View Full Version : Fitting JHP fork protectors - help!
Twinfan
17-Jan-2006, 21:46
OK, I've got those push-in fork protectors from JHP for my 749S. I've greased them up, hammered them, and they won't go fully home :(
Have I got to undo the pinch bolts holding the front axle? If so, what torque do I re-tighten them too?
Cheers!
Shouldn't need to touch the pinch bolts as it's the axle you are driving them into. Sounds to me like they are to big. I wouldn;t go ramming them home otherwise you will struggle to get em out again. If you can get hold of a vernier and measure the inside diametre of the axle and the outside of the protectors, the latter should be slightly smaller than the former. If not, send them up to me and I'll machine em for you.
Harv748
17-Jan-2006, 21:54
Mine were tight on my 916...they do need wacking home!
butch890
17-Jan-2006, 21:55
I have them on all of my bikes and on the baby r they sit about 3mm proud.
dont forget to drill out the adjustment hole from the bottom of the forks once fitted.
Butch
STOP! you do need to undo the pinch bolts!
Mine were the same mate.
Neither side fitted flush, only a few mm left though, butI was too scared of hammering any harder!
every holes a goal:cool: ram it in.
Twinfan
17-Jan-2006, 22:45
Hmmm. Conflicting advice then! I'll give them another whack tomorrow and see how I get on...
I bought some on Sat at jhp.and He :saint: said undo the pinch bolts!
Harv748
17-Jan-2006, 23:05
I don't see the logic in that though Andy...the pinch bolts do just that, pinch the fork bottom to the spindle...certainly shouldn't be deforming the spindle in any way.
And the protectors should be a tight fit, what use would they be if they were loose and were called into service with the bike sliding down the road/track...?
Im only saying what i was told, I know which way ill be fitting them. :P
Harv748
17-Jan-2006, 23:19
I could tell you weren't paying attention during the presentations...:frog:
Me? With my reputation..........:o:lol:
If you need to undo the pinch bolts, they are too tight and are deforming the axle. I don't care what Johnny Hackett says, there is no way the axle should deform at the torque these bolts are done to.
FWIW on my track bike, I made them a loose fit in the axle and ran a bolt between the two protectors to hold them in place, made the job a lot quicker when swapping from slix to wets.
Without gong all through the previous posts to see if ths has already been mentoned but!!!
Ohlins axle and Showa axle's have different diamaters I believe. When I bought mine Dave asked me what forks are they for. I then bought another set to replace the damaged one and did not menton I had Ohlns forks. The second set are a loose fit, remedied by wrappng P.T.F.E tape around the stem. So if you are fitting bungs that are meant for Ohlns forks, this could be your problem.
Harv748
18-Jan-2006, 00:56
Originally posted by Jon
Ohlins axle and Showa axle's have different diamaters I believe.
Really?
I thought the spindles were the same...I'm 99.9% sure my spindle came from the showas that were originally on my my bike???:puzzled:
Andy B is right guy's .............YOU HAVE TO LOOSEN THE PINCH BOLTS...............
I have ruined a pair already by hammering the little buggers home...... A little turn of the pinch bolt and hey presto.................:D
There is a god.................:saint:
I'd imagine the spindle/axle size would be the same, otherwise your front wheel would need to be different from fork to fork???
Saying that mine went in straight away on the 999, but Bob struggled to get them in, I ended up cutting a cross down the length of the bung which allowed the last few mm's to drift in
Twinfan
18-Jan-2006, 13:08
Cheers - any idea on the torque for the pinch bolts????
Originally posted by chief
Andy B is right guy's .............YOU HAVE TO LOOSEN THE PINCH BOLTS...............
I have ruined a pair already by hammering the little buggers home...... A little turn of the pinch bolt and hey presto.................:D
No way. How on earth can slackening a bolt that grips the outside only of a spindle have an effect on the inside diameter.
I'm not saying the external dia is the same, I was refering to the inside dia.
I think the best way to sort this iut would be to give JHP a ring.
Where do you think I got the advice from in the first place :puzzled:
Rickie at JHP told me to do it........................sometimes Jon you just have to except the things you don't know anything about.........................I did and now my bungs fit a treat....................nuff said
Twinfan
19-Jan-2006, 10:53
Cheers guys - I'll try loosening the pinch bolts...
Twinfan
19-Jan-2006, 20:06
Well I've loosened the pinch bolts and the bugger still sits out by about 6mm :puzzled:
I'll have to get a rubber mallet...
Carbon749
19-Jan-2006, 21:00
Run some emery cloth around the outside of the bung were it slides in to the axle tube. Just a slight bit off will help them slide in .. also add a smear of grease.
Harv748
19-Jan-2006, 21:20
I refer the 'onerable genetleman to the reply I gave some moments ago...
Just hit the bugger home...its only a bit of friggin' plastic!
You need to give them a whack, otherwise over time they'd come out surely, they've got to be tight in there because if you do lob it down the road the last thing you want to see is your plastic bung bouncing down the tarmas
If they are being really difficult, take the axle out. They are designed to stay put so refitting should be OK.
Warm the axle up and chuck the bungs in the freezer. WD40 is your friend and whack em home.
It'll make drilling the adjuster access holes easier to.
Originally posted by chief
Where do you think I got the advice from in the first place :puzzled:
Rickie at JHP told me to do it........................sometimes Jon you just have to except the things you don't know anything about.........................I did and now my bungs fit a treat....................nuff said
You Condescending pratt. I have fitted two sets one tight and 1 loose. I didn't bugger up the first set either practising:P
Originally posted by Jon
Originally posted by chief
Where do you think I got the advice from in the first place :puzzled:
Rickie at JHP told me to do it........................sometimes Jon you just have to except the things you don't know anything about.........................I did and now my bungs fit a treat....................nuff said
You Condescending pratt. I have fitted two sets one tight and 1 loose. I didn't bugger up the first set either practising:P
God your good!
:lol::lol:
On the subject of JHP fork protectors...mine are pretty much in there, but how do I get them out? :o
Harv748
19-Jan-2006, 23:38
Why do you want to get them out?
A socket will fit over the top and the spindle can be removed with them in place.
Originally posted by khu996
On the subject of JHP fork protectors...mine are pretty much in there, but how do I get them out? :o
If you have the misfortune to test them like I did, there is no real alternative but to drill them out.
Originally posted by Jon
Originally posted by khu996
On the subject of JHP fork protectors...mine are pretty much in there, but how do I get them out? :o
If you have the misfortune to test them like I did, there is no real alternative but to drill them out.
I'd agree with that... unfortunately, but I can confirm they do work
Just wanted them out to try another set of different protectors I had off eBay.
Looks pretty difficult though...perhaps they'll stay after all! :D
butch890
20-Jan-2006, 14:50
Originally posted by Harv748
Why do you want to get them out?
A socket will fit over the top and the spindle can be removed with them in place.
harv,getting them out undamaged is a piece of pee.
Remove the axle and slice down the length with a grinder and hey presto you have your bungs out ready for re-use!:lol:
Butch
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