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Post Info TOPIC: Post USD Fork Conversion Reviews Please People


DTR Legend

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Post USD Fork Conversion Reviews Please People
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Best mod i've done to my DT yet.

Brilliantly stiff suspension, improves the handling and braking feeling 10 fold compared to standard.

Brilliant for stoppies too.

It is a big job and ball ache, but it all depends on what forks you've got. It's luck of the draw in most cases.

If you're lucky like calcumface, you won't have to do much modding. On the other hand you may need to get a wheel spindle made up, which is threaded on one side and a sleeve made to slide over it for a perfect secure fit, as if it's made to be like that from factory.

The turning circle is also better/the same, this was one of my worries doing the upgrade because on the difference in side to side with the steering, but all is well.

I'd reccomend it to anyone who has standard forks, they're shŪt in comparison.

Just make sure you shop around and get a good set of forks/yolkes that aren't battered/pitted.

Best case scenario you will just have to have an extension made for the headstock + a brake caliper bracket, which is cheap and easily done.

To fit my big husky forks i had to have the yolke bored out to fit the DT stem and have a wheel spindle/sleeve made to fit the excel supermoto rims.

In theory you'd think it would be a lot easier if you could get the bearings, but the sized beaings you need do not exist they're the odd size of odd sizes, so don't even bother trying.

All in all i'm super happy, because i know full well it's a perfect job and fitment with no shortcuts or bodges made to make them fit.



-- Edited by Energized on Wednesday 12th of June 2013 07:50:46 PM

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Cheers lads, a lot to think about.. I can't wait to get started! biggrin†My YZ rear end should be here tomorrow though, along with new bearings for the yz front wheel, so i'll be playing about with them first. biggrin

I will be keeping it enduro Liam, can't be missing out on all that off road fun!



-- Edited by fused420 on Wednesday 12th of June 2013 11:08:30 PM

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Getting ever closer to ordering the†parts to do my own USD conversion, I phoned yam uk to try and find out what part are interchangeable between the DT and YZ...The technician couldn't help me that much, other then†to tell me that the part number for the brake discs on the†YZ†didn't change between 90-01, and that every other part involved changed part no. near enough every year. He said that I would have to go on trial and error, but also all of the forks are the same size (except comp ones)†, so should fit any year yokes. So going on this im presuming that the same calipers were used throughout the 90s?† If any anyone can confirm this, that would be great.

He also said that it wouldn't work very well, as the clearances between the tank and†radiator etc is smaller on the†DT then it is on the YZ... So I thought I would start this thread to find out if it was worth it? Was there a lot of work involved? Best method, pressed stem, collar, etc?†And how has it affected the†performance for the good? ..and the bad?

Thanks



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Go on A J Sutton site parts list Fused, on the item pull up page on right hand side shows compatable parts with other Yams

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Absolutely wicked bruv. Better rebound. Stiffer suspension and better handling. But to be fair that might also be down to the supermoto wheels.

Ask enny how easy it was.

It does mean a bit of fooking about mate.

My way more than others but thats what its all about. I'd definitely go the bearing cup route again. You raise the height of the handle bars and the overall height. You'll want a jack up kit to go with it. Otherwise your dt will look a bit silly.

It's a nice conversion but not for everyone. For road use you probably won't notice much. For me it was purely an asthetics thing. Theres nothing wrong with the original setup to be fair. I just wanted to supermoto my dt and thougbt i might as well USD it.

Its expensive. Can take time and a bit of trial and error.

Best to get everything off the same bike and year matey.

So if you buy forks from a yz250 2003 make sure you get the spindle and yokes as well.

Then you can either press the stem out of the dt yokes. And the yz yokes. Press the dt stem into the yz using a collar to compensate the diameters and press on new bearings and voila. That should be you done.

Or feck about making bearing cups and use the exisiting yz stem like me. Although my bottom bearing didn't reach the race. So i've had to press that bearing off. Put a 2mm spacer behind it and press a nea bearing on.

Still easy thougb. Just more hassle.

Nice ride height though. Longer yokes.

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Are you keeping your dt enduro set up or going supermoto?

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DTR Legend

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Good lad!!! We'll be the special ones with the only dt's in enduro trim rocking USD forks!! What you mean yz rear end? You got the swing arm and shock? I've got a yzf rear fender I need to fit just need a tail tidy!!

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I hadn't even noticed that most doing the usd conversion were sumo, but now you mention it.. lol

I should have this arriving at some point today, which im told will bolt straight on:

It's from an 88-92 yz, so†should be interesting!. I was looking in to doing this after being inspired by Gadget and†FunkeyMunkeyDavid here:

http://dt125r.activeboard.com/t52121804/i-think-yz-hubs-fit-the-dtr-been-checking-numbers-etc-check-/



-- Edited by fused420 on Thursday 13th of June 2013 08:31:29 AM

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It won't rust though, and its different..



-- Edited by fused420 on Thursday 13th of June 2013 08:40:40 AM

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And it will match the yz front end that I will be fitting! biggrinbiggrinbiggrin 



-- Edited by fused420 on Thursday 13th of June 2013 08:42:28 AM

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You might be under estimating the work necessary.

Might*

Theres more to it than oh the rear wheel will fit therefore everything will line up on a totally different bike.

The rear wheel on an rs fits between a dt swingarm. Didn't mean it lined up though.


Ended up with wheels like this

† † |
† † † † † They represent wheels and how they sat on the bike.
† † † |



-- Edited by Calum122 on Thursday 13th of June 2013 09:08:29 AM

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The Leviathan Project



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They also look a 100x better than the original forks

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null_zpsc2aac655.jpgnull_zpsf20a8225.jpgnull_zps2f7502ea.jpg



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Ohh that is interesting.

How much you pay for it? Don't you need the shock as well? And the swingsrm linkage?

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What i don't get though is the dt swing arm is fairly light anyway.

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DT shock should fit, there is one included in the sale that not in the pic..

I paid £150 all in, The fella I brought it off had had it fitted to his 97 DTR so it should be a very straight forward swap. I haven't decided whether or not to try and polish it up to a mirror finish or not yet, I guess I should wait and see what condition it turns up in first! haha

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When you get it. Can you measure the gap between the swing arm. Where the wheel sits and post it up.

Be good to know fof future reference. Is it the same gap between the rear wheel. Or are you going to need new spacers.

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Yeah no probs, shouldn't need spacers or anything though as the 90s YZs use the same hub as the DTR

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Yeah same hubs. But that doesn't mean the front and rear wheels will be inline mate. It may have a smaller gap between the wheel and thus smaller spacers.

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The Leviathan Project



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Will be an interesting project though!

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True. We will find out soon enough..

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Please post your findings under a new thread in the correct section. That way anyome else in the future can easily find it.

I'm excited fo see what you find out dude.

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Yeah will do, this thread has gone a bit off track! haha

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Nah but i hope you got decent information out of it.

Personay i've never taken my bike so far that the usd's have been beneficial.

Like i said. Nothing wrong with the original setup. You can even just put thicker oil and stiffer springs in if its too spongy. For me the USD's were purely aesthetics. .

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Calum122 wrote:

Absolutely wicked bruv. Better rebound. Stiffer suspension and better handling. But to be fair that might also be down to the supermoto wheels.

Ask enny how easy it was.

It does mean a bit of fooking about mate.

My way more than others but thats what its all about. I'd definitely go the bearing cup route again. You raise the height of the handle bars and the overall height. You'll want a jack up kit to go with it. Otherwise your dt will look a bit silly.

It's a nice conversion but not for everyone. For road use you probably won't notice much. For me it was purely an asthetics thing. Theres nothing wrong with the original setup to be fair. I just wanted to supermoto my dt and thougbt i might as well USD it.

Its expensive. Can take time and a bit of trial and error.

Best to get everything off the same bike and year matey.

So if you buy forks from a yz250 2003 make sure you get the spindle and yokes as well.

Then you can either press the stem out of the dt yokes. And the yz yokes. Press the dt stem into the yz using a collar to compensate the diameters and press on new bearings and voila. That should be you done.

Or feck about making bearing cups and use the exisiting yz stem like me. Although my bottom bearing didn't reach the race. So i've had to press that bearing off. Put a 2mm spacer behind it and press a nea bearing on.

Still easy thougb. Just more hassle.

Nice ride height though. Longer yokes.

"Bruv", Oh dear cal, Oh dear. Other than that good bit of info ;)



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DTR Legend

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Fake and gay



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liking the look of that rear end... let me know if you need to borrow a polishing kit bud.

could get it grit blasted and vapour blasted? the finish is similar to a car alloy wheel†biggrin



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Thanks mate I may have to take you up on that, but I will also look into vapour blasting aswell. Think I will need start a project thread..

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