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Jack up kits. Pros and cons ???

Posted: Tue Mar 27, 2012 11:49 am
by Ritchiritch
I've been thinking of lifting the back end a little but by how much I don't really know. Would doing this sacrifice the handling or make it better. Do you then need to lift the front or lower it? Could someone enlighten me on the best way to go

Cheers guys

Re: Jack up kits. Pros and cons ???

Posted: Tue Mar 27, 2012 1:08 pm
by trixynut
Mate,
I have just fitted YZF dogbones (shorter than trx ones) which lift the back end, and then put the forks back to standard drop-through on the yokes. The handling is now spot on for me. Slightly sharper turn-in, extra ground clearance but still stable up to 130mph.
No real disadvantages. Leans over a bit more on the stand but not unsafe. Seat heaight a bit higher, but i have long legs. Slightly more forward riding position so bit more weight on wrists but again not really noticeable.
I've done this mod to all my 4 TRXs.
The yzf dogbones give just the right lift for me and are freely available. Think you can still get them new from Yamaha for not a lot.
Dave.

Re: Jack up kits. Pros and cons ???

Posted: Tue Mar 27, 2012 7:50 pm
by scotsy
Can someone confirm the hole centre measurement that is required to lift the rear about an inch?

what is the trx STD measurement?

what is the YZF's replacements measurement?

is this the YZF item http://www.ebay.co.uk/itm/YAMAHA-Thunde ... 231a87a15c

or is that to raise up the YZF as it appears from the ad so therefore not what the TRX needs

I'm sure others are wondering too :oops:

Re: Jack up kits. Pros and cons ???

Posted: Tue Mar 27, 2012 8:19 pm
by Ritchiritch
trixynut wrote:Mate,
I have just fitted YZF dogbones (shorter than trx ones) which lift the back end, and then put the forks back to standard drop-through on the yokes. The handling is now spot on for me. Slightly sharper turn-in, extra ground clearance but still stable up to 130mph.
No real disadvantages. Leans over a bit more on the stand but not unsafe. Seat heaight a bit higher, but i have long legs. Slightly more forward riding position so bit more weight on wrists but again not really noticeable.
I've done this mod to all my 4 TRXs.
The yzf dogbones give just the right lift for me and are freely available. Think you can still get them new from Yamaha for not a lot.
Dave.
Cheers mate. When you say drop the forks back to standard....what do you mean by this as my trx is standard setup anyway?

Re: Jack up kits. Pros and cons ???

Posted: Tue Mar 27, 2012 8:45 pm
by trixynut
The standard amount of fork tube showing above the clip-ons is 18mm. But dropping the forks through more, so maybe up to 30mm shows, will quicken the steering as it increases the angle of the forks.

Raising the rear does the same thing as dropping the forks.

So, I raised the rear with yzf dogbones and put the forks back to about 18mm showing.

Does this make sense....??

Dogbone lengths have been discussed much in the past on here: check out the thread below for some basic info on lengths/height raise:

viewtopic.php?f=5&t=7637&p=78379&hilit= ... +mm#p78379

Dave

Re: Jack up kits. Pros and cons ???

Posted: Tue Mar 27, 2012 11:55 pm
by cal
Kayla who posts here makes a dogbone now with 4 holes in it, giving a few choices in ride height, 8)

Re: Jack up kits. Pros and cons ???

Posted: Wed Mar 28, 2012 7:25 am
by scotsy
I've sent her a message via the projection components website, awaiting a reply later today hopefully =D>

Re: Jack up kits. Pros and cons ???

Posted: Wed Mar 28, 2012 7:47 am
by Mincehead
These are what Cal was referring to Scotsy:

http://www.ebay.co.uk/itm/Yamaha-TRX850 ... 3a72707d7b

I happen to know Kayla is VERY busy just now so be patient. :wink:

Re: Jack up kits. Pros and cons ???

Posted: Fri Mar 30, 2012 9:10 pm
by scotsy
Thats exactly what the postman delivered this morning :D , now thats what you call service =D>

Good communication by email with my options, ordered/paid Kayla thursday and received on Friday and at a forum special discounted price

Thanks Kayla :lol: :)