Dedone trail reduce mods1100/ 1150gs

Discussion in 'Hacks' started by davebig, Apr 29, 2012.

  1. FR700

    FR700 Heckler ™©®

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    Thanks for the link, Dave. Much appreciated.

    My enduring memory of Smokey is his ingenious way of getting around the tank capacity ruling. He simply installed a filler that was the better part of twenty feet long :lol3

    He was a very fart smucker :nod


    Indeed.

    That'll make two slippery slopes for me to be wary of in the one morning :lol3


    .
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  2. We're Here

    We're Here Been here awhile

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    Brings back memories of Speed Weeks, in the day.
  3. claude

    claude Sidecar Jockey

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    I NEVER said that! I have said many times that the dedome idea was a good one. All it is doing is changing the steering axis angle. Not a bad thing. I also mentioned doing a steel replacement more than once. Please quit putting words in my mouth .... read my posts before you go insinuationg stuff or flat out saying things like " Claude wants me to to be quiet" which I never said. Strike two.
  4. davebig

    davebig Another Angry Hun !

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    Claude I'm sorry you feel that way and I'll email you my explanation before I add any more poorly thought out statements !
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  5. claude

    claude Sidecar Jockey

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    no problem .... just go back and read your posts
    Done,,I deleted some of my posts.
  6. davebig

    davebig Another Angry Hun !

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    Please read the title of the thread !
    It's about 1100/50 changing steering axis Dedome style trail reduction ,it's not about leading links or removing the telelever the only thing the thread it about is economical trail reduction that leaves the wheel base stock and is an alternative to fork forward trail reduction !
    I think one should not compare apples and oranges this costs a small amount of money compared to leading links or doing away with the telelever. This isn't about comparing them at all.
  7. davebig

    davebig Another Angry Hun !

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    Ok Claude I read for awhile and as you have cautioned moving the ball joint too much is going to get it and the A frame into different planes and they will bind, the way I see COBs that is what happened, if one took the spring off and moved it around there would be binding.
    [​IMG]
    Bad idea fork bridge and A frame at different angle, probably dangerous.

    [​IMG]
    Another view nose of A frame pointed down. Not good

    [​IMG]

    Mine ball joint and A frame relationship that same as stock, which is why I sent sent COB a different ball A frame and fork bridge.
  8. FR700

    FR700 Heckler ™©®

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    It still baffles me why everyone keeps using the stock ball joint, given that there are stronger, and viable, alternatives out there.
  9. davebig

    davebig Another Angry Hun !

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    Cheap and easy ? A tubular A frame could be built and an automotive racing ball joint used and maybe a good idea if converting to leading links.

    Leading link thread ! http://advrider.com/index.php?threads/leading-links.1031403/
  10. claude

    claude Sidecar Jockey

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    A tubular a frame could be built with the ball socket on an angle to compensate for the bind incurred when the offset of the bridge was more than is acceptable using stock parts. Think in extremes and this becomes more evident. The BMW ball is not the problem unless it is worked past it's range of motion then it potentially can be. It is all a combination of parts and how far you can go in reducing trail before issues can arise using a tele lever. I mentioned before about possibly angling the ball connection on the trail reducer and we are still considering that but there is really no need unles more trail reduction is desired. Ya just cant move the ball back and not think about the ramifications involved through full suspension travel. BTW... Look at BMW's HP-2...got a feeling that as time goes on we may see a shift back to conventional fork tubeS on adventure bikes from the factory anyhow.
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  11. claude

    claude Sidecar Jockey

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    So....have we explored the limits of trail reduction using stock parts on a tele lever usingr trail reducer off set as it is a conventional trail reducer? The dedome idea does help some as it changes the steering axis angle. I don't see that the wheelbase is an issue whether it be stock or not but no foul at all there either way. It all come down to the angle of the ball and how far we can go without incurring a bind This is true whether we are working with a modified tele lever type suspension or using the tel lever ball as a pivot point for a leading link. We will keep our trail reducer offset as it is as we have had no complaints as far as hard steering goes. Maybe at some point we will angle the ball area but I dunno. For anyone who is new to all this and is contemplating doing a GS based sidecar outfit I would suggest maybe just trying the front end in stock form for a while and then deciding if you want to reduce the trail later on. ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,Horrible salesman that I am LOL
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  12. claude

    claude Sidecar Jockey

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    The angry hun mentioned racing ball joints.....Go to a racing site (stock car products or speedway motors etc) and look at A Frame designs. You will see a lot of tubular a frames and others. Look how they are made. Especially the non tubular ones. A lot of effort in design is pointed toward the ball joint angle and the range of motions therein. Keep in mind that they have one 'out' that is not probably as feasible on our application and that is where the hinge point of the a frame is placed. We have a rod going through an engine block with the tele levers. Pretty much stuck with that although with some creative fab work it could be changed. THAT alone could open a new area of possibilities as far as range of motion vs ball bind goes. Do we want to go there? Probably not. We could, however, change a lot in more simple ways with a tubular tele lever and or a ball seat angle adjustment. Is it worth it? Bragging rights? Look what we did ? In any case ya heard it here first....OMG .LOL
  13. brstar

    brstar Been here awhile

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    Cmon Claude we know you can do it......
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  14. davebig

    davebig Another Angry Hun !

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    [​IMG]
    Look at the angle of the forks isn't it lovely :D
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  15. DRONE

    DRONE Dog Chauffeur

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    Agree, Dave. Once you do the DeDome mod, every GS that you see without one looks like it needs one!
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  16. DirtyDR

    DirtyDR Dana

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    I go with the leave it alone and just ride it with the stock front end idea. Seems to me the more people modify front ends the more troubles they have but what do I know I am just another cheap luddite.
  17. davebig

    davebig Another Angry Hun !

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    Jeeze a network guy calling himself a ludite ! I don't suppose it could be about oppositional defiance or could it ?
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  18. Mr. Cob

    Mr. Cob Howling "Mad", Adventurer

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    Howdy DaveBig,

    Well I am home from Moab, the parts you sent are sitting in the garage now I just have to get off my lazy arse and tear the rig apart and install the new stuff. I'll keep everyone posted, thanks for working with me on this.

    Dave
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  19. rg sw wa.

    rg sw wa. Long timer

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    Dave, (Mr. Cob) some might say, unless you post a pic of you in Moab it didn’t happen.
    Ron
  20. Mr. Cob

    Mr. Cob Howling "Mad", Adventurer

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    Well, I guess I better get off me arse and down load the photos so I can post them.