Will a profile hop up kit fit a floating 401 Redline spindle? I think it will but I'm not 100% sure and don't want to cough up £35 for something that won't fit.

Cheers,
Bren.

both are 19mm spindles so i cant imagine any problems
graeme

Cool, Thanks G.

It will all fit _but_ if you want to use the nicely curved Profile Hop up flanges , they will make your Redline spindle even shorter than it already is , leaving even less room on the splines for the cranks to hold onto.

Profile spindles in general are noticeably longer than (almost) any old school Redline spindle you could buy.

Speaking from experience.

JB

Mr CB where are you??

some RL fully splined spindles measure up at around 0.3mm smaller in diameter than standard 3/4" and use an aluminium bush in conjunction with Ø20 bore bearings. If thats the spindle you have they'll be annoyingly sloppy in your 3/4" bore profile bearings. To be sure you really need to measure up the Ø of your spindle exactly to know what bearings you can use.
Been plenty of tech threads on this, I wish someone would right up the definitive redline flight crank "fitup bible" haha!

the current taiwanese .750" (19mm) redline spindles should work, bearing-wise. but, as jet black said, may come up a bit short with the cone spacers in place.

the older USA spindles are .745" and won't work with the hop-up kit. they are close enough to use in a .75" / 19mm bearing, but there is enough play that the hop-up cone spacers will rub the cups . (yes, i have tried it.) same goes for the USA spindle with a profile euro BB.

the taiwan spindle uses metric bolts, the USA uses SAE (american) bolts.

[ July 24, 2006, 09:24 PM: Message edited by: mr coasterbrake ]

FWIW I paid $30US for my silver profile Hop Up kit NOS still in the bag , so 35 quid is a lotta money to be paying unles s it is annodised in a certain colour that you really want.

I just tried my (ultra soft aluminium) profile Hop Up bearings on a fully splined Redline axle & Mr CB is right there is some sloppy bearing play , brand new bearings with a 15+ year old Redline spindle = more play than I want or need in a redline/profile combo sealed bearing BB that I want to use as a reliable ride jump bike/rider .....
The cone spacers for the Profile kit are made out of a really soft aluminium too , all you have to do is look hard at them & they get damaged. I doubt there was any heat treatment done on these parts they were turned up out of raw Al stock & bagged. Maybe the annodised ones are harder , not that it will do me much good now.

Damm that throws a few of the plans I had to make sealed bearing BB's using the 2 unthreaded full spline Redline spindles I have right out the window by using Profile sealed bearing BB's. Damm Damm bother etc.
The extra ~4mm length on the fully splined RL spindles vs the threaded RL ones comes in real handy for fitting them onto certain early 1980's frames.

I may have an assortment of profile & Redline spare parts for sale when I sort out this mess , but not at the moment.
I need to talk to the Mechanic , he has a bearing cattldog stored in his head & should be able to sort out these newfound "issues"

Triple Funk.

JB

if you have acces or know someone with acces to a lathe you could possibly machine a set up your self, i've noticed a couple custom ones at the track on bikes.
Just dont forget the stepdown to make sure bearings don't rub.
just an
Also aslong as the bearing are steady on the spindle the flushmount washer doesn't need to be right against it, it should just have force between the arms and bearings, no need for it to be tight against the splines, I ran a 22m flushmount washer with a 19mm spindle a while ago before I bent the crank arm on that set, unrelated issue though haha. If you feel the need, you can make a shim out of an old soda can or some spare sheet steel. Also has anyone made cups that sit into the frame deeper than normal?, so this could be done relatively easily,, by using the ld spindle, I just wonder if any one here has done it, and if it'd work.

[ July 25, 2006, 08:06 AM: Message edited by: bullyhotrod86jh ]

I've got a set of 2006 Redline Flight II cranks and a set of 1996 Redline Flight cranks. The 1996 cranks have a fully splined spindle with a diameter of .738 US or 18.75 MM. They use these little black plastic insert pieces that go into the bearings and the spindle slides thru. These black plastic pieces have the spline shape molded into them and take up the .012 US or .30 MM in slop form the spindle not being a standard 3/4" or .750 US or 19.05 MM . The crappy thing about this spindle is unless you have those black plastic insert pieces, the spindle is too sloppy and can't be used with a normal 3/4" I.D bearing. I'll post pics of them later. My 2006 Redline cranks I plan on using with a Profile Hop-up kit w/cone spacers but there's a couple things. The Profile cone spacers are thicker than the Redline cone spacers. I think 2006 is the first year Redline started using cone spacers instead of a bunch of plain washers. They give you both in the box(washers and cone spacers). The Redline cone spacers are .158 US or 4.01 MM and .315 US or 8.0 MM. The Profile cone spacers are .200 US or 5.08 MM and .400 US or 10.16 MM. This means you have to mill off .042 US or 1.07 MM and .085 US or 2.16 MM from the Profile spacers to make them the same size as the Redline cone spacers. I did this at work, (I'm a machinist) and they came out pretty good. I'll post pics later when my camera is charged up. Now you can use the Profile cone spacers the way they are BUT:your gonna have less of the crank arms clamping to the spindle. The arms will still tighten up but there will be a little more of your crank arm off the spindle and floating in space. Now as far as the bearing and cup. I took the 2006 Profile cup and bearing and the 2006 Redline cup and bearing and they were the exact same size and depth. I can't speak for other years but I measured the 2006's with my micrometers and depth mics and they were the same size in all aspects. As far as the 2006 Redline spindle, it measured at .747 US or 18.97 MM. My old Profile spindle measured at .749 US or 19.02 MM. So the Redline spindle is about .002 US or .05 MM smaller than the Profile spindle but should still work. I mocked everything up after I machined the cone spacers and it all looked and spun good. Now like someone above mentioned, on the back of the Redline and Profile cone spacers is a machined relief on the outside edge of the spacer. This is clearance for the bearing. You have to make sure this clears and doesn't rub, especially if you have older, used bearings and they have a little slop. I'm going to machine the relief a little more just to be safe but I need to get a special holder for the cones since their so thin. I'll post some pics later of what I'm talking about. So if you have a Redline spindle with a diameter of at least .747 you can use a Profile BB. Any spindle smaller than that and your gonna have a lot of slop and the cone spacers will probably rub on the bearings and it won't spin too smooth. I'll try to post some pics tonight to show what I'm talking about.

P.S. The 2006 Redline cranks use metric screws which is no big deal except that the spindle bolt is a bastard size 8MM x 1.0 thread. I went to get all new stainless steel screws for the cranks instead of the black oxide ones they give you and found this out. I could get the screws for the sprocket and pinch area but not the spindle bolt. I wanted a button head screw like the old school flights had and for whatever reason Redline uses this oddball 8MM x 1.0 thread on the spindle that no one can get a bolt for. The screw that came with the cranks is a one piece screw/washer that to me just doesn't look good. Just my opinion. Even if I did like it, if I lost that screw I couldn't buy another one. I'd be sol. Maybe the guys in the all metric countries could get one but I can't seem to find them. I even went online to try and find some.

Brian

[ August 17, 2006, 09:58 AM: Message edited by: RACEINC43 ]

Here's some pics from/for my above post.

Some more pics for above.