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Title: Front end rake Post by: kapri on May 18, 2015, 09:44:58 PM What's the correct method to cut and rake a frame headstock?
Title: Re: Front end rake Post by: Manky Monkey on May 20, 2015, 05:35:22 PM Not sure there's a correct method Kev. I've always cut the top tube just behind the headstock & taken a wedge shaped slice out, then warmed the top of the downtubes & leant on the top of the yokes until the gap closes up. Then welded it up & added new triangular gussets under the headstock.
Whatcha building now? Title: Re: Front end rake Post by: kapri on May 21, 2015, 08:24:28 AM Just going through it all in my head right now Andy , just to make sure it's do-able ;)
Title: Re: Front end rake Post by: saex69 on May 23, 2015, 11:44:49 AM There are a number of way's to do it like Manky say's you could just take a wedge out or you could cut the whole lot off and make a new front end which will also tidy it up, you can chop the top tube and heat the bottom down tube's and bend the head stock back a little. hope that helps
Title: Re: Front end rake Post by: Stix on May 23, 2015, 04:27:26 PM On my auto honda 400 I just cut the top of the frame, it is a pressed steel spine in two parts took a pie slice out of it lined it all back up and welded it, then all I had to do was make some deeper front engine mounts and bolt them on, the motor is part of the frame, jobs a goo dun, three inch longer fork stanchions and that gave a bit of hight on the front, could have gone with just under two to keep it level.
Stix Title: Re: Front end rake Post by: terry t on May 23, 2015, 06:07:19 PM Or get raked yokes made ;)
Title: Re: Front end rake Post by: kapri on May 23, 2015, 06:17:36 PM On my auto honda 400 I just cut the top of the frame, it is a pressed steel spine in two parts took a pie slice out of it lined it all back up and welded it, then all I had to do was make some deeper front engine mounts and bolt them on, the motor is part of the frame, jobs a goo dun, three inch longer fork stanchions and that gave a bit of hight on the front, could have gone with just under two to keep it level. Stix It's a CX I'm thinking about John! Title: Re: Front end rake Post by: merv on May 23, 2015, 06:20:48 PM Or get raked yokes made ;) Sorry Terry, this is a new one on me can you explain Title: Re: Front end rake Post by: terry t on May 23, 2015, 06:30:27 PM Well Merv I will try and explain :o
to reduce the trail you need the alter the rake. there are a few ways of doing this. build a frame with the correct trail you want or cut the head stock like been disused fit leading link forks, have an ezi steer set up like on my trike or buy pre set raked triple trees/ yokes like these http://www.ebay.co.uk/itm/6-DEGREE-RAKED-TRIPLE-TREES-23-HARLEY-BAGGER-STREET-GLIDE-TOURING-1997-2013-/391128212271?hash=item5b110ee32f what one you do decide to use will still need some thought and calculations to get the trail right Title: Re: Front end rake Post by: Stix on May 23, 2015, 07:09:32 PM On my auto honda 400 I just cut the top of the frame, it is a pressed steel spine in two parts took a pie slice out of it lined it all back up and welded it, then all I had to do was make some deeper front engine mounts and bolt them on, the motor is part of the frame, jobs a goo dun, three inch longer fork stanchions and that gave a bit of hight on the front, could have gone with just under two to keep it level. Stix It's a CX I'm thinking about John! If the frame is the same then about an hour to get it cut and re welded, and if the motor is a stressed member then just make up some new engine plates and bolt em on. If you want I will pop down and take a look but it ain't rocket science. John Title: Re: Front end rake Post by: merv on May 23, 2015, 09:18:29 PM Thanks for the explanation Terry
Title: Re: Front end rake Post by: kapri on May 23, 2015, 09:32:18 PM On my auto honda 400 I just cut the top of the frame, it is a pressed steel spine in two parts took a pie slice out of it lined it all back up and welded it, then all I had to do was make some deeper front engine mounts and bolt them on, the motor is part of the frame, jobs a goo dun, three inch longer fork stanchions and that gave a bit of hight on the front, could have gone with just under two to keep it level. Stix It's a CX I'm thinking about John! If the frame is the same then about an hour to get it cut and re welded, and if the motor is a stressed member then just make up some new engine plates and bolt em on. If you want I will pop down and take a look but it ain't rocket science. John There's a strengthening plate on the headstock I was going to take this off, cut and rake behind it and then put another plate on. What I didn't know was whether butt welds were considered acceptable or it needed an insert into both bits of tube first. Title: Re: Front end rake Post by: Stix on May 23, 2015, 10:03:45 PM I take it you are using a mig, if so leave a gap of 3mm all round the slot and fill it with weld use a pretty hot setting so you actually burn into the parent metal if concerned put a run over the top making sure it burns into the first weld
John |