| Author | Message | ||
     Jjcool |
So before changing my front (do not remove) bracket which broke about a week ago, I wanted to get some help in diagnosing its cause. After a little reading, a worn or torn isolator seems to be top on my differential. here are some pics (best i could do) Need changing? What else could cause the bracket to break? http://a6.sphotos.ak.fbcdn.net/hphotos-ak-snc7/403 691_679471867717_194602082_33739277_1466612554_n.j pg http://a5.sphotos.ak.fbcdn.net/hphotos-ak-ash4/407 186_679471897657_194602082_33739278_1691438609_n.j pg http://a3.sphotos.ak.fbcdn.net/hphotos-ak-ash4/408 143_679471912627_194602082_33739279_2025280154_n.j pg http://a2.sphotos.ak.fbcdn.net/hphotos-ak-snc7/409 230_679471932587_194602082_33739280_86106986_n.jpg http://a8.sphotos.ak.fbcdn.net/hphotos-ak-ash4/402 101_679471947557_194602082_33739281_824166643_n.jp g http://a1.sphotos.ak.fbcdn.net/hphotos-ak-snc7/395 600_679472002447_194602082_33739284_1684016095_n.j pg http://a7.sphotos.ak.fbcdn.net/hphotos-ak-snc7/394 488_679472017417_194602082_33739285_2046082606_n.j pg http://a5.sphotos.ak.fbcdn.net/hphotos-ak-snc6/166 988_679472032387_194602082_33739286_1336314331_n.j pg | ||
| Swampy |
Hi Jjcool, The pictures show that you have a bad/broken front isolator. Riding with a broken isolator can cause your "Do Not Remove" bracket to break. Go by the manual when you replace the bracket and isolator. Get new bolts and some Red Hi Temp Locktite for the bolts that screw into the head. Check the head for the threads being too large otherwise you will be chasing broken "Do Not Remove" bracket bolts for ever. If the holes are too wobbled out I have had great luck using helicoils. Good luck. | ||
| Jjcool |
Thanks swampy. Would u say the new bolts are required? Or can I reuse the old bolts? Is there anything else I should change while I'm there? | ||
| Gearheaderiko |
You can reuse the old bolts as long as there isnt anything obviously wrong with them. Just make sure you follow the procedure as outlined in the repair manual (and the red Loctite). | ||
| Jjcool |
Cool. Now is this the isolator I need? i was getting confused with the new PNs and old PNs http://www.ebay.com/itm/V-Factor-Front-Rubber-Engi ne-Mount-Harley-Davidson-FLT-FXR-OEM-16207-79B-/20 0699259931?_trksid=p3284.m263&_trkparms=algo%3DSI% 26its%3DI%26itu%3DUCI%252BUA%252BFICS%26otn%3D21%2 6pmod%3D190326357413%26ps%3D54#ht_1990wt_1114 | ||
| Ezblast |
If you order the Blast specific part you get new stand-offs as well. EZ | ||
| Spade115 |
Well was hoping I just had a flat as I was getting closer to home yesterday when the blast had a bit of the shakes and felt like it was vibrating A LOT!! yesterday...Found this :/ Called local dealers and its going to be 23 dollars "Front Motor mount" for a blast. just wanted to verify if this is correct and/if there is a better motor mount I can run.  | ||
| Gearheaderiko |
They make a billet mount. Don't know if it's stronger, but it's a lot more money. $160. | ||
| Bluv21 |
I wonder what failure mode made that mount fail... Was everything properly aligned and torqued? If things are misaligned, this can lead to a preload on the part in question and subsequently lead to localized strain hardening (like taking a paper clip and bending it back and forth a bunch on times till it breaks, same concept). I can't see the pattern at the failure point but from the geometry of that mount, I would imagine it sheared due to torque. When you replace it, make sure you it is aligned and tighten it equally so as not to preload the mount or else you will have the same problem over time again. | ||
| Gearheaderiko |
Concur. The manual has specific instructions on installation. While there isn't a high failure rate, improper installation will greatly increase failure probability. | ||
| Spade115 |
The bike is basically the same as i received it. The previous owner(s) babied the bike (06 with only 5000) 2 years ago,I put 5000 miles in 6 months and had various problems to find out it was just mostly my air cleaner box gave me most of the problems, rejet the carb, changed the cleaner pipe broke so just removed the original pipe, its a torqy little bike that dosnt see less then 60 mph daily. I do however ride on the sidewalk at work to get to work on some occasions and have had to jump things with it (Sidewalks, old people :0, lol) going today to order the new one at the dealership will post up what the item number is when i get home. | ||
| Bluv21 |
"Jumping things" will do it too. Remember that the Motor hangs off of the frame and although classical stress analysis assumes everything is rigid, this is not the case with anything in the real world. Anytime you "jump" something, the weight of the motor is going to put stress on that bracket. I suggest if you want the motorcycle to last, that you ride it how it was intended to be ridden. If it was designed to go off road or off of sidewalks, it would be marketed as such. Otherwise, structural repairs for this motorcycle will not bode well as a selling point. There are also places in the frame that is it welded together and the disadvantage of welding is that there are inherent localized stresses induced from the welding process (without stress relief annealing the frame). The more external stress you put on these welds, the closer they get to breaking. | ||
| Spade115 |
yup thats why im looking at having a frame built. lol I bought it for the fact it'll do 75 mpg and has out lasted my sportster (I babied that more then I babied this) Question: This bike was intended to be a practice/learning bike so I shouldnt be doing more then 5000 miles in 6 months? | ||
| Gearheaderiko |
They've been way more abused than that! They just arent built for jumping curbs or any other 'air time'! |
