How to save a frame.....

[baldbones]

I would like to run fatter tyres on an old frame I have had for years and don't want to give up
It will be used for farm tracks and towpaths as well as road

It is 73deg square with a 365mm length fork at 45 deg offset 56mm trail

In order to run 32-35mm tyres I need a new fork
I can get hold of one that is at 375mm BUT has a 50deg offset, allowing for the increased length
slackening the head angle this would mean the trail goes to 54mm.......

I have tried a 375mm with a 45deg fork on the road on this frame and it was noticeable but perfectly liveable

So should I

Give it a go

Get a new longer fork made with a 44deg offset

Get a Carl Strong Special Blend

Only the first two are realistic!
(Have discounted the 650b option....)

ta
Rick

[Craig Ryan]

If you've figured all this out, and it's right and will work for you, go the easy way. A bit lower trail might be nice to have at slow speeds on farm tracks. The question is how do the brakes in the back clear?

[SteveP]

yr just going to knock around on this thing, right?
id try the thing and if its good enough, its good.

[palincss]

Have you considered converting the bike to use 650B wheels? 650B wheeled bicycles :

[baldbones]

Steve
I think your right, it's just for knocking around on, so its worth ago with the 50deg fork
Craig
Nice spot. When I have the frame painted to match the flam red fork I'll get the bridge raised
I can squeeze a 28mm in there now so it shouldn't have to move that much
Pailncss
See the OP. I have looked into it. And don't thinks it's for me. Ta anyway

Thanks for your help Salonistas!
cheers
Rick

[niedz]

I would like to run fatter tyres on an old frame I have had for years and don't want to give up
It will be used for farm tracks and towpaths as well as road

It is 73deg square with a 365mm length fork at 45 deg offset 56mm trail

slackening the head angle this would mean the trail goes to 54mm.......

Rick

you are concerned about a 2mm change in trail? seriously?

[baldbones]

Seriously?
What do you think??
Of course I'm not serious
Curious maybe
Thanks for taking the time to post.
Seriously

[niedz]

touche! haha

[Dave Anderson]

Hi Rick,

I think that you will find that it rides fine.

Also...larger tires are going to bring the trail back up to pretty close to where it was with the original fork and race tires. Rear clearance is the biggest concern and if you can make that work, then I'd say go for it.

Dave