shane661
Needs a life
Posts: 11494
|
posted July 19, 2008 08:25 AM
 Edited By: shane661 on 19 Jul 2008 10:47
Jason Miller Seminar 7/18 Report
Racheal and I attended another Jason Miller seminar at MIR yesterday. I had the 14 with me, freshly prepped, 1100 miles. She had her 2003 GIxxer 1000.
The first thing on the agenda was to change out her clutch. I pretty much roasted it at the last seminar. Her bike is only +2 on the gearing, sitting at 62 inches. Since she is about 65 lbs. lighter than me it works pretty well for her, but I have to slip the hell out of the clutch...with predictable results.
Pulling it apart:
The terrible aftermath of friction material:
I didn't want to ride the bike much after changing the clutch. I knew I would still be slipping it like crazy and I didn't want to hurt it again. A couple of passes confirned that the new clutch worked pretty well:
I sat in the pits greasy, hot, and exhausted...and Racheal made some passes. Her best for the day was a 9.87. Her 60 fts. were very consistent and she felt good about her riding. She seems to ride better without an evil tyrant (me) watching her every move. lol
I made three passes on my bike, each of them botched. All three passes gave me a clanging sound at the top of 1st gear. Initially I thought that I may have jumped a tooth on the sprocket. One of Rick's (aka Crotchrocket) friends had a 14 there and suggested that I tighten the chain pretty taut as this was a common problem on the 14 at the track.
My third pass netted my best 60 ft. ever, a 1.58:
As you can see, that was a very mild launch and still netted under a 1.6...
Gratuitous burnout shot:
14 belonging to Rick's buddy (nice guy, and sweet bike):
In the pits checking the chain:
Sadly, that was the end of the day for the 14. I took it back to the pits and adjusted the chain again only to find the right wheel spacer pressed into the wheel. The axle was seized in the wheel and I could not remove it. I also felt some crunchiness when I rotated the axle. Not good. I have not had it apart, but I suspect that the collar between the wheel and the sprocket carrier may have been left out during a wheel swap, leading to carnage. If so, I have learned a valuable lesson about working too many hours in a 100 degree garage. At any rate, the bike was still making that clanging sound even with a very taut chain...so I will have to figure that out once I fix the other damage.
Tomorrow I will dig into the problem on the 14, and hopefully get that axle out. The next seminar is in two weeks, and I need to get parts on the way.
Shane
  
|
entropy
Moderator
Posts: 8671
|
posted July 19, 2008 11:54 AM
Shane,
seems like you are making good progress!
Too bad about the real wheel, but no problemo, its only money!
You going to Maxton in Sept?
____________
This moderator uses moderation in moderation
|
shane661
Needs a life
Posts: 11494
|
posted July 19, 2008 11:59 AM
Yes, we'll be there. We should be bringing Racheal's turbo bike and the 14...how about you?
|
entropy
Moderator
Posts: 8671
|
posted July 19, 2008 12:05 PM
yep,
Gary and I will be coming back.
This time i oughta have some hp; we'll see in the next few weeks.
____________
This moderator uses moderation in moderation
|
shane661
Needs a life
Posts: 11494
|
posted July 19, 2008 12:13 PM
Edited By: shane661 on 19 Jul 2008 13:15
quote:
yep,
Gary and I will be coming back.
This time i oughta have some hp; we'll see in the next few weeks.
Cool! I take it you are chasing that "stumble" in top gear?
We might have some more hp too. We might give the boost controller something to do this time. 
Shane
|
shane661
Needs a life
Posts: 11494
|
posted July 19, 2008 06:06 PM
Edited By: shane661 on 19 Jul 2008 19:28
Well, I haven't had the bike apart yet. But I can say with relative certainty that the chain was slapping...even when guitar-string-tight! Look at the launch sequence below...and the chain deflection, and snap back:
You can hear it hit in the video. Even super-tight it still was slapping!
So, I'm thinking that firming up the rear suspension will slow the reaction down and keep the slap from occuring. That will hopefully allow me to set the chain a little looser than I had it.
Even though the chain was very taut under test conditions (bike strapped down in the rear), I couldn't approximate the lash created by the engine power and speed of the suspension action.
Now if I can get the axle out of the wheel and assess that damage, I will be on the right track (I think).
Shane
|
entropy
Moderator
Posts: 8671
|
posted July 20, 2008 08:20 AM
quote:
quote:
yep,
Gary and I will be coming back.
This time i oughta have some hp; we'll see in the next few weeks.
Cool! I take it you are chasing that "stumble" in top gear?
We might have some more hp too. We might give the boost controller something to do this time.
Shane
i am chasing my hi rpm hp; it went missing after some tweaks. both the shape of the curve and the peak numbers went S.
Maxton was a gas for TFA, we want MORE!!
It'll be a warm up for the Texas Mile in Oct.
____________
This moderator uses moderation in moderation
|
shane661
Needs a life
Posts: 11494
|
posted July 24, 2008 06:39 AM
Edited By: shane661 on 24 Jul 2008 07:55
EPILOGUE:
Well, I found the problem with the rear wheel. Just as I had thought, this spacer was left out:
By leaving it out, it created extreme pressure on the right side outer wheel bearing (it wasn't good for either bearing). This caused some damage to the axle which made it hard to remove:
The above photo is after some cleanup. If you have ever wondered what could happen if you left that little spacer out, I've got just the photo for you. Look closely for any minute signs of accelerated bearing wear:
Ouch! Well, I'm glad I was able to get everything apart and there is a clear cause/effect. I already have a spare wheel sitting here and I ordered parts for a complete set of spares. Now I will be able to have a rear wheel/sprocket setup for drag racing and one for LSR. How's that for a positive spin on things?
Shane
|
VincentHill
Needs a life
Posts: 6520
|
posted July 24, 2008 07:11 AM
"IT" Happens! That is why I post my Stupidity so others will learn! Good Post Shane!
____________
Made History @ Daytona and still one fast old man!!
|
shane661
Needs a life
Posts: 11494
|
posted July 24, 2008 07:14 AM
quote:
"IT" Happens! That is why I post my Stupidity so others will learn! Good Post Shane!
Yep, absolutely 100% my fault....I knew I was in trouble this morning when I located the spacer in question....before removing the wheel!
Shane
|
CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
|
posted July 24, 2008 07:20 AM
Shane, at least you know why it happend...
Did you order new bearings and are you going to The July 31 thursday seminar???
____________
Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
|
shane661
Needs a life
Posts: 11494
|
posted July 24, 2008 07:22 AM
I have a replacement wheel here with bearings installed (ordered it off of ebay Sunday night, it arrived yesterday). I should be able to make the 7/31 event. 
Shane
|
shane661
Needs a life
Posts: 11494
|
posted July 24, 2008 12:40 PM
quote:
Shane, at least you know why it happend...
Did you order new bearings and are you going to The July 31 thursday seminar???
Are you coming down on the 31st?
|
CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
|
posted July 24, 2008 01:35 PM
yep, just me!!!
____________
Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
|
shane661
Needs a life
Posts: 11494
|
posted July 24, 2008 01:44 PM
Cool. I'm hoping to get some good passes in this time. I plan to make a slight gearing change to Racheal's bike, but I'm just going to work on the suspension and chain slap issues with mine.
I also need to log some data and see what the a/f ratio is like. I am using a homemade map from another member here. I never got a clean pass to even see if the mph was good.
Shane
|
|
|
HOME
NEW TOPIC