming a decent tig welder. Still I dont know everything and find it expensive to build from a catalog. so that is why I am here for the second time. I can only imagine what happened to my old post since I cant find them and very few of the old crew that used to be on here. maybe we can all come back on and share all that knowledge we acquired over the years of building? xp

Re: girder rake and trail prior to frame manufacture

Post by Builder52 » Wed Dec 12, 2012 12:07 pm

hmmm ?

TattooLeeRoy
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SELF INTRODUCTION: Hi. I am LeeRoy, been biking for 30 yrs now. I ride an ironhead sportster, and (since I have a rider) am wanting to start a ground up build. I am really happy I found CBH, and want to thank you for info it contains. I look forward to the sportster hardtail article, and hope for a girder article
Location: San Antonio, TX
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Re: girder rake and trail prior to frame manufacture

Post by TattooLeeRoy » Wed Dec 12, 2012 2:01 pm

As you may have gathered, thats not an easy place to start. Do you know what frame it was supposed to fit?

Start with a front tire, block the assembled front end at the height you want your neck. Measure the rake and trail, figure out what to do from there.

Thats a pretty crude way to do things, but its all I can think of to help.
We can do anything, impossible just takes longer.

TattooLeeRoy
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Posts: 74
Joined: Thu Aug 09, 2012 12:59 am
SELF INTRODUCTION: Hi. I am LeeRoy, been biking for 30 yrs now. I ride an ironhead sportster, and (since I have a rider) am wanting to start a ground up build. I am really happy I found CBH, and want to thank you for info it contains. I look forward to the sportster hardtail article, and hope for a girder article
Location: San Antonio, TX
Contact:

Re: girder rake and trail prior to frame manufacture

Post by TattooLeeRoy » Wed Dec 12, 2012 2:04 pm

Don't forget to keep the girder links level for set-up,
We can do anything, impossible just takes longer.

hansgoudzwaard
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SELF INTRODUCTION: I was on the last board as bonustoolkit. I have changed that to my given name.
I started a project build there " File and Fit." I paln to continue that when I go back home in Dec. 2011. I first joined the board when Gary W had it in the year 2005. That was the time I really gained an interest in building chops. I have a long way to go, compared to some here.

Re: girder rake and trail prior to frame manufacture

Post by hansgoudzwaard » Wed Dec 12, 2012 2:28 pm

I know its not a girder but I believe this is what TattoLeeRroy means.

Image

Image

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curt
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SELF INTRODUCTION: hi everyone its me from the old bord hopeing to see everyone come here and all the newcomers . lets make this as good as the old one or even better . lookin foreward to seeing everyones projects continue and ill be continueing mine too
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Re: girder rake and trail prior to frame manufacture

Post by curt » Wed Dec 12, 2012 8:08 pm

thats a nice jig there
ever notice when you hit somethin or someone with a hammer you feel instantly better

hansgoudzwaard
Contributor
Posts: 786
Joined: Wed Oct 26, 2011 10:43 pm
SELF INTRODUCTION: I was on the last board as bonustoolkit. I have changed that to my given name.
I started a project build there " File and Fit." I paln to continue that when I go back home in Dec. 2011. I first joined the board when Gary W had it in the year 2005. That was the time I really gained an interest in building chops. I have a long way to go, compared to some here.

Re: girder rake and trail prior to frame manufacture

Post by hansgoudzwaard » Thu Dec 13, 2012 2:47 am

Those are build log pictures by BarefootJerry. He used to post on the previous site to Choppercompendium. I haven't seen him since then.

TattooLeeRoy
Lurker
Posts: 74
Joined: Thu Aug 09, 2012 12:59 am
SELF INTRODUCTION: Hi. I am LeeRoy, been biking for 30 yrs now. I ride an ironhead sportster, and (since I have a rider) am wanting to start a ground up build. I am really happy I found CBH, and want to thank you for info it contains. I look forward to the sportster hardtail article, and hope for a girder article
Location: San Antonio, TX
Contact:

Re: girder rake and trail prior to frame manufacture

Post by TattooLeeRoy » Thu Dec 13, 2012 10:46 am

Yes, thats the idea. Glad it made sense to someone.
We can do anything, impossible just takes longer.

Builder52
NewB
Posts: 22
Joined: Sun Dec 18, 2011 9:19 pm
SELF INTRODUCTION: I worked on, bikes since I was 14, I progressed to cars when I hit the age of 16, now at 52 I find bikes more rewarding to build and with less space now to store my toys ( 3rd house, also the smallest garage) I use parts from anything that I can find to fit, my builds and am rapidly becoming a decent tig welder. Still I dont know everything and find it expensive to build from a catalog. so that is why I am here for the second time. I can only imagine what happened to my old post since I cant find them and very few of the old crew that used to be on here. maybe we can all come back on and share all that knowledge we acquired over the years of building? xp

Re: girder rake and trail prior to frame manufacture

Post by Builder52 » Fri Feb 15, 2013 5:39 pm

TattooLeeRoy wrote:As you may have gathered, thats not an easy place to start. Do you know what frame it was supposed to fit?

Start with a front tire, block the assembled front end at the height you want your neck. Measure the rake and trail, figure out what to do from there.

Thats a pretty crude way to do things, but its all I can think of to help.
yes I gathered that, being from an automation background I have very little hesitation with doing things the hard way .

Builder52
NewB
Posts: 22
Joined: Sun Dec 18, 2011 9:19 pm
SELF INTRODUCTION: I worked on, bikes since I was 14, I progressed to cars when I hit the age of 16, now at 52 I find bikes more rewarding to build and with less space now to store my toys ( 3rd house, also the smallest garage) I use parts from anything that I can find to fit, my builds and am rapidly becoming a decent tig welder. Still I dont know everything and find it expensive to build from a catalog. so that is why I am here for the second time. I can only imagine what happened to my old post since I cant find them and very few of the old crew that used to be on here. maybe we can all come back on and share all that knowledge we acquired over the years of building? xp

Re: girder rake and trail prior to frame manufacture

Post by Builder52 » Fri Feb 15, 2013 5:40 pm

TattooLeeRoy wrote:Don't forget to keep the girder links level for set-up,
level with the ground and lower frame rails, or paralell :think:

Builder52
NewB
Posts: 22
Joined: Sun Dec 18, 2011 9:19 pm
SELF INTRODUCTION: I worked on, bikes since I was 14, I progressed to cars when I hit the age of 16, now at 52 I find bikes more rewarding to build and with less space now to store my toys ( 3rd house, also the smallest garage) I use parts from anything that I can find to fit, my builds and am rapidly becoming a decent tig welder. Still I dont know everything and find it expensive to build from a catalog. so that is why I am here for the second time. I can only imagine what happened to my old post since I cant find them and very few of the old crew that used to be on here. maybe we can all come back on and share all that knowledge we acquired over the years of building? xp

Re: girder rake and trail prior to frame manufacture

Post by Builder52 » Fri Feb 15, 2013 5:46 pm

hansgoudzwaard wrote:I know its not a girder but I believe this is what TattoLeeRroy means.

Image

Image

Y know I have a frame jig and have never used it that way, damn good Id re. with a girder it needs to be design with a 1" load drop when you hook it up to the frame, motor combo so it will sit right. might compress the front end and simulate the load to get an accurate measurement. :think:

Builder52
NewB
Posts: 22
Joined: Sun Dec 18, 2011 9:19 pm
SELF INTRODUCTION: I worked on, bikes since I was 14, I progressed to cars when I hit the age of 16, now at 52 I find bikes more rewarding to build and with less space now to store my toys ( 3rd house, also the smallest garage) I use parts from anything that I can find to fit, my builds and am rapidly becoming a decent tig welder. Still I dont know everything and find it expensive to build from a catalog. so that is why I am here for the second time. I can only imagine what happened to my old post since I cant find them and very few of the old crew that used to be on here. maybe we can all come back on and share all that knowledge we acquired over the years of building? xp

Re: girder rake and trail prior to frame manufacture

Post by Builder52 » Fri Feb 15, 2013 5:47 pm

thanks to all for replying and its def givin me some directions !!!

hansgoudzwaard
Contributor
Posts: 786
Joined: Wed Oct 26, 2011 10:43 pm
SELF INTRODUCTION: I was on the last board as bonustoolkit. I have changed that to my given name.
I started a project build there " File and Fit." I paln to continue that when I go back home in Dec. 2011. I first joined the board when Gary W had it in the year 2005. That was the time I really gained an interest in building chops. I have a long way to go, compared to some here.

Re: girder rake and trail prior to frame manufacture

Post by hansgoudzwaard » Sun Feb 17, 2013 1:10 pm

Builder52 wrote:[ might compress the front end and simulate the load to get an accurate measurement. :think:
You could let some air out of the tire to simulate(eq. to 1") if that was easier.

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